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RULESFOR THE CLASSIFICATION OF
SHIPS
Part 27 - CHEMICAL TANKERS
2009
CROATIAN REGISTER OF SHIPPING
Hrvatska (Croatia) • 21000 Split • Marasovićeva 67 • P.O.B. 187Tel.: (...) 385 (0)21 40 81 11Fax.: (...) 385 (0)21 35 81 59
E-mail: [email protected] site: www.crs.hr
By decision of the General Committee of Croatian Register of Shipping,
RULES FOR THE CLASSIFICATION OF SHIPSPART 27 – CHEMICAL TANKERS
has been adopted on 8th May 2009 and shall enter into force on 1st July 2009
RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
REVIEW OF AMENDMENTS IN RELATION TO PREVIOUSEDITION OF THE RULES
RULES FOR THE CLASSIFICATION OF SHIPSPart 27 – Chemical tankers
Due to significant changes in respect to the Rules for technical supervision of sea-going ships, Part 27 –Chemical tankers, 2002 edition, deriving from IBC Code 2004 and subsequent amendments, changes and correctionshave not been indicated throughout the text.
NOTE: Due to change of the structure of the Technical Rules (separation of statutory from classificationrules), previously issued Rules for technical supervision of sea-going ships, Part 27 – Chemical tankers, are now re-categorized as a part of the classification rules.
By such change, Part 27 – Chemical tankers, will no longer be issued as a part of the Rules for technicalsupervision of sea-going ships.
RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
This Part of the Rules includes the requirements of the following international Organisations:
International Maritime Organization (IMO)
Conventions: International Convention for the Safety of Life at Sea, 1974 (SOLAS 74) and all subsequent amen-dments up to and including the 2006 amendments (MSC.216(82)).
Protocol of 1988 relating to the International Convention for the Safety of Life at Sea,1974, as amended (SOLAS PROT 1988).
Codes: International Code for the Construction and Equipment of Ship's Carrying Dangerous Chemicals inBulk resolution MSC.4(48)/MEPC.19(22) and all subsequent amendments up to and including theamendments 2006/2007 (MSC.219(82)/MEPC.166(56))
Resolutions: A.567(14) and A.673(16);MSC.31(63), MSC.35(63), MSC.57(67), MSC.62(67), MSC.99(73), MSC.235(82) andMSC.236(82);MEPC.148(54).
Circulars: MSC/Circ.314, MSC/Circ.394, MSC/Circ.406/Rev.1, MSC/Circ.553, MSC/Circ.585,MSC/Circ.668, MSC/Circ.670, MSC/Circ.677, MSC/Circ.728, MSC/Circ.731, MSC/Circ.799,MSC/Circ.848, MSC/Circ.879, MSC/Circ.879/Rev.1, MSC/Circ.929, MSC/Circ.1009,MSC/Circ.1037, MSC/Circ.1095, MSC/Circ.1165, MSC.1/Circ.1220, MSC.1/Circ.1237,MSC.1/Circ.1241, MSC.1/Circ.1267, MSC.1/Circ.1269, MSC.1/Circ.1270 and MSC.1/Circ.1271.MSC-MEPC.2/Circ.7.MEPC.1/Circ.512 and MEPC.2/Circular.BCH/Circ.38 and BLG.1/Circ.25.
International Association of Classification Societies (IACS)
Unified Requirements:
F20(2001)
Unified Interpretations:
CC1 (2007, rev. 2), CC2 (2007, rev. 1) and CC3 (2007, rev. 1);SC 71 (2007, rev. 1) and SC 201 (2006).
RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
Contents:Page
FOREWORD....................................................................................................................................................................... 1
1 GENERAL ............................................................................................................................................................... 21.1 GENERAL REQUIREMENTS .....................................................................................................................................................21.2 APPLICATION .............................................................................................................................................................................21.3 HAZARDS AND CRITERIA FOR ASSIGNING CARRIAGE REQUIREMENTS FOR PRODUCTS SUBJECT TO
THIS PART OF THE RULES.......................................................................................................................................................21.4 DEFINITIONS ..............................................................................................................................................................................31.5 EQUIVALENTS............................................................................................................................................................................41.6 TECHNICAL DOCUMENTATION.............................................................................................................................................4
2 SHIP SURVIVAL CAPABILITY AND LOCATION OF CARGO TANKS ..................................................... 62.1 GENERAL.....................................................................................................................................................................................62.2 FREEBOARD AND INTACT STABILITY .................................................................................................................................62.3 SHIPSIDE DISCHARGES BELOW THE FREEBOARD DECK................................................................................................62.4 CONDITIONS OF LOADING......................................................................................................................................................72.5 DAMAGE ASSUMPTIONS .........................................................................................................................................................72.6 LOCATION OF CARGO TANKS................................................................................................................................................82.7 FLOODING ASSUMPTIONS ......................................................................................................................................................82.8 STANDARD OF DAMAGE .........................................................................................................................................................92.9 SURVIVAL REQUIREMENTS..................................................................................................................................................10
3 SHIP ARRANGEMENTS..................................................................................................................................... 113.1 CARGO SEGREGATION...........................................................................................................................................................113.2 ACCOMMODATION, SERVICE AND MACHINERY SPACES AND CONTROL STATIONS ...........................................113.3 CARGO PUMP-ROOMS ............................................................................................................................................................123.4 ACCESS TO SPACES IN THE CARGO AREA........................................................................................................................133.5 BILGE AND BALLAST ARRANGEMENTS............................................................................................................................143.6 PUMP AND PIPELINE IDENTIFICATION ..............................................................................................................................153.7 BOW OR STERN LOADING AND UNLOADING ARRANGEMENTS .................................................................................15
4 CARGO CONTAINMENT................................................................................................................................... 164.1 DEFINITIONS ............................................................................................................................................................................164.2 TANK TYPE REQUIREMENTS FOR INDIVIDUAL PRODUCTS.........................................................................................164.3 GENERAL...................................................................................................................................................................................164.4 SCANTLING AND TESTING....................................................................................................................................................16
5 CARGO TRANSFER............................................................................................................................................ 175.1 PIPING SCANTLINGS...............................................................................................................................................................175.2 PIPING FABRICATION AND JOINING DETAILS .................................................................................................................185.3 FLANGE CONNECTIONS.........................................................................................................................................................185.4 TEST REQUIREMENTS FOR PIPING......................................................................................................................................185.5 PIPING ARRANGEMENTS.......................................................................................................................................................195.6 CARGO-TRANSFER CONTROL SYSTEMS ...........................................................................................................................195.7 SHIP’S CARGO HOSES.............................................................................................................................................................205.8 PROTECTION AGAINST AN INCENTIVE DISCHARGE OF STATIC ELECTRICITY.......................................................205.9 CERTIFICATION, INSPECTION AND TESTING ...................................................................................................................20
6 MATERIALS OF CONSTRUCTION, PROTECTIVE LININGS AND COATINGS ................................... 226.1 GENERAL...................................................................................................................................................................................22
7 CARGO TEMPERATURE CONTROL ............................................................................................................. 237.1 GENERAL...................................................................................................................................................................................237.2 ADDITIONAL REQUIREMENTS.............................................................................................................................................24
8 CARGO TANK VENTING AND GAS-FREEING ARRANGEMENTS ......................................................... 258.1 APPLICATION ...........................................................................................................................................................................258.2 CARGO TANK VENTING.........................................................................................................................................................258.3 TYPES OF TANK VENTING SYSTEM....................................................................................................................................25
RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
8.4 VENTING REQUIREMENTS FOR INDIVIDUAL PRODUCTS............................................................................................. 278.5 CARGO TANK GAS-FREEING................................................................................................................................................ 27
9 ENVIRONMENTAL CONTROL ........................................................................................................................289.1 GENERAL.................................................................................................................................................................................. 289.2 ENVIRONMENTAL CONTROL REQUIREMENTS FOR INDIVIDUAL PRODUCTS ........................................................ 289.3 APPLICATION........................................................................................................................................................................... 289.4 ARRANGEMENT AND DESIGN OF INERT GAS SYSTEMS............................................................................................... 289.5 NITROGEN GENERATOR SYSTEM....................................................................................................................................... 299.6 NITROGEN/INERT GAS SYSTEM FITTED FOR PURPOSES OTHER THAN INERTING REQUIRED
IN 9.3.1 AND 9.3.2..................................................................................................................................................................... 309.7 INERT GAS STORAGE SYSTEM ............................................................................................................................................ 30
10 ELECTRICAL INSTALLATIONS .....................................................................................................................3110.1 GENERAL.................................................................................................................................................................................. 3110.2 BONDING .................................................................................................................................................................................. 3110.3 ELECTRICAL REQUIREMENTS FOR INDIVIDUAL PRODUCTS ...................................................................................... 3110.4 HAZARDOUS LOCATIONS AND TYPE OF ELECTRICAL EQUIPMENT AND WIRING ................................................ 31
11 FIRE PROTECTION AND FIRE EXTINCTION..............................................................................................3411.1 APPLICATION........................................................................................................................................................................... 3411.2 CARGO PUMP-ROOMS............................................................................................................................................................ 3411.3 CARGO AREA........................................................................................................................................................................... 3411.4 ADDITIONAL REQUIREMENTS ............................................................................................................................................ 36
12 MECHANICAL VENTILATION IN THE CARGO AREA .............................................................................3712.1 SPACES NORMALLY ENTERED DURING CARGO-HANDLING OPERATIONS............................................................. 3712.2 PUMP-ROOMS AND OTHER ENCLOSED SPACES NORMALLY ENTERED ................................................................... 3812.3 SPACES NOT NORMALLY ENTERED .................................................................................................................................. 38
13 INSTRUMENTATION .........................................................................................................................................3913.1 GAUGING.................................................................................................................................................................................. 3913.2 VAPOUR DETECTION ............................................................................................................................................................. 39
14 PERSONNEL PROTECTION .............................................................................................................................4014.1 PROTECTIVE EQUIPMENT .................................................................................................................................................... 4014.2 SAFETY EQUIPMENT.............................................................................................................................................................. 4014.3 EMERGENCY EQUIPMENT .................................................................................................................................................... 40
15 SPECIAL REQUIREMENTS...............................................................................................................................4215.1 GENERAL.................................................................................................................................................................................. 4215.2 AMMONIUM NITRATE SOLUTION (93%or less).................................................................................................................. 4215.3 CARBON DISULPHIDE............................................................................................................................................................ 4215.4 DIETHYL ETHER...................................................................................................................................................................... 4315.5 HYDROGEN PEROXIDE SOLUTIONS................................................................................................................................... 4415.6 MOTOR FUEL ANTI-KNOCK COMPOUNDS (CONTAINING LEAD ALKYLS) ............................................................... 4715.7 PHOSPHORUS, YELLOW OR WHITE.................................................................................................................................... 4715.8 PROPYLENE OXIDE OR ETHYLENE OXIDE/PROPYLENE MIXTURES WITH AN ETHYLENE OXIDE CONTENT
OF MORE THAN 30% BY MASS............................................................................................................................................. 4815.9 SODIUM CHLORATE SOLUTION (50% OR LESS BY MASS) ............................................................................................ 5015.10 SULPHUR (MOLTEN) .............................................................................................................................................................. 5015.11 ACIDS......................................................................................................................................................................................... 5015.12 TOXIC PRODUCTS................................................................................................................................................................... 5015.13 CARGOES PROTECTED BY ADDITIVES.............................................................................................................................. 5115.14 CARGOES WITH A VAPOUR PRESSURE GREATER THAN 0.1013 MPa ABSOLUTE AT 37.8oC .................................. 5115.15 CARGOES WITH LOW IGNITION TEMPERATURE AND WIDE FLAMMABILITY RANGE.......................................... 5215.16 CARGO CONTAMINATION .................................................................................................................................................... 5215.17 INCREASED VENTILATION REQUIREMENTS ................................................................................................................... 5215.18 SPECIAL CARGO PUMP-ROOM REQUIREMENTS ............................................................................................................. 5215.19 OVERFLOW CONTROL........................................................................................................................................................... 5215.20 ALKYL (C7-C9) NITRATES, ALL ISOMERS ......................................................................................................................... 5315.21 TEMPERATURE SENSORS ..................................................................................................................................................... 53
RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
16 OPERATIONAL REQUIREMENTS.................................................................................................................. 5516.1 MAXIMUM ALLOWABLE QUANTITY OF CARGO PER TANK.........................................................................................5516.2 CARGO INFORMATION...........................................................................................................................................................5516.3 PERSONNEL TRAINING ..........................................................................................................................................................5516.4 OPENING OF AND ENTRY INTO CARGO TANKS...............................................................................................................5516.5 STOWAGE OF CARGO SAMPLES ..........................................................................................................................................5616.6 CARGOES NOT TO BE EXPOSED TO EXCESSIVE HEAT ..................................................................................................56
17 SUMMARY OF MINIMUM REQUIREMENTS............................................................................................... 5717.1 GENERAL...................................................................................................................................................................................5717.2 EXPLANATORY NOTES TO THE TABLE 17.1.1-1 ...............................................................................................................5717.3 NOTES TO THE TABLE 17.1.1-1 .............................................................................................................................................85
18 LIST OF PRODUCTS TO WHICH THIS PART OF THE RULES DOES NOT APPLY ............................ 8618.1 GENERAL...................................................................................................................................................................................8618.2 EXPLANATORY NOTES TO THE TABLE 18.1.1-1 ...............................................................................................................86
19 TRANSPORT OF LIQUID CHEMICAL WASTES.......................................................................................... 8819.1 PREAMBLE................................................................................................................................................................................8819.2 DEFINITIONS ............................................................................................................................................................................8819.3 APPLICABILITY........................................................................................................................................................................8819.4 PERMITTED SHIPMENTS........................................................................................................................................................8819.5 DOCUMENTATION ..................................................................................................................................................................8819.6 CLASSIFICATION OF LIQUID CHEMICAL WASTES..........................................................................................................8819.7 CARRIAGE AND HANDLING OF LIQUID CHEMICAL WASTES ......................................................................................88
RULES FOR THE CLASSIFICATION OF SHIPS 1PART 27
2009
FOREWORD
1. The lay out of the Rules for the classification ofships, Part 27. – Chemical Tankers (hereinafter referred to as:the Rules) is based on the:
(a) International Code for the Constructionand Equipment of Ships Carrying Danger-ous Chemicals in Bulk (IBC Code)adopted by the IMO Maritime SafetyCommittee by resolution MSC.4(48) andby the Marine Environment ProtectionCommittee by the resolutionMEPC.19(22); and
(b) subsequent amendments thereto adoptedby the following resolutions:
Resolution Entry into force
1 MSC.10(54) 30 October 1988
2 MSC.14(57)MEPC.32(27)
13 October 199013 October 1990
3 MSC.28(61)MEPC.55(33)
1 July 19941 July 1994
4 MSC.50(66)MEPC.69(38)
1 July 19981 July 1998
5 MSC.58(67)MEPC.73(39)
1 July 199810 July 1998
6 MSC.102(73) 1 July 2002
7 MSC.176(79)MEPC.119(52)
1 January 20071 January 2007
8 MSC.219(82)MEPC.166(56)
1 January 20091 January 2009
2. Under the provisions of regulation 9 and 10 ofChapter VII of the International Convention for the Safety ofLife at Sea, 1974 (SOLAS 74), as amended and the provisionsof regulation 11 of Annex II of the International Conventionfor the Prevention of Pollution from Ships, 1973, as modifiedby the Protocol of 1978 relating thereto (MARPOL 73/78),chemical tankers constructed on or after 1 July 1986 and shipsconverted to chemical tankers on or after 1 July 1986 mustcomply with the requirements of the IBC Code.
3. For the purpose of the 1974 SOLAS Convention,the IBC Code applies to ships which are engaged in the car-riage of products included in Chapter 17 of the IBC Code onthe basis of their safety characteristics and identified as suchby an entry of S or S/P in column d in the table of Chapter 17.
4. For the purposes of MARPOL 73/78, the IBCCode applies only to NLS tankers as defined in regulation1.16.2 of Annex II thereof, which are engaged in the carriageof Noxious Liquid Substances and identified as such by anentry of “X”, “Y” or “Z” in column c in the table of Chapter17.
5. This Part of the Rules contains guidelines in-cluding interpretation and application criteria of the IBC Codeprovisions set forth by the Register and unified interpretationsof the provisions of the IBC Code which have been agreedupon by IMO (see MSC/Circ. 406/Rev.1).
6. For guidelines for the transport and handling oflimited amounts of hazardous and noxious liquid substances inbulk in offshore support vessels see resolution A.673(16), asamended (resolutions MSC.236(82) and MSC.235(82)).
7. For guidelines for the transport of vegetable oilsin deeptanks or in indepedent tanks specially designed for thecarriage of such vegetable oils in existing general dry cargoships see resolution MEPC.148(54).
2 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
1 GENERAL
1.1 GENERAL REQUIREMENTS
1.1.1 In general, the requirements in this Part of theRules applies to cargo containment and cargo handling sys-tems and to the interfaces between these systems and otherparts of the ship.
1.1.2 Unless expressly provided otherwise in this Partof the Rules, the ship’s hull and equipment, machinery andelectrical equipment, trim and stability, safety, radio and navi-gational equipment, etc. shall generally comply with the re-quirements in the other relevant Parts of the Rules.
1.1.3 Emergency towing arrangements shall be fittedon chemical tankers of 20,000 tdw and above in accordancewith the requirements specified in Rules, Part 3 – HullEquipment, 5.4 (see resolution MSC.35(63)).
1.1.4 Means shall be provided to enable the crew togain safe access to the bow even in severe weather conditionswhich shall be to the satisfaction of the Register (see resolu-tion MSC.62(67)).
1.1.5 Steering gear on chemical tankers of 10,000 tdwand above shall comply with the additional requirements asspecified in Rules, Part 9 – Machines, 6.2.
1.2 APPLICATION
1.2.1 This Part of the Rules applies to ships regardlessof size, including those of less than 500 gross tonnage, en-gaged in the carriage of bulk cargoes of dangerous chemicalsor noxious liquid substances (NLS), other than petroleum orsimilar flammable products, as follows:
.1 products having significant fire hazards inexcess of those of petroleum products andsimilar flammable products;
.2 products having significant fire hazards inexcess of those of petroleum products andsimilar flammable products;
1.2.2 Application of the requirements in this Part ofthe Rules is at present limited to the products listed in the Ta-ble 17.1.1-1 of Chapter 17. Products that have been reviewedand determined not to present safety and pollution hazards tosuch an extent as to warrant the application of this Part of theRules are found in Chapter 18.
1.2.3 Liquids covered by this Part of the Rules arethose having a vapour pressure not exceeding 0.28 MPa ab-solute at a temperature of 37.8°C.
1.2.4 For the purpose of the safety of life at sea, thisPart of the Rules applies to ships which are engaged in the car-riage of products included in Chapter 17 on the basis of theirsafety characteristics and identified as such by an entry of S orS/P in column d.
1.2.5 For the purposes of the marine environmentpollution prevention, this Part of the Rules applies only toNLS tankers, as defined in 1.16.2 of Annex II of MARPOL73/78, which are engaged in the carriage of Noxious Liquid
Substances identified as such by an entry of X, Y or Z in col-umn c of Chapter 17.
1.2.6 For a product proposed for carriage in bulk, butnot listed in Chapters 17 or 18, the Administration and portAdministrations involved in such carriage shall prescribe thepreliminary suitable conditions for the carriage, having regardto the criteria for hazard evaluation of bulk chemicals. For theevaluation of the pollution hazard of such a product and as-signment of its pollution category, the procedure specified in6.3 of Annex II of MARPOL 73/78 must be followed.
1.2.7 Unless expressly provided otherwise, this Part ofthe Rules applies to ships, the keels of which are laid or whichare at the stage where:
.1 construction identifiable with the ship be-gins; and
.2 assembly has commenced comprising atleast 50 tonnes or 1% of the estimatedmass of all structural material, whicheveris less;
on or after 1 July 1986
1.2.8 A ship, irrespective of the date of construction,which is converted to a chemical tanker on or after 1 July1986 shall be treated as a chemical tanker constructed on thedate on which such conversion commences. This conversionprovision does not apply to the modification of a ship referredto in 1.14 of Annex II of MARPOL 73/78.
1.2.9 Where reference is made in this Part of the Rulesto a paragraph, all the provisions of the subparagraphs of thatdesignation shall apply.
1.2.10 For the guidelines for the provisional assessmentof liquid substances transported in bulk see MEPC.1/Circ.512.
1.3 HAZARDS AND CRITERIA FORASSIGNING CARRIAGE
REQUIREMENTS FOR PRODUCTSSUBJECT TO THIS PART OF THE
RULES
Hazards of products covered by this Part of theRules include:
1.3.1 Fire hazard, defined by flashpoint, explo-sive/flammability limits/range and autoignition temperature ofthe chemical.
1.3.2 Health hazard, defined by:.1 corrosive effects on the skin in the liquid
state; or.2 acute toxic effect, taking into account val-
ues of:LD50 (oral): a dose, which is lethal to 50%of the test subjects when administeredorally;LD50 (dermal): a dose, which is lethal to50% of the test subjects when adminis-tered to the skin;LC50 (inhalation): the concentrationwhich is lethal by inhalation to 50% of thetest subjects; or
.3 Other health effects such as carcinogenic-ity and sensitization.
RULES FOR THE CLASSIFICATION OF SHIPS 3PART 27
2009
1.3.3 Reactivity hazard, defined by reactivity:.1 with water;.2 with air;.3 with other products; or.4 of the product itself (e.g. polymerization).
1.3.4 Marine pollution hazard, as defined by:.1 bioaccumulation;.2 lack of ready biodegradibility;.3 acute toxicity to aquatic organisms;.4 chronic toxicity to aquatic organisms;.5 long term human health effects; and.6 physical properties resulting in the product
floating or sinking and so adversely af-fecting marine life.
1.3.5 For the criteria for assigning carriage require-ments for products subject to this Part of the Rules see Chapter21 of the IBC Code.
1.4 DEFINITIONS
1.4.1 Definitions and explanations relating to the gen-eral terminology of the Rules are given in Rules, Part 1 –General Requirements, Chapter 1, Section 2.
For other definitions and explanations see otherrelevant Parts of the Rules.
1.4.2 For the purpose of this Part of the Rules the fol-lowing definitions apply, unless expressly provided otherwise(see additional definitions given in individual chapters):
.1 Administration - the Government of theState whose flag the ship is entitled to fly.For Administration (Port) see Port Ad-ministration.
.2 Boiling point - the temperature at which aproduct exhibits a vapour pressure equal tothe atmospheric pressure.
.3 Breadth (B) - the maximum breadth of theship, measured amidships to the mouldedline of the frame in a ship with a metalshell and to the outer surface of the hull ina ship with a shell of any other material.The breadth (B) shall be measured in me-tres.
.4 Cargo area - that part of the ship thatcontains cargo tanks, slop tanks, cargopump-rooms including pump-rooms, cof-ferdams, ballast or void spaces adjacent tocargo tanks or slop tanks and also deck ar-eas throughout the entire length andbreadth of the part of the ship over theabove-mentioned spaces. Where inde-pendent tanks are installed in hold spaces,cofferdams, ballast or void spaces at theafter end of the aftermost hold space or atthe forward end of the forward-most holdspace are excluded from the cargo area.
.5 Cargo pump-room - a space containingpumps and their accessories for the han-dling of the products covered by this Partof the Rules.
.6 Cargo service spaces - spaces within thecargo area used for workshops, lockers and
store-rooms of more than 2 m2 in area,used for cargo-handling equipment.
.7 Cargo tank - the envelope designed tocontain the cargo.
.8 Chemical tanker - a cargo ship con-structed or adapted and used for the car-riage in bulk of any liquid product listed inChapter 17.
.9 Cofferdam - the isolating space betweentwo adjacent steel bulkheads or decks.This space may be a void space or a ballastspace.
.10 Control stations - those spaces in whichship's radio or main navigating equipmentor the emergency source of power is lo-cated or where the fire-recording or fire-control equipment is centralized. This doesnot include special fire-control equipmentwhich can be most practically located inthe cargo area.
.11 Dangerous chemicals - any liquid chemi-cals designated as presenting a safety haz-ard, based on the safety criteria for as-signing products to Chapter 17 of the IBCCode.
.12 Density - the ratio of the mass to the vol-ume of a product, expressed in terms ofkilograms per cubic metre. This applies toliquids, gases and vapours.
.13 Explosive/flammability limits/range - theconditions defining the state of fuel-oxidant mixture at which application of anadequately strong external ignition sourceis only just capable of producing flamma-bility in a given test apparatus.
.14 Hold space - the space enclosed by theship's structure in which an independentcargo tank is situated.
.15 Independent - arrangement of a piping orventing system, for example, in no wayconnected to another system and with noprovisions available for the potential con-nection to other systems.
.16 Length (L) - means 96% of the totallength on a waterline at 85% of the leastmoulded depth measured from the top ofthe keel, or the length from the foreside ofthe stem to the axis of the rudder stock onthat waterline, if that be greater. In shipsdesigned with a rake of keel, the waterlineon which this length is measured shall beparallel to the designed waterline. Thelength (L) shall be measured in metres.
.17 Noxious Liquid Substance - any sub-stance indicated in the Pollution Categorycolumn of Chapters 17 or 18 of the IBCCode, or the current MEPC.2/Circular orprovisionally assessed under the provi-sions of regulation 6.3 of MARPOL An-nex II as falling into categories X, Y or Z.
.18 Organization - the International MaritimeOrganization (IMO).
.19 Permeability (of a space) - the ratio of thevolume within that space which is as-
4 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
sumed to be occupied by water to the totalvolume of that space.
.20 Port administration - the appropriateauthority of the country in the port ofwhich the ship is loading or unloading.
.21 Products - the collective term used tocover both Noxious Liquid Substances andDangerous Chemicals.
.22 Pump-room - a space, located in the cargoarea, containing pumps and their accesso-ries for the handling of ballast and oil fuel.
.23 Recognized standards - applicable inter-national or national standards acceptable tothe Administration or standards laid downand maintained by an organization whichcomplies with the standards adopted by theOrganization which is recognized by theAdministration.
.24 Reference temperature - the temperatureat which the vapour pressure of the cargocorresponds to the set pressure of the pres-sure-relief valve.
.25 Separate – arrangement of a cargo pipingsystem or cargo vent system, for example,in no way connected to another cargo pip-ing or cargo vent system. This separationmay be achieved by the use of design oroperational methods. Operational methodsshall not be used within a cargo tank andshall consist of one of the following types:.1 removing spool pieces or valves and
blanking the pipe ends;.2 arrangement of two spectacle flanges
in series with provisions for detectingleakage into the pipe between the twospectacle flanges.
.26 Vapour pressure - the equilibrium pres-sure of the saturated vapour above a liquidexpressed in Pascals (Pa) at a specifiedtemperature.
.27 Void space - an enclosed space in thecargo area external to a cargo tank, otherthan a hold space, ballast space, oil fueltank, cargo pump-room, pump-room, orany space in normal use by personnel.
1.5 EQUIVALENTS
1.5.1 Where this Part of the Rules requires that a par-ticular fitting, material, appliance, apparatus, item of equip-ment or type thereof shall be fitted or carried in a ship, or thatany particular provision shall be made, or any procedure or ar-rangement shall be complied with, the Administration mayallow any other fitting, material, appliance, apparatus, item ofequipment or type thereof to be fitted or carried, or any otherprovision, procedure or arrangement to be made in that ship, ifit is satisfied by trial thereof or otherwise that such fitting,material, appliance, apparatus, item of equipment or typethereof or that any particular provision, procedure or arrange-ment is at least as effective as that required by this Part of theRules. However, the Administration may not allow operationalmethods or procedures to be made an alternative to a particu-lar fitting, material, appliance, apparatus, item of equipment,or type thereof, which are prescribed by this Part of the Rules,
unless such substitution is specifically allowed by this Part ofthe Rules.
1.6 TECHNICAL DOCUMENTATION
1.6.1 In addition to the technical documentation speci-fied in Rules, Part 1-General Requirements, Chapter 2/1.2 thefollowing technical data and documents shall be submitted tothe Register:
.1 drawings and strength calculations ofcargo tanks and data on their location withregard to the ship's bottom and side shell;
.2 data of the foundations and fastening ofthe cargo tanks where the cargo tanks areindependent from the hull or positioned onthe deck;
.3 drawings and schemes of cargo pipingsystems, including details of expansionfittings, flange connections, stop valvesand cargo transfer control systems;
.4 drawings and description of inert gas sys-tem;
.5 evaluation of suitability of fire extin-guishing system and fire extinguishingmedia to be used with regard to the prod-ucts intended to be carried (including cal-culation of the capacity of system);
.6 schemes and calculations of mechanicalventilation in the cargo area and otherspaces in which work is performed on thecargo, including data of materials used forconstruction of impellers and housing ofventilation fans;
.7 schemes and calculations of cargo tanksvent system;
.8 schemes and descriptions of all systemsand devices for vapour detection, tankgauging and cargo temperature measuring;
.9 schemes and calculations of bilge andballast water lines within the cargo areaincluding cofferdams, pipe tunnels, holdspaces, etc.;
.10 evaluation of suitability of insulation mate-rials used within cargo area, including de-tails of production technology, mainte-nance, quality control and vibration andsun radiation resistance;
.11 drawings of quick-closing devices forcargo systems;
.12 schemes and calculations of the cargoheating and cooling systems;
.13 drawings of cargo tank pressure/vacuumdevices;
.14 schemes of cargo pressure and temperaturecontrol;
.15 electric circuit diagrams for measuring andsignalling instruments;
.16 electric circuit diagrams for remote con-trolled valves and automatic and remotestopping of electrical machinery;
.17 arrangement plans of electrical equipmentin cargo area;
.18 cable laying plans within cargo area;
RULES FOR THE CLASSIFICATION OF SHIPS 5PART 27
2009
.19 plans of electric bonding for electricalequipment, cables and piping within cargoarea;
.20 evaluation of suitability of electricalequipment within cargo area intended tobe used;
.21 data about preventive measures againstadditional stresses of independent tankscaused by the adjacent hull structure.
1.6.2 A general arrangement plan or special drawingsshall be prepared showing location of:
.1 cargo tank access hatches, tank washingmachine hatches and all other cargo tankopenings;
.2 doors, hatches and all other openings ingas-dangerous spaces and areas (see Rules,Part 12 - Electrical Equipment, 19.2);
.3 cargo tank vent outlets and air inlets andoutlets and outlets and outlets of ventilat-ing systems in cargo area;
.4 entrances, doors, sidescuttles, air inlets andoutlets and other openings to accommoda-tion, service and machinery spaces andcontrol stations in superstructure and otherspaces facing the cargo area;
.5 cargo tanks grouped, where necessary, inorder to achieve segregation of mutuallyincompatible cargoes.
1.6.3 A list of cargoes intended to be carried shall besubmitted to the Register for consideration. For product pro-posed for carriage but not listed in Chapter 17 and Chapter 18,before inclusion in the approved List of products the ship issuitable to carry, the procedure prescribed in 1.2.6 shall becomplied with.
6 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
2 SHIP SURVIVALCAPABILITY AND LOCATION OF
CARGO TANKS
2.1 GENERAL
2.1.1 Ships, subject to this Part of the Rules, shall sur-vive the normal effects of flooding following assumed hulldamage caused by some external force (see 2.5). In addition,to safeguard the ship and the environment, the cargo tanks ofcertain types of ships (see 2.1.2) shall be protected from pene-tration in the case of minor damage to the ship resulting, forexample, from contact with a jetty or tug, and given a measureof protection from damage in the case of collision or strand-ing, by locating them at specified minimum distances inboardfrom the ship's shell plating (see 2.6). Both the assumed dam-age and the proximity of the cargo tanks to the ship's shellshall be dependent upon the degree of hazard presented by theproducts to be carried.
2.1.2 Ships, subject to this Part of the Rules, shall bedesigned to one of the following standards:
.1 A type 1 ship is a chemical tanker intendedto transport Chapter 17 products with verysevere environmental and safety hazardswhich require maximum preventive meas-ures to preclude an escape of such cargo.
.2 A type 2 ship is a chemical tanker intendedto transport Chapter 17 products with ap-preciably severe environmental and safetyhazards which require significant preven-tive measures to preclude an escape ofsuch cargo.
.3 A type 3 ship is a chemical tanker intendedto transport Chapter 17 products with suf-ficiently severe environmental and safetyhazards which require a moderate degreeof containment to increase survival capa-bility in a damaged condition.
Thus, a type 1 ship is a chemical tanker intendedfor the transportation of products considered to present thegreatest overall hazard and type 2 and type 3 for products ofprogressively lesser hazards. Accordingly, a type 1 ship shallsurvive the most severe standard of damage and its cargotanks shall be located at the maximum prescribed distance in-board from the shell plating.
2.1.3 The ship type required for individual products isindicated in column e in the table of Chapter 17.
2.1.4 If a ship is intended to carry more than oneproduct listed in Chapter 17, the standard of damage shall cor-respond to that product having the most stringent ship type re-quirement. The requirements for the location of individualcargo tanks, however, are those for ship types related to the re-spective products intended to be carried.
2.2 FREEBOARD AND INTACTSTABILITY
2.2.1 Ships subject to this Part of the Rules may be as-signed the minimum freeboard permitted by the InternationalConvention on Load Lines in force. However, the draught as-sociated with the assignment shall not be greater than themaximum draught otherwise permitted by this Part of theRules.
2.2.2 The stability of the ship in all seagoing condi-tions shall be to a standard which is acceptable to the Register(see Rules, Part 4 – Stability, 3.4).
2.2.3 When calculating the effect of free surfaces ofconsumable liquids for loading conditions it shall be assumedthat, for each type of liquid, at least one transverse pair or asingle centre tank has a free surface and the tank or combina-tion of tanks to be taken into account shall be those where theeffect of free surfaces is the greatest. The free surface effect inundamaged compartments shall be calculated by a method ac-ceptable to the (see Rules, Part 4 – Stability, 3.4).
2.2.4 Solid ballast shall not normally be used in dou-ble-bottom spaces in the cargo area. Where, however, becauseof stability considerations, the fitting of solid ballast in suchspaces becomes unavoidable, then its disposition shall be gov-erned by the need to ensure that the impact loads resultingfrom bottom damage are not directly transmitted to the cargotank structure.
2.2.5 The master of the ship shall be supplied with aloading and stability information booklet. This booklet shallcontain details of typical service and ballast conditions, provi-sions for evaluating other conditions of loading and a sum-mary of the ship's survival capabilities (see MSCCirc.406/Rev.1). In addition, the booklet shall contain suffi-cient information to enable the master to load and operate theship in a safe and seaworthy manner, to the satisfaction of theRegister (see Rules, Part 4 – Stability, 1.5).
2.2.6 No loading conditions, other than those con-tained in the approved Loading and Stability InformationBooklet, shall be used unless previously approved by theRegister.
Alternatively, such cases may be examined bythe master or a responsible officer when a loading instrumentapproved in accordance with requirements specified in Rules,Part 2 – Hull, 4.1 is installed onboard.
2.2.7 In no case shall be distance between the top ofsolid ballast and cargo tank bottom be less than the assumedmaximum vertical extent of the bottom damage.
The solid ballast shall be of concrete block orsimilar materials which can be fitted securely.
2.3 SHIPSIDE DISCHARGES BELOWTHE FREEBOARD DECK
2.3.1 The provision and control of valves fitted to dis-charges led through the shell from spaces below the freeboarddeck or from within the super-structures and deck-houses onthe freeboard deck fitted with weathertight doors shall complywith the requirements of the relevant regulation of the Inter-
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2009
national Convention on Load Lines in force, except that thechoice of valves shall be limited to:
.1 one automatic non-return valve with apositive means of closing from above thefreeboard deck; or
.2 where the vertical distance from the sum-mer load waterline to the inboard end ofthe discharge pipe exceeds 0.01L, twoautomatic non-return valves without posi-tive means of closing, provided that theinboard valve is always accessible for ex-amination under service conditions.
2.3.2 For the purpose of this chapter, “summer loadline“ and “freeboard deck“ have the meanings as defined inthe International Convention on Load Lines in force.
2.3.3 The automatic non-return valves referred to in2.3.1.1 and 2.3.1.2 shall be fully effective in preventing ad-mission of water into the ship, taking into account the sinkage,trim and heel in survival requirements in 2.9, and shall complywith recognized standards (see Rules, Part 8 – Piping, 1.4 and1.5).
2.3.4 The requirements in 2.3.1 do not apply to theoverboard discharges led through the shell from within super-structures and deck-houses located above the second super-structure deck.
2.4 CONDITIONS OF LOADING
2.4.1 Damage survival capability shall be investigatedon the basis of loading information submitted to the Registerfor all anticipated conditions of loading and variations indraught and trim. Ballast conditions where the chemical tankeris not carrying products covered by this Part of the Rules, or iscarrying only residues of such products, need not be consid-ered.
2.5 DAMAGE ASSUMPTIONS
2.5.1 The assumed maximum extent of damage shallbe as prescribed in Table 2.5.1-1:
2.5.2 If any damage of a lesser extent than the maxi-mum damage specified in 2.5.1 would result in a more severecondition, such damage shall be considered.
Table 2.5.1-1
.1 Side damage:
.1.1 Longitudinal extent 1/3L2/3 or 14.5 m, whichever isless
.1.2 Transverse extent B/5 or 11.5 m, whichever is less(measured inboard from the ship‘sside at right angles to the centre-line at the level of the summerload line)
.1.3 Vertical extent: upwards without limit (measuredfrom the moulded line of the bot-tom shell plating at centreline)
.2 Bottom damage: For 0.3L from the forward per-pendicular of the ship
Any other part of the ship
.2.1 Longitudinal extent: 1/3L2/3 or 14.5 m, whichever isless
1/3L2/3 or 5 m, whichever is less
.2.2 Transverse extent: B/6 or 10 m, whichever is less B/6 or 5 m, whichever is less
.2.3 Vertical extent: B/15 or 6 m, whichever is less[measured from the moulded lineof the bottom shell plating at cen-treline (see 2.6.2)]
B/15 or 6 m, whichever is less[measured from the moulded lineof the bottom shell plating atcentreline (see 2.6.2)]
8 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
2.6 LOCATION OF CARGO TANKS
2.6.1 Cargo tanks shall be located at the followingdistances inboard:
.1 Type 1 ships: from the side shell plating,not less than the transverse extent ofdamage specified in 2.5.1.1.2, and fromthe moulded line of the bottom shellplating at centreline, not less than thevertical extent of damage specified in2.5.1.2.3, and nowhere less than 760 mmfrom the shell plating. This requirementdoes not apply to the tanks for dilutedslops arising from tank washing.
.2 Type 2 ships: from the moulded line ofthe bottom shell plating at centreline, notless than the vertical extent of damagespecified in 2.5.1.2.3, and nowhere lessthan 760 mm from the shell plating. Thisrequirement does not apply to the tanksfor diluted slops arising from tank wash-ing.
.3 Type 3 ships: no requirement.
2.6.2 Except for type 1 ships, suction wells installedin cargo tanks may protrude into the vertical extent of bottomdamage specified in 2.5.1.2.3 provided that such wells are assmall as practicable and the protrusion below the inner bot-tom plating does not exceed 25% of the depth of the doublebottom or 350 mm, whichever is less. Where there is no dou-ble bottom, the protrusion of the suction well of independenttanks below the upper limit of bottom damage shall not ex-ceed 350 mm. Suction wells installed in accordance with thisparagraph may be ignored in determining the compartmentsaffected by damage.
2.6.3 Any cargo tank, irrespective of its location,may be used for collecting contaminated cargo pump roombilge water or tank washings, as an exception to the require-ments in 2.6.1.1 and .2.
2.6.4 In general, the area of suction wells shall not begreater than that required to accommodate cargo pumps, suc-tion pipes, valves, heating coils etc., and to ensure efficientflow and the necessary access for cleaning and maintenance.
The requirements for the total retain quantity ofresidue not in excess of 0.075 m3 specified in 12.3 of AnnexII of MARPOL 73/78 shall also be taken into consideration.
2.7 FLOODING ASSUMPTIONS
2.7.1 The requirements of 2.9 shall be confirmed bycalculations which take into consideration the design charac-teristics of the ship; the arrangements, configuration andcontents of the damaged compartments; the distribution,relative densities and the free surface effects of liquids; andthe draught and trim for all conditions of loading.
2.7.2 The permeabilities of spaces assumed to bedamaged shall be as follows:
Spaces Permeabilities
Appropriated to stores 0.60
Occupied by accommodation 0.95
Occupied by machinery 0.85
Voids 0.95
Intended for consumable liquids 0 to 0.95*
Intended for other liquids 0 to 0.95*
*Note: The permeability of partially filled compartments shall beconsistent with the amount of liquid carried in the compartment.
2.7.3 Wherever damage penetrates a tank containingliquids it shall be assumed that the contents are completelylost from that compartment and replaced by salt water up tothe level of the final plane of equilibrium.
2.7.4 Every watertight division within the maximumextent of damage defined in 2.5.1 and considered to havesustained damage in positions given in 2.8.1 shall be assumedto be penetrated. Where damage less than the maximum isbeing considered in accordance with 2.5.2, only watertightdivisions or combinations of watertight divisions within theenvelope of such lesser damage shall be assumed to be pene-trated.
2.7.5 The ship shall be so designed as to keep un-symmetrical flooding to the minimum consistent with effi-cient arrangements.
2.7.6 Equalization arrangements requiring mechani-cal aids such as valves or cross-levelling pipes, if fitted, shallnot be considered for the purpose of reducing an angle ofheel or attaining the minimum range of residual stability tomeet the requirements of 2.9 and sufficient residual stabilityshall be maintained during all stages where equalization isused. Spaces which are linked by ducts of large cross-sectional area may be considered to be common.
2.7.7 If pipes, ducts, trunks or tunnels are situatedwithin the assumed extent of damage penetration, as definedin 2.5, arrangements shall be such that progressive floodingcannot thereby extend to compartments other than those as-sumed to be flooded for each case of damage.
2.7.8 The buoyancy of any superstructure directlyabove the side damage shall be disregarded. The unfloodedparts of superstructures beyond the extent of damage, how-ever, may be taken into consideration provided that:
.1 they are separated from the damagedspace by watertight divisions and the re-quirements of 2.9.3 in respect of theseintact spaces are complied with; and
.2 openings in such divisions are capable ofbeing closed by remotely operated slidingwatertight doors from a readily accessibleplace in case of damage and unprotectedopenings are not immersed within theminimum range of residual stability re-quired in 2.9; however, the immersion ofany other openings capable of being se-curely closed weathertight at final equi-librium may be permitted.
2.7.9 Tunnels, ducts, pipes, doors, bulkheads anddecks which might form watertight boundaries of intact
RULES FOR THE CLASSIFICATION OF SHIPS 9PART 27
2009
spaces in the case of assumed damage (see 2.5.1) shall haveminimum strength adequate to withstand the pressure heightcorresponding to the deepest equilibrium waterline in dam-aged conditions.
2.7.10 The calculations made as required in 2.7.1 shallallow for preparing maximum permissible VCG-curves (off-sets) or, alternatively, the minimum permissible metacentricheights which shall be included in the stability manual.
It is recommended to prepare individual curves(offsets) for each considered damage case, except those casesfor which can be demonstrated that will not result in a severecondition.
2.7.11 When preferred by the Owner, damage stabilitycalculations may be performed for a limited number of load-ing conditions shown in the approved Loading and StabilityInformation Booklet. In this case the curves (offsets) pre-scribed in 2.7.10 are not required and the loading limitationsshall be appended to the International Certificate of Fitnessfor the Carriage of Dangerous Chemicals in Bulk.
2.7.12 Where damage survival capability criteria (see2.9) satisfies for conditional loading condition as specified in2.7.13 the requirements for calculations prescribed in 2.7.10and 2.7.11 may be dispensed with.
2.7.13 The conditional loading condition shall corre-spond to the loading condition with a maximum draught ofthe ship and maximum permissible trim (by stern or by bow,whichever gives more unfavourable results) as well as high-est possible centre of gravity above base line (taking into ac-count free surface effect) and empty damaged compartmentsfor each considered damage case.
2.8 STANDARD OF DAMAGE
2.8.1 Ships shall be capable of surviving the damageindicated in 2.5 with the flooding assumptions in 2.7 to theextent determined by the ship's type according to the follow-ing standards:
.1 A type 1 ship shall be assumed to sustaindamage anywhere in its length.
.2 A type 2 ship of more than 150 m inlength shall be assumed to sustain dam-age anywhere in its length.
.3 A type 2 ship of 150 m in length or lessshall be assumed to sustain damage any-where in its length except involving eitherof the bulkheads bounding a machineryspace located aft.
.4 A type 3 ship of more than 225 m inlength shall be assumed to sustain dam-age anywhere in its length.
.5 A type 3 ship of 125 m in length or morebut not exceeding 225 m in length shallbe assumed to sustain damage anywherein its length except involving either of thebulkheads bounding a machinery spacelocated aft.
.6 A type 3 ship below 125 m in length shallbe assumed to sustain damage anywherein its length except involving damage tothe machinery space when located aft.However, the ability to survive the
flooding of the machinery space shall beconsidered by the Register.
2.8.2 In the case of small type 2 and type 3 shipswhich do not comply in all respects with the appropriate re-quirements of 2.8.1.3 and 2.8.1.6, special dispensation mayonly be considered by the Register provided that alternativemeasures can be taken which maintain the same degree ofsafety. The nature of the alternative measures shall be ap-proved and clearly stated and be available to the port Ad-ministration. Any such dispensation shall be duly noted onthe International Certificate of Fitness for the Carriage ofDangerous Chemicals in Bulk.
2.8.3 The longitudinal extent of damage to the super-structure in the case of side damage where the machineryspace is regarded as one-space flooding in 2.8.1, shall gener-ally to be the same as the longitudinal extent of the side dam-age to the machinery space (see Figure 2.8.3-1).
Figure 2.8.3-1Longitudinal extent of damage to superstructure
2.8.4 If the concept of a stepped machinery spaceforward bulkhead is applied (see 3.2.1), for damage stabilityconsiderations in 2.8.1.3 and 5 when such a bulkhead con-tains a step more than 3 m in length, damage shall be treatedas shown in Figure 2.8.4-1
Figure 2.8.4-1Damage to stepped machinery space forward bulkhead
10 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
2.8.5 For the type 3 ships of less than 125 m inlength, but no less than 70 m, the ability to survive theflooding of the machinery space in accordance with survivalrequirements in 2.9 shall apply only, as a minimum.
Alternative proposals for equivalent survivalability may be considered by the Register.
2.8.6 In the case of type 2 and type 3 ships of lessthan 70 m in length special dispensation with regard to thecompliance with the appropriate requirements of 2.8.1.3 and2.8.1.6 (see 2.8.2) shall be in accordance with the following:
.1 Assumed extent of damage shall be in ac-cordance with 2.5 and 2.8.1.3 and 2.8.1.6.
.2 Downflooding point and angle of heelshall be in accordance with 2.9.2 and2.9.3.
.3 The area with positive sign of the rightinglever curve within the range from the ar-bitrary point between the final stage ofequilibrium after flooding and 25° (or 30°if no deck immersion occurs) to 20° shallbe not less than 0.0175 m⋅rad.
.4 The maximum value of GZ is not speci-fied.
2.9 SURVIVAL REQUIREMENTS
2.9.1 Ships subject to this Part of the Rules shall becapable of surviving the assumed damage specified in 2.5 tothe standard provided in 2.8 in a condition of stable equilib-rium and shall satisfy the criteria as specified in 2.9.2 and2.9.3.
2.9.2 In any stage of flooding:.1 the waterline, taking into account sink-
age, heel and trim, shall be below thelower edge of any opening through whichprogressive flooding or downfloodingmay take place. Such openings shall in-clude air pipes and openings which areclosed by means of weathertight doors orhatch covers and may exclude thoseopenings closed by means of watertightmanhole covers and watertight flushscuttles, small watertight cargo tank hatchcovers which maintain the high integrityof the deck, remotely operated watertightsliding doors, and sidescuttles of the non-opening type;
.2 the maximum angle of heel due to un-symmetrical flooding shall not exceed25°, except that this angle may be in-creased to 30° if no deck immersionocurs;
.3 the residual stability during intermediatestages of flooding shall be to the satisfac-tion of the Register. However, it shallnever be significantly less than that re-quired by 2.9.3.
2.9.3 At final equilibrium after flooding:.1 the righting-lever curve shall have a
minimum range of 20° beyond the posi-tion of equilibrium in association with amaximum residual righting lever of at
least 0.1 m within the 20° range; the areaunder the curve within this range shall notbe less than 0.0175 m radians. Unpro-tected openings shall not be immersedwithin this range unless the space con-cerned is assumed to be flooded. Withinthis range, the immersion of any of theopenings listed in 2.9.2.1 and otheropenings capable of being closed weath-ertight may be permitted; and
.2 the emergency source of power shall becapable of operating.
2.9.4 The words “to the satisfaction of the Register”in 2.9.2.3 means as follows. In ordinary cases, the final stageof flooding is considered most severe, but the most severecondition may be encountered during intermediate stages offlooding involving replacement of sea water in the damagedspace. In this connection, stability during such intermediatestages of flooding shall be considered when specifically re-quested by the Register.
2.9.5 The survival requirements at the final stage ofequilibrium after flooding shall be in accordance with Figure2.9.5-1.
Figure 2.9.5-1Stability criteria at final equilibrium after flooding
Note: The initial point of calculation of the stability range atan angle of heel of 20° may be taken arbitrarily at anyintermediate point between the angle of heel at the finalstage of equilibrium and the maximum angle of heel.
RULES FOR THE CLASSIFICATION OF SHIPS 11PART 27
2009
3 SHIP ARRANGEMENTS
3.1 CARGO SEGREGATION
3.1.1 Unless expressly provided otherwise, tankscontaining cargo or residues of cargo subject to this Part ofthe Rules shall be segregated from accommodation, serviceand machinery spaces and from drinking water and stores forhuman consumption by means of a cofferdam, void space,cargo pump-room, pump-room, empty tank, oil fuel tank orother similar space.
3.1.2 Cargo piping shall not pass through any ac-commodation, service or machinery space other than cargopump-rooms or pump-rooms.
3.1.3 Cargoes, residues of cargoes or mixtures con-taining cargoes, which react in a hazardous manner withother cargoes, residues or mixtures, shall:
.1 be segregated from such other cargoes bymeans of a cofferdam, void space, cargopump-room, pump-room, empty tank, ortank containing a mutually compatiblecargo;
.2 have separate pumping and piping sys-tems which shall not pass through othercargo tanks containing such cargoes, un-less encased in a tunnel; and
.3 have separate tank venting systems.
3.1.4 If cargo piping systems or cargo venting sys-tems shall be separated this separation may be achieved bythe use of design or operational methods. Opertional methodsshall not be used within a cargo tank and shall consist of oneof the following types:
.1 removing spool-pieces or valves andblanking the pipe ends;
.2 arrangement of two spectacle flanges inseries, with provisions for detecting leak-age into the pipe between the two specta-cle flanges.
3.1.5 Cargoes subject to this Part of the Rules shallnot be carried in either the fore or aft peak tank.
3.1.6 For cargo tanks and slop tanks, neither linearcontact nor point contacts with accommodation spaces, serv-ice spaces, machinery space, etc. shall be accepted. Further,no segregation of spaces in contact by means of slantingplates shall be accepted.
3.1.7 Cargo piping shall not pass through the spacesspecified in 3.1.2 and, in addition, through spaces such asfuel oil tanks, fresh water tanks and control stations.
3.1.8 The common edge in a cruciform joint, i.e. thelinear contacts and point contacts, either vertically or hori-zontally (see Figure 3.1.8-1) may be accepted as a “doublebarrier” for the purpose of segregation as follows:
.1 between mutually hazardous reactive car-goes;
.2 between water reactive cargoes and wa-ter.
Figure 3.1.8-1Segregation of mutually hazardous reactive cargoes and wa-
ter reactive cargoes and water
3.2 ACCOMMODATION, SERVICEAND MACHINERY SPACES AND
CONTROL STATIONS
3.2.1 No accommodation or service spaces or controlstations shall be located within the cargo area except over acargo pump-room recess or pump-room recess that complieswith requirements specified in Rules, Part 17 – Fire Protec-tion, 2.4.3.2 and no cargo or slop tank shall be aft of the for-ward end of any accommodation.
3.2.2 In order to guard against the danger of hazard-ous vapours, due consideration shall be given to the locationof air inlets, air outlets and other openings into accommoda-tion, service and machinery spaces and control stations in re-lation to cargo piping and cargo vent systems.
3.2.3 Entrances, air inlets, air outlets and otheropenings to accommodation, service and machinery spacesand control stations shall not face the cargo area. They shallbe located on the end bulkhead not facing the cargo areaand/or on the outboard side of the superstructure or deck-house at a distance of at least 4% of the length (L) of the shipbut not less than 3 m from the end of the superstructure ordeck-house facing the cargo area. This distance, however,need not exceed 5 m. No doors shall be permitted within thelimits mentioned above, except that doors to those spaces nothaving access to accommodation and service spaces andcontrol stations, such as cargo control stations and store-rooms, may be fitted. Where such doors are fitted, theboundaries of the space shall be insulated to A-60 standard.Bolted plates for removal of machinery may be fitted withinthe limits specified above. Wheelhouse doors and wheel-house windows may be located within the limits specifiedabove so long as they are so designed that a rapid and effi-cient gas - and vapour-tightening of the wheelhouse can beensured. Windows and sidescuttles facing the cargo area andon the sides of the superstructures and deck-houses within thelimits specified above shall be of the fixed (non-opening)type. Such sidescuttles in the first tier on the main deck shallbe fitted with inside covers of steel or equivalent material.
3.2.4 When segregated by a gastight deck and wellventilated, such a space is not electrically hazardous space,and in this case, arrangement of accommodation spaces,service spaces or control stations above fuel oil tanks adja-cent to cargo tanks in the poop as given in Figure 3.2.4-1may be accepted.
12 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
Figure 3.2.4-1Location of accommodation spaces above fuel oil tanks
3.2.5 Store rooms where doors may be fitted withinthe limits mentioned in 3.2.3 are restricted to lockers con-taining cargo related and safety equipment and decontamina-tion shower spaces (see 14.1 and 14.3).
3.2.6 Entrances and openings to service spaces lo-cated forward of the cargo area may not face such area. How-ever, for ships of less than 70 m in length alternative ar-rangements may be specially considered by the Register.
3.2.7 The gastight wheelhouse doors and windowsshall be fitted with packing and dog bolts. These windows,doors and clear view screens shall be hose-tested at a pres-sure of 0.2 N/mm2. To ensure gastightness of the clear viewscreen, an additional window fitted with dog bolts or othermeans of gastight capable of tightening the window panewhen the screen is not rotating shall be provided.
3.2.8 Regardless of the cargo to be carried, meansshall be provided to keep deck spills not flowing along thesides of the superstructures and deck houses where entrances,air inlets and outlets and other openings as specified in 3.2.3are located. This may be accomplished by provision of apermanent continuous coaming extending from side to sideand having height of not less than 300 mm or a superstruc-ture/deckhouse front shall be continued to the sides of theship in the form of a sill.
3.2.9 Continuous coaming having height of not lessthan 150 mm above the deck and nowhere less than 50 mmabove the upper edge of the shear strake shall be fitted on theship’s sides to keep any spills on deck in the cargo area.
3.2.10 Escape routes from the machinery spaces shallnot terminate within the coamings or within a distance of 3 mbeyond the coamings specified in 3.2.8.
3.2.11 Chain lockers shall be arranged outside thecargo area, except for cofferdams, ballast tanks, etc.
3.2.12 Paint lockers, regardless of their use, shall notbe located above the cargo area (see MSC.1/Circ.1241).
3.2.13 For the voluntary structural guidelines for shipscarrying liquids in bulk containing benzene seeMSC/Circ.1220.
3.3 CARGO PUMP-ROOMS
3.3.1 Cargo pump-rooms shall be so arranged as toensure:
.1 unrestricted passage at all times from anyladder platform and from the floors; and
.2 unrestricted access to all valves necessaryfor cargo handling for a person wearingthe required personnel protective equip-ment and/or safety equipment.
3.3.2 Permanent arrangements shall be made forhoisting an injured person with a rescue line while avoidingany projecting obstacles.
3.3.3 Guard railings shall be installed on all laddersand platforms.
3.3.4 Normal access ladders shall not be fitted verti-cal and shall incorporate platforms at suitable intervals.
3.3.5 Means shall be provided to deal with drainageand any possible leakage from cargo pumps and valves incargo pump-rooms. The bilge system serving the cargopump-room shall be operable from outside the cargo pump-room. One or more slop tanks for storage of contaminatedbilge water or tank washings shall be provided. A shore con-nection with a standard coupling or other facilities shall beprovided for transferring contaminated liquids to onshore re-ception facilities.
3.3.6 Pump discharge pressure gauges shall be pro-vided outside the cargo pump-room.
3.3.7 Where machinery, such as cargo pumps andfans, is driven by shafting passing through a bulkhead ordeck, gastight seals with efficient lubrication or other meansof ensuring the permanence of the gas seal shall be fitted inway of the bulkhead or deck (see Rules, Part 7 – MachineryInstallation, 1.12).
3.3.8 Cargo pump-rooms and pump-rooms shall beseparated from adjacent spaces by means of gas-tightboundaries and may not give direct access to other spaces ex-cept as permitted in 3.4.1.
3.3.9 In general a cargo pump-room shall be pro-vided with one set of access/escape stairs. Where it is envis-aged that personnel are normally employed in a pump-roomor the pump-room is unusually large, the Register may re-quire an additional means of escape. Two doorways from thepump-room house, emerging above the weather deck arepreferable.
3.3.10 For other technical requirements relating toprotection at work in cargo pump-room national requirementsof the flag State the ship is entitled to fly shall be observed.
3.3.11 The requirement for discharge pressure gaugesin 3.3.6 shall apply also to tank cleaning pumps, bilge pumps,etc. used for handling cargoes and liquids containing cargoesin general.
3.3.12 The shaft seals, required in 3.3.7, of a type forperiodical feeding of grease shall not be accepted. Only con-tinuous gastight sealing type is acceptable. These shaft sealsshall be provided outside the cargo pump room. (See Figure3.3.12-1).
RULES FOR THE CLASSIFICATION OF SHIPS 13PART 27
2009
Figure 3.3.12-1Lubrication of shaft gastight seal
3.3.13 In ships of 500 gross tonnage and over, carry-ing products with a flash point not exceeding 60°C, cargopump-rooms shall additionally comply with following:
.1 cargo pumps, ballast pumps and strippingpumps temperature shall be monitored todetect overheating due to pump failures(see 15.21);
.2 lighting except emergency lighting, shallbe interlocked with ventilation such thatthe ventilation shall be in operation whenswitching on the lighting. Failure of theventilation system shall not cause thelighting to go out.Also, where the lighting in the cargopump-rooms is used as the emergencylighting the loss of the main source ofelectrical power shall not prevent opera-tion of the emergency lighting (seeMSC/Circ.1037);
.3 bilge level monitoring devices shall beprovided together with audible and visualalarm signal effected in the cargo controlroom and navigation bridge space. Bilgehigh-level alarms are acceptable as an al-ternative means for the level monitoringdevices (see MSC/Circ.1037).
3.4 ACCESS TO SPACES IN THECARGO AREA
3.4.1 Access to cofferdams, ballast tanks, cargo tanksand other spaces in the cargo area shall be direct from theopen deck and such as to ensure their complete inspection.Access to double-bottom spaces may be through a cargopump-room, pump-room, deep cofferdam, pipe tunnel orsimilar compartments, subject to consideration of ventilationaspects.
3.4.2 For access through horizontal openings, hatchesor manholes, the dimensions shall be sufficient to allow aperson wearing a self-contained air-breathing apparatus andprotective equipment to ascend or descend any ladder withoutobstruction and also to provide a clear opening to facilitatethe hoisting of an injured person from the bottom of thespace. The minimum clear opening shall be not less than 600mm by 600 mm.
3.4.3 For access through vertical openings, or man-holes providing passage through the length and breadth of thespace, the minimum clear opening shall be not less than 600
mm by 800 mm at a height of not more than 600 mm fromthe bottom shell plating unless gratings or other footholds areprovided.
3.4.4 Smaller dimensions may be approved by theRegister in special circumstances, if the ability to traversesuch openings or to remove an injured person can be provedto the satisfaction of the Register.
3.4.5 Although fuel oil tanks are not included in thedefinition of “cargo area” where such tanks are adjacent tocargo tanks (see 3.1.1) the requirements of 3.4.1 shall apply.
3.4.6 To cater for restrictions in the movement ofpersonnel and to limit the time needed for a possible emer-gency escape, two separate means of access shall generallybe fitted in double bottom tanks and similar spaces (see 3.4.1)where obstructions impede movement. The two accessesshall be as widely separated as practicable. Only one accessmay be approved in special circumstances if, it being under-stood that the escapes have the required dimensions, the abil-ity to readily traverse the space and to remove an injured per-son can be proved to the satisfaction of the Register.
3.4.7 Pipe tunnels shall be provided with not lessthan two separate access openings fitted on opposite ends oftunnel, at distances not exceeding 60 m, and leading to theopen deck. The Register may accept pipe tunnel openingsleading to the cargo pump-room, pump-room or void spacesin the cargo area provided they are fitted with means of clo-sure approved by the Register (see Rules, Part 3 – HullEquipment, 7.12) and shall be closed during normal ship’sservice, except when entrance to pipe tunnel is necessary.
3.4.8 Dimensions and structure of pipe tunnels shallbe such as to ensure their complete inspection and repair ofpiping and removal of an injured person.
3.4.9 For the purpose of 3.4.2 and 3.4.3 the followingshall apply:
.1 The term “minimum opening of not lessthan 600 mm by 600 mm” means thatsuch openings may have corner radii upto 100 mm maximum (see Figure 3.4.9.1-1).
Figure 3.4.9.1-1Shape of minimum clear opening of 600 mm by 600 mm
.2 The term “minimum opening of not less600 mm by 800 mm” includes also anopening as shown in Figure 3.4.9.2-1.
14 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
Figure 3.4.9.2-1
.3 For the pressure tanks only, access open-ings may be circular openings having adiameter of not less than 600 mm.
.4 At access openings and in the vicinity nopipes or equipment that interfere with theaccess route shall be arranged.
3.5 BILGE AND BALLASTARRANGEMENTS
3.5.1 Pumps, ballast lines, vent lines and other simi-lar equipment serving permanent ballast tanks shall be inde-pendent of similar equipment serving cargo tanks and ofcargo tanks themselves. Discharge arrangements for perma-nent ballast tanks sited immediately adjacent to cargo tanksshall be outside machinery spaces and accommodationspaces. Filling arrangements may be in the machinery spacesprovided that such arrangements ensure filling from tankdeck level and non-return valves are fitted.
3.5.2 Filling of ballast in cargo tanks may be ar-ranged from deck level by pumps serving permanent ballasttanks, provided that the filling line has no permanent connec-tion to cargo tanks or piping and that non-return valves arefitted.
3.5.3 Bilge pumping arrangements for cargo pump-rooms, pump-rooms, void spaces, slop tanks, double-bottomtanks and similar spaces shall be situated entirely within thecargo area except for void spaces, double-bottom tanks andballast tanks where such spaces are separated from tankscontaining cargo or residues of cargo by a double bulkhead.
3.5.4 An eductor situated in the cargo area usingwater power from pumps in the machinery spaces may be ac-cepted as a means to discharge permanent ballast from tanksand/or double bottoms adjacent to cargo tanks (see 3.5.1),provided the supply line is above deck level and a non-returnvalve and removable spool piece are fitted in the supply lineoutside the machinery space (see Figure 3.5.4-1).
Figure 3.5.4-1Ballast discharge arrangement
3.5.5 The ballast filling line fitted with stop valveand non-return valve, as shown in Figure 3.5.5-1 shall be ex-clusively used for filling and no for discharging (see 3.5.1).
Figure 3.5.5-1Ballast filling arrangement
3.5.6 When a filling of cargo tank with ballast is per-formed at a deck level by means of pumps serving permanentballast tanks, a removable spool piece or flexible hose plus ashut-off valve, in addition to the required non-return valve,shall be fitted on the inlet to the cargo tank (see 3.5.2).
In this case the filling pipe shall be extended asclose to the bottom of the tank as practicable, to minimisegeneration of the static electricity (see Figure 3.5.6-1).
Figure 3.5.6-1Ballast filling arrangements
3.5.7 The relaxation relevant to the bilge system forspaces which are separated from cargo tanks by a doublebulkhead (see 3.5.3) shall be understood as limited to spacesnot enclosing piping which may contain cargo or cargo resi-dues.
3.5.8 The use of cargo pumps as bilge pumps is sub-ject to the following:
RULES FOR THE CLASSIFICATION OF SHIPS 15PART 27
2009
.1 Cargo pumps may also be used as bilgepumps provided they are connected to thebilge piping through a shut-off valve anda non-return valve arranged in series.
.2 In the case of carriage of corrosive liq-uids, one of the cargo pumps may be usedfor bilge service provided it is connectedto the bilge piping through two shut-offvalves plus a non-return valve arranged inseries.
3.6 PUMP AND PIPELINEIDENTIFICATION
3.6.1 Provisions shall be made for the distinctivemarking of pumps, valves and pipelines to identify the serv-ice and tanks which they serve.
3.6.2 The peel-resistant tapes or paint coat shall beused to clearly identify respective pipes.
3.7 BOW OR STERN LOADING ANDUNLOADING ARRANGEMENTS
3.7.1 Cargo piping may be fitted to permit bow orstern loading and unloading. Portable arrangements shall notbe permitted.
3.7.2 Bow or stern loading and unloading lines shallnot be used for the transfer of products required to be carriedin type 1 ships. Bow and stern loading and unloading linesshall not be used for the transfer of cargoes emitting toxicvapours required to comply with 15.12.1, unless specificallyapproved by the Register.
3.7.3 In addition to 5.1, the following provisions ap-ply:
.1 The piping outside the cargo area shall befitted at least 760 mm inboard on theopen deck. Such piping shall be clearlyidentified and fitted with a shut-off valveat its connection to the cargo piping sys-tem within the cargo area. At this loca-tion, it shall also be capable of beingseparated by means of a removable spool-piece and blank flanges when not in use.
.2 The shore connection shall be fitted witha shut-off valve and a blank flange.
.3 The piping shall be full-penetration butt-welded, and fully radiographed. Flangeconnections in the piping shall only bepermitted within the cargo area and at theshore connection.
.4 Spray shields shall be provided at theconnections specified in 3.7.3.1 as well ascollecting trays of sufficient capacity,with means for the disposal of drainage.
.5 The piping shall be self-draining to thecargo area and preferably into a cargotank. Alternative arrangements for drain-ing the piping may be accepted by theRegister.
.6 Arrangements shall be made to allowsuch piping to be purged after use and
maintained gas-safe when not in use. Thevent pipes connected with the purge shallbe located in the cargo area. The relevantconnections to the piping shall be pro-vided with a shut-off valve and blankflange.
3.7.4 Entrances, air inlets, air outlets and otheropenings to accommodation, service and machinery spacesand control stations shall not face the cargo shore-connectionlocation of bow or stern loading and unloading arrangements.They shall be located on the outboard side of the superstruc-ture or deck-house at a distance of at least 4% of the length ofthe ship but not less than 3 m from the end of the house fac-ing the cargo shore-connection location of the bow or sternloading and unloading arrangements. This distance, however,need not exceed 5 m. Sidescuttles facing the shore-connection location and on the sides of the superstructure ordeck-house within the distance mentioned above shall be ofthe fixed (non-opening) type. In addition, during the use ofthe bow or stern loading and unloading arrangements, alldoors, ports and other openings on the corresponding super-structure or deck-house side shall be kept closed. Where, inthe case of small ships, compliance with 3.2.3 and this para-graph is not possible, the Register may approve relaxationsfrom the above requirements.
3.7.5 Air pipes and other openings to enclosed spacesnot listed in 3.7.4 shall be shielded from any spray whichmay come from a burst hose or connection.
3.7.6 Escape routes shall not terminate within thecoamings required in 3.7.7 or within a distance of 3 m be-yond the coamings.
3.7.7 Continuous coamings of suitable height shall befitted to keep any spills on deck and away from the accom-modation and service areas.
3.7.8 Electrical equipment within the coamings re-quired in 3.7.7 or within a distance of 3 m beyond the coam-ings shall be in accordance with the requirements of Chapter10.
3.7.9 Fire-fighting arrangements for the bow or sternloading and unloading areas shall be in accordance with11.3.16.
3.7.10 Means of communication between the cargocontrol station and the cargo shore-connection location shallbe provided and certified safe, if necessary. Provision shallbe made for the remote shutdown of cargo pumps from thecargo shore-connection location.
3.7.11 The height of the continuous coamings requiredin 3.7.7 shall be not less than 150 mm above the deck andnowhere less than 50 mm above the upper edge of the shearstrake.
3.7.12 On ships engaged in the carriage of productswith flashpoint not exceeding 60ºC the anchor windlass andopenings of chain pipes leading into the chain locker shall notbe permitted within the coamings or within a distance of 3 mbeyond the coamings required in 3.7.7.
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2009
4 CARGO CONTAINMENT
4.1 DEFINITIONS
4.1.1 Independent tank means a cargo-containmentenvelope, which is not contiguous with, or part of, the hullstructure. An independent tank is built and installed so as toeliminate whenever possible (or in any event to minimize) itsstressing as a result of stressing or motion of the adjacent hullstructure. An independent tank is not essential to the struc-tural completeness of the ship's hull.
4.1.2 Integral tank means a cargo-containment enve-lope which forms part of the ship's hull and which may bestressed in the same manner and by the same loads whichstress the contiguous hull structure and which is normally es-sential to the structural completeness of the ship's hull.
4.1.3 Gravity tank means a tank having a designpressure not greater than 0.07 MPa gauge at the top of thetank. A gravity tank may be independent or integral. A grav-ity tank shall be constructed and tested according to recog-nized standards, taking account of the temperature of carriageand relative density of the cargo.
4.1.4 Pressure tank means a tank having a designpressure greater than 0.07 MPa gauge. A pressure tank shallbe an independent tank and shall be of a configuration per-mitting the application of pressure-vessel design criteria ac-cording to recognized standards.
4.2 TANK TYPE REQUIREMENTSFOR INDIVIDUAL PRODUCTS
4.2.1 Requirements for both installation and designof tank types for individual products are shown in column fin the table of Chapter 17.
4.3 GENERAL
4.3.1 Independent cargo tanks shall be built and in-stalled so as to eliminate, whenever possible, (or in any eventto minimize) its stressing as result of stressing or motion ofthe adjacent hull structure. The reaction forces in way of tanksupports shall be transmitted as directly as possible to thehull primary supporting members, minimizing stress concen-trations.
4.3.2 The distance between independent tanks andthe distance between such tanks and parts of the hull shall besufficient to give reasonable space for inspection and mainte-nance.
4.3.3 Gravity tanks intended for carriage of productshaving vapour pressure grater than 0.07 MPa shall be pro-vided with mechanical refrigeration system to keep the va-pour pressure of the cargo below the design pressure of thecargo tank.
4.4 SCANTLING AND TESTING
Ships with inserted and permanently fitted tanks withplane walls, not forming part of the ship’s main structure.
4.4.1 For ships with inserted and permanently fittedtanks with plane walls, not forming part of the ship’s mainstructure, the requirements in Rules, Part 2 – Hull, section 1to 16 and Part 3 – Hull Equipment shall apply unless other-wise mentioned in the following. Where the tank is extendedfrom board to board a longitudinal bulkhead shall be pro-vided.
4.4.2 The scantlings of tank structure elements shallbe determined by the formulae given in Rules, Part 2 – Hull,section 11.2.
Ships with tanks independent of the shell plating formingpart of the ship’s main structure
4.4.3 For ships with tanks independent of the shellplating, which form, however, part of the ship’s main struc-ture, the requirements in Rules, Part 2 – Hull, section 18shall apply.
Thickness of solid stainless steel and clad steel plating andof lined plating
4.4.4 Where solid stainless steel plating, clad steelplating or plating lined with rubber or synthetic material isused, the thickness of plating and stiffeners determined in ac-cordance with requirements in Rules, Part 2 – Hull, section11 and/or section 18, may be reduced for the values as shownin Table 4.4.4-1.
Table 4.4.4-1
Arrangement ofcargo or water
ballast
Solid stainless steelplating or platingboth sides lined
[mm]
Steel plating oneside clad or plat-ing one side lined
[mm]
Cargo at bothsides 0.5 -
Cargo at one side,other side dry 1.0 1.0
Cargo at one side,other side waterballast
1.0 0.5
4.4.5 The suitability of the use of stainless steel andrubber or synthetic material lining shall be proved to theRegister unless already verified in service. See also 6.7.
4.4.6 Gravity tanks shall be tested in accordance withthe requirements given in Rules, Part 2 – Hull, 18.1. Allcargo tanks bulkheads shall be water tested from at least oneside.
4.4.7 For the details of dimensioning and testing ofthe pressure tanks the requirements in Rules, Part 10 – Boil-ers, Heat Exchangers and Pressure Vessels, Section 6, shallapply.
RULES FOR THE CLASSIFICATION OF SHIPS 17PART 27
2009
5 CARGO TRANSFER
5.1 PIPING SCANTLINGS
5.1.1 Subject to the conditions stated in 5.1.4 the wallthickness (t) of pipes shall be not less than:
,
1001 a
cbtt o
−
++= [mm]
where:to = theoretical thickness
to = PD/(2Ke+P), [mm]
withP = design pressure, [MPa] referred to in
5.1.2D = outside diameter, [mm]K = allowable stress, [N/mm2] referred to in
5.1.5e = efficiency factor equal to 1.0 for seam-
less pipes and for longitudinally or spi-rally welded pipes, delivered by ap-proved manufacturers of welded pipes,which are considered equivalent toseamless pipes when non-destructivetesting on welds is carried out in accor-dance with recognized standards. Inother cases, an efficiency factor of lessthan 1.0, in accordance with recognizedstandards, may be required dependingon the manufacturing process.
b = allowance for bending, [mm]. Thevalue of b shall be chosen so that thecalculated stress in the bend, due to in-ternal pressure only, does not exceedthe allowable stress. Where such justi-fication is not given, b shall be not lessthan:
,5.2 r
tDb o= [mm]
withr = mean radius of the bend, [mm]c = corrosion allowance (mm). If corrosion
or erosion is expected, the wall thick-ness of piping shall be increased overthat required by the other design re-quirements.
a = negative manufacturing tolerance forthickness, (%).
5.1.2 The design pressure P in the formula for to in5.1.1 is the maximum gauge pressure to which the systemmay be subjected in service, taking into account the highestset pressure on any relief valve on the system.
5.1.3 Piping and piping-system components whichare not protected by a relief valve, or which may be isolatedfrom their relief valve, shall be designed for at least thegreatest of:
.1 for piping systems or components, whichmay contain some liquid, the saturatedvapour pressure at 45°C;
.2 the pressure setting of the associatedpump discharge relief valve;
.3 the maximum possible total pressure headat the outlet of the associated pumpswhen a pump discharge relief valve is notinstalled.
5.1.4 The design pressure shall not be less than1 MPa gauge except for open-ended lines, where it shall benot less than 0.5 MPa gauge.
5.1.5 For pipes, the allowable stress K to be consid-ered in the formula for to in 5.1.1 is the lower of the follow-ing values:
BRor
ARm e
where:Rm = specified minimum tensile strength at
ambient temperature, [N/mm2]Re = specified minimum yield stress at
ambient temperature, [N/mm2]. If thestress-strain curve does not show adefined yield stress, the 0.2% proofstress applies.
A and B shall have values of at least A = 2.7 andB = 1.8.
5.1.6 The minimum wall thickness shall be in accor-dance with recognized standards.
5.1.7 Where necessary for mechanical strength toprevent damage, collapse, excessive sag or buckling of pipesdue to weight of pipes and content and to superimposed loadsfrom supports, ship deflection or other causes, the wall thick-ness shall be increased over that required by 5.1.1 or, if this isimpracticable or would cause excessive local stresses, theseloads shall be reduced, protected against or eliminated byother design methods.
5.1.8 Flanges, valves and other fittings shall be in ac-cordance with recognized standards, taking into account thedesign pressure defined under 5.1.2.
5.1.9 For flanges not complying with a standard, thedimensions for flanges and associated bolts shall be to thesatisfaction of the Register.
5.1.10 Unless otherwise stated in this chapter, cargopipes, cargo piping and associated accessories shall be incompliance with the requirements specified in Rules, Part 8 –Piping, Chapter 1.
5.1.11 For the purpose of this Part of the Rules and inaccordance with Rules, Part 8 – Piping, 1.2 cargo pipes,cargo piping and associated accessories shall be consideredas:
.1 class I when the design pressure is above1.5 MPa, or the pipe is intended for toxicsubstances;
.2 class II when the design pressure is equalto or less than 1.5 Mpa;
.3 class III when they are open ended orplaced inside cargo tanks.
18 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
5.1.12 For piping subjected to green seas, the designpressure P, in MPa, in the formula in 5.1.1 shall be replacedby an equivalent pressure P’ given by the following formula:
⋅++=
DDKRPPP C006,0
21' 2 , [MPa]
where:DC - external diameter of the pipe taking into
account the thickness insulation, in [mm],whose shall be taken at least equal to:40 mm if D < 50 mm;80 mm if D > 150 mm.Intermediate values shall determined byinterpolation.
R’ - Drag corresponding to the effect of greenseas, [N/mm2], such as given in Table5.1.6.7-1 as a function of the location ofthe pipes and of their height H, [m],above the deepest loadline. Intermediatevalues shall be determined by interpola-tion.
Table 5.1.6.7-1
Aft of the quarter of theship’s length
Forward of the quarterof the ship’s length
Externaldiameterof pipe
(1) H ≤ 8 H = 13 H ≥ 18 H ≤ 8 H = 13 H ≥ 18
≤ 25 1500 250 150 2200 350 150
50 1400 250 150 2000 350 150
75 1100 250 150 1600 350 150
100 700 250 150 700 350 150
≥ 150 500 250 150 700 350 150
(1) Dc, if the pipe is insulated, otherwise D.
5.1.13 The value for c (added corrosion thickness) forthe formula in 5.1.1 shall normally be equal to at least 3 mm.The Register may accept a lesser value for pipes made ofaustenitic or austenitic-ferritic stainless steel, pipes with in-ternal lining or, if applicable, pipes with acceptable externalprotective lining or painting.
5.2 PIPING FABRICATION ANDJOINING DETAILS
5.2.1 The requirements of this section apply to pipinginside and outside the cargo tanks. However, relaxations fromthese requirements may be accepted in accordance with rec-ognized standards for open-ended piping and for piping in-side cargo tanks except for cargo piping serving other cargotanks.
5.2.2 Cargo piping shall be joined by welding except:.1 for approved connections to shut-off
valves and expansion joints; and.2 for other exceptional cases specifically
approved by the Administration.
5.2.3 The following direct connections of pipelengths without flanges may be considered:
.1 Butt-welded joints with complete pene-tration at the root may be used in all ap-plications.
.2 Slip-on welded joints with sleeves andrelated welding having dimensions in ac-cordance with recognized standards shallonly be used for pipes with an externaldiameter of 50 mm or less. This type ofjoint shall not be used when crevice cor-rosion is expected to occur.
.3 Screwed connections, in accordance withrecognized standards, shall only be usedfor accessory lines and instrumentationlines with external diameters of 25 mm orless.
5.2.4 Expansion of piping shall normally be allowedfor by the provision of expansion loops or bends in the pipingsystem.
.1 Bellows, in accordance with recognizedstandards, may be specially considered.
.2 Slip joints shall not be used.
5.2.5 Welding, post-weld heat treatment and non-destructive testing shall be performed in accordance withrecognized standards.
5.2.6 Cargo piping shall be welded except for neces-sary flanged connections to valves, expansion joints as per-mitted in 5.2.2.1, spool pieces and similar fittings or whererequired for coating, lining, fabrication, inspection or mainte-nance.
5.2.7 The use of bellows shall not be permitted forcorrosive and polymerising products, except if provision ismade to prevent stagnation of liquids, such as cargo drainstrapped in the corrugated parts of the joints.
5.3 FLANGE CONNECTIONS
5.3.1 Flanges shall be of the welded-neck, slip-on orsocket-welded type. However, socket-welded-type flangesshall not be used in nominal size above 50 mm.
5.3.2 Flanges shall comply with recognized standardsas to their type, manufacture and test.
5.4 TEST REQUIREMENTS FORPIPING
5.4.1 The test requirements of this section shall applyto piping inside and outside cargo tanks. However, relaxa-tions from these requirements may be accepted in accordancewith recognized standards for piping inside tanks and open-ended piping.
5.4.2 After assembly, each cargo piping system shallbe subject to a hydrostatic test to at least 1.5 times the designpressure. When piping systems or parts of systems are com-pletely manufactured and equipped with all fittings, the hy-drostatic test may be conducted prior to installation aboardthe ship. Joints welded on board shall be hydrostaticallytested to at least 1.5 times the design pressure.
RULES FOR THE CLASSIFICATION OF SHIPS 19PART 27
2009
5.4.3 After assembly on board, each cargo pipingsystem shall be tested for leaks to a pressure depending onthe method applied.
5.4.4 With regard to the non-destruction testing ofwelded pipes and accessories the following shall apply:
.1 Butt welded pipes and accessories shallbe X-rayed at random and entirelychecked by means of a dye-penetrant testor an equivalent method.
.2 X-rays shall cover at least 10% of theconnections and may be extended, at therequest of the Register depending on theresults of the inspection.
.3 Relaxation of the above requirementsmay be considered by the Register on acase-by-case basis for pipes welded atworkshops. However, this only applies toships exclusively intended to carry car-goes with minor fire risk.
5.5 PIPING ARRANGEMENTS
5.5.1 Cargo piping shall not be installed under deckbetween the out-board side of the cargo-containment spacesand the skin of the ship unless clearances required for dam-age protection (see 2.6) are maintained; but such distancesmay be reduced where damage to the pipe would not causerelease of cargo provided that the clearance required for in-spection purposes is maintained.
5.5.2 Cargo piping located below the main deck mayrun from the tank it serves and penetrate tank bulkheads orboundaries common to longitudinally or transversally adja-cent cargo tanks, ballast tanks, empty tanks, pump-rooms orcargo pump-rooms provided that inside the tank it serves it isfitted with a stop valve operable from the weather deck andprovided cargo compatibility is assured in the event of pipingfailure. As an exception, where a cargo tank is adjacent to acargo pump-room, the stop valve operable from the weatherdeck may be situated on the tank bulkhead on the cargopump-room side, provided an additional valve is fitted be-tween the bulkhead valve and the cargo pump. A totally en-closed hydraulically operated valve located outside the cargotank may, however, be accepted, provided that the valve is:
.1 designed to preclude the risk of leakage;
.2 fitted on the bulkhead of the cargo tankwhich it serves;
.3 suitably protected against mechanicaldamage;
.4 fitted at a distance from the shell as re-quired for damage protection (see 2.6);and
.5 operable from the weather deck.
5.5.3 In any cargo pump-room where a pump servesmore than one tank, a stop valve shall be fitted in the line toeach tank.
5.5.4 Cargo piping installed in pipe tunnels shall alsocomply with the requirements of 5.5.1 and 5.5.2. Pipe tunnelsshall satisfy all tank requirements for construction, locationand ventilation and electrical hazard requirements. Cargocompatibility shall be assured in the event of a piping failure.The tunnel shall not have any other openings except to the
weather deck and cargo pump-room or pump-room (see3.4.7).
5.5.5 Cargo piping passing through bulkheads shallbe so arranged as to preclude excessive stresses at the bulk-head and shall not utilize flanges bolted through the bulk-head.
5.5.6 The intent of the requirement in 5.5.2 is to pre-clude the hazard of cargo leaking pass a shut-off valve glandinto the space where the valve is located.
5.5.7 The ends of cargo tank filling pipes shall be lo-cated as near as possible to the tank bottom in order to reducethe risk of generating static electricity.
5.5.8 Shields shall be provided on flange connectionsto prevent the projection of liquids in case of leakage if pipesare intended to carry cargoes involving serious risks of skintoxicity.
5.5.9 In chemical tankers intended for the transportof products having a flash point not exceeding 60°C alumin-ised pipes may be permitted in ballast tanks, in inerted cargotanks and, provided the pipes are protected from accidentalimpact, in hazardous areas on open deck.
5.5.10 Pumps, piping and associated fittings shall con-stitute a permanently fitted system; in general, removableparts shall not be allowed, except for specific cases for whichit can be proved, to the satisfaction of the Register, that no ef-fective alternative solutions are available. In such circum-stances, the safety measures deemed necessary will be con-sidered by the Register on a case-by-case basis.
5.6 CARGO-TRANSFER CONTROLSYSTEMS
5.6.1 For the purpose of adequately controlling thecargo, cargo-transfer systems shall be provided with:
.1 one stop valve capable of being manuallyoperated on each tank filling and dis-charge line, located near the tank pene-tration; if an individual deepwell pump isused to discharge the contents of a cargotank, a stop valve is not required on thedischarge line of that tank;
.2 one stop valve at each cargo-hose con-nection;
.3 remote shutdown devices for all cargopumps and similar equipment.
5.6.2 The controls necessary during transfer or trans-port of cargoes covered by this Part of the Rules other than incargo pump-rooms which have been dealt with elsewhere inthis Part shall not be located below the weather deck.
5.6.3 For certain products, additional cargo-transfercontrol requirements are shown in column o in the table ofChapter 17.
5.6.4 The stop valve required in 5.6.1.1 may beomitted for cargo pipes in cargo tanks fitted with stop valvelocated near the open end and operable from the weatherdeck (see 5.5.2).
20 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
5.6.5 One blank flange shall be provided in additionto the stop valve required in 5.6.1.2 at each cargo hose con-nection.
5.6.6 The stop valve required in 5.6.1.2 shall be pro-vided also for the hose connection used for the transfer ofcargo vapour.
5.6.7 The cargo pumps control shall be fitted in a po-sition which is readily accessible, even in the event that thecargo piping or hoses break. This position shall be clearly in-dicated.
5.6.8 Where a cargo control room is provided, thefollowing controls, monitoring and alarms shall be connectedto this room:
.1 cargo pump control;
.2 control of loading/unloading valves;
.3 level gauges;
.4 temperature indicators;
.5 high level alarms,
.6 very high level alarms;
.7 high/low temperature alarms;
.8 high/low pressure alarms;
.9 fixed gas detecting system alarms.In general, high/low temperature alarms shall
also be transduced to the navigating bridge.
5.6.9 The cargo control room shall be located abovethe weather deck and may be considered as a dangerousspace or a safe space, depending on its location and on thepossible presence of a product or of its vapours. If it is con-sidered a dangerous space, it shall be provided with a venti-lation system capable of supplying at least 20 air changes perhour; it shall not be located in the accommodation area andonly safe type electrical equipment shall be allowed.
5.6.10 A cargo control room without cargo pump andvalve control is defined as a “cargo control station”.
5.7 SHIP’S CARGO HOSES
5.7.1 Liquid and vapour hoses used for cargo transfershall be compatible with the cargo and suitable for the cargotemperature.
5.7.2 Hoses subject to tank pressure or the dischargepressure of pumps shall be designed for a bursting pressurenot less than 5 times the maximum pressure the hose will besubjected to during cargo transfer.
5.7.3 For cargo hoses installed on board ships on orafter 1 July 2002, each new type of cargo hose, completewith end-fittings, shall be prototype-tested at a normal ambi-ent temperature with 200 pressure cycles from zero to at leasttwice the specified maximum working pressure. After thiscycle pressure test has been carried out, the prototype testshall demonstrate a bursting pressure of at least 5 times itsspecified maximum working pressure at the extreme servicetemperature. Hoses used for prototype testing shall not beused for cargo service. Thereafter, before being placed inservice, each new length of cargo hose produced shall be hy-drostatically tested at ambient temperature to a pressure notless than 1.5 times its specified maximum working pressurebut not more than two-fifths of its bursting pressure. Thehose shall be stencilled or otherwise marked with the date of
testing, its specified maximum working pressure and, if usedin services other than the ambient temperature services, itsmaximum and minimum service temperature, as applicable.The specified maximum working pressure shall not be lessthan 1 MPa gauge.
Cargo hoses shall be marked with the name ofproduct for which the hose is intended, where applicable.
5.7.4 The requirements in 5.7.1 applies to cargohoses carried on board the vessel and “compatibility with thecargo” means that:
.1 the cargo hose does not lose its mechani-cal strength or deteriorate unduly when incontact with the cargo; and
.2 the cargo hose material does not affectthe cargo in a hazardous way.
Consideration shall be given to internal andexternal surfaces with respect to the above where hoses maybe used as an integral part of, or connected to, emergencycargo pumps and submerged in the cargo tank.
5.8 PROTECTION AGAINST ANINCENTIVE DISCHARGE OF STATIC
ELECTRICITY
5.8.1 For the requirements regarding protection ofpiping systems and equipment against an incentive dischargeof static electricity see Chapter 10.
5.9 CERTIFICATION, INSPECTIONAND TESTING
5.9.1 The requirements in this section for the certifi-cation, inspection and testing are related to cargo piping andother equipment fitted in the cargo area. These requirementssupplement the requirements given in Rules, Part 8 – Piping,for piping systems.
5.9.2 Where required in Table 5.9.9-1, materials usedfor pipes, valves and fittings shall be subjected to the testspecified in Rules, Part 8 – Piping, 1.3.
5.9.3 Where required in Table 5.9.9-1, welded jointsshall be subjected to the examinations specified in 5.4.4 andexaminations specified in Rules, Part 8 – Piping, 1.3, forclass I and class II pipes, as applicable.
5.9.4 Where required in Table 5.9.9-1, cargo pipesvalves, fittings and pump casings shall be subjected to hydro-static tests in accordance with the relevant requirements inRules, Part 8 – Piping, 16.1 and 16.2.
5.9.5 Each expansion joint shall be subjected to hy-drostatic test under a pressure of not less than twice maxi-mum service pressure, and in any case not less than 1 MPa.
During the test expansion joint shall be repeat-edly deformed from its geometrical axis.
5.9.6 For testing of ship’s cargo hoses see 5.7.
5.9.7 Where fitted, bellow pieces of gas-tight pene-tration seals shall be pressure tested.
RULES FOR THE CLASSIFICATION OF SHIPS 21PART 27
2009
5.9.8 Tightness of the gas-tight penetration seal shallbe checked. This test may be carried in the workshop or onboard.
5.9.9 Inspection and tests required for cargo pipingand other equipment fitted in the cargo area are summarisedin Table 5.9.9-1.
5.9.10 After installation on board, the cargo pipingsystem shall be checked for leakage under operational condi-tions (see 5.4.3).
Table 5.9.9-1Inspection and testing at works
Tests for materials Inspections and tests for the products
No Item Y/N(1)
Type of materialcertificate
(2)
duringmanufacturing
(1)
aftercompletion
(1) (3)
Type of productcertificate
(2)
References to theRules
1 seamless or stainless steelcargo pipes Y • C where ND>25mm
• W where ND<25mm Y (4) Y C 1.3, Part 8 andPart 25
2 pipes of class II, cargovalves and fittings Y • C where ND>25mm
• W where ND<100mm Y (4) Y C 1.3 and 1.4, Part 8,Part 25 and Part 26
3 expansion joints andcargo hoses Y (5) W N Y C 1.4, Part 8 and
Part 24
4 cargo pumps Y C Y (6) Y C1.9, Part 8,Part 25 and Part 26,see note (6)
5 gastight penetration seals N - N Y C 1.3, Part 8
6 cargo tank P/V-valves Y C Y Y C 1.3, 5.1 and 5.2,Part 8
7 flame arresters N - N Y C 5.2, Part 8,see note (3)
(1) Y = required, N = not required.(2) C = class certificate, W = works' certificate.(3) includes the checking of the rule characteristics according to the drawings approved by the Register.(4) only in the case of welded construction.(5) if metallic.(6) inspection during manufacturing shall be carried out according to a program approved by the Register.
22 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
6 MATERIALS OFCONSTRUCTION, PROTECTIVE
LININGS AND COATINGS
6.1 GENERAL
6.1.1 Structural materials used for tank construction,together with associated piping, pumps, valves, vents and theirjointing materials, shall be suitable at the temperature andpressure for the cargo to be carried in accordance with recog-nized standards (see Rules, Part 25 – Metallic Materials).Steel is assumed to be the normal material of construction.
6.1.2 The shipyard is responsible for providing com-patibility information to the ship operator and/or master. Thismust be done in a timely manner before delivery of the ship oron completion of a relevant modification of the material ofconstruction.
6.1.3 Where applicable, the following shall be takeninto account in selecting the material of construction:
.1 notch ductility at the operating tempera-ture;
.2 corrosive effect of the cargo; and
.3 possibility of hazardous reactions betweenthe cargo and the material of construction.
6.1.4 The shipper of the cargo is responsible for pro-viding compatibility information to the ship operator and/ormaster. This must be done in a timely manner before trans-portation of the product. The cargo shall be compatible withall materials of construction such that:
.1 no damage to the integrity of the materialsof construction is incurred; and/or
.2 no hazardous, or potentially hazardous re-action is created.
6.1.5 When a product is submitted to IMO for evalua-tion, and where compatibility of the product with materials re-ferred to in paragraph 6.1 renders special requirements, theBLG Product Data Reporting form shall provide informationon the required materials of construction. These requirementsshall be reflected in Chapter 15 and consequentially be re-ferred to in column o of Chapter 17. The reporting form shallalso indicate if no special requirements are necessary. Theproducer of the product is responsible for providing the correctinformation.
6.1.6 Selection of materials and coating systemscoming into contact with cargo liquid or vapour is the respon-sibility of the shipyard and/or owner. It shall be based on thelist of cargoes to be carried and shall take into account thesuitability and resistance data supplied and guarantied by thematerial or coating manufactures.
6.1.7 The requirements for selecting the material in6.3.2 and .3 need not apply to cargo pump room casings andequipment and fittings, excluding electrical installations,which are considered to come in contact solely with vapoursemitted from cargo pump room bilges. However, the require-ments apply to the cargo pump room bottom plating and cas-ing to a suitable height from the bottom plating which are con-
sidered to come in contact with the cargo. For electrical in-stallations the requirements in 10.1 shall apply.
6.1.8 In addition to the requirements in 6.1.3.2 and .3materials of constructions having a melting point below925°C, e.g. aluminium and its alloys, shall not be used for ex-ternal piping involved in cargo handling operations on shipsintended for the carriage of products with flashpoints not ex-ceeding 60°C. Short lengths of external pipes connected tocargo tanks may be permitted if they are provided with fire-resistant insulation.
6.1.9 The fixed tank cleaning equipment installedwithin cargo tanks shall comply with the requirements in6.1.3.2 and .3.
6.1.10 Where chlorides are included in the list of car-goes the molybdenum content of stainless steel shall not beless than 2.5%.
Where seawater is intended to be carried instainless steel tanks for an extended period the pitting resis-tance equivalent:
W = % Cr + 3.3 % Moshall be not less than 30.
6.1.11 The use of aluminium coating is prohibited inthe cargo tanks, cargo tank deck area, cargo pump-rooms,pump rooms, cofferdams or any other area where cargo va-pours may accumulate.
RULES FOR THE CLASSIFICATION OF SHIPS 23PART 27
2009
7 CARGO TEMPERATURECONTROL
7.1 GENERAL
7.1.1 When provided, any cargo heating or coolingsystems shall be constructed, fitted and tested to the satisfac-tion of the Register. Materials used in the construction of tem-perature-control systems shall be suitable for use with theproduct intended to be carried.
7.1.2 Heating or cooling media shall be of a type ap-proved for use with the specific cargo. Consideration shall begiven to the surface temperature of heating coils or ducts toavoid dangerous reactions from localized overheating or over-cooling of cargo (see also 15.13.6.).
7.1.3 Heating or cooling systems shall be providedwith valves to isolate the system for each tank and to allowmanual regulation of flow.
7.1.4 In any heating or cooling system, means shall beprovided to ensure that, when in any condition other thanempty, a higher pressure can be maintained within the systemthan the maximum pressure head that could be exerted by thecargo tank contents on the system.
7.1.5 Means shall be provided for measuring the cargotemperature.
.1 The means for measuring the cargo tem-perature shall be of restricted or closedtype, respectively, when a restricted orclosed gauging device is required for indi-vidual substances, as shown in column j inthe table of Chapter 17.
.2 A restricted temperature-measuring deviceis subject to the definition for a restrictedgauging device in 13.1.1.2 (e.g. a portablethermometer lowered inside a gauge tubeof the restricted type).
.3 A closed temperature-measuring device issubject to the definition for a closedgauging device in 13.1.1.3 (e.g. a remote-reading thermometer of which the sensoris installed in the tank).
.4 When overheating or overcooling couldresult in a dangerous condition, an alarmsystem which monitors the cargo tem-perature shall be provided (see also opera-tional requirements in 16.6).
7.1.6 When products for which 15.12, 15.12.1 or15.12.3 are listed in column o in the table of Chapter 17 arebeing heated or cooled, the heating or cooling medium shalloperate in a circuit:
.1 which is independent of other ship's serv-ices, except for another cargo heating orcooling system, and which does not enterthe machinery space; or
.2 which is external to the tank carrying toxicproducts;
.3 where the medium is sampled to check forthe presence of cargo before it is recircu-lated to other services of the ship or into
the machinery space. The samplingequipment shall be located within thecargo area and be capable of detecting thepresence of any toxic cargo being heatedor cooled. Where this method is used, thecoil return shall be tested not only at thecommencement of heating or cooling of atoxic product, but also on the first occasionthe coil is used subsequent to having car-ried an unheated or uncooled toxic cargo.
7.1.7 The capacity of a ship to maintain specific car-goes under heated conditions is the responsibility of the ship-yard and/or the owner.
7.1.8 Except for ships intended for restricted voyages,any cargo with a melting point equal to 20°C, or above, shallbe capable of being maintained under heated conditions.
Attention is drawn to the fact that, for safety rea-sons, certain cargoes shall not be heated above a specific tem-perature (see 7.1.18).
7.1.9 When a ship is fitted with a heating system ca-pable of maintaining the liquid temperature above 45°C, theship’s structure and materials shall be checked for this tem-perature and the maximum permissible temperature shall bestated on the ship’s certificate.
7.1.10 Wherever a particular temperature (higher orlower than the ambient temperature) is required to be main-tained for the preservation of the cargo, one of the followingsystems shall be adopted:
.1 thermally insulated tanks capable ofmaintaining the temperature of the cargowithin acceptable limits for the time of thevoyage;
.2 a heating or cooling plant or refrigeratingplant;
.3 a combination of .1 and .2 above.
7.1.11 No heating/cooling media shall be used whichreacts in a hazardous manner with cargo. Manifolds for thedelivery and backflow of heating/cooling media shall be fittedon the weather deck; connections to cargo tanks for inlet andoutlet shall be in way of the cargo tank top.
7.1.12 Where the heat exchanger room is located in theaccommodation area and considered as gas-safe, it shall betreated as a machinery space (other than a category A) andprovided with independent mechanical extraction ventilationas well as with scuppers discharging directly into the machin-ery space.
7.1.13 Wherever the cargo temperature is maintainedby a heating or refrigerating plant, unless otherwise indicatedin the contract specification, the system shall be designedtaking into account the reference temperatures indicated inTable 7.1.13-1.
Table 7.1.13-1
Reference temperature, [°C]
Sea 0 32
Air 5 45
24 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
7.1.14 Wherever the heating or cooling system is es-sential for the preservation of the cargo, the following compo-nents shall be duplicated:
.1 coils and ducts in cargo tanks;
.2 heating or cooling sources;
.3 circulating pumps for cargo and heat-ing/cooling medium; if suitable for the use,cargo pumps may be employed for the cir-culation of the heating or cooling medium;
.4 refrigeration plant.
7.1.15 Depending on the electrical apparatus class tem-perature required for the cargoes being carried, the maximumsurface temperature of the heating system, within enclosedspaces inside the cargo area shall not exceed the values indi-cated in Table 7.1.15-1.
Table 7.1.15-1
Class tempera-ture
Maximum surface temperature ofthe heating system
T1 450°C
T2 300°C
T3 200°C
T4 135°C
T5 100°C
T6 85°C
7.1.16 Cargo heating or cooling systems shall be fittedwith the necessary connections to purge, by inert gas or com-pressed air, the heating or cooling circuit of each cargo tankand to perform the pressure testing of the system.
7.1.17 For water reactive products (see 15.16) spoolpieces shall be provided in addition to the valves required in7.1.3.
7.1.18 The alarm system required in 7.1.5.4 shall beprovided:
.1 for those products which are carried in aheated condition (see 15.13.7) and forwhich, in column o of the table in Chapter17 reference is made to the requirements in15.13;
.2 for products mentioned in .1 above, in acase where adjacent cargo tanks or fuel oiltanks are heated or cooled to the extentthat overheating or overcooling could re-sult in a dangerous conditions;
.3 for those products for which a carryingtemperature not greater than certain limitsis required by Chapter 15 such as elemen-tary phosphorus and molten sulphur; and
.4 giving a visual and audible alarm signal onthe navigating bridge and in the cargocontrol station, if fitted.
7.1.19 The temperature sensing ends of alarm systemshall be provided at no less than two locations, on the liquidsurface and on the bottom of the tank.
7.1.20 If the sampling equipment mentioned in 7.1.6.3consists of an observation tank for drains, this tank shall com-ply with the following requirements:
.1 it shall be located in the cargo area andprovided with an air pipe with the end fit-ted with a flame screen and arranged at notless than 3 m from openings of accommo-dation spaces and from sources of ignition;and
.2 it shall be fitted with a connection for dis-charge into the slop tanks with associatedshut-off valves and sight glass and quippedwith a sampling cock for backflowing me-dium analysis.
7.2 ADDITIONAL REQUIREMENTS
7.2.1 For certain products, additional requirementscontained in Chapter 15 are shown in column o in the table ofChapter 17.
RULES FOR THE CLASSIFICATION OF SHIPS 25PART 27
2009
8 CARGO TANK VENTINGAND GAS-FREEINGARRANGEMENTS
8.1 APPLICATION
8.1.1 Unless expressly provided otherwise, this chap-ter applies to ships constructed on or after 1 January 1994.
8.1.2 Ships constructed before 1 January 1994 shallcomply with the requirements of this Part of the Rules whichwere in force prior to the said date.
8.1.3 For the purpose of this regulation, the term “shipconstructed“ is as defined in Rules, Part 1 – General Re-quirements, Chapter 1 / 2.25.
8.1.4 Ships constructed on or after 1 July 1986 but be-fore 1 January 1994 which fully comply with the requirementsof this Part of the Rules applicable at that time may be re-garded as complying with the requirements for cargo tanksventing, purging and gas-freeing (see Rules, Part 8 – Piping,5.2) and with the requirements for ventilation and gas meas-urement of double hull and double bottom spaces and portableinstruments (see Rules, Part 17 – Fire Protection, 2.4.8 andTable 5.1.2-1 item 15).
8.1.5 For ships to which this Part of the Rules applies,the requirements of this chapter shall apply in lieu of the re-quirements specified in, Rules, Part 8 – Piping, 5.2.
8.1.6 Ships constructed on or after 1 July 1986, butbefore 1 July 2002 shall comply with the requirements of8.3.3.
8.2 CARGO TANK VENTING
8.2.1 All cargo tanks shall be provided with a ventingsystem appropriate to the cargo being carried and these sys-tems shall be independent of the air pipes and venting systemsof all other compartments of the ship. Tank venting systemsshall be designed so as to minimize the possibility of cargovapour accumulating about the decks, entering accommoda-tion, service and machinery spaces and control stations and, inthe case of flammable vapours, entering or collecting in spacesor areas containing sources of ignition. Tank venting systemsshall be arranged to prevent entrance of water into the cargotanks and, at the same time, vent outlets shall direct the vapourdischarge upwards in the form of unimpeded jets.
8.2.2 The venting systems shall be connected to thetop of each cargo tank and as far as practicable the cargo ventlines shall be self-draining back to the cargo tanks under allnormal operational conditions of list and trim. Where it is nec-essary to drain venting systems above the level of any pres-sure/vacuum valve, capped or plugged drain cocks shall beprovided.
8.2.3 Provision shall be made to ensure that the liquidhead in any tank does not exceed the design head of the tank.Suitable high-level alarms, overflow control systems or spillvalves, together with gauging and tank filling procedures, maybe accepted for this purpose. Where the means of limiting
cargo tank overpressure includes an automatic closing valve,the valve shall comply with the appropriate provisions of15.19.
8.2.4 Tank venting systems shall be designed and op-erated so as to ensure that neither pressure nor vacuum createdin the cargo tanks during loading or unloading exceeds tankdesign parameters. The main factors to be considered in thesizing of a tank venting system are as follows:
.1 design loading and unloading rate;.
.2 gas evolution during loading: this shall betaken account of by multiplying the maximumloading rate by a factor of at least 1.25;
.3 density of the cargo vapour mixture;
.4 pressure loss in vent piping and across valvesand fittings; and
.5 pressure/vacuum settings of relief devices.
8.2.5 Tank vent piping connected to cargo tanks ofcorrosion-resistant material, or to tanks which are lined orcoated to handle special cargoes as required by this Part of theRules, shall be similarly lined or coated or constructed of cor-rosion-resistant material.
8.2.6 The master shall be provided with the maximumpermissible loading and unloading rates for each tank or groupof tanks consistent with the design of the venting systems.
8.2.7 Self-draining back to the cargo tanks shall be bynatural gravity.
When large amounts of drainage from vent linesis envisaged, provision for a hose connection to a drain linedraining to a suitable slop tank shall be provided.
8.2.8 The system which protects against the liquidlevel exceeding the design head of the cargo tank, referred toin 8.2.3, shall be independent of the cargo tank gauging de-vices.
8.2.9 When designing cargo tank venting arrange-ments revised factors contained in MSC/Circ.731 shall betaken into consideration.
8.2.10 High level alarms and overflow control systemsspecified in 8.2.3 shall be type approved by the Register.
8.3 TYPES OF TANK VENTINGSYSTEM
8.3.1 An open tank venting system is a system whichoffers no restriction except for friction losses to the free flowof cargo vapours to and from the cargo tanks during normaloperations. An open venting system may consist of individualvents from each tank, or such individual vents may be com-bined into a common header or headers, with due regard tocargo segregation. In no case shall shutoff valves be fitted ei-ther to the individual vents or to the header.
8.3.2 A controlled tank venting system is a system inwhich pressure- and vacuum-relief valves or pressure/vacuumvalves are fitted to each tank to limit the pressure or vacuumin the tank. A controlled venting system may consist of indi-vidual vents from each tank or such individual vents on thepressure side only as may be combined into a common headeror headers, with due regard to cargo segregation. In no caseshall shut-off valves be fitted either above or below pressure-or vacuum-relief valves or pressure /vacuum valves. Provision
26 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
may be made for bypassing a pressure- or vacuum-relief valveor pressure/vacuum valve under certain operating conditionsprovided that the requirement of 8.3.6 is maintained and thatthere is suitable indication to show whether or not the valve isbypassed.
8.3.3 Controlled tank venting systems shall consist ofa primary and a secondary means of allowing full flow reliefof vapour to prevent over-pressure or under-pressure in theevent of failure of one means. Alternatively, the secondarymeans may consist of pressure sensors fitted in each tank witha monitoring system in the ship's cargo control room or posi-tion from which cargo operations are normally carried out.Such monitoring equipment shall also provide an alarm facil-ity which is activated by detection of over-pressure or under-pressure conditions within a tank.
8.3.4 The position of vent outlets of a controlled tankventing system shall be arranged:
.1 at a height of not less than 6 m above theweather deck or above a raised walkway iffitted within 4 m of the raised walkway;and
.2 at a distance of at least 10 m measuredhorizontally from the nearest air intake oropening to accommodation, service andmachinery spaces and ignition sources.
8.3.5 The vent outlet height referred to in 8.3.4.1 maybe reduced to 3 m above the deck or a raised walkway, as ap-plicable, provided that high-velocity venting valves of an ap-proved type, directing the vapour/air mixture upwards in anunimpeded jet with an exit velocity of at least 30 m/s, are fit-ted.
8.3.6 Controlled tank venting systems fitted to tanksto be used for cargoes having a flashpoint not exceeding 60°C(closed-cup test) shall be provided with devices to prevent thepassage of flame into the cargo tanks. The design, testing andlocating of the devices shall comply with the requirements ofthe Register, which shall contain at least the standards adoptedby the Organization.
8.3.7 In designing venting systems and in the selectionof devices to prevent the passage of flame for incorporationinto the tank venting system, due attention shall be paid to thepossibility of the blockage of these systems and fittings by, forexample, the freezing of cargo vapour, polymer build-up, at-mospheric dust or icing up in adverse weather conditions. Inthis context it shall be noted that flame arresters and flamescreens are more susceptible to blockage. Provisions shall bemade such that the system and fittings may be inspected, op-erationally checked, cleaned or renewed as applicable.
8.3.8 Reference in 8.3.1 and 8.3.2 to the use of shutoffvalves in the venting lines shall be interpreted to extend to allother means of stoppage, including spectacle blanks and blankflanges.
8.3.9 The term “with due regard to cargo segregation”referred to in 8.3.1 for open tank venting system means the de-sign that restricts the ingress of the cargo of a cargo tank intoother cargo tanks through vent lines even at times of heavyweather as given in Figure 8.3.9-1. In consideration of possi-ble degrading of product quality due to coming to contact withdifferent dangerous chemicals or their vapours, however, the
open type venting system shall be of independent design as faras practicable.
Figure 8.3.9-1Cargo segregation in open tank venting system
8.3.10 In case where the controlled venting systems ofthe cargo tanks carrying the cargoes different from each other,except those which react in a dangerous manner, or the samecargoes are led to a common pipe header, the pressure reliefvalves and vacuum regulating valves shall be separate fromeach other, and any other arrangement than that given in Fig-ure 8.3.10-1 is unacceptable. Vacuum regulating valves maybe of the arrangement either 1 or 2.
Figure 8.3.10-1Acceptable arrangements for the combined controlled tank
venting system
8.3.11 When pressure/vacuum valves, i.e. valves whosepressure side and vacuum side are led to the common pipe, areused for the controlled venting system of the cargo tanks in-tended to carry cargoes different from each other, any ar-rangement other than the venting system independent for eachtank or group of tanks, as applicable, is unacceptable.
8.3.12 As the countermeasures against the blockage by“freezing of cargo vapour or icing up in adverse weather con-ditions” referred to in 8.3.7, ships operated in cold zone shallbe provided with heating systems, etc. for the preventionthereof. In ships not provided with special heating systems,proper maintenance and inspection work procedures shall beestablished.
8.3.13 For a tank equipped with closed or restrictedgauging, the venting system shall be sized allowing for flamescreens, if fitted, to permit loading at the design rate withoutoverpressurizing the tank. Specifically, under conditions inwhich a saturated cargo vapour is discharged through theventing system at the maximum anticipated loading rate, thepressure differential between the cargo tank vapour space and
RULES FOR THE CLASSIFICATION OF SHIPS 27PART 27
2009
the atmosphere shall not exceed 0.02 MPa or, for independentcargo tanks, the maximum working pressure of the tank.
8.3.14 Vent outlets of cargo tanks intended for the car-riage of flammable or toxic products shall be arranged at adistance of not less than 3 m from air outlets and as far as pos-sible from air inlets to pump rooms and cargo pump rooms.
8.3.15 Pressure relief valves and vacuum regulatingvalves (pressure/vacuum valves) shall be type approved by theRegister. The pressure setting, installation tests and markingshall comply with ISO standard 15364:2000 “Ships and ma-rine technology – Pressure/vacuum valves for cargo tanks”(see MSC/Circ.1009).
8.3.16 Devices to prevent the passage of flame (in-cluding high velocity valves) referred to in 8.3.6 shall be typeapproved by the Register.
The design, testing and locating shall complywith the MSC/Circ.677 – Revised standards for design, testingand locating of devices to prevent the passage of flame intocargo tanks in tankers.
8.4 VENTING REQUIREMENTS FORINDIVIDUAL PRODUCTS
8.4.1 Venting requirements for individual products areshown in column g, and additional requirements in column oin the table of Chapter 17.
8.5 CARGO TANK GAS-FREEING
8.5.1 The arrangements for gas-freeing of cargo tanksused for cargoes other than those for which open venting ispermitted shall be such as to minimize the hazards due to thedispersal of flammable or toxic vapours in the atmosphere andto flammable or toxic vapour mixtures in a cargo tank. Ac-cordingly, gas-freeing operations shall be carried out such thatvapour is initially discharged:
.1 through the vent outlets specified in 8.3.4and 8.3.5; or
.2 through outlets at least 2 m above thecargo tank deck level with a vertical exitvelocity of at least 30 m/s maintainedduring the gas-freeing operation; or
.3 through outlets at least 2 m above thecargo tank deck level with a vertical exitvelocity of at least 20 m/s which are pro-tected by suitable devices to prevent thepassage of flame.
When the flammable vapour concentration at theoutlets has been reduced to 30% of the lower flammable limitand, in the case of a toxic product, the vapour concentrationdoes not present a significant health hazard, gas-freeing maythereafter be continued at cargo tank deck level.
8.5.2 The outlets referred to in 8.5.1.2 and 8.5.1.3 maybe fixed or portable pipes.
8.5.3 In designing a gas-freeing system in conformitywith 8.5.1, particularly in order to achieve the required exitvelocities of 8.5.1.2 and 8.5.1.3, due consideration shall begiven to the following:
.1 materials of construction of system;
.2 time to gas-free;
.3 flow characteristics of fans to be used;
.4 the pressure losses created by ducting,piping, cargo tank inlets and outlets;
.5 the pressure achievable in the fan drivingmedium (e.g. water or compressed air);and .6 the densities of the cargo vapour/airmixtures for the range of cargoes to be car-ried.
8.5.4 When designing a gas-freeing system revisedfactors contained in MSC/Circ.731 shall be taken into consid-eration.
8.5.5 The method and instruction for cargo tank gas-freeing shall be described in the Cargo Operation Manual, indetail.
8.5.6 The outlets referred to in 8.5.1.2 and 8.5.1.3shall be arranged as far as practicable at distances specified in8.3.4 and 15.12, as applicable.
8.5.7 The fans used for cargo tank gas freeing, eitherfixed or partable type, located in hazardous locations shall beof nonsparking construction (see Rules, Part 9 – Machinery,5.3).
28 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
9 ENVIRONMENTALCONTROL
9.1 GENERAL
9.1.1 Vapour spaces within cargo tanks and, in somecases, spaces surrounding cargo tanks may require to havespecially controlled atmospheres.
9.1.2 There are four different types of control forcargo tanks, as follows:
.1 Inerting: by filling the cargo tank and associ-ated piping systems and, where specified inChapter 15, the spaces surrounding the cargotanks, with a gas or vapour which will notsupport combustion and which will not reactwith the cargo, and maintaining that condition.
.2 Padding: by filling the cargo tank and associ-ated piping systems with a liquid, gas or va-pour which separates the cargo from the air,and maintaining that condition.
.3 Drying: by filling the cargo tank and associ-ated piping systems with moisture-free gas orvapour with a dewpoint of -40°C or below atatmospheric pressure, and maintaining thatcondition.
.4 Ventilation: forced or natural.
9.1.3 Where inerting or padding of cargo tanks is re-quired:
.1 An adequate supply of inert gas for use infilling and discharging the cargo tanksshall be carried or shall be manufacturedon board unless a shore supply is avail-able. In addition, sufficient inert gas shallbe available on the ship to compensate fornormal losses during transportation.
.2 The inert gas system on board the shipshall be able to maintain a pressure of atleast 0.007 MPa gauge within the con-tainment system at all times. In addition,the inert gas system shall not raise thecargo tank pressure to more than the tank'srelief-valve setting.
.3 Where padding is used, similar arrange-ments for supply of the padding mediumshall be made as required for inert gas in9.1.3.1 and 9.1.3.2.
.4 Means shall be provided for monitoringullage spaces containing a gas blanket toensure that the correct atmosphere is beingmaintained.
.5 Inerting or padding arrangements or both,where used with flammable cargoes, shallbe such as to minimize the creation ofstatic electricity during the admission ofthe inerting medium.
9.1.4 Where drying is used and dry nitrogen is used asthe medium, similar arrangements for supply of the dryingagent shall be made to those required in 9.1.3. Where dryingagents are used as the drying medium on all air inlets to thetank, sufficient medium shall be carried for the duration of the
voyage, taking into consideration the diurnal temperaturerange and the expected humidity.
9.2 ENVIRONMENTAL CONTROLREQUIREMENTS FOR INDIVIDUAL
PRODUCTS
9.2.1 The required types of environmental control forcertain products are shown in column h in the table of Chapter17.
9.3 APPLICATION
9.3.1 Notwithstanding the requirements specified incolumn h in the Table 17.1.1-1, (see 9.2.1), chemical tankersof 20,000 tonnes deadweight and over, if intended for the car-riage of products with a flash point not exceeding 60°C, listedin the Table 17.1.1-1 and Table 18.1.1-1, and having:
.1 individual cargo tanks exceeding 3,000m3; or
.2 cargo tanks fitted with washing machineswith the individual nozzle capacity ex-ceeding 17.5 m3/h; or
.3 a total combined throughput from thenumber of washing machines in use in acargo tank, at any one time, in excess of110 m3/h,
shall be fitted with an inert gas system complying as specifiedin 9.4.1 to 9.4.3.
9.3.2 In addition to the requirements specified in 9.3.1chemical tankers of 20,000 tonnes deadweight and over, in-tended to carry oil cargoes (see Rules, Part 1 – General Re-quirements, Chapter 1 / 2.16) with a flashpoint not exceeding60°C, or other liquid products having a similar fire hazard (seeChapter 18) shall be equipped with an inert gas system com-plying with the requirements as specified in 9.4.1 to 9.4.3.
9.4 ARRANGEMENT AND DESIGN OFINERT GAS SYSTEMS
9.4.1 The inert gas system based on oil fired inert gasgenerators shall comply with the requirements of the resolu-tion A.567(14).
As an alternative to the water seal in the inertgas line on deck, an arrangement consisting of two shut-offvalves in series with a venting valve in between (double blockand bleed) may be accepted by the Register. The followingconditions shall apply:
.1 operation of the valve shall be automati-cally executed. Signals for opening/closingshall be taken from the process directly,e.g. inert gas flow or differential pressure;
.2 alarm for faulty operation of the valvesshall be provided, e.g. the operation statusof “Blower stop” and “Supply valve open”is an alarm condition.
.3 second non return device shall be a screw-down type check valve or shall consist of acheck valve and shut-off valve fitteddownstream of the water seal.
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9.4.2 In addition to the requirements detailed in reso-lution A.567(14) the inert gas system based on oil fired inertgas generators shall comply with the requirements for auto-matic combustion control, capacity and number of blowers,corrosion resistance and fire protection measures as specifiedin Rules, Part 17 - Fire Protection, 3.10.2.3, 3.10.4.5,3.10.4.7, 3.10.5.9, 3.10.6.12 and 3.10.9.2.
9.4.3 It shall be possible to isolate cargo tanks fromthe inert gas system by removing spool pieces and blankingpipe ends or by double blanks with an intermediate vent andprovisions for detection of leakage.
The connections to the inert gas supply mainwhich serve for purging and gas-freeing of cargo piping sys-tem components shall consist of removable spool pieces. Atthe connection to the cargo piping system a stop valve with ablank flange shall be provided.
9.4.4 In ships carrying toxic substance the inert gasgenerator shall be located in the separate room intended forthat purpose solely and located aft of the cargo area. Such aspace shall be separated from the machinery spaces at least bya gastight steel boundaries having no doors or other openingsleading to machinery spaces and from accommodation andservice spaces by open decks, cofferdams or similar spaces.The ventilation shall be of the pressure type and air inlets shallbe located on the open deck outside the cargo area. Accessdoors shall be located on the transverse bulkhead not facingthe cargo area or on the outboard side of the superstructure ordeckhouse at a distance not less than that specified in 3.2.3.
The inert gas supply main shall not be located in,or have any connection with systems located in machineryspaces, accommodation and service spaces.
9.4.5 The Register may accept system using inert gasfrom other hydrocarbons production sources provided that anequivalent standard of safety is achieved.
9.4.6 An inert gas system based on production of inertgas by means other than combustion of hydrocarbons may beaccepted upon special considerations by the Register and pro-vided that an equivalent standard of safety, as required in 9.4.1to 9.4.3, is achieved (see 9.5).
9.5 NITROGEN GENERATOR SYSTEM
9.5.1 The following requirements are specific only tothe gas generator system and apply where inert gas is pro-duced by separating air into its component gases by passingcompressed air through a bundle of hollow fibres, semi-permeable membranes or absorber materials.
9.5.2 Where such systems are provided in place of theboiler flue gas or oil fired inert gas generators referred to in9.3.1 and 9.3.2 the requirements specified in Rules, Part 17 –Fire Protection, 3.10.1.3, 3.10.3.1 to 3.10.3.4, 3.10.6.1 to3.10.6.9, 3.10.6.14, 3.10.7.2 to 3.10.7.5, 3.10.7.6.1, 3.10.7.6.7,3.10.7.6.9, 3.10.7.7, 3.10.7.8, 3.10.8.6 and 3.10.8.7 or equiva-lent requirements of resolution A.567(14) remain applicablefor the piping arrangements, alarms and instrumentationdownstream of the gas generator.
9.5.3 A nitrogen generator may consist of a feed airtreatment system and any number of membrane or absorbermodules in parallel necessary to meet the required capacity
which shall be at least 125% of the maximum unloading ca-pacity of the ship expressed as a volume.
9.5.4 The air compressor and the nitrogen generatormay be installed in the engine room or in a separate compart-ment. A separate compartment shall be treated as one of “othermachinery spaces” with respect to fire protection.
9.5.5 Where a separate compartment is provided, itshall be positioned outside the cargo area and shall be fittedwith an independent mechanical extraction ventilation systemproviding 6 air changes per hour. A low oxygen alarm, forconcentration below 19.5% by volume, shall be fitted as well.
The compartment shall have no direct access toaccommodation spaces, service and control stations.
9.5.6 The nitrogen generator shall be capable of deliv-ering high purity nitrogen with oxigen content not exceeding5% by volume. The system shall be fitted with automaticmeans to discharge “off-spec” gas to the atmosphere duringstart-up and abnormal operation.
9.5.7 The system shall be provided with two air com-pressors. The total required capacity of the system shall, pref-erably, be divided equally between the two compressors, andin no case shall the single compressor capacity be less than 1/3of the total capacity required.
Only one air compressor may be accepted pro-vided that sufficient spares for the air compressor and itsprime mover are carried on board to enable their failure to berectified by the ship’s crew.
9.5.8 A feed air treatment system shall be fitted to re-move free water, particles and traces of oil from the com-pressed air, and to preserve the specification temperature.
9.5.9 Where fitted, a nitrogen receiver/buffer tankmay be installed in a dedicated compartment or in the separatecompartment containing the air compressors and the generatoror may be located in the cargo area. Where the nitrogen re-ceiver/buffer tank is installed in an enclosed space, the accessshall be arranged only from the open deck and the access doorshall open outwards. Permanent ventilation and alarm shall befitted as required in 9.5.5.
9.5.10 The oxygen-enriched air from the nitrogen gen-erator and the nitrogen-product enriched gas from the protec-tive devices of the nitrogen receiver shall be discharged to asafe location on the open deck.
9.5.11 In order to permit maintenance, sufficient meansof isolation shall be fitted between the generator, receiver,buffer tank and other components.
9.5.12 At least two non-return devices shall be fitted inthe inert gas supply main, one of which shall be of the doubleblock and bleed arrangement (see 9.4.1). The second non-return device shall be equipped with positive means of closure(see 9.4.1.3).
9.5.13 Instrumentation shall be provided for continu-ously indicating the temperature and pressure of air:
.1 at the discharge side of the compressor;
.2 at the entrance side of the nitrogen gen-erator.
9.5.14 Instrumentation shall be fitted for continuouslyindicating and permanently recording the oxygen content of
30 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
the inert gas downstream of the nitrogen generator when inertgas is being supplied.
9.5.15 The instrumentation referred to in 9.5.14 shall beplaced in the cargo control room and in the machinery controlroom (or in the machinery space).
9.5.16 Audible and visual alarms shall be provided toindicate:
.1 low feed-air pressure from compressor asreferred to in 9.5.13.1;
.2 high air temperature as referred to in9.5.13.1;
.3 high condensate level at automatic drain ofwater separator as referred to in 9.5.8;
.4 failure of electrical heater, if fitted;
.5 oxygen content in excess of that requiredin 9.5.6;
.6 failure of power supply to the instrumen-tation as referred to in 9.5.14.
9.5.17 Automatic shut-down of the system shall be ar-ranged upon alarm conditions as required in 9.5.16.1 to .5.
9.5.18 The alarms required in 9.5.16.1 to .6 shall befitted in the machinery space and cargo control room, whereprovided, but in each case in such a position that they are im-mediately received by responsible members of the crew.
9.6 NITROGEN/INERT GAS SYSTEMFITTED FOR PURPOSES OTHER THAN
INERTING REQUIRED IN 9.3.1 AND9.3.2
9.6.1 This section applies to systems fitted on chemi-cal tankers irrespective of their deadweight.
9.6.2 The requirements of section 9.5 shall apply ex-cept 9.5.1, 9.5.2, 9.5.3 and 9.5.7.
9.6.3 Where the connections to the cargo tanks, to thehold spaces or to cargo piping are not permanent, the non-return devices required in 9.5.12 may be substituted by twonon-return valves.
9.7 INERT GAS STORAGE SYSTEM
9.7.1 As an alternative to the inert gas systems re-quired in 9.4 and 9.5 an inert gas storage systems may also beprovided for inerting the spaces surrounding cargo tanks andfor blanketing the cargo in the tanks. The stored quantity ofgas shall be sufficient to allow for losses of inert gas duringthe voyage.
9.7.2 The inert gas may be stored in pressure vesselsor cylinders. Pressure vessels shall be located in the cargo areaon the open deck or in separate spaces. Pressure vessels andcylinders shall comply with the requirements specified inRules, Part 10 – Boilers, Heat Exchangers and Pressure Ves-sels, Chapter 6.
The requirements of section 3.1.3 and 3.8.2 shallapply wherever relevant to the installation of pressure vesselsand cylinders in closed spaces
9.7.3 A pressure reducing valve backed up by a safetyvalve shall be fitted to pressure vessels and batteries of cylin-ders. The downstream piping system shall comply as follows:
.1 In the inert gas main within the cargo areatwo non-return devices shall be fitted inseries. If the fixed connections to the cargotanks are provided, the design of the non-return devices shall comply with 9.5.12.Otherwise, removable spool pieces shallbe fitted at all connections to cargo tanks,spaces surrounding tanks and cargo andprocess pipelines.
.2 Shut-off devices shall be fitted upstreamand down-stream of these spool pieces.Pressure reducing valves shall be backedup by safety valves.
9.7.4 Cargo tanks and the spaces surrounding cargotanks which shall be inerted shall be equipped with means formeasuring the pressure and with connections for checking thetank atmosphere as well as with suitable safety devices to pre-vent excessive pressure or vacuum.
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2009
10 ELECTRICALINSTALLATIONS
10.1 GENERAL
10.1.1 The provisions of this chapter are applicable toships carrying cargoes which are inherently, or due to their re-action with other substances, flammable or corrosive to theelectrical equipment, and shall be applied in conjunction withrelevant requirements specified in, Rules, Part 12 – ElectricalEquipment.
10.1.2.1 Electrical installations shall be such as to mini-mize the risk of fire and explosion from flammable products(reference is made to recommendations IEC 60079-1-1:2002).
10.1.2.2 Where the specific cargo is liable to damage thematerials normally used in electrical apparatus, due consid-eration shall be given to the particular characteristics of thematerials chosen for conductors, insulation, metal parts, etc.As far as necessary, these components shall be protected toprevent contact with gases or vapours liable to be encountered.
10.1.3 The Register shall take appropriate steps to en-sure uniformity in the implementation and the application ofthe provisions of this chapter in respect of electrical installa-tions.
10.1.4 Electrical equipment, cables and wiring shall notbe installed in the hazardous locations unless it conforms withthe standards not inferior to those acceptable to the Register(see 10.1.2.1). However, for locations not covered by suchstandards, electrical equipment, cables and wiring which donot conform to the standards may be installed in hazardous lo-cations based on a risk assessment to the satisfaction of theRegister, to ensure that an equivalent level of safety is assured.
10.1.5 Where electrical equipment is installed in haz-ardous locations, as permitted in this chapter, it shall be to thesatisfaction of the Register and certified by the relevantauthorities recognized by the Register for operation in theflammable atmosphere concerned, as indicated in column i inthe table of Chapter 17.
10.1.6 For guidance, indication is given, “Yes” if theflashpoint of a substance is in excess of 60°C. In the case of aheated cargo, carriage conditions might need to be establishedand the requirements for cargoes having a flashpoint not ex-ceeding 60ºC applied.
10.1.7 Unless otherwise required in this chapter the re-quirements for electrical installations specified in Rules, Part12 – Electrical Equipment, 19.2 shall be complied with.
10.1.8 The materials in electrical apparatus, such ascopper, aluminium and insulation, shall, as far as practicable,be protected, e.g. by encapsulation, to prevent contact withvapours of products referred to in 10.1.2.2.
10.1.9 Absence of information on temperature class andapparatus group in column i in the table of Chapter 17 meansthat data are not currently available, and this shall not be con-fused with the non-flammable, “NF”, notation describingsome products.
10.2 BONDING
10.2.1 Independent cargo tanks shall be electricallybonded to the hull. All gasketed cargo-pipe joints and hoseconnections shall be electrically bonded.
10.2.2 The devices intended to continuously monitorthe insulation level of all distribution systems shall alsomonitor all circuits, other than intrinsically safe circuits, con-nected to apparatus in hazardous areas or passing through suchareas. An audible and visual alarm shall be given, at a mannedposition, in the event of an abnormally low level of insulation.
10.2.3 To avoid the hazard of an incentive dischargedue to the build-up of static electricity resulting from the flowof the liquid/gases/vapours, the resistance between any pointon the surface of the cargo and slop tanks, piping systems andequipment, and the hull of the ship shall be not greater than106 Ω.
10.2.4 Where bonding straps are required, they shall be:.1 clearly visible so that any shortcoming can
be clearly detected;.2 designed and sited so that they are pro-
tected against mechanical damage and arenot affected by high resistivity contamina-tion, e.g. corrosive products or paint; and
.3 easy to install and replace.
10.3 ELECTRICAL REQUIREMENTSFOR INDIVIDUAL PRODUCTS
10.3.1 Electrical requirements for individual productsare shown in column i in the table of Chapter 17.
10.4 HAZARDOUS LOCATIONS ANDTYPE OF ELECTRICAL EQUIPMENT
AND WIRING
10.4.1 The restrictions in this section do not precludethe use of intrinsically safe systems and circuits (Ex)i in allhazardous locations including cargo piping. It is particularlyrecommended that intrinsically safe systems and circuits (Ex)iare used for measurement, monitoring, control and communi-cation purposes.
10.4.2 CARGOES WITH A FLASHPOINTEXCEEDING 60oC (CLOSED CUPTEST)
.1 Cargo tanks, cargo piping and cargopump-rooms are the only hazardous loca-tion (Zone 2) for such cargoes which have“Yes” notation in column i in the table ofChapter 17.When electrical equipment, adequate forthe space concerned, is used the followingshall be observed:.1.1 Submerged cargo pump motors and
their associated cables may be per-mitted by the Register, due consid-eration being given to the chemicaland physical characteristics of the
32 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
individual products or clearly indi-cated group of products, as applica-ble. Arrangements shall be made toprevent the energizing of motors andcables in flammable gas-air mixturesand to de-energize the motors andcables in the event of low liquidlevel. Such a shutdown shall be indi-cated by an alarm at the cargo con-trol station.
.1.2 Where electrical equipment is lo-cated in a cargo pump-room, dueconsideration shall be given to theuse of types of apparatus which en-sure the absence of arcs or sparksand hot spots during normal opera-tion, or which are of a certified safetype.
.2 Where the cargo is heated to within 15°Cof its flashpoint value, the requirements of10.4.3 shall apply.
10.4.3 For cargoes with a flashpoint not exceeding60°C (closed cup test), with “No” qualification in column i inthe table of Chapter 17, the hazardous locations are given be-low. In addition to intrinsically safe systems and circuits (Ex)i,the only electrical installations permitted in hazardous loca-tions are the following:
.1 Cargo tanks and cargo piping (Zone 0):.1.1 No additional electrical equipment is
permitted..2 Void spaces adjacent to above or below
integral tanks (Zone 1):.2.1 Thorough runs of cables. Such ca-
bles shall be installed in heavy gaugesteel pipes with gastight joints. Ex-pansion bends shall not be fitted insuch spaces.
.2.2 Electrical depth sounding or log de-vices and impressed current cathodicprotection system anodes or elec-trodes. These devices shall behoused in gastight enclosures; asso-ciated cables shall be protected as re-ferred to in 10.4.3.2.1.
.3 Hold spaces containing independent cargotanks (Zone 1):.3.1 Through runs of cable without any
additional protection..3.2 Lighting fittings with pressurized
enclosure (Ex)p or of the flameprooftype (Ex)d.The lighting system shall be dividedbetween at least two branch circuits.All switches and protective devicesshall interrupt all poles or phases andshall be located in a non-hazardouslocation.
.3.3 Electrical depth sounding or log de-vices and impressed current cathodicprotection system anodes or elec-trodes. These devices shall behoused in gastight enclosures.
.4 Cofferdams and permanent (for examplesegregated) ballast tanks adjacent to cargotanks (Zone 1):.4.1 See .3;.4.2 Corrosion-resistant pipes, providing
adequate mechanical protection shallbe used in compartments which maybe filled with sea water (e.g. perma-nent ballast tanks).
.5 Cargo pump-rooms and pump-rooms inthe cargo area (Zone 1):.5.1 Lighting fittings with pressurized
enclosures (Ex)p or of the flame-proof type (Ex)d. The lighting sys-tem shall be divided between at leasttwo branch circuits. All switches andall protective devices shall interruptall poles or phases and shall be lo-cated in a non-hazardous location.
.5.2 Electrical motors for driving cargopumps and any associated auxiliarypumps shall be separated from thesespaces by a gastight bulkhead ordeck. Flexible couplings, or othermeans of maintaining alignment,shall be fitted to the shafts betweenthe driven equipment and its motors,and in addition, glands shall be pro-vided in accordance with recognizedstandards where the shafts passthrough the bulkhead or deck. Suchelectrical motors shall be located in acompartment having positive pres-sure ventilation.
.5.3 Flameproof general alarm, fire-extinguishing system visual and/oraudible indicators (Ex)d.
.5.4 Safe type sensors for the gas detec-tion systems.
.6 Spaces on open deck, or semi-enclosedspaces on open deck, within 3 m of anycargo tank outlet, gas or vapour outlet,cargo pipe flange, cargo valve or entranceand ventilation opening to cargo pump-rooms; cargo area on open deck over allcargo tanks and cargo tank holds to the fullwidth of the ship, plus 3 m fore and aft andup to a height of 2,4 m above the deck.Spaces on open deck within the coamingsor within a distance of 3 m beyond thecoamings fitted in accordance with 3.2.8and 3.7.7 (Zone 1)..6.1 Equipment of a certified safe type,
adequate for open deck use;.6.2 Through runs of cables;.6.3 Expansion bends shall not be fitted
within 3 m of any cargo tank outlet,gas or vapour outlet, cargo pipeflange, cargo valve or entrance andventilation opening to cargo pump-rooms.
.7 Enclosed or semi-enclosed spaces in whichpipes containing cargoes are located; en-closed or semi-enclosed spaces immedi-
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2009
ately above cargo tanks (e.g. betweendecks) or having bulkheads above and inline with cargo tank bulkheads, enclosedor semi-enclosed spaces immediatelyabove cargo pump-rooms or above verticalcofferdams adjoining cargo tanks, unlessseparated by a gastight deck and suitablyventilated; and compartments for cargohoses (Zone 1):.7.1 Lighting fittings of a certified safe
type. The lighting system shall bedivided between at least two branchcircuits. All switches and protectivedevices shall interrupt all poles orphases and shall be located in a non-hazardous location.
.7.2 Through runs of cables..8 Enclosed or semi-enclosed spaces having a
direct opening into any hazardous locationreferred to above shall have electrical in-stallations complying with the require-ments for the space or zone into which theopening leads.
10.4.4 For the purpose of 10.4.3.6 the length of thecargo area on an open deck shall be measured between theforward bulkhead of the foremost cargo tank and the afterbulkhead of the aftermost cargo tank or when independenttanks are fitted between the forward bulkhead of the foremosthold space and the after bulkhead of the aftermost hold space.
34 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
11 FIRE PROTECTION ANDFIRE EXTINCTION
11.1 APPLICATION11.1.1 The requirements for tankers (< 60°C) specifiedin Rules, Part 17 – Fire Protection shall apply to ships cov-ered by this Part of the Rules, irrespective of tonnage, includ-ing ships of less than 500 gross tonnage, except that (seeMSC-MEPC.2/Circ.4):
.1 requirements specified in Table 3.1.2-1,items 4 and 11 (i.e. the requirements forprotection of cargo tanks, cargo tanks deckarea and cargo pump-rooms) shall not ap-ply;
.2 requirements as specified in 2.4.3.4 (i.e.the requirements for location of the maincargo control station) need not apply;
.3 requirements specified in section 3.3, andTable 3.1.2-1, items 7 and 8 (i.e. the re-quirements for the water fire main systemand fixed fire-extinguishing system in ma-chinery spaces) shall apply as they wouldapply to cargo ships of 2,000 gross ton-nage and over;
.4 requirements specified in Table 3.1.2-1,item 7 note 8 (i.e. the requirements forfixed local application fire-extinguishingsystem) shall apply to ships of 2,000 grosstonnage and over;
.5 the provisions of 11.3, hereunder, shall ap-ply in lieu of the requirements in Table3.1.2-1, item 4;
.6 the provisions of 11.2, hereunder, shall ap-ply in lieu of the requirements in Table3.1.2-1, item 11;
.7 requirements specified in 2.4.5.7 shall ap-ply to ships of 500 gross tonnage and over,replacing “hydrocarbon gases” by “flam-mable vapours” in regulation; and
.8 requirements specified in Table 5.1.2-1item 18 shall apply to ships of 500 grosstonnage and over.
11.1.2 Notwithstanding the provisions of 11.1.1, shipsengaged solely in the carriage of products which are non-flammable (entry NF in column i of the table of minimum re-quirements) need not comply with requirements for tankers (<60°C) specified in Rules, Part 17 – Fire Protection, 2.4, pro-vided that they comply with the requirements for cargo shipsspecified in section 2.3 of that Part, except that requirementsas specified in Table 3.1.2-1, item 5 need not apply to suchships and 11.2 and 11.3, hereunder, need not apply.11.1.3 For ships engaged solely in the carriage of prod-ucts with a flashpoint exceeding 60°C (entry “Yes“ in columni of the table of minimum requirements), the requirementsspecified in Rules, Part 17 – Fire Protection, 2.5 for tankers(> 60oC) may apply, in lieu of the provisions of this chapter.
11.2 CARGO PUMP-ROOMS
11.2.1 The cargo pump-room of any ship shall be pro-vided with a fixed carbon dioxide fire-extinguishing system asspecified in Rules, Part 17 – Fire Protection, 3.9. A noticeshall be exhibited at the controls stating that the system is onlyto be used for fire-extinguishing and not for inerting purposes,due to the electrostatic ignition hazard. The alarms referred toin Rules, Part 17 – Fire Protection, 4.3 shall be safe for use ina flammable cargo vapour/air mixture. For the purpose of thisrequirement, an extinguishing system shall be provided whichwould be suitable for machinery spaces. However, the amountof gas carried shall be sufficient to provide a quantity of freegas equal to 45% of the gross volume of the cargo pump-roomin all cases.
11.2.2 Cargo pump-rooms of ships which are dedicatedto the carriage of a restricted number of cargoes shall be pro-tected by an appropriate fire-extinguishing system approvedby the Register.
11.2.3 If cargoes are to be carried which are not suitedto extinguishment by carbon dioxide or equivalent media, thecargo pump-room shall be protected by a fire extinguishingsystem consisting of either a fixed pressure-water spraying orhigh-expansion foam system (see Rules, Part 17 – Fire Pro-tection, 3.5 and 3.8.3). The International Certificate of Fitnessfor the Carriage of Dangerous Chemicals in Bulk shall reflectthis conditional requirement.
11.2.4 For the media and systems equivalent to the car-bon dioxide fire-extinguishing system see MSC/Circ.848 andMSC.1/Circ.1267 (gas fire-extinguishing systems) andMSC.1/Circ.1270 (aerosol fire-extinguishing systems).
11.2.5 For the systems equivalent to the pressure-waterspraying or high-expansion foam system referred to in 11.2.3,see MSC/Circ.1165, MSC.1/Circ.1237 and MSC.1/Circ.1269(water-based fire-extinguishing systems) and MSC.1/Circ.1271 (high-expansion foam fire-extinguishing systems u-sing inside air).
11.2.6 Foam concentrate stored onboard shall beperiodically controlled. The tests as specified inMSC/Circ.670 shall be performed and carried out at recog-nized laboratories.
11.2.7 A record of the age of the foam concentrate andof subsequent controls shall be kept onboard.
11.3 CARGO AREA
11.3.1 Every ship shall be provided with a fixed deckfoam system in accordance with the requirements of 11.3.2 to11.3.12.
11.3.2 Only one type of foam concentrate shall be sup-plied, and it shall be effective for the maximum possible num-ber of cargoes intended to be carried. For other cargoes forwhich foam is not effective or is incompatible, additional ar-rangements to the satisfaction of the Register shall be pro-vided. Regular protein foam shall not be used.
11.3.3 The arrangements for providing foam shall becapable of delivering foam to the entire cargo tanks deck areaas well as into any cargo tank, the deck of which is assumed tobe ruptured.
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11.3.4 The deck foam system shall be capable of simpleand rapid operation. The main control station for the systemshall be suitably located outside of the cargo area, adjacent tothe accommodation spaces and readily accessible and operablein the event of fires in the areas protected.
11.3.5 The rate of supply of foam solution shall be notless than the greatest of the following:
.1 2 ℓ/min per square metre of the cargotanks deck area, where cargo tanks deckarea means the maximum breadth of theship times the total longitudinal extent ofthe cargo tank spaces;
.2 20 ℓ/min per square metre of the horizon-tal sectional area of the single tank havingthe largest such area;
.3 10 ℓ/min per square metre of the area pro-tected by the largest monitor, such areabeing entirely forward of the monitor, butnot less than 1,250 l/min. For ships lessthan 4,000 tonnes deadweight, the mini-mum capacity of the monitor shall be tothe satisfaction of the Register.
11.3.6 Sufficient foam concentrate shall be supplied toensure at least 30 min of foam generation when using thehighest of the solution rates stipulated in 11.3.5.1, 11.3.5.2 and11.3.5.3.
11.3.7 Foam from the fixed foam system shall be sup-plied by means of monitors and foam applicators. At least50% of the foam rate required in 11.3.5.1 or 11.3.5.2 shall bedelivered from each monitor. The capacity of any monitorshall be at least 10 l/min of foam solution per square metre ofdeck area protected by that monitor, such area being entirelyforward of the monitor. Such capacity shall be not less than1,250 l/min. For ships less than 4,000 tonnes deadweight, theminimum capacity of the monitor shall be to the satisfaction ofthe Register.
11.3.8 The distance from the monitor to the farthestextremity of the protected area forward of that monitor shallbe not more than 75% of the monitor throw in still air condi-tions.
11.3.9 A monitor and hose connection for a foam appli-cator shall be situated both port and starboard at the poop frontor accommodation spaces facing the cargo area.
11.3.10 Applicators shall be provided for flexibility ofaction during fire-fighting operations and to cover areasscreened from the monitors. The capacity of any applicatorshall be not less than 400 l/min and the applicator throw instill air conditions shall be not less than 15 m. The number offoam applicators provided shall be not less than four. Thenumber and disposition of foam main outlets shall be such thatfoam from at least two applicators can be directed to any partof the cargo tanks deck area.
11.3.11 Valves shall be provided in the foam main, andin the fire main where this is an integral part of the deck foamsystem, immediately forward of any monitor position to iso-late damaged sections of those mains.
11.3.12 Operation of a deck foam system at its requiredoutput shall permit the simultaneous use of the minimum re-quired number of jets of water at the required pressure fromthe fire main.
11.3.13 Ships which are dedicated to the carriage of a re-stricted number of cargoes shall be protected by alternativeprovisions to the satisfaction of the Register when they are justas effective for the products concerned as the deck foam sys-tem required for the generality of flammable cargoes.
11.3.14 Suitable portable fire-extinguishing equipmentfor the products to be carried shall be provided and kept ingood operating order.
11.3.15 Where flammable cargoes are to be carried, allsources of ignition shall be excluded from hazardous locationsunless such sources conform with 10.1.4.
11.3.16 Ships fitted with bow or stern loading and un-loading arrangements shall be provided with one additionalfoam monitor meeting the requirements of 11.3.7 and one ad-ditional applicator meeting the requirements of 11.3.10. Theadditional monitor shall be located to protect the bow or sternloading and unloading arrangements. The area of the cargoline forward or aft of the cargo area shall be protected by theabove-mentioned applicator.
11.3.17 For the part of cargoes for which foam is not ef-fective or is incompatible, an alternative system provided shallbe just as effective for the products concerned as the deckfoam system required for the generality of flammable cargoes.
Where the alternative provisions, as referred toin 11.3.13, is a dry powder system, it shall comply with therequirements specified in Rules, Part 17 – Fire Protection,3.12.
11.3.18 The term “regular protein foam” referred to in11.3.2 means the foam without either any agents or anti-frozenagents added to bring the liquid point to level not higher than0°C.
11.3.19 For ships of less than 4,000 tonnes deadweight(see 11.3.7) the minimum capacity of the monitor shall be1,000 l/min and the application rate shall be at least 10l/min/m2 of the area to be protected.
11.3.20 Operation of a deck foam system at its requiredoutput shall permit the simultaneous use of the minimum re-quired number of jets of water at the required pressure fromthe fire main on deck over the full length of the ship, and inthe accommodation and service spaces, control stations andmachinery spaces.
11.3.21 At least two portable fire-extinguishers shall beprovided for each cargo manifold. These fire-extinguishersshall be stored at suitable places, except for the time of cargooperation.
11.3.22 For the purpose of the requirements in 11.3.15internal combustion engines shall not be installed in cargopump rooms, in pump rooms and in other spaces adjacent toor located above cargo tanks. However, reciprocating steamengines with a working temperature lower than the maximumsurface temperature stated in 7.1.15 may be installed in theabove mentioned rooms and spaces.
The maximum temperature of the steam andheating media in the cargo area shall be adjusted to complywith maximum surface temperature. See also 3.7.12.
11.3.23 Foam concentrate stored onboard shall be peri-odically controlled. The tests as specified in MSC/Circ.799shall be performed and carried out at recognized laboratories.
36 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
A record of the age of the foam concentrate andof subsequent controls shall be kept onboard.
11.3.24 In applying the requirements for extinguishingmedia in this section, MSC/Circ.314 may be used which pro-vides guidance for calculating the capacity of the fixed deckfoam systems for chemical tankers.
11.4 ADDITIONAL REQUIREMENTS
11.4.1 All fire-extinguishing media determined to beeffective for each product are listed in column l in the tableof Chapter 17.
11.4.2 Where several fire-extinguishing media includ-ing foam are determined effective for each product, foam fire-extinguishing system shall be provided.
RULES FOR THE CLASSIFICATION OF SHIPS 37PART 27
2009
12 MECHANICALVENTILATION IN THE CARGO
AREA
For ships to which this Part of the Rules applies,the requirements of this chapter replace the requirementsspecified in Rules, Part 8 – Piping, 7.4.
However, for products addressed under para-graphs 11.1.2 and 11.1.3, except acids and products for whichparagraph 15.17 applies, the requirements specified in Rules,Part 8 – Piping, 7.4 may apply in lieu of the provisions of thischapter.
12.1 SPACES NORMALLY ENTEREDDURING CARGO-HANDLING
OPERATIONS
12.1.1 Cargo pump-rooms and other enclosed spaceswhich contain cargo-handling equipment and similar spaces inwhich work is performed on the cargo shall be fitted with me-chanical ventilation systems, capable of being controlled fromoutside such spaces.
12.1.2 Provision shall be made to ventilate such spacesprior to entering the compartment and operating the equipmentand a warning notice requiring the use of such ventilation shallbe placed outside the compartment.
12.1.3 Mechanical ventilation inlets and outlets shall bearranged to ensure sufficient air movement through the spaceto avoid the accumulation of toxic or flammable vapours orboth (taking into account their vapour densities) and to ensuresufficient oxygen to provide a safe working environment, butin no case shall the ventilation system have a capacity of lessthan 30 changes of air per hour, based upon the total volumeof the space. For certain products, increased ventilation ratesfor cargo pump-rooms are prescribed in 15.17.
12.1.4 Ventilation systems shall be permanent and shallnormally be of the extraction type. Extraction from above andbelow the floor plates shall be possible. In rooms housingmotors driving cargo pumps, the ventilation shall be of thepositive-pressure type.
12.1.5 Ventilation exhaust ducts from spaces within thecargo area shall discharge upwards in locations at least 10 min the horizontal direction from ventilation intakes and open-ings to accommodation, service and machinery spaces andcontrol stations and other spaces outside the cargo area.
12.1.6 Ventilation intakes shall be so arranged as tominimize the possibility of recycling hazardous vapours fromany ventilation discharge opening.
12.1.7 Ventilation ducts shall not be led through ac-commodation, service and machinery spaces or other similarspaces.
12.1.8 Electric motors driving fans shall be placed out-side the ventilation ducts if the carriage of flammable productsis intended. Ventilation fans and fan ducts, in way of fansonly, for hazardous locations referred to in Chapter 10 shall beof non-sparking construction, defined as:
.1 impellers or housing of non-metallic con-struction, due regard being paid to theelimination of static electricity;
.2 impellers and housing of non-ferrous ma-terials;
.3 impellers and housing of austenitic stain-less steel; and
.4 ferrous impellers and housing with not lessthan 13 mm design tip clearance.
Any combination of an aluminium or a magne-sium alloy fixed or rotating component and a ferrous fixed orrotating component, regardless of tip clearance, is considereda sparking hazard and shall not be used in these places.
12.1.9 Sufficient spare parts shall be carried for eachtype of fan on board required by this chapter.
12.1.10 Protection screens of not more than 13 mmsquare mesh shall be fitted in outside openings of ventilationducts.
12.1.11 Pump-rooms intended solely for ballast transferneed not comply with the requirements in 12.1.1. The re-quirements of 12.1.1 are only applicable to the pump-roomswhere pumps for cargo, such as cargo pumps, strippingpumps, pumps for slop tanks, pumps for COW or similarpumps are provided.
12.1.12 Spaces referred to in 12.1.1 shall be ventilatedfor a period of at least of 15 minutes prior to entering intocompartment and operating the equipment and ventilationsystem shall be kept in operation all the time the persons arepresent and the equipment is operated.
A warning notice requiring the use of such ven-tilation shall be placed at the entrance to the compartmentconcerned.
12.1.13 For the requirements about interconnection ofoperation of lighting and ventilation in the cargo pump-roomsin ships carrying products with a flash point not exceeding60°C see 3.3.13.2.
12.1.14 Ventilation systems controls required in 12.1.1shall include the ventilation ducts dampers for inlet and outletopenings and shall be placed in an easily accessible positionabove the weather deck.
12.1.15 The height of the ventilation systems outletsshall be not less than 3 m above the weather deck or 2 mabove the fore and aft gangway if fitted within 3 m of thegangway. For certain products increased heights are pre-scribed in 15.17.
12.1.16 The ventilation inlets shall be fitted in locationsat least 3 m in the horizontal direction from ventilation inletsand openings to accommodation spaces, service spaces, con-trol stations, machinery spaces and other spaces outside thecargo area. The height of ventilation inlets shall be not lessthan 3 m above the weatherdeck.
12.1.17 For the purpose of the requirements in 12.1.9,one spare impeller shall be provided for each type of fan.
38 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
12.2 PUMP-ROOMS AND OTHERENCLOSED SPACES NORMALLY
ENTERED
12.2.1 Pump-rooms and other enclosed spaces normallyentered which are not covered by 12.1.1 shall be fitted withmechanical ventilation systems, capable of being controlledfrom outside such spaces and complying with the require-ments of 12.1.3, except that the capacity shall not be less than20 changes of air per hour, based upon the total volume of thespace. Provision shall be made to ventilate such spaces prior topersonnel entering.
12.2.2 The term “other enclosed spaces normally en-tered” shall include the special lockers and storage rooms re-quired in 14.1.2 and suitable clearly marked locker required in14.2.5 which are easily accessible to personnel.
12.2.3 The provisions of 12.2.1 shall apply irrespectivewhether the controls for pumps and valves in the pump roomare provided outside the pump room or not.
12.2.4 The distance of the ventilation system outletsand inlets from ventilation inlets, ventilation outlets and otheropenings to the spaces referred to in 12.1.16 shall be not lessthan 3 m in the horizontal direction.
The height of the ventilation inlets shall be notless than 3 m above the weatherdeck.
12.3 SPACES NOT NORMALLYENTERED
12.3.1 Double bottoms, cofferdams, duct keels, pipetunnels, hold spaces and other spaces where cargo may accu-mulate shall be capable of being ventilated to ensure a safeenvironment when entry into the spaces is necessary. Where apermanent ventilation system is not provided for such spaces,approved means of portable mechanical ventilation shall beprovided. Where necessary, owing to the arrangement ofspaces, for instance hold spaces, essential ducting for ventila-tion shall be permanently installed. For permanent installa-tions the capacity of eight air changes per hour shall be pro-vided and for portable systems the capacity of 16 air changesper hour. Fans or blowers shall be clear of personnel accessopenings, and shall comply with 12.1.8.
12.3.2 Portable fans driven by electric or internal com-bustion motors are not acceptable.
12.3.3 For the recommendations for ventilation of thedouble hull spaces see MSC/Circ.730.
RULES FOR THE CLASSIFICATION OF SHIPS 39PART 27
2009
13 INSTRUMENTATION
13.1 GAUGING
13.1.1 Cargo tanks shall be fitted with one of the fol-lowing types of gauging devices:
.1 Open device: which makes use of anopening in the tanks and may expose thegauger to the cargo or its vapour. An ex-ample of this is the ullage opening.
.2 Restricted device: which penetrates thetank and which, when in use, permits asmall quantity of cargo vapour or liquid tobe exposed to the atmosphere. When not inuse, the device is completely closed. Thedesign shall ensure that no dangerous es-cape of tank contents (liquid or spray) cantake place in opening the device.
.3 Closed device: which penetrates the tank,but which is part of a closed system andkeeps tank contents from being released.Examples are the float-type systems, elec-tronic probe, magnetic probe and protectedsight-glass. Alternatively, an indirect de-vice which does not penetrate the tankshell and which is independent of the tankmay be used. Examples are weighing ofcargo, pipe flow meter.
13.1.2 Gauging devices shall be independent of theequipment required under 15.19.
13.1.3 Open gauging and restricted gauging shall beallowed only where:
.1 open venting is allowed by this Part of theRules; or
.2 means are provided for relieving tankpressure before the gauge is operated.
13.1.4 The types of gauging devices for individualproducts are shown in column j in the table of Chapter 17.
13.1.5 A restricted gauging device may consist of asounding pipe with an inside diameter not greater than 200mm, fitted with a vapour-tight cover. The pipe shall be pro-vided with holes located inside the cargo tank in the proximityof the tank top in order to make its internal pressure equal tothat of the tank.
13.1.6 Where in addition to the closed gauging device,for a certain products, an overflow-control system and highlevel alarm are also required, the requirements for indepen-dency of systems as specified in 15.19.10 to 15.19.14 shall becomplied with.
13.2 VAPOUR DETECTION
13.2.1 Ships carrying toxic or flammable products orboth shall be equipped with at least two instruments designedand calibrated for testing for the specific vapours in question.If such instruments are not capable of testing for both toxicconcentrations and flammable concentrations, then two sepa-rate sets of instruments shall be provided.
13.2.2 Vapour-detection instruments may be portableor fixed. If a fixed system is installed, at least one portable in-strument shall be provided.
13.2.3 When toxic-vapour-detection equipment is notavailable for some products which require such detection, asindicated in column k in the table of Chapter 17, the Registermay exempt the ship from the requirement, provided an ap-propriate entry is made on the International Certificate of Fit-ness for the Carriage of Dangerous Chemicals in Bulk. Whengranting such an exemption, the Register shall recognize thenecessity for additional breathing-air supply and an entry shallbe made on the International Certificate of Fitness for the Car-riage of Dangerous Chemicals in Bulk drawing attention to theprovisions of 14.2.4 and 16.4.2.2.
13.2.4 Vapour-detection requirements for individualproducts are shown in column k in the table of Chapter 17.
13.2.5 Vapour-detection instruments, either fixed orportable, shall be of a type recognised suitable by the Registerfor the products to be carried. The spaces which shall bemonitored are:
.1 cargo pump-rooms (see 11.1.1.7) andpump-rooms located in the cargo area;
.2 spaces containing motors driving cargopumps, except for the machinery space;
.3 enclosed spaces containing cargo pipingand equipment connected with cargo han-dling, cofferdams, enclosed spaces anddouble bottoms and double hall spacesadjacent to cargo tanks;
.4 pipe tunnels in the cargo area;
.5 other spaces, deemed necessary by theRegister, depending on the ship arrange-ment.
Where a fixed system is installed, it shall serveat least the spaces among those listed above which are nor-mally entered by the crew (see 12.1 and 12.2).
40 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
14 PERSONNEL PROTECTION
14.1 PROTECTIVE EQUIPMENT
14.1.1 For the protection of crew members who are en-gaged in loading and discharging operations, the ship shallhave on board suitable protective equipment consisting oflarge aprons, special gloves with long sleeves, suitable foot-wear, coveralls of chemical-resistant material, and tight-fittinggoggles or face shields or both. The protective clothing andequipment shall cover all skin so that no part of the body isunprotected.
14.1.2 Work clothes and protective equipment shall bekept in easily accessible places and in special lockers. Suchequipment shall not be kept within accommodation spaces,with the exception of new, unused equipment and equipmentwhich has not been used since undergoing a thorough cleaningprocess. The Register may, however, approve storage roomsfor such equipment within accommodation spaces if ade-quately segregated from living spaces such as cabins, pas-sageways, dining rooms, bathrooms, etc.
14.1.3 Protective equipment shall be used in any op-eration, which may entail danger to personnel.
14.1.4 The number of work clothes and protectiveequipment shall be sufficient for those working in the cargoarea, on deck and in cargo pump room, and in any case notless than three complete sets shall be provided.
14.1.5 Where one type of the work clothes and protec-tive equipment is not suitable for all products the ship is certi-fied to carry, the necessary number of sets for respective typesof cargo shall be provided.
14.1.6 The lockers for used work cloths and protectiveequipment which have not undergone a thorough cleaningprocess, located within accommodation spaces, shall complywith requirements in 3.2.5.
14.1.7 For the minimum safety standards for ships car-rying liquids in bulk containing benzene see MSC/Circ.1095and MSC.1/Circ.1220.
14.2 SAFETY EQUIPMENT
14.2.1 Ships carrying cargoes for which 15.12, 15.12.1or 15.12.3 is listed in column o in the table of Chapter 17 shallhave on board sufficient but not less than three complete setsof safety equipment, each permitting personnel to enter a gas-filled compartment and perform work there for at least 20 min.Such equipment shall be in addition to that required for tank-ers (< 60°C) in Rules, Part 17 – Fire Protection, Table 5.1.2-1/ item 10.5.
14.2.2 One complete set of safety equipment shall con-sist of:
.1 one self-contained air-breathing apparatus(not using stored oxygen);
.2 protective clothing, boots, gloves andtight-fitting goggles;
.3 fireproof lifeline with belt resistant to thecargoes carried; and
.4 explosion-proof lamp.
14.2.3 For the safety equipment required in 14.2.1, allships shall carry either:
.1 one set of fully charged spare air bottlesfor each breathing apparatus;
.2 a special air compressor suitable for thesupply of high-pressure air of the requiredpurity;
.3 a charging manifold capable of dealingwith sufficient spare air bottles for thebreathing apparatus; or
.4 fully charged spare air bottles with a totalfree air capacity of at least 6,000 ℓ for eachbreathing apparatus on board in excess ofthe requirements for tankers (< 60°C) asspecified in Rules, Part 17 – Fire Protec-tion, Table 5.1.2-1 /item 10.5.
14.2.4 A cargo pump-room on ships carrying cargoeswhich are subject to the requirements of 15.18 or cargoes forwhich in column k in the table of Chapter 17 toxic-vapour-detection equipment is required but is not available shall haveeither:
.1 a low-pressure line system with hose con-nections suitable for use with the breathingapparatus required by 14.2.1. This systemshall provide sufficient high-pressure aircapacity to supply, through pressure-reduction devices, enough low-pressure airto enable two men to work in a gas-dangerous space for at least 1 h withoutusing the air bottles of the breathing appa-ratus. Means shall be provided for re-charging the fixed air bottles and thebreathing apparatus air bottles from a spe-cial air compressor suitable for the supplyof high-pressure air of the required purity;or
.2 an equivalent quantity of spare bottled airin lieu of the low-pressure air line.
14.2.5 At least one set of safety equipment as requiredby 14.2.2 shall be kept in a suitable clearly marked locker in areadily accessible place near the cargo pump-room. The othersets of safety equipment shall also be kept in suitable, clearlymarked, easily accessible places.
14.2.6 The breathing apparatus shall be inspected atleast once a month by a responsible officer, and the inspectionrecorded in the ship's log-book. The equipment shall be in-spected and tested by an expert at least once a year.
14.2.7 The equivalent quantity of spare bottled air per-mitting personnel to perform work for at least 20 min, as re-quired in 14.2.1, shall be not less than 800 l of the free air vol-ume, for each set.
14.2.8 The equivalent quantity of spare bottled air re-ferred to in 14.2.4.2 shall be not less than 4,800 l under at-mospheric pressure.
14.3 EMERGENCY EQUIPMENT
14.3.1 Ships carrying cargoes, for which “Yes“ is indi-cated in column n of Chapter 17, shall be provided with suit-
RULES FOR THE CLASSIFICATION OF SHIPS 41PART 27
2009
able respiratory and eye protection sufficient for every personon board for emergency escape purposes, subject to the fol-lowing:
.1 filter-type respiratory protection is unac-ceptable;
.2 self-contained breathing apparatus shallhave at least a duration of service of 15min;
.3 emergency escape respiratory protectionshall not be used for fire-fighting or cargo-handling purposes and shall be marked tothat effect.
14.3.2 The ship shall have on board medical first-aidequipment, including oxygen resuscitation equipment and an-tidotes for cargoes to be carried, based on the guidelines de-veloped by the Organization (see Medical First Aid Guide forUse in Accidents Involving Dangerous Goods (MFAG)).
14.3.3 A stretcher which is suitable for hoisting an in-jured person up from spaces such as the cargo pump-roomshall be placed in a readily accessible location.
14.3.4 Suitably marked decontamination showers andan eyewash shall be available on deck in convenient locations.The showers and eyewash shall be operable in all ambientconditions.
14.3.5 Medical first-aid equipment shall be kept in aspecial clearly marked locker, located within accommodationspaces.
14.3.6 The decontamination showers and eye washshall be provided on the main deck at both sides in way of theloading/unloading manifold and at the front of superstructuresor deck houses.
In order for the showers and eye wash to be op-erable in all ambient conditions, the water pipes shall be fittedwith a heating system or other suitable installation so as toavoid any ice formation in the piping.
42 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
15 SPECIAL REQUIREMENTS
15.1 GENERAL
15.1.1 The requirements of this chapter are applicablewhere specific reference is made in column o in the table ofChapter 17. These requirements are additional to the generalrequirements of Chapter 1 to Chapter 14.
15.2 AMMONIUM NITRATESOLUTION (93%or less)
15.2.1 The ammonium nitrate solution shall contain atleast 7% by weight of water. The acidity (pH) of the cargowhen diluted with ten parts of water to one part of cargo byweight shall be between 5.0 and 7.0. The solution shall notcontain more than 10 ppm chloride ions, 10 ppm ferric ionsand shall be free of other contaminants.
15.2.2 Tanks and equipment for ammonium nitrate so-lution shall be independent of tanks and equipment containingother cargoes or combustible products. Equipment whichmay, in service or when defective, release combustible prod-ucts into the cargo (e.g. lubricants), shall not be used. Tanksshall not be used for seawater ballast.
15.2.3 Except where expressly approved by the Regis-ter, ammonium nitrate solutions shall not be transported intanks which have previously contained other cargoes unlesstanks and associated equipment have been cleaned to the satis-faction of the Register.
15.2.4 The temperature of the heat-exchanging mediumin the tank heating system shall not exceed 160°C. The heat-ing system shall be provided with a control system to keep thecargo at a bulk mean temperature of 140°C. High-temperaturealarms at 145°C and 150°C and a low-temperature alarm at125°C shall be provided. Where the temperature of the heat-exchanging medium exceeds 160°C, an alarm shall also begiven. Temperature alarms and controls shall be located on thenavigating bridge.
15.2.5 If the bulk mean cargo temperature reaches145°C, a cargo sample shall be diluted with ten parts of dis-tilled or demineralized water to one part of cargo by weightand the pH shall be determined by means of a narrow-rangeindicator paper or stick. Acidity measurements shall then betaken every 24 hours. If the pH is found to be below 4.2, am-monia gas shall be injected into the cargo until the pH of 5.0 isreached.
15.2.6 A fixed installation shall be provided to injectammonia gas into the cargo. Controls for this system shall belocated on the navigation bridge. For this purpose, 300 kg ofammonia per 1,000 tonnes of ammonium nitrate solution shallbe available on board.
15.2.7 Cargo pumps shall be of the centrifugal deep-well type or of the centrifugal type with water-flushed seals.
15.2.8 Vent piping shall be fitted with approved weath-erhoods to prevent clogging. Such weatherhoods shall be ac-cessible for inspection and cleaning.
15.2.9 Hot work on tanks, piping and equipment whichhave been in contact with ammonium nitrate solution shallonly be done after all traces of ammonium nitrate have beenremoved, inside as well as outside.
15.2.10 For the purpose of injecting ammonia the cargomay be circulated by means of the cargo pump. Gaseous am-monia shall be injected into the circulating cargo.
15.2.11 The seal for the centrifugal pump shall be astuffing box provided with a lantern ring. Fresh water underpressure shall be injected into the stuffing box at the locationof the lantern ring.
15.3 CARBON DISULPHIDE
Carbon disulphide may be carried either under awater pad or under a suitable inert gas pad as specified in thefollowing paragraphs.
Carriage under water pad
15.3.1 Provision shall be made to maintain a water padin the cargo tank during loading, unloading and transit. In ad-dition, an inert-gas pad shall be maintained in the ullage spaceduring transit.
15.3.2 All openings shall be in the top of the tank,above the deck.
15.3.3 Loading lines shall terminate near the bottom ofthe tank.
15.3.4 A standard ullage opening shall be provided foremergency sounding.
15.3.5 Cargo piping and vent lines shall be independentof piping and vent lines used for other cargo.
15.3.6 Pumps may be used for discharging cargo, pro-vided they are of the deepwell or hydraulically driven sub-mersible types. The means of driving a deepwell pump shallnot present a source of ignition for carbon disulphide and shallnot employ equipment that may exceed a temperature of 80°C.
15.3.7 If a cargo discharge pump is used, it shall be in-serted through a cylindrical well extending from the tank topto a point near the tank bottom. A water pad shall be formed inthis well before attempting pump removal unless the tank hasbeen certified as gas-free.
15.3.8 Water or inert-gas displacement may be used fordischarging cargo, provided the cargo system is designed forthe expected pressure and temperature.
15.3.9 Safety relief valves shall be of stainless steelconstruction.
15.3.10 Because of its low ignition temperature andclose clearances required to arrest its flame propagation, onlyintrinsically safe systems and circuits are permitted in the haz-ardous locations (see 10.4.3).
Carriage under suitable inert gas pad
15.3.11 Carbon disulphide shall be carried in independ-ent tanks with a design pressure of not less than 0.06 MPagauge.
15.3.12 All openings shall be located on the top of thetank, above the deck.
RULES FOR THE CLASSIFICATION OF SHIPS 43PART 27
2009
15.3.13 Gaskets used in the containment system shall beof a material which does not react with, or dissolve in, carbondisulphide.
15.3.14 Threaded joints shall not be permitted in thecargo containment system, including the vapour lines.
15.3.15 Prior to loading, the tank(s) shall be inerted withsuitable inert gas until the oxygen level is 2% by volume orlower. Means shall be provided to automatically maintain apositive pressure in the tank using suitable inert gas duringloading, transport and discharge. The system shall be able tomaintain this positive pressure between 0.01 and 0.02 MPa,and shall be remotely monitored and fitted withover/underpressure alarms.
15.3.16 Hold spaces surrounding an independent tankcarrying carbon disulphide shall be inerted by a suitable inertgas until the oxygen level is 2% or less. Means shall be pro-vided to monitor and maintain this condition throughout thevoyage. Means shall also be provided to sample these spacesfor carbon disulphide vapour.
15.3.17 Carbon disulphide shall be loaded, transportedand discharged in such a manner that venting to the atmos-phere does not occur. If carbon disulphide vapour is returnedto shore during loading or to the ship during discharge, the va-pour return system shall be independent of all other contain-ment systems.
15.3.18 Carbon disulphide shall be discharged only bysubmerged deepwell pumps or by a suitable inert gas dis-placement. The submerged deepwell pumps shall be operatedin a way that prevents heat build-up in the pump. The pumpshall also be equipped with a temperature sensor in the pumphousing with remote readout and alarm in the cargo controlroom. The alarm shall be set at 80°C. The pump shall also befitted with an automatic shut-down device to be activated ifthe tank pressure falls below atmospheric pressure during thedischarge.
15.3.19 Air shall not be allowed to enter the cargo tank,cargo pump or lines while carbon disulphide is contained inthe system.
15.3.20 No other cargo handling, tank cleaning or de-ballasting shall take place concurrent with loading or dis-charge of carbon disulphide.
15.3.21 A water spray system of sufficient capacity shallbe provided to blanket effectively the area surrounding theloading manifold, the exposed deck piping associated withproduct handling and the tank domes. The arrangement ofpiping and nozzles shall be such as to give an uniform distri-bution rate of 10 l/m
2/min. Remote manual operation shall be
arranged such that remote starting of pumps supplying thewater-spray system and remote operation of any normallyclosed valves in the system can be carried out from a suitablelocation outside the cargo area adjacent to the accommodationspaces and readily accessible and operable in the event of firein the areas protected. The water-spray system shall be capa-ble of both local and remote manual operation, and the ar-rangement shall ensure that any spilled cargo is washed away.Additionally, a water hose with pressure to the nozzle whenatmospheric temperature permits, shall be connected ready forimmediate use during loading and unloading operations.
15.3.22 No cargo tanks shall be more than 98% liquid-full at the reference temperature (R).
15.3.23 The maximum volume (VL) of cargo to beloaded in a tank shall be:
L
RL VV
ρρ98.0=
where:VL = volume of the tankρR = density of cargo at the reference tem-
perature (R)ρL = density of cargo at the loading tempera-
ture
15.3.24 The maximum allowable tank filling limits foreach cargo tank shall be indicated for each loading tempera-ture which may be applied, and for the applicable maximumreference temperature, on a list approved by the Register. Acopy of the list shall be permanently kept on board by themaster.
15.3.25 Zones on weather deck, or semi-enclosed spaceson weather deck within three metres of a tank outlet, gas orvapour outlet, cargo pipe flange or cargo valve of a tank certi-fied to carry carbon disulphide, shall comply with the electri-cal equipment requirements specified for carbon disulphide incolumn i, in the table of Chapter 17. Also, within the specifiedzone, no other heat sources, like steam piping with surfacetemperatures in excess of 80°C shall be allowed.
15.3.26 Means shall be provided to ullage and samplethe cargo without opening the tank or disturbing the positivesuitable inert gas blanket.
15.3.27 The product shall be transported only in accor-dance with a cargo handling plan that has been approved bythe Register. Cargo handling plans shall show the entire cargopiping system. A copy of the approved cargo handling planshall be available on board. The International Certificate ofFitness for the Carriage of Dangerous Chemicals in Bulk shallbe endorsed to include reference to the approved cargo han-dling plan.
15.4 DIETHYL ETHER
15.4.1 Unless inerted, natural ventilation shall be pro-vided for the voids around the cargo tanks while the vessel isunder way. If a mechanical ventilation system is installed, allblowers shall be of non-sparking construction. Mechanicalventilation equipment shall not be located in the void spacessurrounding the cargo tanks.
15.4.2 Pressure-relief-valve settings shall not be lessthan 0.02 MPa gauge for gravity tanks.
15.4.3 Inert-gas displacement may be used for dis-charging cargo from pressure tanks provided the cargo systemis designed for the expected pressure.
15.4.4 In view of the fire hazard, provision shall bemade to avoid any ignition source or heat generation or both inthe cargo area.
15.4.5 Pumps may be used for discharging cargo, pro-vided that they are of a type designed to avoid liquid pressureagainst the shaft gland or are of a hydraulically operated sub-merged type and are suitable for use with the cargo.
44 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
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15.4.6 Provision shall be made to maintain the inert-gaspad in the cargo tank during loading, unloading and transit.
15.5 HYDROGEN PEROXIDESOLUTIONS
15.5.1 Hydrogen peroxide solutions over 60%but not over 70% by mass
15.5.1.1 Hydrogen peroxide solutions over 60% but notover 70% by mass shall be carried in dedicated ships only andno other cargoes shall be carried.
15.5.1.2 Cargo tanks and associated equipment shall beeither pure aluminium (99.5%) or solid stainless steel (304L,316, 316L or 316Ti), and passivated in accordance with ap-proved procedures. Aluminium shall not be used for piping ondeck. All nonmetallic materials of construction for the con-tainment system shall neither be attacked by hydrogen perox-ide nor contribute to its decomposition.
15.5.1.3 Pump-rooms shall not be used for cargo-transferoperations.
15.5.1.4 Cargo tanks shall be separated by cofferdamsfrom oil fuel tanks or any other space containing flammable orcombustible materials.
15.5.1.5 Tanks intended for the carriage of hydrogen per-oxide shall not be used for seawater ballast.
15.5.1.6 Temperature sensors shall be installed at the topand bottom of the tank. Remote temperature readouts andcontinuous monitoring shall be located on the navigatingbridge. If the temperature in the tanks rises above 35°C, visi-ble and audible alarms shall be activated on the navigatingbridge.
15.5.1.7 Fixed oxygen monitors (or gas-sampling lines)shall be provided in void spaces adjacent to tanks to detectleakage of the cargo into these spaces. Remote readouts, con-tinuous monitoring (if gas-sampling lines are used, intermit-tent sampling is satisfactory) and visible and audible alarmssimilar to those for the temperature sensors shall also be lo-cated on the navigating bridge. The visible and audible alarmsshall be activated if the oxygen concentration in these voidspaces exceeds 30% by volume. Two portable oxygen moni-tors shall also be available as back-up systems.
15.5.1.8 As a safeguard against uncontrolled decomposi-tion, a cargo-jettisoning system shall be installed to dischargethe cargo overboard. The cargo shall be jettisoned if the tem-perature rise of the cargo exceeds a rate of 2°C per hour over a5-hour period or when the temperature in the tank exceeds40°C.
15.5.1.9 Cargo tank venting systems shall have pres-sure/vacuum-relief valves for normal controlled venting, andrupture discs or a similar device for emergency venting,should tank pressure rise rapidly as a result of uncontrolleddecomposition. Rupture discs shall be sized on the basis oftank design pressure, tank size and anticipated decompositionrate.
15.5.1.10 A fixed water-spray system shall be provided fordiluting and washing away any concentrated hydrogen perox-
ide solution spilled on deck. The areas covered by the water-spray shall include the manifold/hose connections and the tanktops of those tanks designated for carrying hydrogen peroxidesolutions. The minimum application rate shall satisfy the fol-lowing criteria:
.1 The product shall be diluted from theoriginal concentration to 35% by masswithin 5 minutes of the spill.
.2 The rate and estimated size of the spillshall be based upon maximum anticipatedloading and discharge rates, the time re-quired to stop flow of cargo in the event oftank overfill or a piping/hose failure, andthe time necessary to begin application ofdilution water with actuation at the cargocontrol location or on the navigatingbridge.
15.5.1.11 Only those hydrogen peroxide solutions whichhave a maximum decomposition rate of 1% per year at 25°Cshall be carried. Certification from the shipper that the productmeets this standard shall be presented to the master and kepton board. A technical representative of the manufacturer shallbe on board to monitor the transfer operations and have thecapability to test the stability of the hydrogen peroxide. Heshall certify to the master that the cargo has been loaded in astable condition.
15.5.1.12 Protective clothing that is resistant to hydrogenperoxide solutions shall be provided for each crew memberinvolved in cargo-transfer operations. Protective clothing shallinclude nonflammable coveralls, suitable gloves, boots andeye protection.
15.5.2 Hydrogen peroxide solutions over 8%but not over 60% by mass.
15.5.2.1 The ship's shell plating shall not form anyboundaries of tanks containing this product.
15.5.2.2 Hydrogen peroxide shall be carried in tanksthoroughly and effectively cleaned of all traces of previouscargoes and their vapours or ballast. Procedures for inspection,cleaning, passivation and loading of tanks shall be in accor-dance with MSC/Circ.394 (see 15.5.3). A certificate shall beon board the vessel indicating that the procedures in the cir-cular have been followed. The passivation requirement may bewaived by an Administration for domestic shipments of shortduration. Particular care in this respect is essential to ensurethe safe carriage of hydrogen peroxide:
.1 When hydrogen peroxide is carried noother cargoes shall be carried simultane-ously.
.2 Tanks which have contained hydrogenperoxide may be used for other cargoesafter cleaning in accordance with the pro-cedures outlined in MSC/Circ.394.
.3 Consideration in design shall provideminimum internal tank structure, freedraining, no entrapment and ease of visualinspection.
15.5.2.3 Cargo tanks and associated equipment shall beeither pure aluminium (99.5%) or solid stainless steel of typessuitable for use with hydrogen peroxide (e.g. 304, 304L, 316,316L, 316Ti). Aluminium shall not be used for piping on
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deck. All non-metallic materials of construction for the con-tainment system shall neither be attacked by hydrogen perox-ide nor contribute to its decomposition.
15.5.2.4 Cargo tanks shall be separated by a cofferdamfrom fuel oil tanks or any other space containing materials in-compatible with hydrogen peroxide.
15.5.2.5 Temperature sensors shall be installed at the topand bottom of the tank. Remote temperature readouts andcontinuous monitoring shall be located on the navigatingbridge. If the temperature in the tank rises above 35°C, visibleand audible alarms shall activate on the navigating bridge.
15.5.2.6 Fixed oxygen monitors (or gas-sampling lines)shall be provided in void spaces adjacent to tanks to detectleakage of the cargo into these spaces. The enhancement offlammability by oxygen enrichment shall be recognized. Re-mote readouts, continuous monitoring (if gas-sampling linesare used, intermittent sampling is satisfactory) and visible andaudible alarms similar to those for the temperature sensorsshall also be located on the navigating bridge. The visible andaudible alarms shall activate if the oxygen concentration inthese void spaces exceeds 30% by volume. Two portable oxy-gen monitors shall also be available as back-up systems.
15.5.2.7 As a safeguard against uncontrolled decomposi-tion, a cargo-jettisoning system shall be installed to dischargethe cargo overboard. The cargo shall be jettisoned if the tem-perature rise of the cargo exceeds a rate of 2°C per hour over a5-hour period or when the temperature in the tank exceeds40°C.
15.5.2.8 Cargo tank venting systems with filtration shallhave pressure/vacuum-relief valves for normal controlledventing, and a device for emergency venting, should tankpressure rise rapidly as a result of an uncontrolled decomposi-tion rate, as stipulated in 15.5.2.7. These venting systems shallbe designed in such a manner that there is no introduction ofseawater into the cargo tank even under heavy sea conditions.Emergency venting shall be sized on the basis of tank designpressure and tank size.
15.5.2.9 A fixed water-spray system shall be provided fordiluting and washing away any concentrated solution spilledon deck. The areas covered by the water-spray shall includethe manifold/hose connections and the tank tops of those tanksdesignated for the carriage of hydrogen peroxide solutions.The minimum application rate shall satisfy the following crite-ria:
.1 The product shall be diluted from theoriginal concentration to 35% by masswithin 5 minutes of the spill.
.2 The rate and estimated size of the spillshall be based upon maximum anticipatedloading and discharge rates, the time re-quired to stop flow of the cargo in theevent of tank overfill or a piping/hose fail-ure, and the time necessary to begin appli-cation of dilution water with actuation atthe cargo control location or on the navi-gating bridge.
15.5.2.10 Only those hydrogen peroxide solutions whichhave a maximum decomposition rate of 1% per year at 25°Cshall be carried. Certification from the shipper that the prod-uct meets this standard shall be presented to the master and
kept on board. A technical representative of the manufacturershall be on board to monitor the transfer operations and havethe capability to test the stability of the hydrogen peroxide. Heshall certify to the master that the cargo has been loaded in astable condition.
15.5.2.11 Protective clothing that is resistant to hydrogenperoxide shall be provided for each crew member involved incargo-transfer operations. Protective clothing shall includecoveralls that are nonflammable, suitable gloves, boots andeye protection.
15.5.2.12 During transfer of hydrogen peroxide the relatedpiping system shall be separated from all other systems.Cargo hoses used for transfer of hydrogen peroxide shall bemarked “FOR HYDROGEN PEROXIDE TRANSFERONLY“.
15.5.3 Procedures for inspection, cleaning, pas-sivation and loading of tanks for the car-riage of hydrogen peroxide solutions 8-60%, which have contained other car-goes, or for the carriage of other cargoesafter the carriage of hydrogen peroxide(MSC/Circ.394)
15.5.3.1 Tanks having contained cargoes other than hy-drogen peroxide shall be inspected, cleaned and passivated be-fore re-use for the transport of hydrogen peroxide solutions.The procedures for inspection and cleaning, as given in para-graphs 15.5.3.2 to 15.5.3.8 below, apply to both stainless steeland pure aluminium tanks (see paragraph 15.5.2.2). Proce-dures for passivation are given in paragraph 15.5.3.9 forstainless steel and 15.5.3.10 for aluminium. Unless otherwisespecified, all steps apply to the tanks and to all associatedequipment having been in contact with the other cargo.
15.5.3.2 After unloading the previous cargo the tank shallbe rendered safe and inspected for any residues, scale and rust.
15.5.3.3 Tanks and associated equipment shall be washedwith clean filtered water. The water to be used shall at leasthave the quality of potable water with a low chlorine content.
15.5.3.4 Trace residues and vapours of the previous cargoshall be removed by steaming of tank and equipment.
15.5.3.5 Tank and equipment are washed again withclean water (quality as above) and dried, using filtered, oil-free air.
15.5.3.6 The atmosphere in the tank shall be sampled andinvestigated for the presence of organic vapours and oxygenconcentration.
15.5.3.7 The tank shall be checked again by visual in-spection for residues of the previous cargo, scale and rust aswell as for any smell of the previous cargo.
15.5.3.8 If inspection or measurements indicate the pres-ence of residues of the previous cargo or its vapours, actionsdescribed in paragraphs 15.5.3.3 to 15.5.3.5 shall be repeated.
15.5.3.9 Tank and equipment made from stainless steelwhich have contained other cargoes than hydrogen peroxide orwhich have been under repair shall be cleaned and passivated,regardless of any previous passivation, according to the fol-lowing procedure:
46 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
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.1 New welds and other repaired parts shallbe cleaned and finished using stainlesssteel wire brush, chisel, sandpaper or buff.Rough surfaces shall be given a smoothfinish. A final polishing is necessary.
.2 Fatty and oily residues shall be removedby the use of appropriate organic solventsor detergent solutions in water. The use ofchlorine-containing compounds shall beavoided as they can seriously interferewith passivation.
.3 The residues of the degreasing agent shallbe removed, followed by a washing withwater.
.4 In the next step, scale and rust shall be re-moved by the application of acid (e.g. amixture of nitric and hydrofluoric acids),followed again by a washing with cleanwater.
.5 All the metal surfaces which can come intocontact with hydrogen peroxide shall bepassivated by the application of nitric acidof a concentration between 10 and 35% bymass. The nitric acid must be free fromheavy metals, other oxidizing agents orhydrogen fluoride. The passivation processshall continue for 8 to 24 h, dependingupon the concentration of acid, the ambi-ent temperature and other factors. Duringthis time a continuous contact between thesurfaces to be passivated and the nitricacid shall be ensured. In the case of largesurfaces this may be achieved by recircu-lating the acid. Hydrogen gas may beevolved in the passivation process, leadingto the presence of an explosive atmospherein the tanks. Therefore, appropriate meas-ures must be taken to avoid the build-up orthe ignition of such an atmosphere.
.6 After passivation the surfaces shall bethoroughly washed with clean filtered wa-ter. The washing process shall be repeateduntil the effluent water has the same pHvalue as the incoming water.
.7 Surfaces treated according to the abovesteps may cause some decompositionwhen coming into contact with hydrogenperoxide for the first time. This decompo-sition will cease after a short time (usuallywithin two or three days). Therefore anadditional flushing with hydrogen perox-ide for a period of at least two days is rec-ommended.
.8 Only degreasing agents and acid cleaningagents which have been recommended forthis purpose by the manufacturer of thehydrogen peroxide shall be used in theprocess.
15.5.3.10 Tanks and equipment made from aluminium andwhich have contained cargoes other than hydrogen peroxide,or which have been under repair, shall be cleaned and passi-vated. The following is an example of a recommended proce-dure:
.1 The tank shall be washed with a solutionof a sulphonated detergent in hot water,followed by a washing with water.
.2 The surface shall then be treated for 15 to20 min with a solution of sodium hydrox-ide of a concentration of 7% by mass ortreated for a longer period with a less con-centrated solution (e.g. for 12 h with 0.4 to0.5% sodium hydroxide). To prevent ex-cessive corrosion at the bottom of the tankwhen treating with more concentrated so-lutions of sodium hydroxide, water shallbe added continuously to dilute the sodiumhydroxide solution which collects there.
.3 The tank shall be thoroughly washed withclean, filtered water. As soon as possibleafter washing, the surface shall be passi-vated by the application of nitric acid of aconcentration between 30 and 35% bymass. The passivation process shall con-tinue for 16 to 24 h. During this time acontinuous contact between the surfaces tobe passivated and the nitric acid shall beensured.
.4 After passivation the surfaces shall bethoroughly washed with clean, filteredwater. The washing process shall be re-peated until the effluent water has thesame pH value as the incoming water.
.5 A visual inspection shall be made to en-sure that all surfaces have been treated. Itis recommended that an additional flushingis carried out for a minimum of 24 h withdilute hydrogen peroxide solution of aconcentration approximately 3% by mass.
15.5.3.11 The concentration and stability of the hydrogenperoxide solution to be loaded shall be determined.
15.5.3.12 The hydrogen peroxide is loaded under inter-mittent visual supervision of the interior of the tank from anappropriate opening.
15.5.3.13 If substantial bubbling is observed which doesnot disappear within 15 min after the completion of loading,the contents of the tank shall be unloaded and disposed of inan environmentally safe manner. The tank and equipment shallthen be repassivated as described above.
15.5.3.14 The concentration and stability of the hydrogenperoxide solution shall be determined again. If the same val-ues are obtained within the limits of error as in paragraph15.5.2.10, the tank is considered to be properly passivated andthe cargo ready for shipment.
15.5.3.15 Actions described in paragraphs 15.5.3.2 to15.5.3.8 shall be carried out under the supervision of the mas-ter or shipper. Actions described in paragraphs 15.5.3.9 to15.5.3.15 shall be carried out under the on-site supervision andresponsibility of a representative of the hydrogen peroxidemanufacturer or under supervision and responsibility of an-other person familiar with the safety-relevant properties of hy-drogen peroxide.
15.5.3.16 The following procedure shall be applied whentanks having contained hydrogen peroxide solution are to beused for other products (unless otherwise specified, all steps
RULES FOR THE CLASSIFICATION OF SHIPS 47PART 27
2009
apply to the tanks and to all associated equipment having beenin contact with hydrogen peroxide):
.1 Hydrogen peroxide cargo residue shall bedrained as completely as possible fromtanks and equipment.
.2 Tanks and equipment shall be rinsed withclean water, and subsequently thoroughlywashed with clean water.
.3 The interior of the tank shall be dried andinspected for any residues.
Steps .1 to .3, in 15.5.3.16, shall be carried outunder the supervision of the master or the shipper.
Step .3 in paragraph 15.5.3.16 shall be carriedout by a person familiar with the safety-relevant properties ofthe chemical to be transported and of hydrogen peroxide.
Special cautions
.1 Hydrogen peroxide decomposition mayenrich the atmosphere with oxygen andappropriate precautions shall be observed.
.2 Hydrogen gas may be evolved in the pas-sivation processes described in paragraphs15.5.3.9.5, 15.5.3.10.2 and 15.5.3.10.4,leading to the presence of an explosive at-mosphere in the tank. Therefore, appro-priate measures must be taken to avoid thebuild-up or the ignition of such an atmos-phere.
15.5.3.17 Hydrogen peroxide solutions shall be stabilizedto prevent decomposition. A certificate of stabilization shall beprovided by the manufacturer, and kept on board, specifying:
.1 name and amount of stabilizer added;
.2 date stabilizer was added and duration ofeffectiveness;
.3 any temperature limitations qualifying thestabilizer’s effective lifetime;
.4 the action to be taken should the length ofvoyage exceed the effective lifetime of thestabilizer.
15.6 MOTOR FUEL ANTI-KNOCKCOMPOUNDS (CONTAINING LEAD
ALKYLS)
15.6.1 Tanks used for these cargoes shall not be usedfor the transportation of any other cargo except those com-modities to be used in the manufacture of motor fuel anti-knock compounds containing lead alkyls.
15.6.2 If a cargo pump-room is located on deck levelaccording to 15.18, the ventilation arrangements shall be incompliance with 15.17.
15.6.3 Entry into cargo tanks used for the transportationof these cargoes is not permitted unless approved by the Reg-ister.
15.6.4 Air analysis shall be made for lead content todetermine if the atmosphere is satisfactory prior to allowingpersonnel to enter the cargo pump-room or void spaces sur-rounding the cargo tank.
15.7 PHOSPHORUS, YELLOW ORWHITE
15.7.1 Phosphorus shall, at all times, be loaded, carriedand discharged under a water pad of 760 mm minimum depth.During discharge operations, arrangements shall be made toensure that water occupies the volume of phosphorus dis-charged. Any water discharged from a phosphorus tank shallbe returned only to a shore installation.
15.7.2 Tanks shall be designed and tested to a mini-mum equivalent water head of 2.4 m above the top of the tank,under designed loading conditions, taking into account thedepth, relative density and method of loading and discharge ofthe phosphorus.
15.7.3 Tanks shall be so designed as to minimize theinterfacial area between the liquid phosphorus and its waterpad.
15.7.4 A minimum ullage space of 1% shall be main-tained above the water pad. The ullage space shall be filledwith inert gas or naturally ventilated by two cowled standpipesterminating at different heights but at least 6 m above the deckand at least 2 m above the pump-house top.
15.7.5 All openings shall be at the top of cargo tanks,and fittings and joints attached thereto shall be of materials re-sistant to phosphorus pentoxide.
15.7.6 Phosphorus shall be loaded at a temperature notexceeding 60°C.
15.7.7 Tank heating arrangements shall be external totanks and have a suitable method of temperature control to en-sure that the temperature of the phosphorus does not exceed60°C. A high-temperature alarm shall be fitted.
15.7.8 A water drench system acceptable to the Regis-ter shall be installed in all void spaces surrounding the tanks.The system shall operate automatically in the event of an es-cape of phosphorus.
15.7.9 Void spaces referred to in 15.7.8 shall be pro-vided with effective means of mechanical ventilation whichshall be capable of being sealed off quickly in an emergency.
15.7.10 Loading and discharge of phosphorus shall begoverned by a central system on the ship which, in addition toincorporating high-level alarms, shall ensure that no overflowof tanks is possible and that such operations can be stoppedquickly in an emergency from either ship or shore.
15.7.11 During cargo transfer, a water hose on deck shallbe connected to a water supply and kept flowing throughoutthe operation so that any spillage of phosphorus may bewashed down with water immediately.
15.7.12 Ship-to-shore loading and discharge connectionsshall be of a type approved by the Register.
48 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
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15.8 PROPYLENE OXIDE ORETHYLENE OXIDE/PROPYLENEMIXTURES WITH AN ETHYLENE
OXIDE CONTENT OF MORE THAN 30%BY MASS
15.8.1 Products transported under the provisions of thissection shall be acetylene-free.
15.8.2 Unless cargo tanks are properly cleaned, theseproducts shall not be carried in tanks which have contained asone of the three previous cargoes any products known tocatalyse polymerization, such as:
.1 mineral acids (e.g. sulphuric, hydrochloric,nitric);
.2 carboxylic acids and anhydrides (e.g. for-mic, acetic);
.3 halogenated carboxylic acids (e.g. chlo-racetic);
.4 sulphonic acids (e.g. benzenesulphonic);
.5 caustic alkalis (e.g. sodium hydroxide,potassium hydroxide);
.6 ammonia and ammonia solutions;
.7 amines and amine solutions; and
.8 oxidizing substances.
15.8.3 Before loading, tanks shall be thoroughly and ef-fectively cleaned, to remove all traces of previous cargoesfrom tanks and associated pipework, except where the imme-diately prior cargo has been propylene oxide or ethylene ox-ide/propylene oxide mixtures. Particular care shall be taken inthe case of ammonia in tanks made of steel other than stainlesssteel.
15.8.4 In all cases, the effectiveness of cleaning proce-dures for tanks and associated pipework shall be checked bysuitable testing or inspection, to ascertain that no traces ofacidic or alkaline materials remain that might create a hazard-ous situation in the presence of these products.
15.8.5 Tanks shall be entered and inspected prior toeach initial loading of these products to ensure freedom fromcontamination, heavy rust deposits and visible structural de-fects. When cargo tanks are in continuous service for theseproducts, such inspections shall be performed at intervals ofnot more than two years.
15.8.6 Tanks for the carriage of these products shall beof steel or stainless steel construction.
15.8.7 Tanks for the carriage of these products may beused for other cargoes after thorough cleaning of tanks and as-sociated pipework systems by washing or purging.
15.8.8 All valves, flanges, fittings and accessoryequipment shall be of a type suitable for use with the productsand shall be constructed of steel or stainless steel in accor-dance with recognized standards. Discs or disc faces, seats andother wearing parts of valves shall be made of stainless steelcontaining not less than 11% chromium.
15.8.9 Gaskets shall be constructed of materials whichdo not react with, dissolve in, or lower the autoignition tem-perature of these products and which are fire-resistant andpossess adequate mechanical behaviour. The surface presentedto the cargo shall be polytetrafluoroethylene (PTFE), or mate-
rials giving a similar degree of safety by their inertness. Spi-rally wound stainless steel, with a filler of PTFE or similarfluorinated polymer, may be accepted.
15.8.10 Insulation and packing, if used, shall be of amaterial which does not react with, dissolve in, or lower theautoignition temperature of these products.
Gaskets of other type and/or other materialsshall be type approved by the Register.
15.8.11 The following materials are generally found un-satisfactory for gaskets, packing and similar uses in contain-ment systems for these products and would require testing be-fore being approved by the Register:
.1 neoprene or natural rubber, if it comes intocontact with the products;
.2 asbestos, or binders used with asbestos;
.3 materials containing oxides of magnesium,such as mineral wools.
15.8.12 Threaded joints shall not be permitted in thecargo liquid and vapour lines.
15.8.13 Filling and discharge piping shall extend towithin 100 mm of the bottom of the tank or any sump pit.
15.8.14.1 The containment system for a tank containingthese products shall have a valved vapour-return connection.
15.8.14.2 The products shall be loaded and discharged insuch a manner that venting of the tanks to atmosphere does notoccur. If vapour return to shore is used during tank loading,the vapourreturn system connected to a containment systemfor the product shall be independent of all other containmentsystems (see MSC/Circ.585).
15.8.14.3 During discharge operations, the pressure in thecargo tank must be maintained above 0.007 MPa gauge.
15.8.15 The cargo may be discharged only by deepwellpumps, hydraulically operated submerged pumps, or inert-gasdisplacement. Each cargo pump shall be arranged to ensurethat the product does not heat significantly if the dischargeline from the pump is shut off or otherwise blocked.
15.8.16 Tanks carrying these products shall be ventedindependently of tanks carrying other products. Facilities shallbe provided for sampling the tank contents without openingthe tank to atmosphere.
15.8.17 Cargo hoses used for transfer of these productsshall be marked: “FOR ALKYLENE OXIDE TRANSFERONLY“.
15.8.18 Cargo tanks, void spaces and other enclosedspaces adjacent to an integral gravity cargo tank carrying pro-pylene oxide shall either contain a compatible cargo (thosecargoes specified in 15.8.2 are examples of substances consid-ered incompatible) or be inerted by injection of a suitable inertgas. Any hold space in which an independent cargo tank is lo-cated shall be inerted. Such inerted spaces and tanks shall bemonitored for these products and oxygen. The oxygen contentof these spaces shall be maintained below 2%. Portable sam-pling equipment is satisfactory.
15.8.19 In no case shall air be allowed to enter the cargopump or piping system while these products are containedwithin the system.
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2009
15.8.20 Prior to disconnecting shore-lines, the pressurein liquid and vapour lines shall be relieved through suitablevalves installed at the loading header. Liquid and vapour fromthese lines shall not be discharged to atmosphere.
15.8.21 Propylene oxide may be carried in pressuretanks or in independent or integral gravity tanks. Ethyleneoxide/propylene oxide mixtures shall be carried in independ-ent gravity tanks or pressure tanks. Tanks shall be designed forthe maximum pressure expected to be encountered duringloading, conveying and discharging cargo.
15.8.22.1 Tanks for the carriage of propylene oxide with adesign pressure less than 0.06 MPa gauge and tanks for thecarriage of ethylene oxide/propylene oxide mixtures with adesign pressure of less than 0.12 MPa gauge shall have acooling system to maintain the cargo below the reference tem-perature (R).
Reference temperature means for the purpose ofthese products the temperature corresonding to the vapour pre-ssure of these products at the set pressure of the pressure reliefvalve.
15.8.22.2 The refrigeration requirement for tanks with adesign pressure less than 0.06 MPa gauge may be waived bythe Register for ships operating in restricted areas or on voy-ages of restricted duration, and account may be taken in suchcases of any insulation of the tanks. The area and times of yearfor which such carriage would be permitted shall be includedin the conditions of carriage of the International Certificate ofFitness for the Carriage of Dangerous Chemicals in Bulk.
15.8.23.1 Any cooling system shall maintain the liquidtemperature below the boiling temperature at the containmentpressure. At least two complete cooling plants, automaticallyregulated by variations within the tanks, shall be provided.Each cooling plant shall be complete with the necessary aux-iliaries for proper operation. The control system shall also becapable of being manually operated. An alarm shall be pro-vided to indicate malfunctioning of the temperature controls.The capacity of each cooling system shall be sufficient tomaintain the temperature of the liquid cargo below the refer-ence temperature of the system.
15.8.23.2 An alternative arrangement may consist of threecooling plants, any two of which shall be sufficient to main-tain the liquid temperature below the reference temperature.
15.8.23.3 Cooling media which are separated from theproducts by a single wall only shall be nonreactive with theproducts.
15.8.23.4 Cooling systems requiring compression of theproducts shall not be used.
15.8.24 Pressure-relief-valve settings shall not be lessthan 0.02 MPa gauge and for pressure tanks not greater than0.7 MPa gauge for the carriage of propylene oxide and notgreater than 0.53 MPa gauge for the carriage of propyleneoxide/ethylene oxide mixtures.
15.8.25.1 The piping system for tanks to be loaded withthese products shall be separated (as defined in 3.1.4) frompiping systems for all other tanks, including empty tanks. Ifthe piping system for the tanks to be loaded is not independent(as defined in 1.3.18), the required piping separation shall beaccomplished by the removal of spool-pieces, valves, or otherpipe section and the installation of blank flanges at these loca-
tions. The required separation applies to all liquid and vapourpiping, liquid and vapour vent lines and any other possibleconnections, such as common inert-gas supply lines.
15.8.25.2 These products may be transported only in ac-cordance with cargo-handling plans that have been approvedby the Register. Each intended loading arrangement shall beshown on a separate cargo-handling plan. Cargo-handlingplans shall show the entire cargo piping system and the loca-tions for installation of blank flanges needed to meet the abovepiping separation requirements. A copy of each approvedcargo-handling plan shall be maintained on board the ship.The International Certificate of Fitness for the Carriage ofDangerous Chemicals in Bulk shall be endorsed to includereference to the approved cargo-handling plans.
15.8.25.3 Before each initial loading of these products andbefore every subsequent return to such service, certificationverifying that the required piping separation has been achievedshall be obtained from a responsible person acceptable to theport Administration and carried on board the ship. Each con-nection between a blank flange and a pipeline flange shall befitted with a wire and seal by the responsible person to ensurethat in-advertent removal of the blank flange is impossible.
15.8.26.1 No cargo tanks shall be more than 98% liquid-full at the reference temperature.
15.8.26.2 The maximum volume to which a cargo tankshall be loaded is:
L
RL VV
ρρ98.0=
whereVL = maximum volume to which the tank may
be loadedV = volume of the tankρ
R= density of cargo at the reference tem-
peratureρL
= density of cargo at the loading tempera-ture and pressure
15.8.26.3 The maximum allowable tank filling limits foreach cargo tank shall be indicated for each loading tempera-ture which may be applied and for the applicable maximumreference temperature, on a list to be approved by the Register.A copy of the list shall be permanently kept on board by themaster.
15.8.27 The cargo shall be carried under a suitable pro-tective padding of nitrogen gas. An automatic nitrogen make-up system shall be installed to prevent the tank pressure fallingbelow 0.007 MPa gauge in the event of product temperaturefall due to ambient conditions or maloperation of refrigerationsystems. Sufficient nitrogen shall be available on board tosatisfy the demand of the automatic pressure control. Nitrogenof commercially pure quality (99.9% by volume) shall be usedfor padding. A battery of nitrogen bottles connected to thecargo tanks through a pressure-reduction valve satisfies theintention of the expression “automatic“ in this context.
15.8.28 The cargo tank vapour space shall be tested priorto and after loading to ensure that the oxygen content is 2% byvolume or less.
15.8.29 A water-spray system of sufficient capacity shallbe provided to blanket effectively the area surrounding theloading manifold, the exposed deck piping associated with
50 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
product handling, and the tank domes. The arrangement ofpiping and nozzles shall be such as to give a uniform distribu-tion rate of 10 l/m
2/min. Remote manual operation shall be ar-
ranged such that remote starting of pumps supplying the wa-ter-spray system and remote operation of any normally closedvalves in the system can be carried out from a suitable locationoutside the cargo area, adjacent to the accommodation spacesand readily accessible and operable in the event of fire in theareas protected. The water-spray system shall be capable ofboth local and remote manual operation, and the arrangementshall ensure that any spilled cargo is washed away. Addition-ally, a water hose with pressure to the nozzle, when atmos-pheric temperatures permit, shall be connected ready for im-mediate use during loading and unloading operations.
15.8.30 A remotely operated, controlled closing-rate,shutoff valve shall be provided at each cargo-hose connectionused during cargo transfer.
15.9 SODIUM CHLORATE SOLUTION(50% OR LESS BY MASS)
15.9.1 Tanks and associated equipment, which havecontained this product may be used for other cargoes afterthorough cleaning by washing or purging.
15.9.2 In the event of spillage of this product, all spilledliquid shall be thoroughly washed away without delay. Tominimize fire risk, spillage shall not be allowed to dry out.
15.10 SULPHUR (MOLTEN)
15.10.1 Cargo tank ventilation shall be provided tomaintain the concentration of hydrogen sulphide below onehalf of its lower explosive limit through-out the cargo tank va-pour space for all conditions of carriage (i.e. below 1.85% byvolume).
15.10.2 Where mechanical ventilation systems are usedfor maintaining low gas concentrations in cargo tanks, analarm system shall be provided to give warning if the systemfails.
15.10.3 Ventilation systems shall be so designed and ar-ranged as to preclude depositing of sulphur within the system.
15.10.4 Openings to void spaces adjacent to cargo tanksshall be so designed and fitted as to prevent the entry of water,sulphur or cargo vapour.
15.10.5 Connections shall be provided to permit sam-pling and analysing of vapour in void spaces.
15.10.6 Cargo temperature controls shall be provided toensure that the temperature of the sulphur does not exceed155°C.
15.10.7 Sulphur (molten) has a flashpoint above 60°C ;however, electrical equipment shall be certified safe for gasesevolved.
15.11 ACIDS
15.11.1 The ship's shell plating shall not form anyboundaries of tanks containing mineral acids.
15.11.2 Materials of construction used for cargo tanksshall comply with the requirements specified in Chapter 6.Proposals for lining steel tanks and related piping systemswith corrosion-resistant materials may be considered by theRegister. The elasticity of the lining shall not be less than thatof the supporting boundary plating.
15.11.3 Unless constructed wholly of corrosion-resistantmaterials or fitted with an approved lining, the plating thick-ness shall take into account the corrosivity of the cargo.
15.11.4 Flanges of the loading and discharge manifoldconnections shall be provided with shields, which may beportable, to guard against the danger of the cargo beingsprayed; and in addition, drip trays shall also be provided toguard against leakage on to the deck.
15.11.5 Because of the danger of evolution of hydrogenwhen these substances are being carried, the electrical ar-rangements shall comply with 10.1.4. The certified safe typeequipment shall be suitable for use in hydrogen/air mixtures.Other sources of ignition shall not be permitted in such spaces.
15.11.6 Substances subjected to the requirements of thissection shall be segregated from oil fuel tanks, in addition tothe segregation requirements in 3.1.1.
15.11.7 Provision shall be made for suitable apparatus todetect leakage of cargo into adjacent spaces.
15.11.8 The cargo pump-room bilge pumping and drain-age arrangements shall be of corrosion-resistant materials.
15.11.9 The shields and drip trays referred to in 15.11.4shall be of the corrosion-resistant material.
15.11.10 For the purpose of the requirements in 15.11.6,in segregating cargo tanks carrying cargo or cargo residuesfrom oil fuel tanks none of facial contacts, linear contacts andpoint contacts are accepted.
15.11.11 For the purpose of detecting leakage of cargointo adjacent spaces, the pH meter and hydrogen detector shallbe provided. These apparatus may be of the portable type. Asan alternative the litmus papers may also be used.
15.11.12 Drip trays shall be provided underneath thecargo pumps and associated flange joints to collect and leddrains to bilge wells, and shall be of the corrosion-resistantmaterials, or applied with effective coatings.
Where the bottom of the cargo pump room andits casing walls to a height of 1 m from the bottom are madecorrosion-resistant, this requirements may be dispensed with.
15.12 TOXIC PRODUCTS
15.12.1 Exhaust openings of tank vent systems shall belocated:
.1 at a height of B/3 or 6 m, whichever isgreater, above the weather deck or, in thecase of a deck tank, the access gangway;
.2 not less than 6 m above the fore-and-aftgangway, if fitted within 6 m of the gang-way;
.3 15 m from any opening or air intake to anyaccommodation and service spaces; and
.4 the vent height may be reduced to 3 mabove the deck or fore-and-aft gangway, as
RULES FOR THE CLASSIFICATION OF SHIPS 51PART 27
2009
applicable, provided high-velocity ventvalves of an approved type, directing thevapour/air mixture upwards in an unim-peded jet with an exit velocity of at least30 m/s, are fitted.
15.12.2 Tank venting systems shall be provided with aconnection for a vapour-return line to the shore installation(see MSC/Circ. 585).
15.12.3 Products shall:.1 not be stowed adjacent to oil fuel tanks;.2 have separate piping systems; and.3 have tank vent systems separate from
tanks containing non-toxic products (seealso 3.7.2).
15.12.4 Cargo tank relief-valve settings shall be a mini-mum of 0.02 MPa gauge.
15.12.5 In application of the 15.2.2 connections on thetank venting systems shall be provided with the stop valve.
15.13 CARGOES PROTECTED BYADDITIVES
15.13.1 Certain cargoes with a reference in column o inthe table of Chapter 17, by the nature of their chemical make-up, tend, under certain conditions of temperature, exposure toair or contact with a catalyst, to undergo polymerization, de-composition, oxidation or other chemical changes. Mitigationof this tendency is carried out by introducing small amounts ofchemical additives into the liquid cargo or controlling thecargo tank environment.
15.13.2 Ships carrying these cargoes shall be so de-signed as to eliminate from the cargo tanks and cargo-handlingsystem any material of construction or contaminants whichcould act as a catalyst or destroy the inhibitor.
15.13.3 Care shall be taken to ensure that these cargoesare sufficiently protected to prevent deleterious chemicalchange at all times during the voyage. Ships carrying suchcargoes shall be provided with a certificate of protection fromthe manufacturer, and kept during the voyage, specifying:
.1 the name and amount of additive present;
.2 whether the additive is oxygen - depend-ent;
.3 date additive was put in the product andduration of effectiveness;
.4 any temperature limitations qualifying theadditives' effective lifetime; and
.5 the action to be taken shall the length ofvoyage exceed the effective lifetime of theadditives.
15.13.4 Ships using the exclusion of air as the method ofpreventing oxidation of the cargo shall comply with 9.1.3.
15.13.5 A product containing an oxygen-dependent ad-ditive shall be carried without inertion (in tanks of a size notgreater than 3,000 m3). Such cargoes shall not be carried in atank requiring inertion under the requirements of section 9.3For equivalency arrangements for the carriage of styrenemonomer, see MSC/Circ.879 and MSC/Circ.879/Corr.1.
15.13.6 Venting systems shall be of a design that elimi-nates blockage from polymer build-up. Venting equipmentshall be of a type that can be checked periodically for ade-quacy of operation
15.13.7 Crystallization or solidification of cargoes nor-mally carried in the molten state can lead to depletion of in-hibitor in parts of the tank's contents. Subsequent remeltingcan thus yield pockets of uninhibited liquid, with the accom-panying risk of dangerous polymerization. To prevent this,care shall be taken to ensure that at no time are such cargoesallowed to crystallize or solidify, either wholly or partially, inany part of the tank. Any required heating arrangements shallbe such as to ensure that in no part of the tank does cargo be-come overheated to such an extent that any dangerous polym-erization can be initiated. If the temperature from steam coilswould induce overheating, an indirect low-temperature heatingsystem shall be used.
15.14 CARGOES WITH A VAPOURPRESSURE GREATER THAN 0.1013 MPa
ABSOLUTE AT 37.8OC
15.14.1 For a cargo referenced in column o in the tableof Chapter 17 to this section, a mechanical refrigeration sys-tem shall be provided unless the cargo system is designed towithstand the vapour pressure of the cargo at 45°C. Where thecargo system is designed to withstand the vapour pressure ofthe cargo at 45°C, and no refrigeration system is provided, anotation shall be made in the conditions of carriage on the In-ternational Certificate of Fitness for the Carriage of DangerousChemicals in Bulk to indicate the required relief-valve settingfor the tanks.
15.14.2 A mechanical refrigeration system shall main-tain the liquid temperature below the boiling temperature atthe cargo tank design pressure.
15.14.3 When ships operate in restricted areas and at re-stricted times of the year, or on voyages of limited duration,the Administration involved may agree to waive requirementsfor a refrigeration system. A notation of any such agreement,listing geographic area restrictions and times of the year, orvoyage duration limitations, shall be included in the conditionsof carriage on the International Certificate of Fitness for theCarriage of Dangerous Chemicals in Bulk.
15.14.4 Connections shall be provided for returning ex-pelled gases to shore during loading.
15.14.5 Each tank shall be provided with a pressuregauge which indicates the pressure in the vapour space abovethe cargo.
15.14.6 Where the cargo needs to be cooled, thermome-ters shall be provided at the top and bottom of each tank.
15.14.7.1 No cargo tanks shall be more than 98% liquid-full at the reference temperature (R).
15.14.7.2 The maximum volume (VL) of cargo to beloaded in a tank shall be:
L
RL VV
ρρ98.0=
where
52 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
VL = volume of the tankρ
R= density of cargo at the reference tem-
perature (R)ρ
L = density of cargo at the loading tempera-
ture
15.14.7.3 The maximum allowable tank filling limits foreach cargo tank shall be indicated for each loading tempera-ture which may be applied, and for the applicable maximumreference temperature, on a list approved by the Register. Acopy of the list shall be permanently kept on board by themaster.
15.14.8 In application of the 15.14.4 connections on thetank venting systems shall be provided with the stop valve.
15.15 CARGOES WITH LOWIGNITION TEMPERATURE AND WIDE
FLAMMABILITY RANGE
Deleted.
15.16 CARGO CONTAMINATION
15.16.1 Deleted.
15.16.2 Where column o in the table of Chapter 17 refersto this section, water shall not be allowed to contaminate thiscargo. In addition, the following provisions apply:
.1 Air inlets to pressure/vacuum-relief valvesof tanks containing the cargo shall be situ-ated at least 2 m above the weather deck.
.2 Water or steam shall not be used as theheat-transfer media in a cargo temperaturecontrol system required by Chapter 7.
.3 The cargo shall not be carried in cargotanks adjacent to permanent ballast or wa-ter tanks unless the tanks are empty anddry.
.4 The cargo shall not be carried in tanks ad-jacent to slop tanks or cargo tanks con-taining ballast or slops or other cargoescontaining water which may react in adangerous manner. Pumps, pipes or ventlines serving such tanks shall be separatefrom similar equipment serving tankscontaining the cargo. Pipelines from sloptanks or ballast lines shall not pass throughtanks containing the cargo unless encasedin a tunnel.
15.16.3 In application of the requirements in 15.16.2.3the following shall be complied with.
.1 permanent ballast or water tanks shall bemaintained in dry condition i.e. the tankcasings, frames etc. shall be free from at-tachments of water droplets or from mois-tened condition;
.2 the tanks shall be fitted with spool pieces,outside the tank, being removed after dis-charging ballast and/or water.
15.16.4 In the case of the linear and point contacts di-vided into the cross welding as shown in Figure 15.16.4-1 therequirements in 15.16.2.3 need not apply.
Figure 15.16.4-1Separation of cargo tank from permanent ballast or water
tanks
15.17 INCREASED VENTILATIONREQUIREMENTS
15.17.1 For certain products, the ventilation system asdescribed in 12.1.3 shall have a minimum capacity of at least45 changes of air per hour, based upon the total volume ofspace. The ventilation system exhaust ducts shall discharge atleast 10 m away from openings into accommodation spaces,work areas or other similar spaces, and intakes to ventilationsystems, and at least 4 m above the tank deck.
15.17.2 The term “work areas and similar spaces” in15.17.1 includes the service spaces, cargo control rooms andsimilar spaces but does not include cargo manifolds wherecargo operation is carried.
15.18 SPECIAL CARGO PUMP-ROOMREQUIREMENTS
15.18.1 For certain products, the cargo pump-room shallbe located on the deck level or cargo pumps shall be located inthe cargo tank. The Register may give special consideration tocargo pump-rooms below deck.
15.18.2 No cargo pump-room shall be arranged belowdeck, under any circumstances; i.e. either submerged cargopumps shall be provided or cargo pump-rooms shall be pro-vided on open deck.
15.19 OVERFLOW CONTROL
15.19.1 The provisions of this section are applicablewhere specific reference is made in column o in the table ofChapter 17, and are in addition to the requirements for gaug-ing devices in 13.1.
15.19.2 In the event of a power failure on any system es-sential for safe loading, an alarm shall be given to the opera-tors concerned.
15.19.3 Loading operations shall be terminated at oncein the event of any system essential for safe loading becominginoperative.
15.19.4 Level alarms shall be capable of being testedprior to loading.
15.19.5 The high-level alarm system required under15.19.6 shall be independent of the overflow-control systemrequired by 15.19.7 and shall be independent of the equipmentrequired by 13.1.
RULES FOR THE CLASSIFICATION OF SHIPS 53PART 27
2009
15.19.6 Cargo tanks shall be fitted with a visual andaudible high-level alarm which complies with 15.19.1 to15.19.5 and which indicates when the liquid level in the cargotank approaches the normal full condition.
15.19.7 A tank overflow-control system required by thissection shall:
.1 come into operation when the normal tankloading procedures fail to stop the tankliquid level exceeding the normal full con-dition;
.2 give a visual and audible tank-overflowalarm to the ship's operator; and
.3 .3 provide an agreed signal for sequentialshutdown of onshore pumps or valves orboth and of the ship's valves. The signal,as well as the pump and valve shutdown,may be dependent on operator's interven-tion. The use of shipboard automatic clos-ing valves shall be permitted only whenspecific approval has been obtained fromthe Register and the port State authorityconcerned.
15.19.8 The loading rate (LR) of the tank shall not ex-ceed:
tU
LR3600
= , [m3/h]
where:U = ullage volume, [m3], at operating signal
level;t = time, [s],needed from the initiating sig-
nal to fully stopping the cargo flow intothe tank, being the sum of times neededfor each step in sequential operationssuch as operator's responses to signals,stopping pumps and closing valves;
and shall also take into account the pipeline system designpressure.
15.19.9 The function of the level alarms, see 15.19.4,shall be capable of being tested by actual operation of levelgauges. When verification by actual operation is impractica-ble, suitable means to verify that the alarm circuits are in nor-mal condition, as shown in Figure 15.19.9-1, shall be pro-vided.
Figure 15.19.9-1Testing of level alarms
Independency of systems
15.19.10 In almost all cases a cargo which requires a highlevel alarm and overflow control also requires a closed gaug-ing device.
A cargo tank containing such a product thereforerequires three sensors:
.1 level gauging;
.2 high level alarm;
.3 overflow control.The sensing elements for .1, .2 and .3 shall be
separated although sensors for .2 and .3 (reed switches, floatchambers, electronic devices, etc.) may be contained in thesame tube.
15.19.11 Electronic, pneumatic and hydraulic circuits re-quired for sensors in 15.19.10.1 to .3 shall be independent ofeach other such that a fault on any one will not render either ofthe others inoperative.
15.19.12 Where processing units are used to give digitalor visual indication such as in a navigation bridge space, theindependency of circuitry shall be maintained at least beyondthis point. The power shall be supplied from distributionboards.
15.19.13 Where a cargo control room or a navigationbridge space containing a modular unit is envisaged, separatelevel indication and visual alarms must be provided for eachof the functions in 15.19.10.1 to .3. An audible alarm mustalso be provided but since this is not directional it need not beseparate. An audible alarm must also be arranged in the cargoarea. Where there is no cargo control room an audible and vis-ual alarm shall be arranged at the cargo control station.
15.19.14 Testing of sensors shall be arranged from out-side the tanks although entry into product clean tanks is notprecluded.
Simulation testing of electronic circuits or cir-cuits which are self-monitoring is acceptable.
15.20 ALKYL (C7-C9) NITRATES, ALLISOMERS
15.20.1 The carriage temperature of the cargo shall bemaintained below 100°C to prevent the occurrence of a self-sustaining, exothermic decomposition reaction.
15.20.2 The cargo may not be carried in independentpressure vessels permanently affixed to the vessel's deck un-less:
.1 the tanks are sufficiently insulated fromfire; and
.2 the vessel has a water deluge system forthe tanks such that the cargo temperature ismaintained below 100°C and the tem-perature rise in the tanks does not exceed1.5°C per hour for a fire of 650°C.
15.21 TEMPERATURE SENSORS
15.21.1 Temperature sensors shall be used to monitor thecargo pump temperature to detect overheating due to pumpfailures.
54 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
15.21.2 Cargo pumps and stripping pumps, installed incargo pump-rooms and driven by shafts passing throughpump-room bulkheads shall be fitted with temperature sensingdevices for bulkhead shaft glands, bearings and pump casings.
15.21.3 A continuos audible and visual alarm signalshall be initiated in the cargo control room or at the pumpcontrol station.
15.21.4 The temperature sensors shall be used on anytype of cargo pump, i.e. where cargo pumps are installed inconventional type cargo pump-rooms as well as on deepwellpumps.
15.21.5 The provisions of this section shall also applywhere specific reference is made in column o in the table ofChapter 17 (see 3.3.13.1).
RULES FOR THE CLASSIFICATION OF SHIPS 55PART 27
2009
16 OPERATIONALREQUIREMENTS
16.1 MAXIMUM ALLOWABLEQUANTITY OF CARGO PER TANK
16.1.1 The quantity of a cargo required to be carried ina type 1 ship shall not exceed 1,250 m3 in any one tank.
16.1.2 The quantity of cargo required to be carried in atype 2 ship shall not exceed 3,000 m3 in any one tank.
16.1.3 Tanks carrying liquids at ambient temperaturesshall be so loaded as to avoid the tank becoming liquid-fullduring the voyage, having due regard to the highest tempera-ture which the cargo may reach.
16.1.4 The minimum volume of the cargo tank shall bedetermined with regard to the maximum allowable quantity ofcargo specified in 16.1.1 and 16.1.2, as applicable, and in con-sideration of the thermal expansion of the cargo at temperatureof 45°C. Care shall be taken so as to ensure that the open endsof the venting system in the tank may not submerge in thecargo but in the gaseous phase under any trim condition of theship at sea.
16.1.5 Where the cargo tank temperature will possiblyexceed 45°C being affected by cargo heating system, theminimum volume of the cargo tank shall be determined on thebasis of such temperature.
16.1.6 For the additional requirements regarding nor-mal liquid-full condition of the cargo tank see 15.3.22,15.8.26.1, 15.14.7.1 and 15.19.6.
16.1.7 Attention is also drawn to the operation guide-lines contained in the ICS Tanker Safety Guide (chemicals).
16.2 CARGO INFORMATION
16.2.1 A copy of the IBC Code, or national regulationsincorporating the provisions of the IBC Code, shall be onboard every ship covered by this Part of the Rules.
16.2.2 Any cargo offered for bulk shipment shall be in-dicated in the shipping documents by the product name, underwhich it is listed in Chapter 17 or 18 of this Part of the Rulesor the latest edition of MEPC.2/Circular or under which it hasbeen provisionally assessed (see BLG.1/Circ.25). Where thecargo is a mixture, an analysis indicating the dangerous com-ponents contributing significantly to the total hazard of theproduct shall be provided, or a complete analysis if this isavailable. Such an analysis shall be certified by the manufac-turer or by an independent expert acceptable to the Admini-stration.
16.2.3 Information shall be on board, and available toall concerned, giving the necessary data for the safe carriageof the cargo in bulk. Such information shall include a cargostowage plan, to be kept in an accessible place, indicating allcargo on board, including each dangerous chemical carried:
.1 a full description of the physical andchemical properties, including reactivity,
necessary for the safe containment of thecargo;
.2 action to be taken in the event of spills orleaks;
.3 countermeasures against accidental per-sonal contact;
.4 fire-fighting procedures and fire-fightingmedia;
.5 procedures for cargo transfer, tank clean-ing, gas-freeing and ballasting; and
.6 for those cargoes required to be stabilizedor inhibited, the cargo shall be refused ifthe certificate required by these paragraphsis not supplied.
16.2.4 If sufficient information, necessary for the safetransportation of the cargo, is not available, the cargo shall berefused.
16.2.5 Cargoes which evolve highly toxic impercepti-ble vapours shall not be transported unless perceptible addi-tives are introduced into the cargo.
16.2.6 Where column o in the table of Chapter 17 refersto this paragraph, the cargo's viscosity at 20°C shall be speci-fied on a shipping document, and if the cargo's viscosity ex-ceeds 50 mPa.s at 20°C, the temperature at which the cargohas a viscosity of 50 mPa.s shall be specified in the shippingdocument (see MSC-MEPC.2/Circ.7).
16.2.7 Deleted.
16.2.8 Deleted.
16.2.9 Where column o in the table of Chapter 17 refersto this paragraph, the cargo's melting point shall be indicatedin the shipping document (see MSC-MEPC.2/Circ.7).
16.3 PERSONNEL TRAINING
16.3.1 All personnel shall be adequately trained in theuse of protective equipment and have basic training in the pro-cedures appropriate to their duties necessary under emergencyconditions.
16.3.2 Personnel involved in cargo operations shall beadequately trained in handling procedures.
16.3.3 Officers shall be trained in emergency proce-dures to deal with conditions of leakage, spillage or fire in-volving the cargo (see Medical First Aid Guide for Use in Ac-cidents Involving Dangerous Goods (MFAG)) and a sufficientnumber of them shall be instructed and trained in essentialfirst aid for cargoes carried (see the STCW Code, parts A andB).
16.4 OPENING OF AND ENTRY INTOCARGO TANKS
16.4.1 During handling and carriage of cargoes pro-ducing flammable and/or toxic vapours or when ballasting af-ter the discharge of such cargo, or when loading or unloadingcargo, cargo tank lids shall always be kept closed. With anyhazardous cargo, cargo tank lids, ullage and sighting ports andtank washing access covers shall be open only when neces-sary.
56 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
16.4.2 Personnel shall not enter cargo tanks, voidspaces around such tanks, cargo-handling spaces or other en-closed spaces unless:
.1 the compartment is free of toxic vapoursand not deficient in oxygen; or
.2 personnel wear breathing apparatus andother necessary protective equipment, andthe entire operation is under the close su-pervision of a responsible officer.
16.4.3 Personnel shall not enter such spaces when theonly hazard is of a purely flammable nature, except under theclose supervision of a responsible officer.
16.5 STOWAGE OF CARGO SAMPLES
16.5.1 Samples which have to be kept on board shall bestowed in a designated space situated in the cargo area or, ex-ceptionally, elsewhere, subject to the approval of the Register.(see Rules, Part 17 – Fire Protection, Table 3.1.2-1/item 3.
16.5.2 The stowage space shall be:.1 cell-divided in order to avoid shifting of
the bottles at sea;.2 made of material fully resistant to the dif-
ferent liquids intended to be stowed; and.3 equipped with adequate ventilation ar-
rangements.
16.5.3 Samples which react with each otherdangerously shall not be stowed close to each other.
16.5.4 Samples shall not be retained on board longerthan necessary.
16.5.5 When the stowage space is provided in the cargoarea, it shall not be located below the open deck. Access to thespace shall be from the weather deck. Ventilation of the spaceshall comply with the requirements in 12.2.
16.6 CARGOES NOT TO BE EXPOSEDTO EXCESSIVE HEAT
16.6.1 Where the possibility exists of a dangerous re-action of a cargo, such as polymerization, decomposition,thermal instability or evolution of gas, resulting from localoverheating of the cargo in either the tank or associated pipe-lines, such cargo shall be loaded and carried adequately segre-gated from other products whose temperature is sufficientlyhigh to initiate a reaction of such cargo (see 7.1.5.4).
16.6.2 Heating coils in tanks carrying this product shallbe blanked off or secured by equivalent means.
16.6.3 Heat-sensitive products shall not be carried indeck tanks, which are not insulated.
16.6.4 In order to avoid elevated temperatures, thiscargo shall not be carried in deck tanks.
RULES FOR THE CLASSIFICATION OF SHIPS 57PART 27
2009
17 SUMMARY OF MINIMUMREQUIREMENTS
17.1 GENERAL
17.1.1 The summary of general, special and operationalrequirements, “minimum requirements”, for the individualproducts to which the ships subject to this Part of the Rulesshall comply are shown in the Table 17.1.1-1.
17.1.2 Mixtures of noxious liquid substances presentingpollution hazards only, and which are assessed or provision-ally assessed under regulation 6.3 of MARPOL Annex II, maybe carried under the requirements of this Part of the Rules ap-plicable to the appropriate position of the entry in this chapterfor Noxious Liquid Substances, not otherwise specified(n.o.s.).
17.2 EXPLANATORY NOTES TO THETABLE 17.1.1-1
.1 Product name (column a):The product name shall be used in the shippingdocument for any cargo offered for bulk ship-ments. Any additional name may be includedin brackets after the product name (forexplanation see Chapter 19 of the IBC Code.The product names are identical with the na-mes given in IBC Code 2004, as amended. Insome cases, the product names are not identi-cal with the names given in previous issues ofthe Code.
.2 UN number (column b):Deleted
.3 Pollution Category (column c):The letter X, Y, Z means the Pollution Cate-gory assigned to each product under MARPOLAnnex II.
.4 Hazards (column d):“S“ means that the product is included in thisPart of the Rules because of its safety hazards;P“ means that the product is included in thisPart of the Rules because of its pollution haz-ards; andS/P“ means that the product is included in thisPart of the Rules because of both its safety andpollution hazards.
.5 Ship type (column e):.1 ship type 1 (2.1.2.1).2 ship type 2 (2.1.2.2).3 ship type 3 (2.1.2.3)
.6 Tank type (column f):1 independent tank (4.1.1)2 integral tank (4.1.2)G gravity tank (4.1.3)P pressure tank (4.1.4)
.7 Tank vents (column g):Cont.: controlled ventingOpen: open venting
.8 Tank environmental control (column h):Inert: inerting (9.1.2.1)Pad: liquid or gas padding (9.1.2.2)Dry: drying (9.1.2.3)Vent: natural or forced ventilation (9.1.2.4)No: no special requirements under this Partof the Rules
.9 Electrical equipment (column i)Temperature classes (i‘) T1 to T6- indicates no requirements
blank no informationApparatus group (i‘‘) IIA, IIB or IIC:- indicates no requirements
blank no informationFlash point (i‘‘‘)Yes: flashpoint exceeding 60°C (10.1.6)No: flashpoint not exceeding 60°C (10.1.6)NF: nonflammable product (10.1.6)
.10 Gauging (column j)O: open gauging (13.1.1.1)R: restricted gauging (13.1.1.2)C: closed gauging (13.1.1.3)
.11 Vapour detection (column k):F: flammable vapours (13.2)T: toxic vapours (13.2)No: indicates no special requirements under
this Part of the Rules.12 Fire protection (column ℓ):
A: alcohol-resistant foam or multi-purposefoam
B: regular foam; encompasses all foamsthat are not of an alcohol-resistant type,including fluoro-protein and aqueous-film-forming foam (AFFF)
C: water-sprayD: dry chemicalNo: no special requirements under this Part
of the Rules.13 Materials of construction (column m):
Deleted.14 Emergency equipment (column n)
Yes: see 14.3.1No: no special requirements under this Part
of the Rules.15 Special and operational requirements
(column o):When specific reference is made to Chapters15 and/or 16, these requirements shall be ad-ditional to the requirements in any other col-umn
Ele
ctri
cal
equi
pmen
t
Prod
uct N
ame
Pollution Category
Hazards
Ship type
Tank type
Tank vents
Tank environmentalcontrol
Class
Group
Flashpoint≥ 60
Gauging
Vapour detection
Fire protection
Emergency equipment
Spec
ial a
nd o
pera
tiona
lre
quir
emen
ts
Table 17.1.1-1
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Ace
tic a
cid
ZS/
P3
2GC
ont
No
T1II
AN
oR
FA
Yes
15.1
1.2,
15.
11.3
, 15.
11.4
,15
.11.
6, 1
5.11
.7, 1
5.11
.8,
15.1
9.6,
16.
2.9
Ace
tic a
nhyd
ride
ZS/
P2
2GC
ont
No
T2II
AN
oR
F-T
AY
es15
.11.
2, 1
5.11
.3, 1
5.11
.4,
15.1
1.6,
15.
11.7
, 15.
11.8
,15
.19.
6A
ceto
chlo
rX
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.2
.6,1
6.2.
9
Ace
tone
cya
nohy
drin
YS/
P2
2GC
ont
No
T1II
AY
esC
TA
Yes
15.1
2, 1
5.13
, 15.
17, 1
5.18
,15
.19,
16.
6.1,
16.
6.2,
16.
6.3
Ace
toni
trile
ZS/
P2
2GC
ont
No
T2II
AN
oR
F-T
AN
o15
.12,
15.
19.6
Ace
toni
trile
(Low
pur
ity g
rade
)Y
S/P
32G
Con
tN
oT1
IIA
No
RF-
TA
CN
o15
.12.
3, 1
5.12
.4, 1
5.19
.6A
cid
oil m
ixtu
re fr
om so
yabe
an, c
orn
(mai
ze)
and
sunf
low
er o
il re
finin
gY
S/P
22G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
Acr
ylam
ide
solu
tion
(50%
or l
ess)
YS/
P2
2GO
pen
No
NF
CN
oN
oN
o15
.12.
3, 1
5.13
, 15.
19.6
,16
.2.9
, 16.
6.1
Acr
ylic
aci
dY
S/P
22G
Con
tN
oT2
IIA
No
CF-
TA
Yes
15.1
1.2,
15.
11.3
, 15.
11.4
,15
.11.
6, 1
5.11
.7, 1
5.11
.8,
15.1
2.3,
15.
12.4
, 15.
13,
15.1
7, 1
5.19
, 16.
2.9,
16.
6.1
Acr
ylon
itrile
YS/
P2
2GC
ont
No
T1II
BN
oC
F-T
AY
es15
.12,
15.
13, 1
5.17
, 15.
19A
cryl
onitr
ile-S
tyre
ne c
opol
ymer
disp
ersio
n in
poly
ethe
r pol
yol
YP
32G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6
Adi
poni
trile
ZS/
P3
2GC
ont
No
IIB
Yes
RT
AN
o16
.2.9
Ala
chlo
r tec
hnic
al (9
0% o
r mor
e)X
S/P
22G
Ope
nN
oY
esO
No
AC
No
15.1
9.6,
16.
2.9
Alc
ohol
(C9-
C11
) pol
y (2
.5-9
) eth
oxyl
ate
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9A
lcoh
ol (C
6-C
17) (
seco
ndar
y) p
oly
(3-6
)et
hoxy
late
sY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
58 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Alc
ohol
(C6-
C17
) (se
cond
ary)
pol
y (7
-12)
etho
xyla
tes
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
Alc
ohol
(C12
-C16
) pol
y (1
-6) e
thox
ylat
esY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Alc
ohol
(C12
-C16
) pol
y (2
0+) e
thox
ylat
esY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Alc
ohol
(C12
-C16
) pol
y (7
-19)
eth
oxyl
ates
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9A
lcoh
ols (
C13
+)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
9A
lcoh
ols (
C8-
C11
), pr
imar
y, li
near
and
esse
ntia
lly li
near
YS/
P2
2GC
ont
No
--
Yes
RT
AB
CN
o15
.12.
3, 1
5.12
.4, 1
5.19
.6,
16.2
.6, 1
6.2.
9A
lcoh
ols (
C12
-C13
), pr
imar
y, li
near
and
esse
ntia
lly li
near
YS/
P2
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Alc
ohol
s (C
14-C
18),
prim
ary,
line
ar a
ndes
sent
ially
line
arY
S/P
22G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6
Alk
anes
(C6-
C9)
XP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Iso-
and
cyc
lo-a
lkan
es (C
10-C
11)
YP
32G
Con
tN
o-
-N
oR
FA
No
15.1
9.6
Iso-
and
cyc
lo-a
lkan
es (C
12+)
YP
32G
Con
tN
o-
-N
oR
FA
No
n-A
lkan
es (C
10+)
YP
32G
Con
tN
o-
-N
oR
FA
No
15.1
9.6
Alk
aryl
pol
yeth
ers (
C9-
C20
)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6A
lken
yl (C
11+)
am
ide
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9A
lken
yl (C
16-C
20) s
ucci
nic
anhy
drid
eZ
S/P
32G
Con
tN
oY
esC
TN
oY
es15
.12,
15.
17, 1
5.19
Alk
yl a
cryl
ate-
viny
lpyr
idin
e co
poly
mer
into
luen
eY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6, 1
6.2.
9
Alk
ylar
yl p
hosp
hate
mix
ture
s (m
ore
than
40%
Dip
heny
l tol
yl p
hosp
hate
, les
s tha
n 0.
02%
orth
o-iso
mer
s)X
S/P
12G
Con
tN
oT1
IIA
Yes
CT
AB
CN
o15
.12,
15.
17, 1
5.19
Alk
ylat
ed (C
4-C
9) h
inde
red
phen
ols
YS/
P2
2GO
pen
No
--
Yes
ON
oB
DN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9A
lkyl
benz
ene,
alk
ylin
dane
, alk
ylin
dene
mix
ture
(eac
h C
12-C
17)
ZP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6
Alk
yl b
enze
ne d
istil
latio
n bo
ttom
sY
S/P
22G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6A
lkyl
benz
ene
mix
ture
s (co
ntai
ning
at l
east
50%
of t
olue
ne)
YS/
P3
2GC
ont
No
T1II
AN
oC
F-T
AB
CN
o15
.12,
15.
17, 1
5.19
.6
Alk
yl (C
3-C
4) b
enze
nes
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Alk
yl (C
5-C
8) b
enze
nes
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6A
lkyl
(C9+
)ben
zene
sY
P3
2GO
pen
No
--
Yes
ON
oA
BN
oA
lkyl
(C11
-C17
) ben
zene
sulp
honi
c ac
idY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6
Alk
ylbe
nzen
e su
lpho
nic
acid
, sod
ium
salt
solu
tion
YS/
P2
2GO
pen
No
--
NF
ON
oN
oN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
RULES FOR THE CLASSIFICATION OF SHIPS 59PART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Alk
yl (C
12+)
dim
ethy
lam
ine
XS/
P1
2GCo
ntN
o-
-Y
esC
TB
CD
Yes
15.1
2, 1
5.17
, 15.
19A
lkyl
dith
ioca
rbam
ate
(C19
-C35
)Y
P3
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9A
lkyl
dith
ioth
iadi
azol
e (C
6-C
24)
YP
32G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6A
lkyl
este
r cop
olym
er (C
4-C
20)
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Alk
yl (C
8-C
10)/(
C12
-C14
):(40
% o
r les
s/60%
or m
ore)
pol
yglu
cosid
e so
lutio
n (5
5% o
r les
s)Y
P3
2GO
pen
No
Yes
ON
oN
oN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
Alk
yl (C
8-C
10)/(
C12
-C14
):(60
% o
r mor
e /
40%
or l
ess)
pol
yglu
cosi
de so
lutio
n (5
5% o
rle
ss)
YP
32G
Ope
nN
oY
esO
No
No
No
16.2
.6, 1
6.2.
9
Alk
yl (C
7-C
9) n
itrat
esY
S/P
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
15.
20, 1
6.6.
1,16
.6.2
, 16.
6.3
Alk
yl (C
7-C1
1) p
heno
l pol
y (4
-12)
eth
oxyl
ate
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6A
lkyl
(C8-
C40
) phe
nol s
ulph
ide
ZP
32G
Ope
nN
oY
esO
No
AB
No
Alk
yl (C
8-C
9) p
heny
lam
ine
in a
rom
atic
sol-
vent
sY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6
Alk
yl (C
9-C
15) p
heny
l pro
poxy
late
ZP
32G
Ope
nN
oY
esO
No
AB
No
Alk
yl (C
8-C
10) p
olyg
luco
side
solu
tion
(65%
or l
ess)
.Y
P3
2GO
pen
No
Yes
ON
oN
oN
o16
.2.6
Alk
yl (C
8-C
10)/(
C12
-C14
):(50
%/5
0%)
poly
gluc
osid
e so
lutio
n (5
5% o
r les
s)Y
P3
2GO
pen
No
Yes
ON
oN
oN
o16
.2.6
, 16.
2.9
Alk
yl (C
12-C
14)p
olyg
luco
side
solu
tion
(55%
or le
ss)
YP
32G
Ope
nN
oY
esO
No
No
No
15.1
9.6,
16.
2.9
Alk
yl(C
10-C
20),
(sat
urat
ed a
nd u
nsat
urat
ed)
phos
phite
YP
22G
Ope
nN
oY
esO
No
AN
o16
.2.9
Alk
yl su
lpho
nic
acid
este
r of p
heno
lY
P3
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6A
llyl a
lcoh
olY
S/P
22G
Con
tN
oT2
IIB
No
CF-
TA
Yes
15.1
2, 1
5.17
, 15.
19A
llyl c
hlor
ide
YS/
P2
2GC
ont
No
T2II
AN
oC
F-T
AY
es15
.12,
15.
17, 1
5.19
Alu
min
ium
sulp
hate
solu
tion
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
62-
(2-A
min
oeth
oxy)
eth
anol
ZS/
P3
2GO
pen
No
Yes
ON
oA
DN
o15
.19.
6A
min
oeth
yldi
etha
nola
min
e/A
min
oeth
ylet
hano
lam
ine
solu
tion
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
o16
.2.9
Am
inoe
thyl
eth
anol
amin
eZ
S/P
32G
Ope
nN
oT2
IIA
Yes
ON
oA
No
N-A
min
oeth
ylpi
pera
zine
ZS/
P3
2GC
ont
No
Yes
RT
AN
o15
.19.
6, 1
6.2.
92-
Am
ino-
2-m
ethy
l-1-p
ropa
nol
ZP
32G
Ope
nN
oY
esO
No
AN
oA
mm
onia
aqu
eous
(28%
or l
ess)
YS/
P2
2GC
ont
No
NF
RT
AB
CY
es15
.19.
6A
mm
oniu
m h
ydro
gen
phos
phat
e so
lutio
nZ
P3
2GO
pen
No
Yes
ON
oA
No
60 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Am
mon
ium
lign
osul
phon
ate
solu
tions
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
o16
.2.9
Am
mon
ium
nitr
ate
solu
tion
(93%
or l
ess)
ZS/
P2
1GO
pen
No
NF
ON
oN
oN
o15
.2, 1
5.11
.4, 1
5.11
.6, 1
5.18
,15
.19.
6, 1
6.2.
9A
mm
oniu
m p
olyp
hosp
hate
solu
tion
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
oA
mm
oniu
m su
lpha
te so
lutio
nZ
P3
2GO
pen
No
Yes
ON
oA
No
Am
mon
ium
sulp
hide
solu
tion
(45%
or l
ess)
YS/
P2
2GC
ont
No
No
CF-
TA
Yes
15.1
2, 1
5.17
, 15.
19, 1
6.6.
1,16
.6.2
, 16.
6.3
Am
mon
ium
thio
sulp
hate
solu
tion
(60%
or l
ess)
ZP
32G
Ope
nN
oN
FO
No
No
No
16.2
.9
Am
yl a
ceta
te (a
ll iso
mer
s)Y
P3
2GC
ont
No
No
RF
AN
o15
.19.
6n-
Am
yl a
lcoh
olZ
P3
2GC
ont
No
No
RF
AB
No
Am
yl a
lcoh
ol, p
rimar
yZ
P3
2GC
ont
No
No
RF
AB
No
sec-
Am
yl a
lcoh
olZ
P3
2GC
ont
No
No
RF
AB
No
tert-
Am
yl a
lcoh
olZ
P3
2GC
ont
No
No
RF
AN
ote
rt-A
myl
met
hyl e
ther
XP
22G
Con
tN
oT3
No
RF
AN
o15
.19.
6A
nilin
eY
S/P
22G
Con
tN
oT1
IIA
Yes
CT
AN
o15
.12,
15.
17, 1
5.19
Ary
lpol
yole
fins (
C11
-C50
)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9A
viat
ion
alky
late
s (C
8 pa
raffi
ns a
nd is
o-pa
raffi
ns B
PT 9
5 - 1
20°C
)X
P2
2GC
ont
No
No
RF
BN
o15
.19.
6
Bariu
m lo
ng c
hain
(C11
-C50
) alk
aryl
sulp
ho-
nate
YS/
P2
2GO
pen
No
Yes
ON
oA
DN
o15
.12.
3, 1
5.19
, 16.
2.6,
16.2
.9B
enze
ne a
nd m
ixtu
res h
avin
g 10
% b
enze
ne o
rm
ore
(i)Y
S/P
32G
Con
tN
oT1
IIA
No
CF-
TA
BN
o15
.12.
1, 1
5.17
, 15.
19.6
,16
.2.9
Ben
zene
sulp
hony
l chl
orid
eZ
S/P
32G
Con
tN
oY
esR
TA
DN
o15
.19.
6, 1
6.2.
9B
enze
netri
carb
oxyl
ic a
cid,
trio
ctyl
este
rY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6B
enzy
l ace
tate
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6B
enzy
l alc
ohol
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6B
enzy
l chl
orid
eY
S/P
22G
Con
tN
oT1
IIA
Yes
CT
AB
Yes
15.1
2, 1
5.13
, 15.
17, 1
5.19
Bra
ke fl
uid
base
mix
: Pol
y(2-
8) a
lkyl
ene
(C2-
C3)
gly
cols
/ Pol
yalk
ylen
e (C
2-C
10) g
lyco
lsm
onoa
lkyl
(C1-
C4)
eth
ers a
nd th
eir b
orat
ees
ters
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
o
Bro
moc
hlor
omet
hane
ZS/
P3
2GC
ont
No
NF
RT
No
No
But
ene
olig
omer
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6B
utyl
ace
tate
(all
isom
ers)
YP
32G
Con
tN
oN
oR
FA
No
15.1
9.6
RULES FOR THE CLASSIFICATION OF SHIPS 61PART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
But
yl a
cryl
ate
(all
isom
ers)
YS/
P2
2GC
ont
No
T2II
BN
oR
F-T
AN
o15
.13,
15.
19.6
, 16.
6.1,
16.6
.2te
rt-B
utyl
alc
ohol
ZP
32G
Con
tN
oN
oR
FA
No
But
ylam
ine
(all
isom
ers)
YS/
P2
2GC
ont
No
No
RF-
TA
Yes
15.1
2, 1
5.17
, 15.
19.6
But
ylbe
nzen
e (a
ll is
omer
s)X
P2
2GC
ont
No
No
RF
AN
o15
.19.
6B
utyl
ben
zyl p
htha
late
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6B
utyl
but
yrat
e (a
ll is
omer
s)Y
P3
2GC
ont
No
No
RF
AN
o15
.19.
6B
utyl
/Dec
yl/C
etyl
/Eic
osyl
met
hacr
ylat
em
ixtu
reY
S/P
22G
Con
tN
oY
esR
No
AD
No
15.1
3, 1
5.19
.6, 1
6.6.
1, 1
6.6.
2
But
ylen
e gl
ycol
ZP
32G
Ope
nN
oY
esO
No
AN
o
1,2-
Buty
lene
oxi
deY
S/P
32G
Con
tIn
ert
T2II
BN
oR
FA
CN
o
15.8
.1 to
15.
8.7,
15.
8.12
,15
.8.1
3, 1
5.8.
16, 1
5.8.
17,
15.8
.18,
15.
8.19
, 15.
8.21
,15
.8.2
5, 1
5.8.
27, 1
5.8.
29,
15.1
9.6
n-B
utyl
eth
erY
S/P
32G
Con
tIn
ert
T4II
BN
oR
F-T
AN
o15
.4.6
, 15.
12, 1
5.19
.6
But
yl m
etha
cryl
ate
ZS/
P3
2GC
ont
No
IIA
No
RF-
TA
DN
o15
.13,
15.
19.6
, 16.
6.1,
16.6
.2n-
But
yl p
ropi
onat
eY
P3
2GC
ont
No
No
RF
AN
o15
.19.
6B
utyr
alde
hyde
(all
isom
ers)
YS/
P3
2GC
ont
No
T3II
AN
oR
F-T
AN
o15
.19.
6
But
yric
aci
dY
S/P
32G
Con
tN
oY
esR
No
AN
o15
.11.
2, 1
5.11
.3, 1
5.11
.4,
15.1
1.6,
15.
11.7
, 15.
11.8
,15
.19.
6ga
mm
a-Bu
tyro
lact
one
YP
32G
Ope
nN
oY
esO
No
AB
No
15.1
9.6
Cal
cium
car
bona
te sl
urry
ZP
32G
Ope
nN
oY
esO
No
AB
No
Cal
cium
hyd
roxi
de sl
urry
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
o16
.2.9
Cal
cium
hyp
ochl
orite
solu
tion
(15%
or l
ess)
YS/
P2
2GC
ont
No
NF
RN
oN
oN
o15
.19.
6C
alci
um h
ypoc
hlor
ite so
lutio
n (m
ore
than
15%
)X
S/P
12G
Con
tN
oN
FR
No
No
No
15.1
9, 1
6.2.
9
Cal
cium
lign
osul
phon
ate
solu
tions
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
o16
.2.9
Calc
ium
long
-cha
in a
lkar
yl su
lpho
nate
(C11
-C50
)Z
P3
2GO
pen
No
--
Yes
ON
oA
No
16.2
.9
Cal
cium
long
-cha
in a
lkyl
(C5-
C10
) phe
nate
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6Ca
lciu
m lo
ng-c
hain
alk
yl(C
11-C
40) p
hena
teY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6
Cal
cium
long
-cha
in a
lkyl
phe
nate
sulp
hide
(C8-
C40
)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
62 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Cal
cium
long
-cha
in a
lkyl
salic
ylat
e (C
13+)
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6
Cal
cium
nitr
ate/
Mag
nesiu
m n
itrat
e/Po
tass
ium
chlo
ride
solu
tion
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
o16
.2.9
epsil
on-C
apro
lact
am (m
olte
n or
aqu
eous
solu
tions
)Z
P3
2GO
pen
No
Yes
ON
oA
No
Carb
olic
oil
YS/
P2
2GC
ont
No
Yes
CF-
TA
No
15.1
2, 1
5.19
.6, 1
6.2.
9
Car
bon
disu
lphi
deY
S/P
21G
Con
tPa
d+in
ert
T6II
CN
oC
F-T
CY
es15
.3, 1
5.12
, 15.
19
Car
bon
tetra
chlo
ride
YS/
P2
2GC
ont
No
NF
CT
No
Yes
15.1
2, 1
5.17
, 15.
19.6
Cas
hew
nut
shel
l oil
(unt
reat
ed)
YS
22G
Con
tN
oY
esR
TA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9C
asto
r oil
YS/
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
Cety
l/Eic
osyl
met
hacr
ylat
e m
ixtu
reY
S/P
22G
Ope
nN
oY
esO
No
AD
No
15.1
3, 1
5.19
.6, 1
6.2.
9.16
.6.1
, 16.
6.2
Chl
orin
ated
par
affin
s (C
10-C
13)
XP
12G
Ope
nN
oY
esO
No
AN
o15
.19,
16.
2.6
Chl
orin
ated
par
affin
s (C
14-C
17) (
with
50%
chlo
rine
or m
ore,
and
less
than
1%
C13
or
shor
ter c
hain
s)X
P1
2GO
pen
No
--
Yes
ON
oA
No
15.1
9
Chl
oroa
cetic
aci
d (8
0% o
r les
s)Y
S/P
22G
Con
tN
oN
FC
No
No
No
15.1
1.2,
15.
11.4
, 15.
11.6
,15
.11.
7, 1
5.11
.8, 1
5.12
.3,
15.1
9, 1
6.2.
9C
hlor
oben
zene
YS/
P2
2GC
ont
No
T1II
AN
oR
F-T
AB
No
15.1
9.6
Chl
orof
orm
YS/
P3
2GC
ont
No
NF
RT
No
Yes
15.1
2, 1
5.19
.6C
hlor
ohyd
rins (
crud
e)Y
S/P
22G
Con
tN
oII
AN
oC
F-T
AN
o15
.12,
15.
194-
Chl
oro-
2-m
ethy
lphe
noxy
acet
ic a
cid,
dim
ethy
lam
ine
salt
solu
tion
YP
22G
Ope
nN
oN
FO
No
No
No
15.1
9.6,
16.
2.9
o-C
hlor
onitr
oben
zene
YS/
P2
2GC
ont
No
Yes
CT
AB
DN
o15
.12,
15.
17, 1
5.18
,15.
19,
16.2
.6, 1
6.2.
91-
(4-C
hlor
ophe
nyl)-
4,4-
dim
ethy
l-pen
tan-
3-on
eY
P2
2GO
pen
No
Yes
ON
oA
BD
No
15.1
9.6,
16.
2.6,
16.
2.9
2-or
3-C
hlor
opro
pion
ic a
cid
ZS/
P3
2GO
pen
No
Yes
ON
oA
No
15.1
1.2,
15.
11.3
, 15.
11.4
,15
.11.
6, 1
5.11
.7, 1
5.11
.8,
16.2
.9
Chl
oros
ulph
onic
aci
dY
S/P
12G
Con
tN
oN
FC
TN
oY
es
15.1
1.2,
15.
11.3
, 15.
11.4
,15
.11.
5, 1
5.11
.6, 1
5.11
.7,
15.1
1.8,
15.
12, 1
5.16
.2,
15.1
9m
-Chl
orot
olue
neY
S/P
22G
Con
tN
oN
oR
F-T
AB
No
15.1
9.6
o-C
hlor
otol
uene
YS/
P2
2GC
ont
No
No
RF-
TA
BN
o15
.19.
6
RULES FOR THE CLASSIFICATION OF SHIPS 63PART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
p-C
hlor
otol
uene
YS/
P2
2GC
ont
No
No
RF-
TA
BN
o15
.19.
6, 1
6.2.
9C
hlor
otol
uene
s (m
ixed
isom
ers)
YS/
P2
2GC
ont
No
No
RF-
TA
BN
o15
.19.
6C
holin
e ch
lorid
e so
lutio
nsZ
P3
2GO
pen
No
Yes
ON
oA
No
Citr
ic a
cid
(70%
or l
ess)
ZP
32G
Ope
nN
oY
esO
No
AN
oC
oal t
arX
S/P
22G
Con
tN
oT2
IIA
Yes
RN
oB
DN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9C
oal t
ar n
apht
ha so
lven
tY
S/P
22G
Con
tN
oT3
IIA
No
RF-
TA
DN
o15
.19.
6, 1
6.2.
9Co
al ta
r pitc
h (m
olte
n)X
S/P
21G
Con
tN
oT2
IIA
Yes
RN
oB
DN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9C
ocoa
but
ter
YS/
P2)
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9C
ocon
ut o
ilY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Coc
onut
oil
fatty
aci
dY
S/P
22G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9C
ocon
ut o
il fa
tty a
cid
met
hyl e
ster
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6C
oppe
r sal
t of l
ong
chai
n (C
17+)
alk
anoi
cac
idY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Cor
n oi
lY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Cot
ton
seed
oil
YS/
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
Creo
sote
(coa
l tar
)X
S/P
22G
Con
tN
oT2
IIA
Yes
RT
AD
No
15.1
2.3,
15.
12.4
, 15.
19.6
,16
.2.6
, 16.
2.9
Cres
ols (
all i
som
ers)
YS/
P2
2GO
pen
No
T1II
AY
esO
No
AB
No
15.1
9.6,
16.
2.9
Cre
sylic
aci
d, d
ephe
noliz
edY
S/P
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6
Cre
sylic
aci
d, so
dium
salt
solu
tion
YS/
P2
2GO
pen
No
Yes
ON
oN
oN
o15
.19.
6, 1
6.2.
9C
roto
nald
ehyd
eY
S/P
22G
Con
tN
oT3
IIB
No
RF-
TA
Yes
15.1
2, 1
5.17
, 15.
19.6
1,5,
9-Cy
clod
odec
atrie
neX
S/P
12G
Con
tN
oY
esR
TA
No
15.1
3, 1
5.19
, 16.
6.1,
16.
6.2
Cycl
ohep
tane
XP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Cycl
ohex
ane
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6,
16.
2.9
Cycl
ohex
anol
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.9
Cycl
ohex
anon
eZ
S/P
32G
Con
tN
oT2
IIA
No
RF-
TA
No
15.1
9.6
Cycl
ohex
anon
e, C
yclo
hexa
nol m
ixtu
reY
S/P
32G
Con
tN
oY
esR
F-T
AN
o15
.19.
6Cy
cloh
exyl
ace
tate
YP
32G
Con
tN
oN
oR
FA
No
15.1
9.6
Cycl
ohex
ylam
ine
YS/
P3
2GC
ont
No
T3II
AN
oR
F-T
AC
No
15.1
9.6
1,3-
Cycl
open
tadi
ene
dim
er (m
olte
n)Y
P2
2GC
ont
No
No
RF
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Cy
clop
enta
neY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6Cy
clop
ente
neY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6p-
Cym
ene
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Dec
ahyd
rona
phth
alen
eY
P2
2GC
ont
No
No
RF
AB
No
15.1
9.6
64 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Dec
anoi
c ac
idX
P2
2GO
pen
No
Yes
ON
oA
No
16.2
.9D
ecen
eX
P2
2GC
ont
No
No
RF
AN
o15
.19.
6D
ecyl
acr
ylat
eX
S/P
12G
Ope
nN
oT3
IIA
Yes
ON
oA
CD
No
15.1
3, 1
5.19
, 16.
6.1,
16.
6.2
Dec
yl a
lcoh
ol (a
ll iso
mer
s)Y
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9(
e)D
ecyl
oxyt
etra
hydr
othi
ophe
ne d
ioxi
deX
S/P
22G
Con
tN
oY
esR
TA
No
15.1
9.6,
16.
2.9
Dia
ceto
ne a
lcoh
olZ
P3
2GC
ont
No
No
RF
AN
oD
ialk
yl (C
8-C
9) d
iphe
nyla
min
esZ
P3
2GO
pen
No
Yes
ON
oA
BN
oD
ialk
yl (C
7-C
13) p
htha
late
sX
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6D
ibro
mom
etha
neY
S/P
22G
Con
tN
oN
FR
TN
oN
o15
.12.
3, 1
5.19
Dib
utyl
amin
eY
S/P
32G
Con
tN
oT2
IIA
No
RF-
TA
CD
No
15.1
9.6
Dib
utyl
hyd
roge
n ph
osph
onat
eY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
2,6-
Di-t
ert-b
utyl
phen
olX
P1
2GO
pen
No
--
Yes
ON
oA
BC
DN
o15
.19,
16.
2.9
Dib
utyl
pht
hala
teX
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Dic
hlor
oben
zene
(all
isom
ers)
XS/
P2
2GC
ont
No
T1II
AY
esR
TA
BD
No
15.1
9.6
3,4-
Dic
hlor
o-1-
bute
neY
S/P
22G
Con
tN
oN
oC
F-T
AB
CY
es15
.12.
3, 1
5.17
, 15.
19.6
1,1
-Dic
hlor
oeth
ane
ZS/
P3
2GC
ont
No
T2II
AN
oR
F-T
AY
es15
.19.
6D
ichl
oroe
thyl
eth
erY
S/P
22G
Con
tN
oT2
IIA
No
RF-
TA
No
15.1
9.6
1,6-
Dic
hlor
ohex
ane
YS/
P2
2GC
ont
No
No
RT
AB
No
15.1
9.6
2,2'
-Dic
hlor
oiso
prop
yl e
ther
YS/
P2
2GC
ont
No
Yes
RT
AC
DN
o15
.12,
15.
17, 1
5.19
Dic
hlor
omet
hane
YS/
P3
2GC
ont
No
T1II
AY
esR
TN
oN
o15
.19.
62,
4-D
ichl
orop
heno
lY
S/P
22G
Con
tD
ryY
esR
TA
No
15.1
9.6,
16.
2.6,
16.
2.9
2,4-
Dic
hlor
ophe
noxy
acet
ic a
cid,
diet
hano
lam
ine
salt
solu
tion
YS/
P3
2GO
pen
No
NF
ON
oN
oN
o15
.19.
6, 1
6.2.
9
2,4-
Dic
hlor
ophe
noxy
acet
ic a
cid,
dim
ethy
lam
ine
salt
solu
tion
(70%
or l
ess)
YS/
P3
2GO
pen
No
NF
ON
oN
oN
o15
.19.
6, 1
6.2.
9
2,4-
Dic
hlor
ophe
noxy
acet
ic a
cid,
triis
opro
pano
lam
ine
salt
solu
tion
YS/
P3
2GO
pen
No
NF
ON
oN
oN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
1,1-
Dic
hlor
opro
pane
YS/
P2
2GC
ont
No
No
RF-
TA
BN
o15
.12,
15.
19.6
1,2-
Dic
hlor
opro
pane
YS/
P2
2GC
ont
No
T1II
AN
oR
F-T
AB
No
15.1
2, 1
5.19
.61,
3-D
ichl
orop
rope
neX
S/P
22G
Con
tN
oT2
IIA
No
CF-
TA
BY
es15
.12,
15.
17, 1
5.18
, 15.
19D
ichl
orop
rope
ne/D
ichl
orop
ropa
ne m
ixtu
res
XS/
P2
2GC
ont
No
No
CF-
TA
BD
Yes
15.1
2, 1
5.17
, 15.
18, 1
5.19
2,2-
Dic
hlor
opro
pion
ic a
cid
YS/
P3
2GC
ont
Dry
Yes
RN
oA
No
15.1
1.2,
15.
11.4
, 15.
11.6
,15
.11.
7, 1
5.11
.8, 1
5.19
.6,
16.2
.9D
ieth
anol
amin
eY
S/P
32G
Ope
nN
oT1
IIA
Yes
ON
oA
No
16.2
.6, 1
6.2.
9
RULES FOR THE CLASSIFICATION OF SHIPS 65PART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Die
thyl
amin
eY
S/P
32G
Con
tN
oT2
IIA
No
RF-
TA
Yes
15.1
2, 1
5.19
.6D
ieth
ylam
inoe
than
olY
S/P
22G
Con
tN
oT2
IIA
No
RF-
TA
CN
o15
.19.
62,
6-D
ieth
ylan
iline
YS/
P3
2GO
pen
No
Yes
ON
oB
CD
No
15.1
9.6,
16.
2.9
Die
thyl
benz
ene
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Die
thyl
ene
glyc
ol d
ibut
yl e
ther
ZS/
P3
2GO
pen
No
--
Yes
ON
oA
No
Die
thyl
ene
glyc
ol d
ieth
yl e
ther
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
oD
ieth
ylen
e gl
ycol
pht
hala
teY
P3
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6
Die
thyl
enet
riam
ine
YS/
P3
2GO
pen
No
T2II
AY
esO
No
AN
o15
.19.
6D
ieth
ylen
etria
min
epen
taac
etic
aci
d,pe
ntas
odiu
m sa
lt so
lutio
nZ
P3
2GO
pen
No
--
Yes
ON
oA
No
Die
thyl
eth
erZ
S/P
21G
Con
tIn
ert
T4II
BN
oC
F-T
AY
es15
.4, 1
5.14
, 15.
19D
i-(2-
ethy
lhex
yl) a
dipa
teY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6D
i-(2-
ethy
lhex
yl) p
hosp
horic
aci
dY
S/P
22G
Ope
nN
oY
esO
No
AD
No
15.1
9.6
Die
thyl
pht
hala
teY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Die
thyl
sulp
hate
YS/
P2
2GC
ont
No
Yes
CT
AN
o15
.19.
6D
igly
cidy
l eth
er o
f bisp
heno
l AX
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Dig
lyci
dyl e
ther
of b
isphe
nol F
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6D
ihep
tyl p
htha
late
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6
Di-n
-hex
yl a
dipa
teX
P1
2GO
pen
No
Yes
ON
oA
No
15.1
9D
ihex
yl p
htha
late
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6
Diis
obut
ylam
ine
YS/
P2
2GC
ont
No
No
RF-
TA
CD
No
15.1
2.3,
15.
19.6
Diis
obut
ylen
eY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6D
iisob
utyl
ket
one
YP
32G
Con
tN
oN
oR
FA
No
15.1
9.6
Diis
obut
yl p
htha
late
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6D
iison
onyl
adi
pate
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6D
iisoo
ctyl
pht
hala
teY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6D
iisop
ropa
nola
min
eZ
S/P
32G
Ope
nN
oT2
IIA
Yes
ON
oA
No
16.2
.9D
iisop
ropy
lam
ine
YS/
P2
2GC
ont
No
T2II
AN
oC
F-T
AY
es15
.12,
15.
19D
iisop
ropy
lben
zene
(all
isom
ers)
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6D
iisop
ropy
lnap
htha
lene
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6N
,N-D
imet
hyla
ceta
mid
eZ
S/P
32G
Con
tN
o-
-Y
esC
TA
CD
No
15.1
2, 1
5.17
N,N
-Dim
ethy
lace
tam
ide
solu
tion
(40%
or l
ess)
ZS/
P3
2GC
ont
No
Yes
RT
BN
o15
.12.
1, 1
5.17
66 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Dim
ethy
l adi
pate
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9D
imet
hyla
min
e so
lutio
n (4
5% o
r les
s)Y
S/P
32G
Con
tN
oT2
IIA
No
RF-
TA
CD
No
15.1
2, 1
5.19
.6D
imet
hyla
min
e so
lutio
n (g
reat
er th
an 4
5% b
utno
t gre
ater
than
55%
)Y
S/P
22G
Con
tN
oN
oC
F-T
AC
DY
es15
.12,
15.
17, 1
5.19
Dim
ethy
lam
ine
solu
tion
(gre
ater
than
55%
but
not g
reat
er th
an 6
5%)
YS/
P2
2GC
ont
No
No
CF-
TA
CD
Yes
15.1
2, 1
5.14
, 15.
17, 1
5.19
N,N
-Dim
ethy
lcyc
lohe
xyla
min
eY
S/P
22G
Con
tN
oN
oR
F-T
AC
No
15.1
2, 1
5.17
, 15.
19.6
Dim
ethy
l disu
lphi
deY
S/P
22G
Con
tN
oT3
IIA
No
RF-
TB
No
15.1
2.3,
15.
12.4
, 15.
19.6
N,N
-Dim
ethy
ldod
ecyl
amin
eX
S/P
12G
Ope
nN
oY
esO
No
BN
o15
.19
Dim
ethy
leth
anol
amin
eY
S/P
32G
Con
tN
oT3
IIA
No
RF-
TA
DN
o15
.19.
6D
imet
hylfo
rmam
ide
YS/
P3
2GC
ont
No
T2II
AN
oR
F-T
AD
No
15.1
9.6
Dim
ethy
l glu
tara
teY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Dim
ethy
l hyd
roge
n ph
osph
iteY
S/P
32G
Con
tN
oY
esR
TA
DN
o15
.12.
1, 1
5.19
.6D
imet
hyl o
ctan
oic
acid
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9D
imet
hyl p
htha
late
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9D
imet
hylp
olys
iloxa
neY
P3
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
62,
2-D
imet
hylp
ropa
ne-1
,3-d
iol
(mol
ten
or so
lutio
n)Z
P3
2GO
pen
No
--
Yes
ON
oA
BN
o16
.2.9
Dim
ethy
l suc
cina
teY
P3
2GO
pen
No
Yes
ON
oA
No
16.2
.9
Din
itrot
olue
ne (m
olte
n)X
S/P
22G
Con
tN
oY
esC
TA
No
15.1
2, 1
5.17
, 15.
19, 1
5.21
,16
.2.6
, 16.
2.9,
16.
6.4
Din
onyl
pht
hala
teY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6
Dio
ctyl
pht
hala
teX
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
61,
4-D
ioxa
neY
S/P
22G
Con
tN
oT2
IIB
No
CF-
TA
No
15.1
2, 1
5.19
, 16.
2.9
Dip
ente
neY
P3
2GC
ont
No
No
RF
AN
o15
.19.
6D
iphe
nyl
XP
22G
Ope
nN
oY
esO
No
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9D
iphe
nyla
min
e (m
olte
n)Y
P2
2GO
pen
No
--
Yes
ON
oB
DN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9D
iphe
nyla
min
e, re
actio
n pr
oduc
t with
2,2
,4-
Trim
ethy
lpen
tene
YS/
P1
2GO
pen
No
Yes
ON
oA
No
15.1
9, 1
6.2.
6
Dip
heny
lam
ines
, alk
ylat
edY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Dip
heny
l/Dip
heny
l eth
er m
ixtu
res
XP
22G
Ope
nN
oY
esO
No
BN
o15
.19.
6, 1
6.2.
9D
iphe
nyl e
ther
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9D
iphe
nyl e
ther
/Dip
heny
l phe
nyl e
ther
mix
ture
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9
Dip
heny
lmet
hane
diis
ocya
nate
YS/
P2
2GC
ont
Dry
--
Yes
(a)
CT(
a)A
BC
(b) D
No
15.1
2, 1
5.16
.2, 1
5.17
,15
.19.
6, 1
6.2.
6, 1
6.2.
9
2009
RULES FOR THE CLASSIFICATION OF SHIPS 67PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Dip
heny
lol p
ropa
ne-e
pich
loro
hydr
in re
sins
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9D
i-n-p
ropy
lam
ine
YS/
P2
2GC
ont
No
No
RF-
TA
No
15.1
2.3,
15.
19.6
Dip
ropy
lene
gly
col
ZP
32G
Ope
nN
oY
esO
No
AN
oD
ithio
carb
amat
e es
ter (
C7-
C35
)X
P2
2GO
pen
No
Yes
ON
oA
DN
o15
.19.
6, 1
6.2.
9D
itrid
ecyl
adi
pate
YS/
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6
Ditr
idec
yl p
htha
late
YS/
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6
Diu
ndec
yl p
htha
late
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Dod
ecan
e (a
ll iso
mer
s)Y
P2
2GC
ont
No
No
RF
AB
No
15.1
9.6
tert-
Dod
ecan
ethi
olX
S/P
12G
Con
tN
o-
-Y
esC
TA
BD
Yes
15.1
2, 1
5.17
, 15.
19D
odec
ene
(all
isom
ers)
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6D
odec
yl a
lcoh
olY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Dod
ecyl
amin
e/Te
trade
cyla
min
e m
ixtu
reY
S/P
22G
Con
tN
oY
esR
TA
DN
o15
.19.
6, 1
6.2.
9D
odec
ylbe
nzen
eZ
P3
2GO
pen
No
Yes
ON
oA
BN
oD
odec
yl d
iphe
nyl e
ther
disu
lpho
nate
solu
tion
XS/
P2
2GO
pen
No
NF
ON
oN
oN
o15
.19.
6, 1
6.2.
6D
odec
yl h
ydro
xypr
opyl
sulp
hide
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6D
odec
yl m
etha
cryl
ate
ZS/
P3
2GO
pen
No
Yes
ON
oA
No
15.1
3
Dod
ecyl
/Oct
adec
yl m
etha
cryl
ate
mix
ture
YS/
P3
2GO
pen
No
--
Yes
ON
oA
No
15.1
3, 1
5.19
.6, 1
6.2.
6,16
.6.1
, 16.
6.2
Dod
ecyl
/Pen
tade
cyl m
etha
cryl
ate
mix
ture
YS/
P2
2GO
pen
No
Yes
ON
oA
DN
o15
.13,
15.
19.6
, 16.
6.1,
16.6
.2D
odec
yl p
heno
lX
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.6
Dod
ecyl
Xyl
ene
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6
Dril
ling
brin
es (c
onta
inin
g zi
nc sa
lts)
XP
22G
Ope
nN
oY
esO
No
No
No
15.1
9.6
Dril
ling
brin
es, i
nclu
ding
: cal
cium
bro
mid
eso
lutio
n, c
alci
um c
hlor
ide
solu
tion
and
sodi
-um
chl
orid
e so
lutio
nZ
P3
2GO
pen
No
Yes
ON
oA
No
Epic
hlor
ohyd
rinY
S/P
22G
Con
tN
oII
BN
oC
F-T
AY
es15
.12,
15.
17, 1
5.19
Etha
nola
min
eY
S/P
32G
Ope
nN
oT2
IIA
Yes
OF-
TA
No
16.2
.92-
Etho
xyet
hyl a
ceta
teY
P3
2GC
ont
No
No
RF
AN
o15
.19.
6Et
hoxy
late
d lo
ng c
hain
(C16
+)al
kylo
xyal
kyla
min
eY
S/P
22G
Ope
nN
o-
-Y
esO
No
AB
No
15.1
9.6,
16.
2.9
Ethy
l ace
tate
ZP
32G
Con
tN
oN
oR
FA
BN
oEt
hyl a
ceto
acet
ate
ZP
32G
Ope
nN
oY
esO
No
AN
o
Ethy
l acr
ylat
eY
S/P
22G
Con
tN
oT2
IIB
No
RF-
TA
Yes
15.1
3, 1
5.19
.6, 1
6.6.
1,16
.6.2
68 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Ethy
lam
ine
YS/
P2
1GC
ont
No
T2II
AN
oC
F-T
CD
Yes
15.1
2,15
.14,
15.1
9.6
Ethy
lam
ine
solu
tions
(72%
or l
ess)
YS/
P2
2GC
ont
No
No
CF-
TA
CY
es15
.12,
15.
14, 1
5.17
, 15.
19Et
hyl a
myl
ket
one
YP
32G
Con
tN
oN
oR
FA
No
15.1
9.6
Ethy
lben
zene
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Ethy
l ter
t-but
yl e
ther
YP
32G
Con
tN
oN
oR
FA
No
15.1
9.6
Ethy
l but
yrat
eY
P3
2GC
ont
No
No
RF
AN
o15
.19.
6Et
hylc
yclo
hexa
neY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6N
-Eth
ylcy
cloh
exyl
amin
eY
S/P
22G
Con
tN
oN
oR
F-T
AN
o15
.19.
6S-
Ethy
l dip
ropy
lthio
carb
amat
eY
P2
2GO
pen
No
Yes
ON
oA
No
16.2
.9Et
hyle
ne c
hlor
ohyd
rinY
S/P
22G
Con
tN
oT2
IIA
No
CF-
TA
DY
es15
.12,
15.
17, 1
5.19
Ethy
lene
cya
nohy
drin
YS/
P3
2GO
pen
No
IIB
Yes
ON
oA
No
15.1
9.6
Ethy
lene
diam
ine
YS/
P2
2GC
ont
No
T2II
AN
oR
F-T
AN
o15
.19.
6, 1
6.2.
9Et
hyle
nedi
amin
etet
raac
etic
aci
d, te
traso
dium
salt
solu
tion
YS/
P3
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6
Ethy
lene
dib
rom
ide
YS/
P2
2GC
ont
No
NF
CT
No
Yes
15.1
2, 1
5.19
.6, 1
6.2.
9Et
hyle
ne d
ichl
orid
eY
S/P
22G
Con
tN
oT2
IIA
No
RF-
TA
BN
o15
.19
Ethy
lene
gly
col
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6Et
hyle
ne g
lyco
l ace
tate
YP
32G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6Et
hyle
ne g
lyco
l but
yl e
ther
ace
tate
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6Et
hyle
ne g
lyco
l dia
ceta
teY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Ethy
lene
gly
col m
ethy
l eth
er a
ceta
teY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Ethy
lene
gly
col m
onoa
lkyl
eth
ers
YS/
P3
2GC
ont
No
No
RF
AN
o15
.19.
6, 1
6.2.
9Et
hyle
ne g
lyco
l phe
nyl e
ther
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
o16
.2.9
Ethy
lene
gly
col p
heny
l eth
er/D
ieth
ylen
egl
ycol
phe
nyl e
ther
mix
ture
ZP
32G
Ope
nN
o-
-Y
esO
No
AN
o16
.2.9
Ethy
lene
oxi
de/P
ropy
lene
oxi
de m
ixtu
re w
ithan
eth
ylen
e ox
ide
cont
ent o
f not
mor
e th
an30
% b
y m
ass
YS/
P2
1GC
ont
Iner
tT2
IIB
No
CF-
TA
CN
o15
.8, 1
5.12
,15.
14,1
5.19
Ethy
lene
-Vin
yl a
ceta
te c
opol
ymer
(em
ulsio
n)Y
P3
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Ethy
l-3 –
etho
xypr
opio
nate
YP
32G
Con
tN
oN
oR
No
AN
o15
.19.
62-
Ethy
lhex
anoi
c ac
idY
P3
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
62-
Ethy
lhex
yl a
cryl
ate
YS/
P3
2GO
pen
No
T3II
BY
esO
No
AN
o15
.13,
15.
19.6
, 16.
6.1,
16.
6.2
2-Et
hylh
exyl
amin
eY
S/P
22G
Con
tN
oN
oR
F-T
AN
o15
.12,
15.
19.6
2-Et
hyl-2
-(hy
drox
ymet
hyl)p
ropa
ne-1
,3-d
iol
(C8-
C10
) est
erY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
2009
RULES FOR THE CLASSIFICATION OF SHIPS 69PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Ethy
liden
e no
rbor
nene
YS/
P2
2GC
ont
No
No
RF-
TA
DN
o15
.12.
1, 1
5.19
.6
Ethy
l met
hacr
ylat
eY
S/P
32G
Cont
No
T2II
AN
oR
F-T
AD
No
15.1
3, 1
5.19
.6, 1
6.6.
1,16
.6.2
N-E
thyl
met
hyla
llyla
min
eY
S/P
22G
Con
tN
oT2
IIB
No
CF
AC
Yes
15.1
2.3,
15.
17, 1
5.19
Ethy
l pro
pion
ate
YP
32G
Ope
nN
oN
oR
FA
No
15.1
9.6
2-Et
hyl-3
-pro
pyla
crol
ein
YS/
P3
2GC
ont
No
IIA
No
RF-
TA
No
15.1
9.6,
16.
2.9
Ethy
l tol
uene
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Fatty
aci
d (s
atur
ated
C13
+)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
9
Fatty
aci
d m
ethy
l este
rs (m
)Y
S/P
22G
Cont
No
--
Yes
RT
AB
CN
o15
.12.
3, 1
5.12
.4, 1
5.19
.6,
16.2
.6, 1
6.2.
9
Fatty
aci
ds (C
12+)
YS/
P2
2GC
ont
No
--
Yes
RT
AB
CN
o15
.12.
3, 1
5.12
.4, 1
5.19
.6,
16.2
.6, 1
6.2.
9Fa
tty a
cids
(C16
+)Y
P2
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6
Fatty
aci
ds (C
8-C
10)
YS/
P2
2GCo
ntN
o-
-Y
esR
TA
BC
No
15.1
2.3,
15.
12.4
, 15.
19,
16.2
.6, 1
6.2.
9Fa
tty a
cids
, ess
entia
lly li
near
(C6-
C18
) 2-
ethy
lhex
yl e
ster
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6
Ferr
ic c
hlor
ide
solu
tions
YS/
P3
2GO
pen
No
NF
ON
oN
oN
o15
.11,
15.
19.6
, 16.
2.9
Ferr
ic n
itrat
e/N
itric
aci
d so
lutio
nY
S/P
22G
Con
tN
oN
FR
TN
oY
es15
.11,
15.
19Fi
sh o
ilY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Fluo
rosi
licic
aci
d (2
0-30
%) i
n w
ater
solu
tion
YS/
P3
1GC
ont
No
--
NF
RT
No
Yes
15.1
1, 1
5.19
.6Fo
rmal
dehy
de so
lutio
ns (4
5% o
r les
s)Y
S/P
32G
Con
tN
oT2
IIB
No
RF-
TA
Yes
15.1
9.6,
16.
2.9
Form
amid
eY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Form
ic a
cid
YS/
P3
2GC
ont
No
T1II
AN
oR
T(g)
AY
es15
.11.
2, 1
5.11
.3, 1
5.11
.4,
15.1
1.6,
15.
11.7
, 15.
11.8
,15
.19.
6, 1
6.2.
9Fu
rfur
alY
S/P
32G
Con
tN
oT2
IIB
No
RF-
TA
No
15.1
9.6
Furf
uryl
alc
ohol
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6G
luci
tol/g
lyce
rol b
lend
pro
poxy
late
d (c
onta
i-ni
ng le
ss th
an 1
0% a
min
es)
ZS/
P3
2GCo
ntN
o-
-Y
esR
TA
BC
No
15.1
2.3,
15.
12.4
, 15.
19.6
Glu
tara
ldeh
yde
solu
tions
(50%
or l
ess)
YS/
P3
2GO
pen
No
NF
ON
oN
oN
o15
.19.
6G
lyce
rol m
onoo
leat
eY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Gly
cero
l pro
poxy
late
dZ
S/P
32G
Con
tN
o-
-Y
esR
TA
BC
No
15.1
2.3,
15.
12.4
, 15.
19.6
Gly
cero
l, pr
opox
ylat
ed a
nd e
thox
ylat
edZ
P3
2GO
pen
No
--
Yes
ON
oA
BC
No
Gly
cero
l/suc
rose
ble
nd p
ropo
xyla
ted
and
etho
xyla
ted
ZP
32G
Ope
nN
o-
-Y
esO
No
AB
CN
o
70 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Gly
cery
l tria
ceta
teZ
P3
2GO
pen
No
Yes
ON
oA
BN
oG
lyci
dyl e
ster
of C
10 tr
ialk
ylac
etic
aci
dY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Gly
cine
, sod
ium
salt
solu
tion
ZP
32G
Ope
nN
oY
esO
No
AN
oG
lyco
lic a
cid
solu
tion
(70%
or l
ess)
ZS/
P3
2GO
pen
No
--
NF
ON
oN
oN
o15
.19.
6, 1
6.2.
9G
lyox
al so
lutio
n (4
0% o
r les
s)Y
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Gly
oxyl
ic a
cid
solu
tion
(50
% o
r les
s)Y
S/P
32G
Ope
nN
o-
-Y
esO
No
AC
DN
o15
.11.
2, 1
5.11
.3, 1
5.11
.4,
15.1
1.6,
15.
11.7
, 15.
11.8
,15
.19.
6, 1
6.2.
9, 1
6.6.
1,16
.6.2
, 16.
6.3
Gly
phos
ate
solu
tion
(not
con
tain
ing
surf
acta
nt)
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9
Gro
undn
ut o
ilY
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9H
epta
ne (a
ll iso
mer
s)X
P2
2GC
ont
No
No
RF
AN
o15
.19.
6, 1
6.2.
9n-
Hep
tano
ic a
cid
ZP
32G
Ope
nN
oY
esO
No
AB
No
Hep
tano
l (al
l iso
mer
s) (d
)Y
P3
2GC
ont
No
No
RF
AN
o15
.19.
6H
epte
ne (a
ll iso
mer
s)Y
P3
2GC
ont
No
No
RF
AN
o15
.19.
6H
epty
l ace
tate
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
61-
Hex
adec
ylna
phth
alen
e / 1
,4-b
is (h
exad
ecyl
)na
phth
alen
e m
ixtu
reY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6
Hex
amet
hyle
nedi
amin
e (m
olte
n)Y
S/P
22G
Con
tN
oY
esC
TC
Yes
15.1
2, 1
5.17
, 15.
18, 1
5.19
.6,
16.2
.9H
exam
ethy
lene
diam
ine
adip
ate
(50%
inw
ater
)Z
P3
2GO
pen
No
Yes
ON
oA
No
Hex
amet
hyle
nedi
amin
e so
lutio
nY
S/P
32G
Cont
No
Yes
RT
AN
o15
.19.
6
Hex
amet
hyle
ne d
iisoc
yana
teY
S/P
21G
Cont
Dry
T1II
BY
esC
TA
C(b)
DY
es15
.12,
15.
16.2
, 15.
17, 1
5.18
,15
.19
Hex
amet
hyle
ne g
lyco
lZ
P3
2GO
pen
No
Yes
ON
oA
No
Hex
amet
hyle
neim
ine
YS/
P2
2GC
ont
No
No
RF-
TA
CN
o15
.19.
6H
exan
e (a
ll iso
mer
s)Y
P2
2GC
ont
No
No
RF
AN
o15
.19.
6
1,6-
Hex
aned
iol,
disti
llatio
n ov
erhe
ads
YP
32G
Ope
nN
o-
-Y
esO
No
AN
o15
.12.
3, 1
5.12
.4, 1
5.19
.6,
16.2
.9H
exan
oic
acid
YP
32G
Ope
nN
oY
esO
No
AB
No
15.1
9.6
Hex
anol
YP
32G
Ope
nN
oY
esO
No
AB
No
15.1
9.6
Hex
ene
(all
isom
ers)
YP
32G
Con
tN
oN
oR
FA
No
15.1
9.6
Hex
yl a
ceta
teY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6H
ydro
chlo
ric a
cid
ZS/
P3
1GC
ont
No
NF
RT
No
Yes
15.11
2009
RULES FOR THE CLASSIFICATION OF SHIPS 71PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Hyd
roge
n pe
roxi
de so
lutio
ns (o
ver 6
0% b
utno
t ove
r 70%
by
mas
s)Y
S/P
22G
Cont
No
NF
CN
oN
oN
o15
.5.1
, 15.
19.6
Hyd
roge
n pe
roxi
de so
lutio
ns (o
ver 8
% b
ut n
otov
er 6
0% b
y m
ass)
YS/
P3
2GCo
ntN
oN
FC
No
No
No
15.5
.2, 1
5.18
, 15.
19.6
2-H
ydro
xyet
hyl a
cryl
ate
YS/
P2
2GCo
ntN
oY
esC
TA
No
15.1
2, 1
5.13
, 15.
19.6
, 16.
6.1,
16.6
.2N
-(Hyd
roxy
ethy
l) et
hyle
nedi
amin
etria
cetic
acid
, tris
odiu
m sa
lt so
lutio
nY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
2-H
ydro
xy-4
-(met
hylth
io)b
utan
oic
acid
ZP
32G
Ope
nN
oY
esO
No
AN
oIll
ipe
oil
YP
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Isoa
myl
alc
ohol
ZP
32G
Con
tN
oN
oR
FA
BN
oIs
obut
yl a
lcoh
olZ
P3
2GCo
ntN
oN
oR
FA
BN
oIs
obut
yl fo
rmat
eZ
P3
2GCo
ntN
oN
oR
FA
BN
o
Isob
utyl
met
hacr
ylat
eZ
P3
2GCo
ntN
o-
-N
oR
FA
No
15.1
2, 1
5.13
, 15.
17, 1
6.6.
1,16
.6.2
Isop
horo
neY
S/P
32G
Con
tN
oY
esR
No
AN
o15
.19.
6Is
opho
rone
diam
ine
YS/
P3
2GC
ont
No
Yes
RT
AN
o16
.2.9
Isop
horo
ne d
iisoc
yana
teX
S/P
22G
Con
tD
ryY
esC
TA
BD
No
15.1
2, 1
5.16
.2, 1
5.17
, 15.
19.6
Isop
rene
YS/
P3
2GC
ont
No
T3II
BN
oR
FB
No
15.1
3, 1
5.14
, 15.
19.6
, 16.
6.1,
16.6
.2Is
opro
pano
lam
ine
YS/
P3
2GO
pen
No
T2II
AY
esO
F-T
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Is
opro
pyl a
ceta
teZ
P3
2GC
ont
No
No
RF
AB
No
Isop
ropy
lam
ine
YS/
P2
2GC
ont
No
T2II
AN
oC
F-T
CD
Yes
15.1
2, 1
5.14
, 15.
19Is
opro
pyla
min
e (7
0% o
r les
s) so
lutio
nY
S/P
22G
Con
tN
oN
oC
F-T
CD
Yes
15.1
2, 1
5.19
.6, 1
6.2.
9Is
opro
pylc
yclo
hexa
neY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6, 1
6.2.
9Is
opro
pyl e
ther
YS/
P3
2GCo
ntIn
ert
No
RF
AN
o15
.4.6
, 15.
13.3
, 15.
19.6
Lact
ic a
cid
ZP
32G
Ope
nN
oY
esO
No
AN
o
Lact
onitr
ile so
lutio
n (8
0% o
r les
s)Y
S/P
21G
Con
tN
oY
esC
TA
CD
Yes
15.1
2, 1
5,13
, 15.
17, 1
5.18
,15
.19,
16
6.1,
16.
6.2,
16.
6.3
Lard
YS/
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9La
tex,
am
mon
ia (1
% o
r les
s), i
nhib
ited
YS/
P3
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Late
x: C
arbo
xyla
ted
styre
ne-B
utad
iene
copo
lym
er; S
tyre
ne-B
utad
iene
rubb
erZ
P3
2GO
pen
No
--
Yes
ON
oA
No
16.2
.9
Laur
ic a
cid
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Li
gnin
sulp
honi
c ac
id, s
odiu
m sa
lt so
lutio
nZ
P3
2GO
pen
No
--
Yes
ON
oA
No
16.2
.9Li
nsee
d oi
lY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
72 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Liqu
id c
hem
ical
was
tes
XS/
P2
2GCo
ntN
oN
oC
F-T
AY
es15
.12,
15.
19.6
, 20.
5.1
Long
-cha
in a
lkar
yl p
olye
ther
(C11
-C20
)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Lo
ng-c
hain
alk
aryl
sulp
honi
c ac
id (C
16-C
60)
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
9Lo
ng-c
hain
alk
ylph
enat
e/Ph
enol
sulp
hide
mix
ture
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
L-Ly
sine
solu
tion
(60%
or l
ess)
ZP
32G
Ope
nN
oY
esO
No
AN
oM
agne
sium
chl
orid
e so
lutio
nZ
P3
2GO
pen
No
Yes
ON
oA
No
Mag
nesiu
m lo
ng-c
hain
alk
aryl
sulp
hona
te(C
11-C
50)
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
Mag
nesiu
m lo
ng-c
hain
alk
yl sa
licyl
ate
(C11
+)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6,16
.2.9
Mal
eic
anhy
drid
eY
S/P
32G
Cont
No
Yes
RN
oA
C(f)
No
16.2
.9M
ango
ker
nel o
ilY
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9M
erca
ptob
enzo
thia
zol,
sodi
um sa
lt so
lutio
nX
S/P
22G
Ope
nN
oN
FO
No
No
No
15.1
9.6,
16.
2.9
Mes
ityl o
xide
ZS/
P3
2GC
ont
No
T2II
BN
oR
F-T
AN
o15
.19.
6M
etam
sodi
um so
lutio
nX
S/P
12G
Ope
nN
oN
FO
No
No
No
15.1
9, 1
6.2.
9
Met
hacr
ylic
aci
dY
S/P
32G
Cont
No
Yes
RT
AN
o15
.13,
15.
19.6
, 16.
2.9,
16.6
.1M
etha
cryc
lic a
cid
- alk
oxyp
oly
(alk
ylen
eox
ide)
met
hacr
ylat
e co
poly
mer
, sod
ium
salt
aque
ous s
olut
ion
(45%
or l
ess)
ZS/
P3
2GO
pen
No
--
NF
ON
oA
CN
o16
.2.9
Met
hacr
ylic
resin
in e
thyl
ene
dich
lorid
eY
S/P
22G
Con
tN
oT2
IIA
No
RF-
TA
BN
o15
.19,
16.
2.9
Met
hacr
ylon
itrile
YS/
P2
2GC
ont
No
No
CF-
TA
Yes
15.1
2, 1
5.13
, 15.
17, 1
5.19
3 -M
etho
xy-1
-but
anol
ZP
32G
Con
tN
oN
oR
FA
No
3-M
etho
xybu
tyl a
ceta
teY
P3
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6N
-(2-M
etho
xy-1
-met
hyl e
thyl
)-2-e
thyl
-6-
met
hyl c
hlor
oace
tani
lide
XP
12G
Ope
nN
oY
esO
No
AN
o15
.19,
16.
2.6
Met
hyl a
ceta
teZ
P3
2GCo
ntN
oN
oR
FA
No
Met
hyl a
ceto
acet
ate
ZP
32G
Ope
nN
oY
esO
No
AN
oM
ethy
l acr
ylat
eY
S/P
22G
Con
tN
oT1
IIB
No
RF-
TA
Yes
15.1
3, 1
5.19
.6, 1
6.6.
1, 1
6.6.
2M
ethy
l alc
ohol
YP
32G
Cont
No
No
RF
AN
o15
.19.
6M
ethy
lam
ine
solu
tions
(42%
or l
ess)
YS/
P2
2GC
ont
No
No
CF-
TA
CD
Yes
15.1
2, 1
5.17
, 15.
19M
ethy
lam
yl a
ceta
teY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6M
ethy
lam
yl a
lcoh
olZ
P3
2GCo
ntN
oN
oR
FA
No
15.1
9.6
Met
hyl a
myl
ket
one
ZP
32G
Con
tN
oN
oR
FA
No
15.1
9.6
2009
RULES FOR THE CLASSIFICATION OF SHIPS 73PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Met
hylb
uten
olY
P3
2GCo
ntN
oN
oR
FA
No
15.1
9.6,
16.
2.9
Met
hyl t
ert-b
utyl
eth
erZ
P3
2GCo
ntN
oN
oR
FA
BN
oM
ethy
l but
yl k
eton
eY
P3
2GCo
ntN
oN
oR
FA
BN
o15
.19.
6M
ethy
lbut
ynol
ZP
32G
Cont
No
No
RF
AN
oM
ethy
l but
yrat
eY
P3
2GC
ont
No
No
RF
AN
o15
.19.
6M
ethy
lcyc
lohe
xane
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Met
hylc
yclo
pent
adie
ne d
imer
YP
22G
Con
tN
oN
oR
FB
No
15.1
9.6
Met
hylc
yclo
pent
adie
nyl m
anga
nese
trica
rbon
ylX
S/P
11G
Cont
No
--
Yes
CT
ABC
DY
es15
.12,
15.
18, 1
5.19
, 16.
2.9
Met
hyl d
ieth
anol
amin
eY
S/P
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
62-
Met
hyl-6
-eth
yl a
nilin
eY
S/P
32G
Ope
nN
oY
esO
No
AD
No
15.1
9.6
Met
hyl e
thyl
ket
one
ZP
32G
Con
tN
oN
oR
FA
No
2-M
ethy
l-5-e
thyl
pyr
idin
eY
S/P
32G
Ope
nN
oII
AY
esO
No
AD
No
15.1
9.6
Met
hyl f
orm
ate
ZS/
P2
2GC
ont
No
No
RF-
TA
Yes
15.1
2, 1
5.14
, 15.
192-
Met
hyl-2
-hyd
roxy
-3-b
utyn
eZ
S/P
32G
Cont
No
IIA
No
RF-
TA
BD
No
15.1
9.6,
16.
2.9
Met
hyl i
sobu
tyl k
eton
eZ
P3
2GC
ont
No
No
RF
AB
No
Met
hyl m
etha
cryl
ate
YS/
P2
2GC
ont
No
T2II
AN
oR
F-T
AN
o15
.13,
15.
19.6
, 16.
6.1,
16.6
.23
-Met
hyl-3
-met
hoxy
buta
nol
ZP
32G
Ope
nN
oY
esO
No
AN
oM
ethy
l nap
htha
lene
(mol
ten)
XS/
P2
2GC
ont
No
Yes
RN
oA
DN
o15
.19.
62-
Met
hyl-1
,3-p
ropa
nedi
olZ
P3
2GO
pen
No
--
Yes
ON
oA
No
2-M
ethy
lpyr
idin
eZ
S/P
22G
Con
tN
oN
oC
FA
No
15.1
2.3,
15.
19.6
3-M
ethy
lpyr
idin
eZ
S/P
22G
Con
tN
oN
oC
FA
CN
o15
.12.
3, 1
5.19
4-M
ethy
lpyr
idin
eZ
S/P
22G
Con
tN
oN
oC
F-T
AN
o15
.12.
3, 1
5.19
, 16.
2.9
N-M
ethy
l-2-p
yrro
lidon
eY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Met
hyl s
alic
ylat
eY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
alph
a-M
ethy
lstyr
ene
YS/
P2
2GC
ont
No
T1II
BN
oR
F-T
AD
(j)N
o15
.13,
15.
19.6
, 16.
6.1,
16.6
.23
-(met
hylth
io)p
ropi
onal
dehy
deY
S/P
22G
Cont
No
T3II
AN
oC
F-T
BC
Yes
15.1
2, 1
5.17
, 15.
19M
olyb
denu
m p
olys
ulfid
e lo
ng c
hain
alk
yl d
it-hi
ocar
bam
ide
com
plex
.Y
S/P
22G
Con
tN
o-
-Y
esC
TA
BC
Yes
15.1
2, 1
5.17
, 15.
19, 1
6.2.
6,16
.2.9
Mor
phol
ine
YS/
P3
2GC
ont
No
T2II
AN
oR
FA
No
15.1
9.6
Mot
or fu
el a
nti-k
nock
com
poun
ds (c
onta
inin
gle
ad a
lkyl
s)X
S/P
11G
Cont
No
T4II
AN
oC
F-T
AC
Yes
15.6
, 15.
12, 1
5.18
, 15.
19
74 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Myr
cene
XP
22G
Con
tN
o-
-N
oR
FA
No
15.1
9.6,
16.
2.9
Nap
htha
lene
(mol
ten)
XS/
P2
2GC
ont
No
T1II
AY
esR
No
AD
No
15.1
9.6,
16.
2.9
Nap
htha
lene
sulp
honi
c ac
id-F
orm
alde
hyde
copo
lym
er, s
odiu
m sa
lt so
lutio
nZ
P3
2GO
pen
No
--
Yes
ON
oA
No
16.2
.9
Neo
deca
noic
aci
dY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Nitr
atin
g ac
id (m
ixtu
re o
f sul
phur
ic a
nd n
itric
acid
s)Y
S/P
22G
Con
tN
oN
FC
TN
oY
es15
.11,
15.
16.2
, 15.
17, 1
5.19
Nitr
ic a
cid
(70%
and
ove
r)Y
S/P
22G
Con
tN
oN
FC
TN
oY
es15
.11,
15.
19N
itric
aci
d (le
ss th
an 7
0%)
YS/
P2
2GC
ont
No
NF
RT
No
Yes
15.1
1, 1
5.19
Nitr
ilotri
acet
ic a
cid,
triso
dium
salt
solu
tion
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6
Nitr
oben
zene
YS/
P2
2GC
ont
No
T1II
AY
esC
TA
DN
o15
.12,
15.
17, 1
5.18
, 15.
19,
16.2
.9
Nitr
oeth
ane
YS/
P3
2GC
ont
No
IIB
No
RF-
TA
(f)N
o15
.19.
6, 1
6.6.
1, 1
6.6.
2,16
.6.4
Nitr
oeth
ane(
80%
) /N
itrop
ropa
ne(2
0%)
YS/
P3
2GC
ont
No
IIB
No
RF-
TA
(f)N
o15
.19.
6, 1
6.6.
1, 1
6.6.
2,16
.6.3
Nitr
oeth
ane,
1-N
itrop
ropa
ne (e
ach
15%
or
mor
e) m
ixtu
reY
S/P
32G
Con
tN
o-
-N
oR
FA
No
15.1
9.6,
16.
2.6,
16.
6.1,
16.
6.2,
16.6
.3o-
Nitr
ophe
nol (
mol
ten)
YS/
P2
2GCo
ntN
oY
esC
TA
DN
o15
.12,
15.
19.6
, 16.
2.6,
16.
2.9
1- o
r 2-N
itrop
ropa
neY
S/P
32G
Cont
No
T2II
BN
oR
F-T
AN
o15
.19.
6N
itrop
ropa
ne (6
0%)/N
itroe
than
e (4
0%)
mix
ture
YS/
P3
2GC
ont
No
No
RF-
TA
(f)N
o15
.19.
6
o-or
p-N
itrot
olue
nes
YS/
P2
2GC
ont
No
IIB
Yes
CT
AB
No
15.1
2, 1
5.17
, 15.
19.6
Non
ane
(all
isom
ers)
XP
22G
Con
tN
oN
oR
FB
CN
o15
.19.
6N
onan
oic
acid
(all
isom
ers)
YP
32G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.9
Non
-edi
ble
indu
stria
l gra
de p
alm
oil
YS/
P2
2GC
ont
No
--
Yes
RN
oA
BC
No
15.1
2.3,
15.
12.4
, 15.
19.6
,16
.2.6
, 16.
2.9
Non
ene
(all
isom
ers)
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Non
yl a
lcoh
ol (a
ll iso
mer
s)Y
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Non
yl m
etha
cryl
ate
mon
omer
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.9
Non
ylph
enol
XP
12G
Ope
nN
oY
esO
No
AN
o15
.19,
16.
2.6,
16.
2.9
Non
ylph
enol
pol
y (4
+)et
hoxy
late
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6N
oxio
us li
quid
, NF,
(1) n
.o.s.
(tra
de n
ame
....,
cont
ains
....)
ST1
, Cat
. XX
P1
2GO
pen
No
--
Yes
ON
oA
No
15.1
9, 1
6.2.
6
Nox
ious
liqu
id, F
, (2)
n.o
.s. (t
rade
nam
e ...
.,co
ntai
ns ..
..) S
T1, C
at. X
XP
12G
Con
tN
oT3
IIA
No
RF
AN
o15
.19,
16.
2.6
2009
RULES FOR THE CLASSIFICATION OF SHIPS 75PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Nox
ious
liqu
id, N
F, (3
) n.o
.s. (t
rade
nam
e ...
.,co
ntai
ns ..
..) S
T2, C
at. X
XP
22G
Ope
nN
o-
Yes
ON
oA
No
15.1
9, 1
6.2.
6
Nox
ious
liqu
id, F
, (4)
n.o
.s. (t
rade
nam
e ...
....,
cont
ains
....)
ST2
, Cat
. XX
P2
2GC
ont
No
T3II
AN
oR
FA
No
15.1
9, 1
6.2.
6
Nox
ious
liqu
id, N
F, (5
) n.o
.s. (t
rade
nam
e ...
.,co
ntai
ns ..
..) S
T2, C
at. Y
YP
22G
Ope
nN
o-
Yes
ON
oA
No
15.1
9, 1
6.2.
6, 1
6.2.
9(l)
Nox
ious
liqu
id, F
, (6)
n.o
.s. (t
rade
nam
e ...
.,co
ntai
ns ..
..) S
T2, C
at. Y
YP
22G
Con
tN
oT3
IIA
No
RF
AN
o15
.19,
16.
2.6,
16.
2.9(
l)
Nox
ious
liqu
id, N
F, (7
) n.o
.s. (t
rade
nam
e ...
.,co
ntai
ns ..
..) S
T3, C
at. Y
YP
32G
Ope
nN
o-
-Y
esO
No
AN
o15
.19,
16.
2.6,
16.
2.9(
l)
Nox
ious
liq
uid,
F, (
8) n
.o.s.
(tra
de n
ame
....,
cont
ains
....)
ST3
, Cat
. YY
P3
2GC
ont
No
T3II
AN
oR
FA
No
15.1
9, 1
6.2.
6, 1
6.2.
9(l)
Nox
ious
liqu
id, N
F, (9
) n.o
.s. (t
rade
nam
e ...
.,co
ntai
ns ..
..) S
T3, C
at. Z
ZP
32G
Ope
nN
o-
Yes
ON
oA
No
Nox
ious
liqu
id, F
, (10
) n.o
.s. (t
rade
nam
e ...
.,co
ntai
ns ..
..) S
T3, C
at. Z
ZP
32G
Con
tN
oT3
IIA
No
RF
AN
o
Oct
ane
(all
isom
ers)
XP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Oct
anoi
c ac
id (a
ll iso
mer
s)Y
P3
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6
Oct
anol
(all
isom
ers)
YP
22G
Ope
nN
oY
esO
No
AN
oO
cten
e (a
ll iso
mer
s)Y
P2
2GC
ont
No
No
RF
AN
o15
.19.
6n-
Oct
yl a
ceta
teY
P3
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Oct
yl a
ldeh
ydes
YP
32G
Con
tN
o-
-N
oR
FA
No
15.1
9.6,
16.
2.9
Oct
yl d
ecyl
adi
pate
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
9O
lefin
-Alk
yl e
ster c
opol
ymer
(mol
ecul
arw
eigh
t 200
0+)
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Ole
fin m
ixtu
res (
C5-C
7)Y
P3
2GC
ont
No
No
RF
AN
o15
.19.
6O
lefin
mix
ture
s (C
5-C
15)
XP
22G
Cont
No
No
RF
AN
o15
.19.
6O
lefin
s (C1
3+, a
ll iso
mer
s)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
9al
pha-
Ole
fins (
C6-
C18
) mix
ture
sX
P2
2GC
ont
No
No
RF
AN
o15
.19.
6, 1
6.2.
9O
leic
aci
dY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
9
Ole
umY
S/P
22G
Con
tN
oN
FC
TN
oY
es15
.11.
2 to
15.
11.8
, 15.
12.1
,15
.16.
2, 1
5.17
, 15.
19, 1
6.2.
6O
leyl
amin
eX
S/P
22G
Con
tN
oY
esR
TA
No
15.1
9.6,
16.
2.9
Oliv
e oi
lY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Oxy
gena
ted
alip
hatic
hyd
roca
rbon
mix
ture
ZS/
P3
2GO
pen
No
--
Yes
ON
oA
BC
No
76 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Palm
aci
d oi
lY
S/P
22G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Pa
lm fa
tty a
cid
disti
llate
YS/
P2
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Palm
ker
nel a
cid
oil
YS/
P2
2GO
pen
No
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Palm
ker
nel o
ilY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Palm
ker
nel o
lein
YP
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Palm
ker
nel s
tear
inY
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Pa
lm m
id fr
actio
nY
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Pa
lm o
ilY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Palm
oil
fatty
aci
d m
ethy
l est
erY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Palm
ole
inY
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Pa
lm st
earin
YP
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Para
ffin
wax
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Para
ldeh
yde
ZS/
P3
2GC
ont
No
T3II
BN
oR
FA
No
15.1
9.6,
16.
2.9
Para
ldeh
yde-
amm
onia
reac
tion
prod
uct
YS/
P2
2GC
ont
No
No
CF-
TA
No
15.1
2.3,
15.
19Pe
ntac
hlor
oeth
ane
YS/
P2
2GC
ont
No
NF
RT
No
No
15.1
2, 1
5.17
, 15.
19.6
1,3-
Pent
adie
neY
P3
2GC
ont
No
No
RF-
TA
BN
o15
.13,
15.
19.6
, 16.
6.1,
16.
6.2,
16.6
.3Pe
ntae
thyl
eneh
exam
ine
XS/
P2
2GO
pen
No
Yes
Yes
ON
oB
Yes
15.1
9Pe
ntan
e (a
ll iso
mer
s)Y
P3
2GC
ont
No
No
RF
AN
o15
.14,
15.
19.6
Pent
anoi
c ac
idY
P3
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6
n-Pe
ntan
oic
acid
(64%
)/2-M
ethy
l but
yric
aci
d(3
6%) m
ixtu
reY
S/P
22G
Ope
nN
oT2
Yes
CN
oA
DN
o15
.11.
2, 1
5.11
.3, 1
5.11
.4,
15.1
1.6,
15.
11.7
, 15.
11.8
,15
.12.
3, 1
5.19
Pent
ene
(all
isom
ers)
YP
32G
Con
tN
oN
oR
FA
No
15.1
4, 1
5.19
.6n-
Pent
yl p
ropi
onat
eY
P3
2GC
ont
No
No
RF
AN
o15
.19.
6Pe
rchl
oroe
thyl
ene
YS/
P2
2GC
ont
No
NF
RT
No
No
15.1
2.1,
15.
12.2
, 15.
19.6
Petro
latu
mY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Phen
olY
S/P
22G
Con
tN
oT1
IIA
Yes
CT
AN
o15
.12,
15.
19, 1
6.2.
91-
Phen
yl-1
-xyl
yl e
than
eY
P3
2GO
pen
No
Yes
ON
oA
BN
oPh
osph
ate
este
rs, a
lkyl
(C12
-C14
) am
ine
YP
22G
Con
tN
o-
-N
oR
FA
No
15.1
9.6,
16.
2.6,
16.
2.9
Phos
phor
ic a
cid
ZS/
P3
2GO
pen
No
NF
ON
oN
oN
o15
.11.
1, 1
5.11
.2, 1
5.11
.3,
15.1
1.4,
15.
11.6
, 15.
11.7
,15
.11.
8, 1
6.2.
9
2009
RULES FOR THE CLASSIFICATION OF SHIPS 77PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Phos
phor
us, y
ello
w o
r whi
teX
S/P
11G
Cont
Pad+
(ven
t or
iner
t)N
o(c)
CN
oC
Yes
15.7
, 15.
19, 1
6.2.
9
Phth
alic
anh
ydrid
e (m
olte
n)Y
S/P
22G
Con
tN
oT1
IIA
Yes
RN
oA
DN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9al
pha-
Pine
neX
P2
2GC
ont
No
No
RF
AN
o15
.19.
6be
ta-P
inen
eX
P2
2GC
ont
No
No
RF
AN
o15
.19.
6Pi
ne o
ilX
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Poly
acry
lic a
cid
solu
tion
(40%
or l
ess)
ZS/
P3
2GO
pen
No
--
Yes
ON
oA
CN
oPo
lyal
kyl (
C18
-C22
) acr
ylat
e in
xyl
ene
YP
22G
Con
tN
oN
oR
FA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Po
ly(2
-8)a
lkyl
ene
glyc
ol m
onoa
lkyl
(C1-
C6)
ethe
rZ
P3
2GO
pen
No
--
Yes
ON
oA
No
Poly
(2-8
)alk
ylen
e gl
ycol
mon
oalk
yl (C
1-C
6)et
her a
ceta
teY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6
Poly
alky
l (C
10-C
20) m
etha
cryl
ate
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Poly
alky
l (C
10-C
18) m
etha
cryl
ate/
ethy
lene
-pr
opyl
ene
copo
lym
er m
ixtu
reY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
Poly
bute
neY
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6
Poly
bute
nyl s
ucci
nim
ide
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Po
ly(2
+)cy
clic
aro
mat
ics
XP
12G
Con
tN
oY
esR
No
AD
No
15.1
9, 1
6.2.
6, 1
6.2.
9Po
lyet
her (
mol
ecul
ar w
eigh
t 135
0+)
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6Po
lyet
hyle
ne g
lyco
lZ
P3
2GO
pen
No
Yes
ON
oA
No
Poly
ethy
lene
gly
col d
imet
hyl e
ther
ZP
32G
Ope
nN
oY
esO
No
AN
oPo
lyet
hyle
ne p
olya
min
esY
S/P
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6Po
lyet
hyle
ne p
olya
min
es (m
ore
than
50%
C5-
C20
par
affin
oil)
YS/
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Poly
ferr
ic su
lpha
te so
lutio
nY
S/P
32G
Ope
nN
oN
FO
No
No
No
15.1
9.6
Poly
(imin
oeth
ylen
e)-g
raft-
N-p
oly
(eth
ylen
eoxy
) sol
utio
n (9
0% o
r les
s)Z
S/P
32G
Ope
nN
o-
-N
FO
No
AC
No
16.2
.9
Poly
isob
uten
amin
e in
alip
hatic
(C10
-C14
)so
lven
tY
P3
2GO
pen
No
T3II
AY
esO
No
AN
o15
.19.
6
Poly
isob
uten
yl a
nhyd
ride
addu
ctZ
P3
2GO
pen
No
Yes
ON
oA
BN
oPo
ly(4
+)is
obut
ylen
eY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
9Po
lym
ethy
lene
pol
yphe
nyl i
socy
anat
eY
S/P
22G
Con
tD
ryY
es(a
)C
T(a)
AN
o15
.12,
15.
16.2
, 15.
19.6
, 16.
2.9
Poly
olef
in (m
olec
ular
wei
ght 3
00+)
YS/
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Poly
olef
in a
mid
e al
kene
amin
e (C
17+)
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6
78 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Poly
olef
in a
mid
e al
kene
amin
e bo
rate
(C28
-C
250)
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Poly
olef
inam
ine
(C28
-C25
0)Y
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
Poly
olef
inam
ine
in a
lkyl
(C2-
C4)
ben
zene
sY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Po
lyol
efin
amin
e in
aro
mat
ic so
lven
tY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6,16
.2.6
, 16.
2.9
Poly
olef
in a
min
oest
er sa
lts (m
olec
ular
wei
ght
2000
+)Y
P2
2GO
pen
No
--
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Poly
olef
in a
nhyd
ride
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Poly
olef
in e
ster
(C28
-C25
0)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Po
lyol
efin
phe
nolic
am
ine
(C28
-C25
0)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Po
lyol
efin
pho
spho
rosu
lphi
de, b
ariu
m d
eri-
vativ
e (C
28-C
250)
YP
22G
Ope
nN
oY
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Poly
(20)
oxye
thyl
ene
sorb
itan
mon
oole
ate
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Po
ly(5
+)pr
opyl
ene
YP
32G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
9Po
lypr
opyl
ene
glyc
olZ
S/P
32G
Con
tN
oY
esO
No
AB
CN
o15
.19.
6Po
lysi
loxa
neY
P3
2GC
ont
No
No
RF
AB
No
15.1
9.6,
16.
2.9
Pota
ssiu
m c
hlor
ide
solu
tion
ZS/
P3
2GO
pen
No
--
NF
ON
oA
No
16.2
.9Po
tass
ium
hyd
roxi
de so
lutio
nY
S/P
32G
Ope
nN
oN
FO
No
No
No
15.1
9.6
Pota
ssiu
m o
leat
eY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Pota
ssiu
m th
iosu
lpha
te (5
0% o
r les
s)Y
P3
2GO
pen
No
NF
ON
oN
oN
o15
.19.
6, 1
6.2.
9n-
Prop
anol
amin
eY
S/P
32G
Ope
nN
oY
esO
No
AD
No
15.1
9.6,
16.
2.9
beta
-Pro
piol
acto
neY
S/P
22G
Con
tN
oII
AY
esR
TA
No
15.1
9.6
Prop
iona
ldeh
yde
YS/
P3
2GCo
ntN
oN
oR
F-T
AY
es15
.17,
15.
19.6
Prop
ioni
c ac
idY
S/P
32G
Cont
No
T1II
AN
oR
FA
Yes
15.1
1.2,
15.
11.3
, 15.
11.4
,15
.11.
6, 1
5.11
.7, 1
5.11
.8,
15.1
9.6
Prop
ioni
c an
hydr
ide
YS/
P3
2GCo
ntN
oT2
IIA
Yes
RT
AN
o15
.19.
6Pr
opio
nitri
leY
S/P
21G
Con
tN
oT1
IIB
No
CF-
TA
DY
es15
.12,
15.
17, 1
5.18
, 15.
19n-
Prop
yl a
ceta
teY
P3
2GC
ont
No
No
RF
AB
No
15.1
9.6
n-Pr
opyl
alc
ohol
YP
32G
Cont
No
No
RF
AN
o15
.19.
6n-
Prop
ylam
ine
ZS/
P2
2GCo
ntIn
ert
T2II
AN
oC
F-T
AD
Yes
15.1
2, 1
5.19
Prop
ylbe
nzen
e (a
ll iso
mer
s)Y
P3
2GC
ont
No
No
RF
AN
o15
.19.
6Pr
opyl
ene
glyc
ol m
ethy
l eth
er a
ceta
teZ
P3
2GC
ont
No
No
RF
AN
oPr
opyl
ene
glyc
ol m
onoa
lkyl
eth
erZ
P3
2GCo
ntN
oN
oR
FA
BN
o
2009
RULES FOR THE CLASSIFICATION OF SHIPS 79PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Prop
ylen
e gl
ycol
phe
nyl e
ther
ZP
32G
Ope
nN
oY
esO
No
AB
No
Prop
ylen
e ox
ide
YS/
P2
2GC
ont
Iner
tT2
IIB
No
CF-
TA
CN
o15
.8, 1
5.12
.1, 1
5.14
, 15.
19Pr
opyl
ene
tetra
mer
XP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Prop
ylen
e tri
mer
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Pyrid
ine
YS/
P3
2GC
ont
No
T1II
AN
oR
FA
No
15.1
9.6
Pyro
lysis
gas
olin
e (c
onta
inin
g be
nzen
e)Y
S/P
22G
Con
tN
oT3
IIA
No
CF-
TA
BN
o15
.12,
15.
17, 1
5.19
.6R
apes
eed
oil
YS/
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9R
apes
eed
oil (
low
eru
cic
acid
con
tain
ing
less
than
4%
free
fatty
aci
ds)
YS/
P2
(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Rap
e se
ed o
il fa
tty a
cid
met
hyl e
sters
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6R
esin
oil
disti
lled
YS/
P2
2GCo
ntN
oT1
IIA
No
CF-
TA
BC
No
15.1
2, 1
5.17
, 15.
19.6
Ric
e br
an o
ilY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Ros
inY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Saffl
ower
oil
YS/
P2(
k)2G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Sh
ea b
utte
rY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Sodi
um a
lkyl
(C14
-C17
) sul
phon
ates
(60-
65%
solu
tion)
YP
22G
Ope
nN
oN
FO
No
No
No
15.1
9.6,
16.
2.6,
16.
2.9
Sodi
um a
lum
inos
ilica
te sl
urry
ZP
32G
Ope
nN
oY
esO
No
AB
No
Sodi
um b
enzo
ate
ZP
32G
Ope
nN
oY
esO
No
AN
oSo
dium
bor
ohyd
ride
(15%
or l
ess)
/Sod
ium
hydr
oxid
e so
lutio
nY
S/P
32G
Ope
nN
oN
FO
No
No
No
15.1
9.6,
16.
2.6,
16.
2.9
Sodi
um c
arbo
nate
solu
tion
ZP
32G
Ope
nN
oY
esO
No
AN
oSo
dium
chl
orat
e so
lutio
n (5
0% o
r les
s)Z
S/P
32G
Ope
nN
oN
FO
No
No
No
15.9
, 15.
19.6
, 16.
2.9
Sodi
um d
ichr
omat
e so
lutio
n (7
0% o
r les
s)Y
S/P
22G
Ope
nN
oN
FC
No
No
No
15.1
2.3,
15.
19So
dium
hyd
roge
n su
lphi
de (6
% o
r les
s)/
Sodi
um c
arbo
nate
(3%
or l
ess)
solu
tion
ZP
32G
Ope
nN
oN
FO
No
No
No
15.1
9.6,
16.
2.9
Sodi
um h
ydro
gen
sulp
hite
solu
tion
(45%
or
less
)Z
S/P
32G
Ope
nN
oN
FO
No
No
No
16.2
.9
Sodi
um h
ydro
sulp
hide
/Am
mon
ium
sulp
hide
solu
tion
YS/
P2
2GC
ont
No
No
CF-
TA
Yes
15.1
2, 1
5.14
, 15.
17, 1
5.19
,16
.6.1
, 16.
6.2,
16.
6.3
Sodi
um h
ydro
sulp
hide
solu
tion
(45%
or l
ess)
ZS/
P3
2GC
ont
Ven
tor
pad
(gas
)N
FR
TN
oN
o15
.19.
6, 1
6.2.
9
Sodi
um h
ydro
xide
solu
tion
YS/
P3
2GO
pen
No
NF
ON
oN
oN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9So
dium
hyp
ochl
orite
solu
tion
(15%
or l
ess)
YS/
P2
2GC
ont
No
--
NF
RN
oN
oN
o15
.19.
6
80 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Sodi
um n
itrite
solu
tion
YS/
P2
2GO
pen
No
NF
ON
oN
oN
o15
.12.
3.1,
15.
12.3
.2, 1
5.19
,16
.2.9
Sodi
um p
etro
leum
sulp
hona
teY
S/P
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6So
dium
pol
y(4+
)acr
ylat
e so
lutio
nsZ
P3
2GO
pen
No
--
Yes
ON
oA
No
16.2
.9So
dium
silic
ate
solu
tion
YP
32G
Ope
nN
oN
FO
No
No
No
15.1
9.6,
16.
2.9
Sodi
um su
lphi
de so
lutio
n (1
5% o
r les
s)Y
S/P
32G
Con
tN
oN
FC
TN
oN
o15
.19.
6, 1
6.2.
9So
dium
sulp
hite
solu
tion
(25%
or l
ess)
YP
32G
Ope
nN
oN
FO
No
No
No
15.1
9.6,
16.
2.9
Sodi
um th
iocy
anat
e so
lutio
n (5
6% o
r les
s)Y
P3
2GO
pen
No
Yes
ON
oN
oN
o15
.19.
6, 1
6.2.
9So
yabe
an o
ilY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Styr
ene
mon
omer
YS/
P3
2GC
ont
No
T1II
AN
oR
FA
BN
o15
.13,
15.
19.6
, 16.
6.1,
16.
6.2
Sulp
hohy
droc
arbo
n (C
3-C
88)
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Su
lpho
lane
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9
Sulp
hur (
mol
ten)
ZS
31G
Ope
nV
ent
or p
ad(g
as)
T3Y
esO
F-T
No
No
15.1
0, 1
6.2.
9
Sulp
huric
aci
dY
S/P
32G
Ope
nN
oN
FO
No
No
No
15.1
1, 1
5.16
.2, 1
5.19
.6Su
lphu
ric a
cid,
spen
tY
S/P
32G
Ope
nN
oN
FO
No
No
No
15.1
1, 1
5.16
.2, 1
5.19
.6Su
lphu
rized
fat (
C14
-C20
)Z
P3
2GO
pen
No
Yes
ON
oA
BN
oSu
lphu
rized
pol
yole
finam
ide
alke
ne (C
28-
C25
0) a
min
eZ
P3
2GO
pen
No
--
Yes
ON
oA
No
Sunf
low
er se
ed o
ilY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6
,16.
2.9
Tall
oil,
crud
eY
S/P
22G
Con
tN
o-
-Y
esC
TA
BC
Yes
15.1
2, 1
5.17
, 15.
19, 1
6.2.
6Ta
ll oi
l, di
still
edY
P2
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6
Tall
oil f
atty
aci
d (re
sin a
cids
less
than
20%
)Y
S/P
22G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6
Tall
oil p
itch
YS/
P2
2GC
ont
No
--
Yes
CT
AB
CY
es15
.12,
15.
17, 1
5.19
, 16.
2.6,
16.2
.9Ta
llow
YP
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Tallo
w fa
tty a
cid
YP
22G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9Te
trach
loro
etha
neY
S/P
22G
Con
tN
oN
FR
TN
oN
o15
.12,
15.
17, 1
5.19
.6Te
traet
hyle
ne g
lyco
lZ
P3
2GO
pen
No
Yes
ON
oA
No
Tetra
ethy
lene
pen
tam
ine
YS/
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Tetra
hydr
ofur
anZ
S3
2GC
ont
No
T3II
BN
oR
F-T
AN
o15
.19.
6Te
trahy
dron
apht
hale
neY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Tetra
met
hylb
enze
ne (a
ll iso
mer
s)X
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.9
2009
RULES FOR THE CLASSIFICATION OF SHIPS 81PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Tita
nium
dio
xide
slur
ryZ
P3
2GO
pen
No
Yes
ON
oA
BN
oTo
luen
eY
P3
2GC
ont
No
No
RF
AN
o15
.19.
6
Tolu
ened
iam
ine
YS/
P2
2GC
ont
No
Yes
CT
AD
Yes
15.1
2, 1
5.17
, 15.
19, 1
6.2.
6,16
.2.9
Tolu
ene
diiso
cyan
ate
YS/
P2
2GC
ont
Dry
T1II
AY
esC
F-T
AC(
b)D
Yes
15.1
2, 1
5.16
.2, 1
5.17
, 15.
19,
16.2
.9o-
Tolu
idin
eY
S/P
22G
Con
tN
oY
esC
TA
No
15.1
2, 1
5.17
, 15.
19Tr
ibut
yl p
hosp
hate
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
6
1,2,
3-Tr
ichl
orob
enze
ne (m
olte
n)X
S/P
12G
Con
tN
oY
esC
TA
CD
Yes
15.1
2.1,
15.
17, 1
5.19
, 16.
2.6,
16.2
.91,
2,4-
Tric
hlor
oben
zene
XS/
P1
2GC
ont
No
Yes
RT
AB
No
15.1
9, 1
6.2.
91,
1,1-
Tric
hlor
oeth
ane
YP
32G
Ope
nN
oY
esO
No
AN
o15
.19.
61,
1,2-
Tric
hlor
oeth
ane
YS/
P3
2GC
ont
No
NF
RT
No
No
15.1
2.1,
15.
19.6
Tric
hlor
oeth
ylen
eY
S/P
22G
Con
tN
oT2
IIA
Yes
RT
No
No
15.1
2, 1
5.17
, 15.
19.6
1,2,
3-Tr
ichl
orop
ropa
neY
S/P
22G
Con
tN
oY
esC
TA
BD
No
15.1
2, 1
5.17
, 15.
191,
1,2-
Tric
hlor
o-1,
2,2-
Trifl
uoro
etha
neY
P2
2GO
pen
No
NF
ON
oN
oN
o15
.19.
6Tr
icre
syl p
hosp
hate
(con
tain
ing
1% o
r mor
eor
tho-
isom
er)
YS/
P1
2GC
ont
No
T2II
AY
esC
No
AB
No
15.1
2.3,
15.
19, 1
6.2.
6
Tric
resy
l pho
spha
te (c
onta
inin
g le
ss th
an 1
%or
tho-
isom
er)
YS/
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.6
Trid
ecan
eY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6Tr
idec
anoi
c ac
idY
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6,
16.
2.6,
16.
2.9
Trid
ecyl
ace
tate
YP
32G
Ope
nN
o-
-Y
esO
No
AN
o15
.19.
6Tr
ieth
anol
amin
eZ
S/P
32G
Ope
nN
oII
AY
esO
No
AN
o16
.2.9
Trie
thyl
amin
eY
S/P
22G
Cont
No
T2II
AN
oR
F-T
AC
Yes
15.1
2, 1
5.19
.6Tr
ieth
ylbe
nzen
eX
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Trie
thyl
enet
etra
min
eY
S/P
22G
Ope
nN
oT2
IIA
Yes
ON
oA
No
15.1
9.6
Trie
thyl
pho
spha
teZ
P3
2GO
pen
No
Yes
ON
oA
No
Trie
thyl
pho
sphi
teZ
S/P
32G
Con
tN
oN
oR
F-T
AB
No
15.1
2.1,
15.
19.6
, 16.
2.9
Triis
opro
pano
lam
ine
ZP
32G
Ope
nN
oY
esO
No
AN
oTr
iisop
ropy
late
d ph
enyl
pho
spha
tes
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6
Trim
ethy
lace
tic a
cid
YS/
P2
2GC
ont
No
Yes
RN
oA
No
15.1
1.2,
15.
11.3
, 15.
11.4
,15
.11.
5, 1
5.11
.6, 1
5.11
.7,
15.1
1.8,
15.
19.6
, 16.
2.6,
16.2
.9
82 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Trim
ethy
lam
ine
solu
tion
(30%
or l
ess)
ZS/
P2
2GC
ont
No
No
CF-
TA
CY
es15
.12,
15.
14, 1
5.19
, 16.
2.9
Trim
ethy
lben
zene
(all
isom
ers)
XP
22G
Con
tN
oN
oR
FA
No
15.1
9.6
Trim
ethy
lol p
ropa
ne p
ropo
xyla
ted
ZS/
P3
2GO
pen
No
--
Yes
ON
oA
BC
No
2,2,
4-Tr
imet
hyl-1
,3-p
enta
nedi
ol d
iisob
utyr
ate
ZP
32G
Ope
nN
oY
esO
No
AB
No
2,2,
4-Tr
imet
hyl-1
,3-p
enta
nedi
ol-1
-isob
utyr
ate
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
61,
3,5-
Trio
xane
YS/
P3
2GC
ont
No
No
RF
AD
No
15.1
9.6,
16.
2.9
Trip
ropy
lene
gly
col
ZP
32G
Ope
nN
oY
esO
No
AN
oTr
ixyl
yl p
hosp
hate
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
6Tu
ng o
ilY
S/P
2(k)
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Turp
entin
eX
P2
2GC
ont
No
No
RF
AN
o15
.19.
6U
ndec
anoi
c ac
idY
P2
2GO
pen
No
Yes
ON
oA
No
16.2
.6, 1
6.2.
91-
Und
ecen
eX
P2
2GO
pen
No
Yes
ON
oA
No
15.1
9.6
Und
ecyl
alc
ohol
XP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6, 1
6.2.
9U
rea/
Am
mon
ium
nitr
ate
solu
tion
ZP
32G
Ope
nN
oY
esO
No
AN
oU
rea/
Am
mon
ium
nitr
ate
solu
tion
(con
tain
ing
less
than
1%
free
am
mon
ia)
ZS/
P3
2GCo
ntN
oN
FR
TA
No
16.2
.9
Ure
a/A
mm
oniu
m p
hosp
hate
solu
tion
YP
22G
Ope
nN
oY
esO
No
AN
o15
.19.
6U
rea
solu
tion
ZP
32G
Ope
nN
oY
esO
No
AN
oV
aler
alde
hyde
(all
isom
ers)
YS/
P3
2GC
ont
Iner
tT3
IIB
No
RF-
TA
No
15.4
.6, 1
5.19
.6V
eget
able
aci
d oi
ls (m
)Y
S/P
22G
Ope
nN
o-
-Y
esO
No
AB
CN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9V
eget
able
fatty
aci
d di
still
ates
(m)
YS/
P2
2GO
pen
No
--
Yes
ON
oA
BC
No
15.1
9.6,
16.
2.6,
16.
2.9
Vin
yl a
ceta
teY
S/P
32G
Con
tN
oT2
IIA
No
RF
AN
o15
.13,
15.
19.6
, 16.
6.1,
16.6
.2
Vin
yl e
thyl
eth
erZ
S/P
21G
Con
tIn
ert
T3II
BN
oC
F-T
AY
es15
.4, 1
5.13
, 15.
14, 1
5.19
.6,
16.6
.1, 1
6.6.
2
Vin
ylid
ene
chlo
ride
YS/
P2
2GC
ont
Iner
tT2
IIA
No
RF-
TB
Yes
15.1
3, 1
5.14
, 15.
19.6
, 16.
6.1,
16.6
.2
Vin
yl n
eode
cano
ate
YS/
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.13,
15.
19.6
, 16.
6.1,
16.6
.2
Vin
ylto
luen
eY
S/P
22G
Con
tN
oII
AN
oR
FA
BN
o15
.13,
15.
19.6
, 16.
6.1,
16.6
.2W
axes
YP
22G
Ope
nN
o-
-Y
esO
No
AB
No
15.1
9.6,
16.
2.6,
16.
2.9
Whi
te sp
irit,
low
(15-
20%
) aro
mat
icY
P2
2GC
ont
No
No
RF
AN
o15
.19.
6, 1
6.2.
9
2009
RULES FOR THE CLASSIFICATION OF SHIPS 83PART 27
ac
de
fg
hi’
i’’i’’
’j
kℓ
no
Xyl
enes
YP
22G
Con
tN
oN
oR
FA
No
15.1
9.6,
16.
2.9(
h)X
ylen
es/e
thyl
benz
ene
(10%
or m
ore)
mix
ture
YP
22G
Cont
No
--
No
RF
AN
o15
.19.
6X
ylen
olY
S/P
22G
Ope
nN
oII
AY
esO
No
AB
No
15.1
9.6,
16.
2.9
Zinc
alk
aryl
dith
ioph
osph
ate
(C7-
C16
)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6, 1
6.2.
9
Zinc
alk
enyl
car
boxa
mid
eY
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6Zi
nc a
lkyl
dith
ioph
osph
ate
(C3-
C14
)Y
P2
2GO
pen
No
Yes
ON
oA
BN
o15
.19.
6, 1
6.2.
6
84 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
RULES FOR THE CLASSIFICATION OF SHIPS 85PART 27
2009
17.3 NOTES TO THE TABLE 17.1.1-1
(a) If the product to be carried contains flamma-ble solvents such that the flashpoint does notexceed 60°C, then special electrical systemsand a flammable-vapour detector shall beprovided.
(b) Although water is suitable for extinguishingopen-air fires involving chemicals to whichthis footnote applies, water shall not be al-lowed to contaminate closed tanks containingthese chemicals because of the risk of haz-ardous gas generation.
(c) Phosphorus, yellow or white is carried aboveits autoignition temperature and thereforeflashpoint is not appropriate. Electricalequipment requirements may be similar tothose for substances with a flashpoint above60°C.
(d) Requirements are based on those isomershaving a flashpoint of 60°C, or less; someisomers have a flashpoint greater than 60°C,and therefore the requirements based onflammability would not apply to such iso-mers.
(e) Applies to n-decyl alcohol only.(f) Dry chemical shall not be used as fire extin-
guishing media.(g) Confined spaces shall be tested for both for-
mic acid vapours and carbon monoxide gas, adecomposition product.
(h) Applies to p-xylene only.(i) For mixtures containing no other components
with safety hazards and where the pollutioncategory is Y or less.
(j) Only certain alcohol-resistant foams are ef-fective.
(k) Requirements for Ship Type identified in col-umn e might be subject to regulation 4.1.3 ofAnnex II of MARPOL 73/78.
(l) Applicable when the melting point is equal toor greater than 0°C.
(m) From vegetable oils specified in Chapter 17.
86 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
18 LIST OF PRODUCTS TOWHICH THIS PART OF THERULES DOES NOT APPLY
18.1 GENERAL
18.1.1 The following are products (see Table18.1.1-1), which have been reviewed for their safety andpollution hazards and determined not to present hazards tosuch an extent as to warrant application of this Part of theRules.
18.1.2 Although the products listed in this chapter falloutside the scope of this Part of the Rules, the attention isdrawn to the fact that some safety precautions may be neededfor their safe transportation. Accordingly, the Register shallprescribe appropriate safety requirements (see column c).
18.1.3 Some liquid substances are identified as fallinginto Pollution Category Z and, therefore, subject to certainrequirements of Annex II of MARPOL 73/78.
18.1.4 Liquid mixtures which are assessed or provi-sionally assessed as prescribed in 6, Annex II, MARPOL73/78 as falling into Pollution Category Z or OS, and whichdo not present safety hazards, may be carried under the ap-propriate entry in this chapter for “Noxious or Non-NoxiousLiquid Substances, not otherwise specified (n.o.s.)“.
18.2 EXPLANATORY NOTES TOTHE TABLE 18.1.1-1
.1 Product name (column a)The product name shall be used in theshipping document for any cargo offeredfor bulk shipments. Any additional namemay be included in brackets after theproduct name (for explanation see Chap-ter 19 of the IBC Code). The productnames are identical with the names givenin IBC Code 2004, as amended. In somecases, the product names are not identicalwith the names given in previous issuesof the Code.
.2 Pollution Category (column b)The letter Z means the Pollution Categoryassigned to each product under Annex IIof MARPOL 73/78. OS means the prod-uct was evaluated and found to fall out-side Categories X, Y, or Z.
.3 Fire protection (column c)A - alcohol resistant foam or multipur-
pose foam;B - regular foam (encompasses all
foams that are not of an alcohol-resistant type, including fluoropro-tein and aqueous-film-formingfoam (AFFF);
C - water spray;NO - no special medium recommendedThe information given for fire extin-guishing medium is only for guidance anddoes not constitute any mandatory re-quirement (see MSC/Circ. 553).NF - non flammable- - indicates no informations
Table 18.1.1-1
Product name Pollution Category Fire protection
a b cAcetone Z AAlcoholic beverages, n.o.s. Z AApple juice OS NFn-Butyl alcohol Z Asec-Butyl alcohol Z ACalcium nitrate solutions (50% or less) Z NFClay slurry OS NFCoal slurry OS NFDiethylene glycol Z AEthyl alcohol Z AEthylene carbonate Z AGlucose solution OS NFGlycerine Z NOHexamethylenetetramine solutions Z NFHexylene glycol Z B, C
RULES FOR THE CLASSIFICATION OF SHIPS 87PART 27
2009
a b cHydrogenated starch hydrolysate OS -Isopropyl alcohol Z AKaolin slurry OS NFLecithin OS -Magnesium hydroxide slurry Z NFMaltitol solution OS -N-Methylglucamine solution (70% or less) Z -Methyl propyl ketone Z NOMolasses OS ANoxious liquid, (11) n.o.s. (trade name ...., contains....) Cat. Z
Z NO
Non-noxious liquid, (12) n.o.s. (trade name ....,contains ....) Cat. OS
OS NO
Polyaluminium chloride solution Z NFPolyglycerin, sodium salt solution (containing lessthan 3% sodium hydroxide)
Z A
Potassium formate solutions Z -Propylene carbonate Z -Propylene glycol Z ASodium acetate solutions Z -Sodium sulphate solutions Z -Sorbitol solution OS NFSulphonated polyacrylate solution Z -Tetraethyl silicate monomer/oligomer (20% in etha-nol)
Z -
Triethylene glycol Z AVegetable protein solution (hydrolysed) OS NFWater OS NF
88 RULES FOR THE CLASSIFICATION OF SHIPSPART 27
2009
19 TRANSPORT OF LIQUIDCHEMICAL WASTES
19.1 PREAMBLE
19.1.1 Maritime transport of liquid chemical wastescould present a threat to human health and to the environ-ment.
19.1.2 Liquid chemical wastes shall, therefore, betransported in accordance with relevant international conven-tions and recommendations and, in particular, where it con-cerns maritime transport in bulk, with the requirements ofthis Part of the Rules.
19.2 DEFINITIONS
For the purpose of this chapter:
19.2.1 Liquid chemical wastes are substances, solu-tions or mixtures, offered for shipment, containing or con-taminated with one or more constituents which are subject tothe requirements of this Part of Rules and for which no directuse is envisaged but which are carried for dumping, incinera-tion or other methods of disposal other than at sea.
19.2.2 Transboundary movement means maritimetransport of wastes from an area under the national jurisdic-tion of one country to or through an area under the nationaljurisdiction of another country, or to or through an area notunder the national jurisdiction of any country, provided atleast two countries are concerned by the movement.
19.3 APPLICABILITY
19.3.1 The requirements of this chapter are applicableto the transboundary movement of liquid chemical wastes inbulk by seagoing ships and shall be considered in conjunctionwith all other requirements of this Part of the Rules.
19.3.2 The requirements of this chapter do not applyto:
.1 wastes derived from shipboard operationswhich are covered by the requirements ofMARPOL 73/78; and
.2 substances, solutions or mixtures con-taining or contaminated with radioactivematerials which are subject to the appli-cable requirements for radioactive mate-rials.
19.4 PERMITTED SHIPMENTS
19.4.1 Transboundary movement of wastes is permit-ted to commence only when:
.1 notification has been sent by the compe-tent authority of the country of origin, orby the generator or exporter through thechannel of the competent authority of thecountry of origin, to the country of finaldestination; and
.2 the competent authority of the country oforigin, having received the written con-sent of the country of final destinationstating that the wastes will be safely in-cinerated or treated by other methods ofdisposal, has given authorization to themovement.
19.5 DOCUMENTATION
19.5.1 In addition to the documentation specified in16.2 of this Part of the Rules, ships engaged in transboundarymovement of liquid chemical wastes shall carry on board awaste movement document issued by the competent authorityof the country of origin.
19.6 CLASSIFICATION OF LIQUIDCHEMICAL WASTES
19.6.1 For the purpose of the protection of the marineenvironment, all liquid chemical wastes transported in bulkshall be treated as Category X noxious liquid substances, ir-respective of the actual evaluated category.
19.7 CARRIAGE AND HANDLING OFLIQUID CHEMICAL WASTES
19.7.1 Liquid chemical wastes shall be carried in shipsand cargo tanks in accordance with the minimum require-ments for liquid chemical wastes specified in Chapter 17,unless there are clear grounds indicating that the hazards ofthe wastes would warrant:
.1 carriage in accordance with the ship type1 requirements; or
.2 any additional requirements of this Part ofthe Rules applicable to the substance or,in case the of a mixture, its constituentpresenting the predominant hazard.