SES 47.1 Protective Coatings Specification Rev 08

8/9/2019 SES 47.1 Protective Coatings Specification Rev 08

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Sarawak Shell BerhadSabah Shell Petroleum Company Limited

STANDARD ENGINEERING SPECIFICATION

SES 47.1 REV. 08

MARCH 2012

PAGE 2 OF 50

This Specification sets out the Standard requirements to be complied with by the Contractor carrying outwork directly or indirectly for Sarawak Shell Berhad or Sabah Shell Petroleum Company Limited.

For a given Contract or Purchase Order, the documents related thereto may specify requirements thatdeviate from or quality those set out in this Specification.

The Contractor shall be responsible for identifying any and all such deviations and qualifications, andensuring that the work is completed in strict accordance therewith.

REVISION REGISTER

Rev.No.

Date Details of Revision

06 02/99 To combine and supersede the current SES 47.1 Rev. 5 and SES 47.2 Rev 3, with anew title, changes in some coating systems & thickness (CORAL’srecommendation), addition of maintenance painting philosophy and warranty,exclusion of coatings for building.

07 10/08 1.3.2 Additional definitions

1.4 Edited content on cross-references

2.3.4 Additional information for clause on permits

2.4.2 Additional safety requirement for blast cleaning equipment added

3.2 Removed revision year for surface preparation referencestandards, to use latest revision as per Clause 9.0 References

3.2.1.1, 3.2.1.2,

3.2.6.1, 3.2.7.1,3.2.10

Removal of the word ‘isocyanide free’ after the final coating

‘aliphatic polyurethane’

3.2.5 Addition of coating system requirement for aluminium helidecks

3.2.8.2 Removal of coal tar epoxy coating for initial and maintenancepainting for bottom plate and added requirements for proposedcoating system.

3.2.7 Addition of note on coating system requirement for super duplexstainless steel and high nickel steel

3.2.11 Addition of 2nd coat to coating system

3.2.14 Addition of the 3.2.14 Studbolts and Nuts Coating Specification

3.4.2 Addition of salt spray test method as per ISO 9227 and defectsassessment method as per ISO 4628-1/2/3 and ageing resistancetest as per ISO 20340

4 3 1 R d i t t bl t l i d t l t b


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Rev.No.

Date Details of Revision

Appendix 1 Change in colour coding as per current requirement for offshorefacilities

Appendix 2 Change in colour coding as per current requirement for onshorefacilities

Appendix 7 Addition of Appendix 7 Appendix D ISO 4628 Studbolts and NutsDefect Assessment

Appendix 8 Addition of Appendix 8 Visual Rust Scale ISO 4628-3

General Edited misspellings

08 03/12 Rewrite • Re-structured SES 47.1 Rev 7 to include DEP70.48.11.30.Gen. Protective Coatings for OffshoreFacilities requirements,

• Revised surface preparation requirements for water jetting and wet abrasive blasting

• Include surface preparation requirements for internal tank

and vessel coatings• Revised new product qualification to follow DEP

70.48.11.30-Gen

• Revised coating system code

• Addition of TSA coating

• Revised Quality Assurance and Quality Controlrequirements

• Update of coating system for stud bolts and nuts to follow ASTM B 841 and MESC SPE 81/007

• Deletion of topside helideck drawing in Appendix 6 and torefer to SES95.4 for the topside helideck drawing

• Appendix 1 and 2, Colour Coding revised to follow RALColour Code

• Deletion of Appendix 3 on Glass Flake Polyester GenericSpecification

• Deletion of Appendix 4 on Glass Flake Epoxy GenericSpecification

• Deletion of Appendix 7 on Appendix D ISO 4628

• Deletion of Appendix 8 Visual Rust Scale ISO 4628-3

• Include ITP examples.


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Table of Contents

PART I INTRODUCTION .......................................................................................................................7

1.0

SCOPE .....................................................................................................................................7

1.1 DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS...........7 1.2

DEFINITIONS ............................................................................................................7

1.2.1

General Definitions ...................................................................................7

1.2.2 Specific Definitions ...................................................................................8

1.3 CROSS REFERENCES .............................................................................................8

PART II

SPECIFICATION .......................................................................................................................9

2.0 PAINTING CONTRACTOR’S RESPONSIBILITIES ..................................................................9 2.1 GENERAL ..................................................................................................................9 2.2

QUALITY....................................................................................................................9

2.3

WARRANTY ..............................................................................................................9

2.3.1

New construction, refurbishment and renovation maintenanceprogrammes .............................................................................................9

2.3.2

Spot repairs ............................................................................................10

2.4

SAFETY ...................................................................................................................10

2.4.1

General .................................................................................................. 10 2.4.2

Personal Protection ................................................................................ 10

2.4.3 Safe Handling of Coating Materials ........................................................ 10 2.4.4 Permits ................................................................................................... 10

2.5

EQUIPMENT ............................................................................................................ 10

2.5.1 General .................................................................................................. 10 2.5.2 Blast Cleaning Equipment ...................................................................... 10 2.5.3

Coating Spraying Equipment .................................................................. 11

2.5.4

Earthing and Maintenance of Equipment ................................................ 11

2.6

SCAFFOLDING, STAGING AND ACCESSIBILITY .................................................. 11

2.7

PROTECTION OF EQUIPMENT AND STRUCTURAL MEMBERS ......................... 11 2.8

WEATHER PROTECTION .......................................................................................11

2.9

RESOURCE REQUIREMENTS ...............................................................................11

2.9.1 Painting Contractor ................................................................................. 11 2.9.2

Painting Inspector ...................................................................................12

2.9.3

Blaster/Painter ........................................................................................ 13

2.9.4 Inspection Equipment ............................................................................. 13

3.0

SURFACE PREPARATION .................................................................................................... 14

3.1

GENERAL ............................................................................................................... 14

3.2 PRE-CLEANING OF SURFACES AND SOLVENT CLEANING ............................... 14 3.3

SURFACE PREPARATION BY ABRASIVE BLAST CLEANING .............................. 14

3.3.1 General .................................................................................................. 14 3.3.2 New Construction and Modifications ....................................................... 15

3.3.3 Maintenance Painting ............................................................................. 15 3.4

ABRASIVE BLASTING MATERIALS ....................................................................... 15

3.5

ALTERNATIVE METHODS OF SURFACE CLEANING ........................................... 16

3.5.1 General .................................................................................................. 16


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4.6

APPLICATION METHODS....................................................................................... 19

4.6.1 General .................................................................................................. 19 4.6.2 Spray Application.................................................................................... 19 4.6.3 Brush Application.................................................................................... 19 4.6.4 Roller Application.................................................................................... 20

4.7 REPAIR OF DEFECTS ............................................................................................ 20 4.7.1 General .................................................................................................. 20 4.7.2

Inadequate Coating Thickness ............................................................... 20

4.7.3

Contaminated Surfaces .......................................................................... 20

4.7.4

Coating Damage not Exposing Steel Surface ......................................... 20

4.7.5

Coating Damage Exposing Steel Surface ............................................... 20

4.7.6

Repair of Zinc Silicate Primer ................................................................. 20

5.0 QUALITY ASSURANCE AND QUALITY CONTROL ............................................................... 21 5.1 QUALITY ASSURANCE .......................................................................................... 21

5.1.1

Quality Plan for the Implementation of this Specification ........................ 21

5.2

QUALITY CONTROL ............................................................................................... 21

5.2.1 General .................................................................................................. 21 5.2.2

Status and Progress Reports .................................................................. 22

5.2.3

Rejected Work and Equipment ............................................................... 22

5.3

CLEANED SURFACES ........................................................................................... 22 5.3.1 General .................................................................................................. 22

5.3.2 Residual Salt Contamination .................................................................. 22 5.3.3

Surface Dust ........................................................................................... 23

5.3.4 Surface Profile ........................................................................................ 23 5.4 COATING APPLICATION AND COATED SURFACES ........................................... 23

5.4.1

General Visual Coating Appearance ....................................................... 23

5.4.2 Dew Point, Air Humidity and Substrate Temperature .............................. 23 5.4.3

Wet Film Thickness (WFT) ..................................................................... 24

5.4.4 Dry Film Thickness (DFT) ....................................................................... 24

5.4.5 Holiday Testing .......................................................................................24

5.4.6

Adhesion ................................................................................................ 24

5.4.7 Antiskid system for helidecks and walkways ........................................... 25 5.4.8

Inorganic zinc primers ............................................................................ 25

6.0 COATING SYSTEMS REQUIREMENT................................................................................... 26 6.1 COATING SYSTEM SELECTION ............................................................................ 26

6.1.1

Service temperature ............................................................................... 26

6.1.2 Compatibility with Existing Coating Systems .......................................... 26 6.2 COATING MATERIALS ........................................................................................... 27

6.3

COATING SYSTEM PRODUCT APPROVAL REQUIREMENT ............................... 27

6.3.1 New Product - Coating System Qualification .......................................... 27 6.3.2 New Products - Internal Coating System Qualification Requirements

for Pressure Vessel ................................................................................ 27 6.4

PAINTING AND COATING SYSTEM SCHEDULES FOR EXTERNAL APPLICATION ......................................................................................................... 28

6.4.1 Carbon Steel and Low Alloy Steels Maximum OperatingTemperature < 120°C 28


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6.5

PAINTING AND COATING SYSTEM SCHEDULES FOR INTERNAL APPLICATION ......................................................................................................... 33 6.5.1 Internal surfaces of tanks and vessels, with service temperature up

to 60°C ................................................................................................... 33 6.5.2 Methanol storage tank, storage temperature maximum 40˚C ................. 33 6.5.3 Glycol storage tank ................................................................................. 33

6.6 COATING SYSTEM FOR VENDOR SUPPLIED EQUIPMENT ................................ 34 6.7

COATING SYSTEM FOR STUD BOLTS AND NUTS .............................................. 34

6.7.1

General .................................................................................................. 34

6.7.2

Coating System ...................................................................................... 34

6.7.3

Transportation ........................................................................................34

7.0 MAINTENANCE PAINTING .................................................................................................... 35 7.1 GENERAL ................................................................................................................ 35 7.2 CORROSION CRITERIA FOR RUSTING ................................................................ 35 7.3

BLISTERING ............................................................................................................ 35

7.4

CRACKING, FLAKING AND CHALKING ................................................................. 36

7.5 STAINLESS STEEL SUBSTRATES ........................................................................ 36 7.6

TYPES OF MAINTENANCE .................................................................................... 36

7.6.1

Preventive Cleaning ............................................................................... 36

7.6.2

Spot Repair ............................................................................................36 7.6.3 Refurbishment ........................................................................................ 36

7.6.4 Renovation ............................................................................................. 37

8.0 REFERENCES ........................................................................................................................38

APPENDIX 1 - COLOUR CODING FOR OFFSHORESTRUCTURES/EQUIPMENT/MATERIALS ............................................................................ 42

APPENDIX 2 - COLOUR CODING FOR ONSHORE STRUCTURES/EQUIPMENT/MATERIALS ...... 44

APPENDIX 3 EXAMPLES OF AN INSPECTION TEST PLAN (ITP) FOR COATING WORK .............. 45


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PART I INTRODUCTION

1.0 SCOPE

This specification establishes the detailed requirements of SSB/SSPC with respect to coatingsystems, equipment, materials, surface preparation, application, inspection and testingrequirements to be employed for new construction projects and maintenance of both onshore andoffshore oil and gas production facilities and processing installations.

This SES is a revision of the SES of the same number dated October 2008.

This specification is not applicable to submarine installations such as pipelines and risers, whichare covered elsewhere (DEPs).

This revision is written to bring the specification largely in line with the requirements of DEP70.48.11.30-Gen, Protective Coatings for Offshore Facilities.

1.1 DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS

Unless otherwise authorized by SSB/SSPC, the distribution of this SES is confined to companiesforming part of the Royal Dutch/Shell Group or managed by a Group Company and to theirnominated Contractors and nominated sellers.

This SES is intended for use in oil & gas production and treatment facilities in SSB/SSPC.

If national and/or local regulations exist in which some of the requirements may be more stringentthan in this SES the Contractor shall determine by careful scrutiny which of the requirements arethe more stringent and which combination of requirements will be acceptable as regards safety,

environmental, economic and legal aspects. In all cases the Contractor shall inform the Principalof any deviation from the requirements of this SES which is considered to be necessary in order tocomply with national and/or local regulations. The Company may then negotiate with the Authorities concerned with the object of obtaining agreement to follow this SES as closely aspossible.

1.2 DEFINITIONS

1.2.1 General Definitions

The Company is Sarawak Shell Berhad/Sabah Shell Petroleum Company Limited (SSB/SSPC).

The Contractor is a company that carries out all or part of the design, engineering, procurement,construction, commissioning or management of a project, or operation or maintenance of a facility.The Company, when referring to SSB/SSPC, may undertake all or part of the duties of theContractor.


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1.2.2 Specific Defini tions

Surface Profile Definition in accordance with ISO 8503-1, the micro roughness of a surfacegenerally expressed as the height of the major peaks relative to the major valleys

Atmospheric Zone Region from 6m above HAT upwards

Splash Zone Region from 3m below LAT up to 2m above HAT

Spray Zone Region between the splash zone and atmospheric zone

Submerged Zone The region below the splash zone including seawater, sea bottom and buriedzones.

HAT Highest astronomical tide levelLAT Lowest astronomical tide level

Dew Point The temperature of a given air water-vapour mixture, at which condensation starts

Dry Film Thickness(DFT)

Thickness, in microns, of the dried or cured paint or coating film

Wet Film Thickness(WFT)

Thickness, in microns, of the wet coating film

Nominal Dry FilmThickness (NDFT)

A Dry Film Thickness specified for each coat or whole coating system

Holidays Pinholes and small defects in a coating system, penetrating the entire thickness ofthe coating

Hot Dip Galvanising A process whereby steel articles are zinc coated by immersion in a molten zincbath.

Micron One-thousandth of a mm

Pot Life Time interval, after mixing of paint or coating materials, during which the mixturecan be applied without difficulty or loss of final coating quality.

Shelf Life Maximum interval in which a paint can be transported and stored in undamagedand unopened packaging without any influence on its application or performanceproviding the ambient conditions are within the limit set by the paint manufacturer,

Substrate Surface to be coatedPigment Solid colouring agent in paint

Thinner Volatile liquid added to ease application of paint

Teepol A cleaning detergent

Spot repair A localised coating repair process applicable where ≤ 1% of the coated surfacearea shows visible rusting. Refer to clause 7.7.3 in this SES for details

Refurbishment A broad coating repair process applicable where >1% and ≤10% of the coatedsurface shows visible rusting. Refer to clause 7.7.4 in this SES for details.

Renovation The total removal and reinstatement of the coating, a process applicable where>10% of the coated surface shows visible rusting. Refer to clause 7.7.5 in this SES

for details.Water Jetting Definition in accordance with SSPC SP12/ NACE No.5 - Water discharged from a

nozzle at pressures of 70 MPa (10,000 psig) or greater to prepare a surface forcoating or inspection.

Ultra High PressureWater Jetting

Definition in accordance with SSPC SP12/ NACE No.5 – Water-jetting performedat pressures above 210 MPa (30,000 psig)


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PART II SPECIFICATION

2.0 PAINTING CONTRACTOR’S RESPONSIBILITIES

2.1 GENERAL

The Contractor is, in addition to his responsibilities under the general conditions of the contract,responsible for the quality of the work, which shall be performed in strict accordance with thisspecification and all other relevant documents, such as site regulations, local or national

requirements and safety rules.

In case of contradicting requirements or discrepancies between this Specification and other relevantdocuments the Contractor and/or Manufacturer shall obtain a written ruling from the Companybefore proceeding with the work affected.

The coating Contractor shall ensure that up-to-date technical data and safety sheets are obtainedfrom the Manufacturer/Supplier before commencing coating. The coating Contractor shall ensurethat coating products which have deteriorated during storage or have exceeded their shelf life shallnot be used.

2.2 QUALITY

The Contractor is fully responsible for all Quality Assurance, Quality Control and Testing.

The Contractor shall submit, in detail, proposals for implementing this specification and demonstratethat his plan provides the quality assurance and control required. The obligations of the Contractorare explained in more detail in Section 5.0 Quality Assurance and Quality Control.

2.3 WARRANTY

Contractors undertaking coating work, for both new construction and for maintenance carried out inaccordance with this Specification, shall guarantee the quality of their coating work.

2.3.1 New const ruct ion, refurbishment and renovation maintenance programmes

Five (5) years after acceptance date of the completed coating work for liquid coating systems, ten(10) years for thermally sprayed coating systems:

1. The degree of rusting shall not be worse than rust grade 7-S (0.3%) according to ASTM D610. This degree of rusting shall only be allowed in localized areas and not be scattered overthe total surface area coated.

2. Visual cracking and flaking of the coating system is not allowed. (Rating 0 as per ISO 4628-4and ISO 4628-5, respectively).

3. Blistering is not allowed.4. No excessive loss of gloss shall be observed in the topcoats specified for the atmospheric

zone. The topcoat on steel floors is not included but the topside of the helideck shall be


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2.3.2 Spot repairs

For spot repairs carried out on/offshore for coating systems no longer under warranty, the warrantyperiod shall be two (2) years after completion of the applied repair coating. The same requirementas per section (2.3.1 (1)) shall be adhered to.

Surfaces not fulfilling these quality requirements shall be repaired, and the Contractor shall bear allcosts necessary for the repair.

Surfaces that have suffered mechanical damage in normal service or chemical damage caused byabnormal service conditions fall outside this warranty.

Initial acceptance of spot repair work by Company or its representatives will not relieve theContractor of his obligations covered by this section.

2.4 SAFETY

2.4.1 General

The Contractor shall be responsible for all aspects of safety related to the painting work to be done.

2.4.2 Personal Protection

The recommendations for personal protection and for protective equipment as given in the paintmanufacturer’s data sheets, and/or indicated on the containers, shall be met in full.

2.4.3 Safe Handling of Coating Materials

Handling, mixing and application of the paints and coating materials shall be done strictly inaccordance with the manufacturers’ recommended procedures for the assurance of personal safety.Safety precautions shall be clearly described on the technical data sheets of paints and coatingmaterials supplied, as well as on the containers. Where this Specification indicates restrictions onthe use of certain materials, these limitations shall be strictly adhered to.

2.4.4 Permits

All necessary permits for the work shall be obtained before work commences. It is the Contractor’sresponsibility to know what permits are required and that he is familiar with the systems concerned.

2.5 EQUIPMENT

2.5.1 General

Equipment shall be maintained in good condition such that the requirements of this Specification areclearly met.


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Nozzles shall be discarded and replaced when the nozzle diameter has increased through wear by50% of the original diameter.

Abrasive blast cleaning equipment shall be of an intrinsically safe construction and equipped with aremote shut-off valve triggered by the release of a dead man’s handle at the blasting nozzle.

2.5.3 Coating Spraying Equipment

The spraying equipment to be used shall meet the recommendations and instructions set forth bythe Manufacturer for each specific coating system.

Normally application will be by airless spraying. If air spraying is to be used, an adequate moisturetrap shall be placed between the air supply and the pressure pot feed to the gun. The traps shallcontinuously bleed off any water or oil from the air supply.

Suitably working regulators and gauges shall be provided for the air supply to all paint sprayequipment. Gauges shall be regularly checked for their accuracy.

2.5.4 Earthing and Maintenance of Equipment

All mechanical equipment shall be earthed and precautions shall be taken to prevent the build up ofstatic electricity. In particular, blasting equipment, its operators and the equipment being blastedshall be properly bonded to prevent the occurrence of electrostatic discharges.

2.6 SCAFFOLDING, STAGING AND ACCESSIBILITY

Scaffolding for coating work should be constructed bearing in mind that it should provide easy andsufficient access for correct preparation, coating and inspection of all surfaces. Operators should beable to stand up with body and arms free of scaffolding or staging and the structure being worked

on.

2.7 PROTECTION OF EQUIPMENT AND STRUCTURAL MEMBERS

It is the Contractor’s responsibility to ensure that all equipment, structures and any other areas notbeing coated, are protected from mechanical damage, damage caused by grit during grit blasting,paint droppings, or over spray, to the entire satisfaction of the Company representative. Examplesof items, parts and areas to be protected are: valve spindles, glass, glass faced pressure gauges,compressors, pumps, etc., cables or stainless steel pipework, grating, control desks and panels,equipment identification plates, or any areas of the structure not being painted at that particular

time.

2.8 WEATHER PROTECTION

The Contractor shall supply all the weather protection, scaffolding and any other equipmentnecessary to ensure that the work is carried out in accordance with this Specification and to theagreed programme. This includes e.g. heating and air drying equipment if required.


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Functional areas to be evaluated shall include the following: Management Procedures

o Company policyo Organisation and Personnelo Administrative and Management Procedureso Technical Capabilitieso Personnel Qualificationso Technical Resourceso Procedureso Equipment, Facilities, and Experience

Quality Controlo Personnel Qualificationso Inspection Procedures and Recording Systems

Safetyo Safety Procedure and Record-keeping Systemso Resource Materials

2.9.2 Painting Inspector

All painting inspection shall be carried out by certified personnel described below.

2.9.2.1 Qualification/Experience

The Painting Inspector shall be certified under any one (1) of the following certification programmes:

(i) Institute of Materials, Malaysia (IMM) Coating Inspector Certification Scheme: Module 1 & 2(ii) NACE Coating Inspector Certification Scheme: Level 1 and 2(iii) IMM Certified Trainer for Protective Coating Technician Certification Scheme(iv) Other reputable training institute e.g. SSPC, FROSIO, ICorr, etc

He shall have at least three (3) years experience in painting inspection, and a good workingknowledge on all aspects of painting such as procedures, specification, paint performance andapplication as well as inspection. He shall be able to use paint inspection tools that are normallyassociated with the works.

2.9.2.2 Responsibilities

The Inspector’s duty is to verify that the requirements of the coating specification are met. ASTMD3276 Standard Guide for Painting Inspectors (Metal Substrates) shall be referred to by theInspector at all times as an information aid to carrying out his task efficiently.

Beside specification verification, the Painting Inspector shall be responsible for witnessing, verifying,and documenting the work at various inspection points:

• Pre-surface preparation inspection

• Measurement of environmental conditions

• Evaluation of compressor (air cleanliness) and surface preparation equipment


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2.9.3 Blaster/Painter

2.9.3.1 Qualification/Experience

Blaster/Painter shall be an IMM certified Protective Coatings Technician Level 1 or Level 2, qualifiedto work at offshore platforms to do painting work as required by the Company. He shall becompetent and skilful with the following operations:

Blasting;o Equipment set Up (Type of Nozzle, Compressor Pressure, Type of Hose, After Cooler)o Abrasive (Type, Size)o Surface Quality Achieved

Painting;o Equipment (Application Method, Air Pressure, Tip Size)o Paint Used (Product Used, Generic Name, Mixing Ratio, Mixing Method, Thinner,

Percent Thinning, Expected Pot Life, Thickness Required)

He shall have a minimum of two (2) years’ experience in blasting and/or painting.

2.9.3.2 Responsibilities

Level 1 Technician shall be allowed to carry out either blasting or painting work depending on hiscategory of certification.

Level 2 Technician shall be allowed to carry out both blasting and painting works.

Both Level 1 and Level 2 Protective Coating Technicians should be capable of working effectivelyfrom scaffolding or temporary structures and at heights up to 30m above water.

Performance of all blasting and painting works shall be under the supervision of the Contractor’sPainting Inspector.

2.9.4 Inspection Equipment

Both the Inspection Agency, where employed, and the Contractor’s inspector shall provide paintinginspection equipment. The appropriate instruments to be used at various inspection points include: Sling Psychrometer Surface-contact Thermometer 0° to 150°C Psychrometric Tables Electronic Hygrometers Dew Point Calculator Surface profile replica tape Electromagnetic DFT Gauge Eddy-current DFT gauge WFT Comb Gauge Inspection Mirror


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3.0 SURFACE PREPARATION

3.1 GENERAL

For optimum paint performance, surfaces to be painted or coated shall be completely dry and freefrom burrs, weld spatter, flux, rust, loose scale, dirt, dust, grease, oil and other foreign matter beforeany paint is applied.

If the surface has been exposed to a polluted, e.g. salt-laden, atmosphere, it shall be washed downwith clean, fresh water prior to blasting or power tool cleaning.

After preparation of the substrate surface, any grit, dust etc. shall be removed and a layer of primeror first coat of paint applied before any corrosion or recontamination occurs, normally within 4 hoursafter blasting.

As a general rule, surface preparation shall be carried out by dry blast cleaning in accordance withISO 8504 – 2.

Dehumidification during surface preparation and coating application especially in enclosed areasmay be necessary in some adverse conditions (i.e. environmental conditions outside the range ofthe specifications). NACE 6A192/ SSPC TR 3 may be referred to when it has been determined thatdehumidification equipment is necessary. Dehumidification to prevent flash rusting may beaccomplished by refrigeration or desiccant, in order to maintain a relative humidity (RH) within anenclosure at less than 50%.

3.2 PRE-CLEANING OF SURFACES AND SOLVENT CLEANING

This cleaning procedure is mandatory before further cleaning or surface preparation. Prior to theactual cleaning operation, surface contaminants such as oil, grease, hydrocarbon, etc, shall be

removed, preferably by degreasing with suitable degreaser or solvent cleaning according to SSPC-SP1. The degreased surface shall be further washed with fresh water to remove all traces of thedegreaser chemicals. The surface shall be allowed to thoroughly dry before proceeding with anyfurther coating work. This procedure also applies to all metal surfaces to be coated that do notrequire blast cleaning or power tool cleaning.

Excessive rust scale shall be removed by impact cleaning tools or high pressure water jetting. All bolt holes shall be properly degreased prior to grit blasting.

All edges shall have been ground to a minimum radius of 2 mm; flame cut areas shall have been

ground flush. These and other surface imperfections shall be prepared to Grade P3, ISO 8501-3. Ifthis is not the case, Company shall be informed, and corrective action shall be taken prior to finalsurface preparation.

Offshore maintenance coating projects and tank/vessel internals shall always start with a powerwashing/ steam cleaning/ 2% Teepol (or equivalent) detergent cleaning to remove dirt and saltdeposits. In addition, after a long interval prior to the application of the subsequent layers of a

ti t ft t th f h ll b t l d b f th li ti f th


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All welded areas and appurtenances shall be given special attention for the removal of welding fluxin crevices. Welding spatter, slivers, laminations and underlying mill scale not removed duringfabrication and exposed before and during blast cleaning operations shall be removed by the bestmechanical means and the edges smoothed or rendered flush. These and other surfaceimperfections shall be prepared to Grade P3, ISO 8501-3.

Blasting shall continue a minimum of 25 mm into any adjacent coated areas, and the edges ofexisting coatings shall be feathered. The remainder of the existing coating shall be properly shieldedor protected to prevent any over blast damage.

Blast cleaning shall be to the required visual standard in accordance with ISO 8501-1. The minimumrequirement for successful coating application is Sa 2 ½ at the time of coating.

Stainless steel shall be thoroughly blasted to provide sufficient surface profile to assure goodcoating adhesion. The blasting of stainless steel shall be carried out by abrasive not containing iron,e.g. garnet, aluminium silicate or stainless steel grit.

New hot dip galvanised surface shall be lightly sweep blasted. Surface roughness shall be in therange of 20µm to 30µm or agreed with the paint Manufacturer.

To reduce the risk of unacceptably damaging the substrate while sweep blasting galvanizedsurfaces it is recommended that a reduced nozzle pressure be used in combination with a smallsize abrasive.

No inhibitive solutions shall be used to prevent rusting after blast cleaning.

3.3.2 New Construction and Modifications

The surfaces of carbon and low alloy steelwork for new construction and modification to existinginstallations shall be blast-cleaned to surface cleanliness of Sa 2½ in accordance with ISO 8501-1at the time of coating.

3.3.3 Maintenance Painting

Maintenance painting shall be organized and carried out in accordance with the requirements in thisSES. Requirements for maintenance painting are specified in Section 7.0.

To carry out proper maintenance, all parts of a facility should be made accessible for maintenancepainting operations in consultation with the Company. This should include the removal of insulationand U-bolts, and the lifting of piping from their supports, where practical.

3.4 ABRASIVE BLASTING MATERIALS

General descriptions and standards requirements for abrasive materials are given in Table 1.

Table 1 Abrasives Specification


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Abrasives shall be tested in accordance to tests method specified in ISO 11125 for metallicabrasives and ISO 11127 for non metallic abrasives where applicable. Chloride levels shall notexceed 25 ppm as per test method ISO 11127-7. Maximum allowed conductivity is 25mS/m as pertest method ISO 11127-6. Abrasives shall be free from oil, grease, moisture, salts, dust etc. Re-usable abrasives shall be kept clean, sharp, and free from contaminants.

For full details of acceptance criteria for abrasives, ISO 11124 series and ISO 11126 series shall bereferred for metallic abrasives and non-metallic abrasives respectively.

Abrasives that are classified as a Scheduled Waste under the Environmental Quality Act (EQA)

1974 shall not be used. Sand or other materials producing silica dust shall not be used. The use ofcopper slag as an abrasive is prohibited.

For general dry blasting in local fabrication yards and offshore, recycling of expendable abrasives isnot allowed, unless equipment specific for the purpose is available and in which case the Contractorshall be required to show that the recycled abrasive meets the cleanliness levels of the originalproduct.

3.5 ALTERNATIVE METHODS OF SURFACE CLEANING

3.5.1 General

Alternative methods of surface preparation proposed shall only be used after written approval fromthe Company.

3.5.2 Power Tool Cleaning

Surface preparation using power tools shall only be used when blast cleaning is not practical. Powertool cleaning shall be confined to minor areas.

Manual cleaning shall be performed using mechanically operated tools (grinders, wire brushes,needle guns, etc.) in accordance with ISO 8504-3. Power tool prepared surfaces shall meet surfacefinish grade requirement of St 3 at the time of coating in accordance with ISO 8501-1.

Use of hand tools, such as hand wire brushes, chipping hammers etc. is not permitted.

If the surface being prepared lies adjacent to a coated surface that is not to be refurbished, thepower tool cleaning shall overlap the coated surface by at least 25 mm. The minimum requirementfor successful coating application is St 3 at the time of coating.

Care shall be taken to ensure that the substrate surface does not become polished during powertool cleaning.

3.5.3 Water Jetting

Water jetting may be used for surface preparation where abrasive blasting is not permitted. Waterj tti i t i t d l t i t i ti it d t t f fil


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All surfaces to be recoated shall be cleaned to NACE No.5/ SSPC-SP 12, WJ-2, Very Through orSubstantial Cleaning and shall be recoated at the condition of WJ-2L, Light Flash Rust.

The cleaned surface shall be dry at the time of painting. Only coating systems based on surfacetolerant primers may be used with this technique. Particular care shall be taken to dry areas whichare not self draining.

3.5.4 Wet Abrasive Blast Cleaning

Wet abrasive blasting techniques are similar to those for dry abrasive blasting technique but with a

small amount of water added. Wet abrasive blasting is normally used to avoid dust or where fireand/or explosion risks are present. Corrosion inhibitor shall not be used with the water.

The minimum acceptable surface preparation grade requirement for wet abrasive blasting are WAB10 Near White Blast Cleaning with moderate flash rust (WAB10-M) at the time of painting. Thevisual reference is based on SSPC-VIS 5/ NACE VIS 9. The written standard for near white blastcleaning shall be referred to SSPC-SP10/ NACE No.2 Near White Metal Blast Cleaning.

The cleaned surface shall be dry at the time of painting. Only coating systems based on surfacetolerant primers may be used with this technique. Particular care shall be taken to dry areas which

are not self draining.

3.6 SURFACE PREPARATION FOR SHOP PRIMED SURFACES

All shop-primed surfaces shall be re-blasted to Sa 2½ prior to coating unless otherwise andspecifically agreed with Company.

3.7 SURFACE PREPARATION FOR INTERNAL COATING OF TANKS AND VESSELS

Prior to surface preparation, internal tanks and vessels that have been used shall be pre-cleaned asper section (3.2).

Visible surface imperfections, welds and edges, shall be prepared to Grade P3, ISO 8501-3 prior toblasting. Welds shall be continuous and ground to a smooth rounded contour with a minimum 2 mmradius. Stitch welding is not permitted. Surface preparation is carried out by dry abrasive blastcleaning to surface cleanliness of Sa 2 ½ at the time of coating in accordance with ISO 8501-1.

Surfaces that are not to be coated, such as threads, metal to metal seals, etc, shall be masked orotherwise appropriately protected.

Surface irregularities that cannot be adequately ground shall be corrected either by welding orcaulking. The area to be caulked shall be filled and shaped with compatible caulk, putty or filler. Theputty shall be compatible with the coating material. Coating vendor advice shall be sought on thecompatible putty or filler to be used with the coating system. The use of caulk shall be kept to aminimum.


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4.0 APPLICATION OF COATING SYSTEMS

4.1 GENERAL

In general, the coating systems in this SES cover the application to surfaces prepared by dryabrasive blasting.

Any surfaces to be coated shall be dry and rendered dust free prior to the application of the firstcoat. This can be accomplished by blowing off the surface with clean dry air or by using an industrialvacuum cleaner together with a clean, dry, stiff brush.

The blasted surfaces shall be examined for traces of sludge, oil, grease or other contamination, andtested for the presence of soluble salts. If present they shall be removed by solvent washing or, forsalts, by water washing or steam cleaning, and the areas re-blasted.

To ensure that only correctly blasted surfaces are coated, a minimum of 100 mm around the edgesof prepared areas shall be left uncoated, unless adjoining a coated surface. When adjoining acoated surface, the connection to the existing paint film shall be made as described in this section.

Coatings shall not be applied to edges prepared for field welds or within 50 mm of these edges untilthe field weld is made and inspected.

Blast cleaned surfaces shall be coated with the primer specified within four hours after blasting orwithin such other time limits as may be specified and before any visible rusting occurs. Changes tothe specified time intervals shall require the written approval of the Company representative.

4.2 MIXING AND THINNING

All coating materials shall be thoroughly mixed in a suitable container using a power mixer for a time

sufficient to thoroughly remix the pigment and vehicle. Sufficient agitation to maintain good mixingshall be applied until the product is used. Coatings containing heavy or metallic pigments that havea tendency to settle shall be kept in suspension during application by a mechanical agitator orstirrer.

If during mixing/stirring air is entrapped in the product, sufficient time should be allowed for airbubbles to escape before application is started. This is to reduce the risk of pin-holing in the coatinglayer to be produced.

Only thinners as specified by the paint manufacturer shall be used. Mixing and thinning directions

as furnished by the paint manufacturer shall be followed.

If a coating material requires the addition of a catalyst or hardener, the pot life under applicationconditions shall be clearly stated on the label. The pot life shall not be exceeded. When the pot lifelimit is reached, the container shall be emptied, the material discarded, the equipment cleaned andnew material catalysed.

4 3 OVERCOATING


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4.4 CARBON STEEL/ CRA JOINTS

Where carbon steel components are welded to CRA components, the joint shall be coated with thecoating system specified for the CRA with a minimum overlap of 50 mm onto the carbon steel. TheNDFT requirements for the connected carbon steel pipe shall be applicable.

4.5 INTERNAL COATING OF TANKS, VESSELS

Unless otherwise specified by Company, internal coating shall be continuous across the full flangeface, up to the bolting line.

Ventilation shall be provided during blasting and painting work to ensure both compliance with safeworking requirements and curing of paint.

4.6 APPLICATION METHODS

4.6.1 General

Paint application shall be carried out in strict accordance with the Paint Manufacturer’s

recommendations. Coatings shall be uniformly applied without runs, sags, solvent blisters, dryspray or other blemishes.

4.6.2 Spray Application

Spraying is the preferred method of application.

Lines and pots shall be thoroughly cleaned with the Paint Manufacturer’s recommended cleanerbefore the addition of new materials. Each coat is to be applied uniformly and completely over theentire surface. All runs and sags shall be brushed out immediately, or the paint shall be removed

and the surface re-sprayed.

Before spraying each coat, all areas such as corners, edges, welds, small brackets, bolts, nuts andinterstices shall be stripe coated, usually by brush, to ensure that these areas have at least theminimum specified film thickness.

A complete range of tips with various spray angles as recommended by the Paint Manufacturer foreach specific steel configuration to be coated shall be supplied by the Contractor.

4.6.3 Brush Application

Brush application may be used under the following circumstances:

a) When spraying for any reason cannot properly coat areas.b) In those cases where the Company representative considers that application by other means

will not produce the required finish, will be uneconomical, or may affect other plant,equipment property or personnel in or near the worksite


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Brushes shall be kept in good condition and shall be discarded if damaged or excessively worn.

The brushing shall be done so that a smooth coat, as uniform in thickness as possible, is obtained.

There should be no deep or detrimental brush marks. Paint shall be worked into all crevices andcorners. Runs and sags shall be brushed out. In brushing any of the solvent sensitive type coatings,care must be taken so that no lifting of former coats occurs. During application of each coat allareas such as corners, edges, welds, small brackets, bolts, nuts and interstices shall receiveadditional coating material to ensure that these areas have at least the minimum specified filmthickness and to ensure continuity of coating.

4.6.4 Roller Application

Roller application is not permitted.

4.7 REPAIR OF DEFECTS

4.7.1 General

Before application of any coat of material, all damage to previous coats shall be repaired. All loosepaint shall be removed to a firm edge. All surface irregularities and contaminants shall be removed.Hard, glossy surfaces may require sweep blasting to obtain a suitable surface for painting.

4.7.2 Inadequate Coating Thickness

Areas with an inadequate coating thickness shall be thoroughly cleaned and, if necessary, abradedand additional compatible coats applied until they meet this Specification. These additional coatsshall blend in with the final coating on adjoining areas.

4.7.3 Contaminated Surfaces

Surfaces to be over-coated that have become contaminated shall be cleaned as outlined in Section3.3. The whole of the surfaces to be painted shall then be scrubbed with a 2% Teepol or equivalentdetergent /fresh water solution, followed by copious rinsing with fresh, clean, potable water.

4.7.4 Coating Damage not Exposing Steel Surface

The damaged area shall first be washed down using a 2% Teepol or equivalent detergent /freshwater solution to remove all contamination, then copiously rinsed using clean fresh potable water,and finally be allowed to dry. The coating around the damaged area shall be feathered (over a widthof at least 70 mm) using a dry, abrasive method, preferably grit blasting, to ensure continuity of thepatch coating. The full coating system shall then be reapplied strictly in accordance with thisSpecification.

4.7.5 Coating Damage Exposing Steel Surface

The damaged area shall be re cleaned as originally specified for that item and the full coating


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5.0 QUALITY ASSURANCE AND QUALITY CONTROL

5.1 QUALITY ASSURANCE

5.1.1 Quality Plan for the Implementation of this Specification

Before commencing any work, a written project-specific quality plan shall be submitted for approval.This plan shall include:

a. A timetable for the various surface preparation and painting activities in relation to the total

work to be done,b. A description of the paints and materials to be used,c. Detailed method statement for the coating application worksd. Inspection and Testing Plan (ITP) that details procedures for testing and inspection including

the methods to be used, the frequency of their application, the acceptance & rejection criteria,the extent of inspection required and the parties responsible. Appendix 3 provides examplesof ITPs for various coating works.

e. Full details of the blast and paint equipment and resources including where appropriatedehydration, temperature and any other environmental control measures, available space,methods of access and of handling,

f. Details of the qualification of the personnel involved in the work together with a cleardefinition of their responsibilities and lines of communication,

g. Calibration methods of the inspection equipment

Following review and approval by the Company representative the project quality plan may beupdated and revised during the work, as and when required. All revisions shall be submitted to theCompany representative for approval prior to being included in the quality plan.

5.2 QUALITY CONTROL

5.2.1 General

The Contractor is responsible for the Quality Control activities required by this specification and laid-down in the Inspection part of the agreed Quality Plan.

All inspections and tests (of which the cost are deemed to have been included in the contract) shallbe carried-out by an Inspection Contractor that has been approved by the Company, or by theContractors inspection department, provided the inspection department has been approved by theCompany.

The Contractor shall be responsible for arranging his painting schedule in such a manner as tominimise the risk of damage to coatings during subsequent lifting, transportation, erection orfabrication operations.

The Company representative assigned to the painting work shall be given at least four hours noticeof any changes in schedules. No surface cleaning or painting shall be carried out without his prior


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The Company representative shall have the right to inspect, at all times, any or all of the surfacepreparation and coating activities covered by the contract. All parts of the work shall be accessiblefor this purpose.

5.2.2 Status and Progress Reports

In addition to equipment and manpower lists the Contractor shall daily submit inspection reportsgiving details of weather conditions, air humidity, dew point, temperature, particulars of application,e.g. blast cleaning, paint type and colour, batch numbers applied, wet and dry film thickness,anomalies etc. along with progress of work against the approved programme.

5.2.3 Rejected Work and Equipment

The Company representative shall have the right to condemn any tools, materials, testingequipment, staging and scaffolding, personal protection and equipment protection devices, andenvironmental control equipment, which do not conform to the requirements of this Specification.

The Company representative shall have the right to condemn any surface preparation or appliedcoating system or partly applied coating system that does not conform to the requirements of thisSpecification. Condemned coating application shall be marked in areas with a compatible paint of

contrasting colour. Any condemned equipment, surface preparation or coating application shall bereplaced or corrected to a level in accordance with this Specification, at the Contractor’s cost.

5.3 CLEANED SURFACES

5.3.1 General

Cleaned surfaces shall comply with the requirements as specified in this SES. Surface cleanlinessfor dry blast clean as a minimum shall be Sa 2½ as accordance with ISO 8501-1. Cleaned surfaces

shall be examined for traces of oil, grease or other contaminants. Surface cleanliness requirementfor water jetting and wet abrasive blasting shall be in accordance with Section 3.5.3 and Section3.5.4 respectively.

5.3.2 Residual Salt Contamination

Water soluble salt contamination shall be checked in accordance with ISO 8502-6 and ISO 8502-9.The maximum total allowable soluble salts level on the surface shall in accordance withrequirements stipulated in Table 2.

Table 2 Maximum total soluble salts requirements

Coating Category New construction Maintenance

Internal surfaces of vesselsand tanks

25 mg/m 25 mg/m

External carbon steel surfaces 25 mg/m 50 mg/m

Stainless steel 20 mg/m 20 mg/m


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5.3.3 Surface Dust

The dust level on the blast-cleaned surface at the time of coating shall not exceed quantity- rating 2in accordance with ISO 8502-3. Checks on dust levels shall be made at least once on eachcomponent and once per 100m

2 of prepared surface and a minimum of three checks per day during

progress of the work or as per agreement with the Company.

5.3.4 Surface Profile

All blast cleaned surface shall be checked for surface profile before painting application. The

surface profile shall be measured by the use of replica tape in accordance with ISO 8503-5.

Surface profile checks shall be carried out on each component and at least once per 100m2 and a

minimum of two times per blaster per day during the progress of work. Table 3 below shall be usedto determine the surface profile for steel surfaces unless otherwise specified by the CoatingManufacturer.

Table 3 Relationship between coating thickness and surface profile

Dry Film Thickness of Coating Surface Profile

125 to 200 µm 25 to 50 µm200 to 500 µm 50 to 75 µm

500 µm to 750 µm 75 to 125 µm

Above 750 µm Minimum 125 µm

5.4 COATING APPLICATION AND COATED SURFACES

5.4.1 General Visual Coating Appearance

Complete coating shall be free from defects such as runs, sags, pinholes, voids, bubbles, orangepeel, grit, and dust inclusions or other anomalies.

The coating shall be of good visual appearance and the topcoat shall completely hide the colour ofunderlying layers.

If anti-skid systems are applied, the anti-skid material shall be uniformly dispersed on the surface ofthe coating.

5.4.2 Dew Point, Air Humidity and Substrate Temperature

Unless otherwise recommended by the Paint Manufacturer and accepted by the Company, paintsshall not be applied when:

• The surface preparation has not been completed or oil, grease and dust are present on thesubstrate to be painted

• The surface temperature is less than 3°C above dew point,

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5.4.3 Wet Film Thickness (WFT)

Wet film thickness of the coating shall be checked during the painting operation to ensure correctand even film thickness is applied. The wet film thickness checked shall be carried out accordancewith ISO 2808 Method 1A – comb gauge.

The gauge mark shall be covered immediately to avoid pinholes.

5.4.4 Dry Film Thickness (DFT)

DFT measurements shall be in accordance with ISO 2808. The magnetic ‘banana’ type gauge shallnot be used. Calibration of coating thickness gauges shall be done in accordance with SSPC-PA 2.For magnetic substrates, digital magnetic induction type gauges are required with eddy current typegauges used for non-magnetic substrates,

The measurement requirement shall be in accordance with ISO 19840 Clause 6.1 Table 1.

For the acceptance of an inspected area, the criteria as below shall be fulfilled:

a. The DFT of the completed coating system shall be equal to or greater than the specified

NDFT.b. The DFT reading of any individual coating layer shall be equal to or above 90% of the

specified NDFT. The number of readings between 90% of NDFT and NDFT shall be lessthan 10% of the total number of readings taken

c. The DFT of the individual coating layers shall be maximum 1.5 x the NDFT, except forareas such as corners where overlaps are difficult to avoid. For such areas a maximum of2.5 x the NDFT may be accepted.

5.4.5 Holiday Testing

Holiday testing, also known as pinhole testing shall be carried out in accordance with NACESP01888 for internal tank coatings, external coatings for buried tanks, vessels and piping andsplash zone coatings.

High voltage spark testing shall be used for all coatings unless otherwise recommended by theCoating Manufacturer where a low voltage wet sponge procedure may be used subject to approvalby the Company.

No holidays shall be allowed for the coatings. Defects found shall be marked, repaired and retestedin accordance with this SES.

5.4.6 Adhesion

Adhesion testing shall be carried out between the coating system and steel substrate.

The adhesion testing shall be measured in accordance with ISO 4624 using self aligning adhesiontesting method The minimum pull-off force for coating system with DFT >150 µm is 725 psi (5 MPa)

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5.4.7 Antiskid system for helidecks and walkways

The surface friction coefficient of anti skid coating systems applied to helidecks shall be µ = 0.8.

5.4.8 Inorganic zinc primers

A solvent rub test using Methyl Ethyl Ketone (MEK) in accordance with ASTM D 4752 shall becarried out to ensure inorganic zinc primers are fully cured before over coating.

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6.0 COATING SYSTEMS REQUIREMENT

All coating systems shall be applied in accordance with this Specification and with theManufacturer’s instructions. Any conflicting requirements shall be brought to the attention of theCompany representative.

All coating systems shall be approved in accordance to the requirements specified in this SES.

Only Shell and PETRONAS approved coating systems shall be used. Shell approved and qualifiedcoating systems can be identified through reference to the Shell TAMAP Coating List.

Coating systems which are included under the PETRONAS Approved Coating System and whichhave a current PETRONAS certification may also be used where appropriate.

Where products that have been qualified to PETRONAS Technical Standard PTS 30.48.00.31-P,the Paint Manufacturer shall provide evidence of this in the form of an approval letter fromPETRONAS Coatings and Lining Committee, along with a product datasheet and Material SafetyData Sheet (MSDS), providing the information required by ISO 20340:2009 Clause 5.4 and 6.1.

For coating systems which are neither listed under Shell TAMAP nor are PETRONAS Approved

Coating System, Company advice is to be sought.

Statutory requirements for levels of volatile organic compounds are to be met.

6.1 COATING SYSTEM SELECTION

6.1.1 Service temperature

In general, the design temperature should be taken as the service temperature for selecting acoating system. However, if the design temperature leads to a significantly different coating system

than that required for the anticipated operating temperature, coating system selection may be re-considered. In all such cases, Company’s approval shall be required.

6.1.2 Compatibili ty with Existing Coating Systems

The coating products prescribed by this specification have been selected to be compatible with oneanother. For new construction, modifications and areas under renovation, all coats within thesystems shall be supplied by the same manufacturer.

For spot repair and refurbishment where there will be an interface with an existing coating system,

compatibility with the existing coating system shall be established. The Paint Manufacturer may beconsulted. If there is any doubt about compatibility, patch tests in accordance with ASTM D5064shall be conducted to evaluate the interfacial adhesion.

In general epoxies and polyurethane should not be applied on top of alkyd paints. In exceptionalcases this may be done, but only after a thorough investigation of how the proposed coating systembehaves with respect to softening and adhesion In all such cases the paint Manufacturer shall be

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6.2 COATING MATERIALS

All material shall be supplied in the Manufacturer’s original containers, durably and legibly markedwith the description of the contents. This shall include the product description or identifier, the colourreference number, the method of application for which it is intended, the batch number, date ofmanufacture, the shelf-life expiry date and the Manufacturer’s name or recognized trade mark.

Different brands or types of paints shall not be inter-mixed.

The storage and preparation of paints and other coating materials shall be in accordance with the

Manufacturer’s instructions.

Samples for testing the paint being used may be taken by the Company at any time. Should asample fail to meet the required specification, the Contractor shall remove this paint from areasalready covered and recoat them with paint that meets the specification.

Paint that has exceeded its shelf life shall not be used without written approval by the PaintManufacturer and agreement by Company.

6.3 COATING SYSTEM PRODUCT APPROVAL REQUIREMENT

6.3.1 New Product - Coating System Qualification

Where new coating products and/or upgraded versions of currently approved products (e.gformulation changes etc) are to be used, these shall be submitted for a series of full qualificationtests before they can be considered an approved product. The test requirements and acceptancecriteria are as described in DEP 70.48.11.30-Gen.

6.3.2 New Product s - Internal Coating System Qualification Requirements for Pressure Vessel

Specific testing protocols shall be developed for the qualification of internal coatings for pressurevessels which shall include all or parts of this specification along with specific testing such ascoating performance under decompression cycles etc. The Company’s coating specialist shall beconsulted for further advice.

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6.4 PAINTING AND COATING SYSTEM SCHEDULES FOR EXTERNAL APPLICATION

6.4.1 Carbon Steel and Low Alloy Steels Maximum Operating Temperature < 120°C

Table 4 Coating systems for carbon steel and low alloy steels for Non-Insulated systems inthe Atmospheric Zone

Type of paintingwork

SystemCode

Coating Systems DFT ( m)

Non- Insulated systems in Atmospheric Zone

Minimum Surface Preparation: Blast Cleaning to ISO- 8501-1, Sa 2½

New and MaintenancePainting

1A Primer Epoxy Zinc Rich 75

Midcoat High Solids Epoxy 150

Topcoat Aliphatic Polyurethane 50

Total NDFT 275

Minimum Surface Preparation: Power tool cleaning to ISO 8501-1, St 3

Maintenance Painting 1B Primer Surface Tolerant High SolidsEpoxy 125

Midcoat Surface Tolerant High SolidsEpoxy

125

Topcoat Aliphatic Polyurethane 50Total NDFT 300

Al ternat ive Coating System for sweating pipe work (refer Note 1)

Minimum Surface Preparation: Wet abrasive blasting to SSPC-SP 10/NACE No.2, WAB-10

Maintenance Painting 1C Primer Surface Tolerant High SolidsEpoxy

150

Topcoat Surface Tolerant High SolidsEpoxy

150

Total NDFT 300

Note for Table 4:1. Note that only epoxy coating systems that have been qualified to be able to be applied over

damp surfaces shall be used.

Table 5 Coating systems for carbon steel and low alloy steels for Insulated systems in the Atmospheric Zone


SystemCode

Coating Systems DFT (

m)

Insulated systems in Atmospheric Zone



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Total NDFT 250 6.4.2 Carbon Steel and Low Alloy Steels with Operating Temperature > 120°C

Table 6 Coating systems for carbon steel and low alloy steels for insulated and non-insulated in the Atmospheric Zone

Type of PaintingWork

SystemCode

Coating Systems DFT(

m)

Insulated and Non-Insulated Systems in Atmospheric Zone (120˚C - 200˚C)



3A Primer Epoxy Phenolic 100

Topcoat Epoxy Phenolic 100

Total NDFT 200

Insulated and Non-Insulated Systems in Atmospheric Zone (200˚C - 450˚C)

Minimum Surface Preparation: Blast Cleaning to ISO- 8501-1, Sa 2½New and MaintenancePainting

3B Primer Inorganic Zinc Silicate 75

Midcoat Silicone Aluminium 25

Topcoat Silicone Aluminium 25

Total NDFT 125

6.4.3 Steel Structures / Members (Primary and secondary including boat landing and caissons)in All Zones (Splash, Spray and Atmospheric Zones); Risers above Splash Zone, pipingequipments in Spray Zone.

Table 7 Coating systems for steel structures in all zones, risers above the Splash Zone andpiping and equipments in the Spray Zone


SystemCode


m)

Minimum Surface Preparation: Blast Cleaning to ISO- 8501-1, Sa 2.5


4A 1st Coat Polyester Glassflake 500

Top Coat Polyester Glassflake 500

Total NDFT 1000

4B 1st Coat Epoxy Glassflake 500

Top Coat Epoxy Glassflake 500

Total NDFT 1000

6.4.4 Offshore Platform Decks and Helidecks



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Top Coat Epoxy Glassflake 400 Antiskid Aluminium Oxide 20-30 mesh

Total NDFT 800

Table 9 Coating systems for non-aluminium helidecks


SystemCode




5C 1st Coat Zinc rich primer 502

n Coat High solids epoxy 300

Antiskid material

Topcoat Epoxy or Polyurethane 100

Total NDFT 450

Coating system for aluminium helidecks shall be as for galvanised steel coating system as perSection 6.4.5 below. Company may permit the decks to be left unpainted. However, additionalmeasures may be required for the markings to be conspicuous.

For topsides helideck layout/painting for offshore, please refer to drawing no STD.S.2340 andSTD.S.2341 in SES 95.4 Helidecks on Fixed and Mobile Offshore Installations.

6.4.5 Galvanised Steel

Table 10 Coating system for galvanised steel


SystemCode


Minimum Surface Preparation: Degrease as per SSPC-SP1 and wash with fresh clean water,

lightly sweep blast to provide surface profile of between 20μm to 30μm

New Painting 6A 1st Coat Surface Tolerant High SolidEpoxy

125

Top Coat Aliphatic Polyurethane 50

Total NDFT 175

General Notes for Table 10:

1. Hot Dip galvanising shall be carried out in accordance with the requirement of ISO 1461.2. Maintenance for galvanised steel should be treated as carbon steel under section 6.4.1

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6.4.6 Stainless Steel

Where Thermal Sprayed Aluminium coatings are specified, reference shall be made to DEP30.48.40.31-Gen.

Table 11 Painting and Coating Guide for Stainless Steel

TemperatureRange

Condition Martensitic /

Ferritic Austenist ic Duplex

˃100°C Insulated TSA TSA TSA

Non-Insulated

TSA TSA TSA

Insulated 7B TSA 7B

50°C to 100°C Non-Insulated

7A TSA 7A

Insulated 7B 7B 7B


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6.4.7.2 Initial and Maintenance Painting for Bottom Plate

The underside of external tank bottom plates shall always be coated. The coating system is as perTable 13.

Table 13 Coating systems for tank bottom plate.


SystemCode


m)

Minimum Surface Preparation: Blast cleaning to ISO 8501-1, Sa 2½


8A 1st Coat Amine Adduct Epoxy 100

2n

Coat Amine Adduct Epoxy 100

3r


Total NDFT 300

General Note for Table 13:1. The coating system above may be applied in 2 coats, each 150µm

6.4.8 Timber Decks

Table 14 Coating systems for timber decks.


SystemCode


m)

Minimum Surface Preparation: Light sanding to remove contaminant, sharp edges and old paints


9A 1st Coat Aluminium Wood Primer 50

2n

Coat Alkyd Semi-Gloss Finish 50

Top Coat Alkyd Semi-Gloss Finish 50

Antiskid Aggregate

Total NDFT 150

6.4.9 Markings

Table 15 Coating systems for markings

Type of painting

work

System

Code


Minimum Surface Preparation: Degrease and wash with clean fresh water. Abrade surface toprovide mechanical key

Marking 10A Aliphatic Polyurethane 50Total NDFT 50


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6.5 PAINTING AND COATING SYSTEM SCHEDULES FOR INTERNAL APPLICATION

6.5.1 Internal surfaces of tanks and vessels, with service temperature up to 60°C

New and maintenance painting for tanks and vessels containing:- Drinking water/ potable (see General Notes 1)- Seawater, brackish water, service water, slops- Condensate, air receiver, diesel tanks, crude oil- Pressurized vessels (see General Notes 2)

Table 17 Coating system for tanks and vessels (all sur faces)


SystemCode


m)



12A 1st Coat Amine Adduct Epoxy 100

2n


3r


Total NDFT 300

General Notes for Table 17:1. The paint supplier shall submit a valid health certificate for the epoxy paint system in drinking

water service2. For pressurize vessel, Company’s advice shall be sought.3. Contractor/Vendor may propose alternative coating systems but these shall be subject to

Company’s approval.4. The coating system may be applied in 2 coats, each 150µm.

6.5.2 Methanol storage tank, storage temperature maximum 40˚C

Table 18 Coating system for internal surfaces of methanol storage tanks


SystemCode



New Painting 13A 1st Coat Inorganic zinc silicate 75

Total NDFT 75



13B 1st Coat Epoxy Phenolic 125

2n

Coat Epoxy Phenolic 125

Total NDFT 250


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Internal coating system for service temperature > 60˚C



14B 1st Coat Vinyl Ester Glassflake 500

2n

Coat Vinyl Ester Glassflake 500Total NDFT 1000

Where internal tank coatings are required above the temperatures stated above, Company’srecommendations shall be sought.

6.6 COATING SYSTEM FOR VENDOR SUPPLIED EQUIPMENT

Equipment supplied by Vendors such as valves, pumps, etc. shall be externally coated with acoating system consistent with the requirements of this SES. Vendors may propose alternativecoating systems, however these shall be consistent with the requirements of ISO 12944-5,Exposure Classification C5-M for external exposure and C3 for interior surfaces, DurabilityClassification – High. In addition, the Vendor shall be required to provide a track record for thecoating systems proposed. All shall be subject to Company’s approval.

Vendor shall propose coating systems for subsea components. The coating systems offered shall

have a demonstrable track record at the specified service temperatures and shall be subject toCompany’s approval.

6.7 COATING SYSTEM FOR STUD BOLTS AND NUTS

6.7.1 General

All carbon steel stud bolts and Nuts shall be coated with a zinc nickel electroplated coating systemin accordance with ASTM B 841 with a minimum Ni content of 12 mass %, balance being zinc and

PTFE top coat. Others specific requirements, which are a supplement and amendment to ASTM B841, can be found in MESC SPE 81/007.

There are local vendors in Malaysia that can apply the required coating for bolts and nuts. Companyshall be consulted for further information.

Bare carbon steel nuts and bolts shall not be permitted for use with CRA flanges or components.

6.7.2 Coating System

The coating specification for stud bolt and nuts is tabulated in Table 20.

Table 20 Coating specification for stud bolt s and nuts onshore and offshore location

Coating system

First Coat Zinc/ Nickel Electroplated, with a minimum of12% Nickel balance being Zinc


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7.0 MAINTENANCE PAINTING

7.1 GENERAL

In general, maintenance painting consists of two types of activity:

1. Large-scale maintenance which is refurbishment and renovation, necessary because theexisting coating has deteriorated or failed and the technical integrity or safety of theequipment is impaired. In this case local repairs are not economically justified and the onlyoption is to apply a new paint system.

2. Localised repair work to rectify damage to a coating caused by corrosion, ageing,modification, hot work, mechanical damage, etc.

Maintenance painting purely for the sake of appearance is not considered an economically justifiedcriterion within the context of this Specification.

To determine how and to what extent any damage to a coating should be repaired, it is necessaryto:

1. Establish the amount of corrosion present

2. Establish the type and extent of paint defects present3. Select an appropriate repair procedure, which includes:

- surface preparation,- choice and specification of coating system,- application,- testing and inspection.

7.2 CORROSION CRITERIA FOR RUSTING

To establish the amount of corrosion occurring on carbon and low alloy steels; reference shall be

made to the degrees of rusting defined in ASTM D610.

The approach for stainless steels is given in (7.5).

Degree of rusting and area rusted are given in Table 21 for reference.

Table 21 Degree of rusting and area rusted in accordance with ASTM D 610

Rust Grade Area Rusted (%) Spot (S) General (G)

10 0.01 None None

9 0.03 9-S 9-G

8 0.1 8-S 8-G

7 0.3 7-S 7-G

6 1.0 6-S 6-G

5 3 0 5 S 5 G


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The acceptance criteria are Degree of Blistering 3 (S3).

This phenomenon alone shall not be used as a criterion for urgent maintenance painting providedthat the coated surface rusting and blistering is still within requirement in Section 7.6.

7.4 CRACKING, FLAKING AND CHALKING

The degree of cracking, flaking and chalking in a coating shall be evaluated in accordance with ISO4628-4, ISO 4628-5 and ISO 4628-6, respectively.

This phenomenon alone shall not be used as a criterion for urgent maintenance painting providedthat surface rusting is still within requirement in Section 7.6.

7.5 STAINLESS STEEL SUBSTRATES

The necessity to carry out maintenance painting on stainless steel surfaces shall be governed by avisual judgment of the existing coating (including the condition of any insulation) since "degree ofrusting" is not a relevant criterion for these substrates.

7.6 TYPES OF MAINTENANCE

7.6.1 Preventive Cleaning

Periodic removal of all contaminants, e.g. salts, dirt, grease, oil, etc., by hosing with fresh water issufficient if the coating is contaminated but no breakdown or corrosion is observed (i.e. Rust Grade10). If needed, a 2% Teepol or equivalent concentrated detergent may be used. If conductedregularly this will reduce the impact from the environment and result in longer maintenanceintervals.

7.6.2 Spot Repair

Spot repair should be considered if the coated area has localized (spot) rusting only and theremaining film is sound adequate. The rusting pattern should be less than rust grade 5-S (3%) spotrusting and/ or less than rust grade 7-G (0.3%) general rusting in accordance with ASTM D610.

The areas that are corroded shall be spot blast cleaned to the visual standard PSa 2½ ina

Documents

SES 47.1 Protective Coatings Specification Rev 08