Lpg - Manual Gaze Inerte

TECHNICAL DATA

Manual for Installation, Maintenance and Use of LPG INERT GAS Fire Extinguishing Systems

LPG Tcnicas en Extincin de Incendios S.A. DOC: MU/IG/02/IN Rev: 0 Pag: 1/109

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Original date of issue of document Feb 2005. CHANGE CONTROL LIST.

Page Paragraph Modification Date Author


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INDEX

0 INTRODUCTION ......................................................................................................5

1 BASIC ISSUES ........................................................................................................6

2 INSTALLATION .......................................................................................................8

2.1 Mechanical/ Pneumatic Installation .............................................................................................................9 2.1.1 Support System ..........................................................................................................................................10 2.1.2 Storage System ..........................................................................................................................................17

2.1.2.1 LPG 128-60/80 and LPG128-65/85 (Data Sheet FT149, FT148, FT125 and FT147) ......................18 2.1.2.2 Pressure switch..................................................................................................................................21 2.1.2.3 Pressure Gauge..................................................................................................................................22 2.1.2.4 Manifold discharge pipe....................................................................................................................23 2.1.2.5 " Check valve (Data Sheet FT 55)..................................................................................................24 2.1.2.6 High pressure auxiliary cylinders......................................................................................................25 2.1.2.7 Discharge hose 4S-H (Data Sheet FT 110) .......................................................................................29 2.1.2.8 Pressure switch with locking device (Data Sheet FT 047) ................................................................30 2.1.2.9 Restrictor (Data Sheet FT 138) .........................................................................................................31

2.1.3 Release System ..........................................................................................................................................33 2.1.3.1 Pressure pilot cylinder and pilot valve (Data Sheet FT 052).............................................................34 2.1.3.2 LPG 128-90 Valve (refer to Data FT 132) ........................................................................................36 2.1.3.3 Manual lever release (Data Sheet FT 051) ........................................................................................37 2.1.3.4 Solenoid Valve (Data Sheet FT 017) ................................................................................................39 2.1.3.5 Pneumatic release cones (Data Sheet FT 058) ..................................................................................41 2.1.3.6 Decompression screw (Data Sheet FT 070) ......................................................................................43 2.1.3.7 Decompression Valve (Data Sheet FT 075)......................................................................................44 2.1.3.8 Release line Teflon flexible hoses (Data Sheet FT 040) ...................................................................45 2.1.3.9 Pipe and fittings.................................................................................................................................46 2.1.3.10 Supports ........................................................................................................................................46 2.1.3.11 Nozzles (Data Sheet FT 135 / FT 136) .........................................................................................50

2.2 Electrical Installation...................................................................................................................................52

2.3 Installation final requirements....................................................................................................................53

3 COMMISSIONING AND MAINTENANCE..............................................................54

3.1 System commissioning and reception .........................................................................................................54 3.1.1 Component revision ...................................................................................................................................54 3.1.2 Commissioning operations and operation tests. .........................................................................................55

3.1.2.1 Blow out with nitrogen......................................................................................................................55 3.1.2.2 Water tightness pneumatic test for open pipes. .................................................................................56 3.1.2.3 Operating Test for pressure switch with locking device. ..................................................................57 3.1.2.4 Release circuit water tightness test....................................................................................................58 3.1.2.5 Operating test for pilot cylinder release solenoid valves...................................................................60

3.1.3 Inspection and test for protected enclosure integrity..................................................................................63

3.2 Maintenance..................................................................................................................................................64


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3.3 Manual use of devices...................................................................................................................................66 3.3.1 Re-assembly of pressure switch with locking device.................................................................................66 3.3.2 Actuation of manual lever release and manual pneumatic release.............................................................67 3.3.3 Release line decompression .......................................................................................................................67

3.4 Actuation in the event of failure of fire extinguishing system automatic activation...............................69

3.5 Actuation after cylinder bank discharge ....................................................................................................70 3.5.1 Maintenance program for fire fighting material means..............................................................................97 3.5.2 Maintenance program for fire fighting material means..............................................................................98


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0 Introduction This manual is intended for fitters, maintainers and users of the INERT GAS fire extinguishing systems manufactured by LPG Tcnicas en Extincin de Incendios, S.A.. It contains the instructions for the proper installation, use and maintenance of the systems.

IMPORTANT

All the information herein contained is property of LPG Tcnicas en Extincin de Incendios, S.A. The company is entitled to introduce modifications without giving any prior notice. Reproduction, modification, partial or whole translation for other purposes than internal use is prohibited. All the efforts have been made to assure the exactness of the information herein included. However LPG does not assume any responsibility for its use. Anyone who uses this manual does it at at his/her own risk and assumes any consequence. Any questions regarding the information presented herein should be forwarded to:

LPG Tcnicas en Extincin de Incendios, S.A. C/ Mestre Joan Corrales, 107-109

08950, ESPLUGUES DE LLOBREGAT Barcelona ESPAA Fax: +34 93 473 74 92 Tel: +34 93 480 29 25

e-mail: [email protected]


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1 Basic Issues The systems manufactured and designed by LPG for fire extinction by means of INERT GAS are conceived to be solid, reliable and easy to assemble, thus allowing the checking of their operative status by means of easy check operations included in this manual. However LPG Tcnicas en Extincin de Incendios, S.A. wishes to explain the following issues: Every single person who deals with the start-up, inspection, checking and maintenance of the systems must be

well trained in order to perform the different checks. LPG always recommends the adoption of safety work practices according to the legislation in force on health and safety procedural issues. It is also advisable for the personnel in charge of the installation and maintenance of the fire extinguishing system to receive some training on the safety area as well as to carry out both a complete and careful reading of this manual before engaging into any of the described operations.

Every single person who works in a monitored zone protected by INERT GAS must be informed of the fire

extinguishing agent properties and its possible effects both on people and protected goods. The personnel who work in the monitored zone must be instructed on how to proceed in the event of a possible alarm and in the different types of systems activation.

Throughout the installation and maintenance operations the workers must wear industrial clothing and safety

footwear. When necessary a helmet and gloves must also be worn. Whenever the workers are to drill holes for the pipe supports or for the positioning of the cylinder racking brackets, it is also compulsory the use of safety goggles or a mask. This protection is also applicable when some operations are to be carried out which may cause shedding of particles.

Due to possible false alarms of the detection system (if any) produced by the dust or the smoke caused by

installation works, the detection system of the area shall be either isolated or disconnected before and during the assembly operations.

The whole equipment and piping network must be installed according to the project design. Any modification of

the design must be approved in writing by the client and the responsible engineering company. The construction drawings must be corrected. The corrections to be submitted shall include the modifications in the project.

When moving the cylinder make sure that the valve protection cap is always firmly and tightly secured.


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Use one or some of the following materials as thread sealing elements: Thread sealing compound for 0.4 mm clearance. Teflon tape. Regardless of the sealing element used do not ever cover the first two screw threads in order to assure the cleaning of the inside part of the piping network.


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2 Installation During the assembly of the system it is advisable to always use the installation drawings supplied with the delivery of components. As an example the plans of the following system types are included in the Appendix I: Battery type 80 I INERT GAS 7 cylinders base (plan number 520098AR) Battery type 140 I INERT GAS 3 cylinders base (plan number 520094AR) All of these drawings describe the LPG INERT GAS standard rack system. In these plans it is possible to see the layout of the system cylinder rack, the connection of the simple release system and the layout of the standard support systems. The drawings are included only as an example, therefore those facilities to have specific drawings should be guided by their own ones. Proceed to check against the plans and the materials lists whether all of the components have been supplied. Check also whether any of the components are damaged. Any defective component must be replaced. Examine the position of the cylinders and the pipe sections in the drawings and check that no physical barriers are to be found which require some modification of the cylinders, the brackets or the pipe sections. The project engineer must be informed of any deviation with respect to the drawings. Previous to begin with the assembly of the installation verify the position of the battery (it is usually indicated in the plans). The most advisable position of the battery is the nearest room, although it should be away from the protected risk. It should also be large enough to house the equipment as well as to make possible the assembly and maintenance operations. The equipment must not be exposed to severe climatologically conditions, direct action of the flame or to a too humid environment. It must be located away from unauthorized handling and mechanical or chemical aggressions. Material to be required to install the equipment: Teflon tape, 0.4 mm joint sealing compound Set of ring spanners (6 to 22 mm) Adjustable spanner Hand electric hammer drill Hacksaw Drills (intended for work materials) Ladders, scaffolding Spirit Level Flexometer Philips and flat head screwdriver set Multimeter Set of Allen keys Clamps, pliers Pipe cutters M.12 plugs appropriate for the fixing surface Note: In order to carry out the equipment assembly at least two workers will be necessary.


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2.1 Mechanical/ Pneumatic Installation The LPG INERT GAS centralized systems are divided into 4 systems: Support system Storage system Release system Distribution system In the following sections you shall find both a description of the components to each system and the explanation on how to perform their assembly. The order in which the components are described is also the order in which they must be installed.


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2.1.1 Support System Description: Metallic structure composed of a plateholder (bracket) to support the cylinders and the manifold block. The brackets for 80 litre cylinders have side columns. The brackets for 140 litre cylinders do not have columns, therefore their structure should be attached directly to the wall. Assembly: On carrying out the installation it is important to take the following issues into consideration: Sweep the floor on which the battery will be assembled. Make sure by checking against the sizes which

appear on the drawing that the rack system fits perfectly in the chosen position. The floor on which the bracket will be assembled must be as flat as possible. The wall where the bracket will be fastened (in case it should be necessary) must be at right angles to the

floor and it will be solid (avoid partition walls, Pladur or similar ones). In the event of having to fasten the bracket to a partition wall it will be necessary to prepare some iron plates

which shall allow fastening of the bracket from the other side of the wall as shown in the picture:

The assemupon the c

LPG Tcnicas NUT

SUPPORT IRON PLATE

PARTITION WALL

M.12 SCREW

BRAKET

bly of the brackets and the position of the manifold depends upon the bracket having side columns and onnection to the piping network being horizontal or vertical.

en Extincin de Incendios S.A. DOC: MU/IG/02/IN Rev: 0 Pag: 10/109

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The steps to follow are the following: Assembly of brackets with a vertical support column: (see fig. 2.1.1.1. and 2.1.1.2) 1. Carry out a preassembly of the bracket by joining the back sleats (1) with the column (6). 2. When dealing with rack systems with more than 8 x 80 litre cylinders the central column (9) should also be

assembled. 3. The hexagonal brackets (4) are normally delivered assembled to the sleat. If this is not the case assemble

the hexagonal brackets to the sleat by using the iron gates (2) and the nuts (3) that have been supplied. Arrange the rubber guards (5) to protect the cylinders from any rubbing.


Fig. 2.1.1.1. 9 cylinders aligned with a straight 80 litre INERT GAS bracket

6

3

25

1

7

4

8 9

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4

1

6

Fig. 2.1.1.2. 4 cylinders aligned with a straight 80 litre INERT GAS bracket. 4. Bring the bracket joint close to the wall of the area that has been chosen. 5. Screw in the restrictor (10) of the figure 2.1.1.3. to the supply network inlet pipe. 6. Screw in a high-pressure elbow (not supplied by LPG) to the restrictor. The connection to the outlet manifold

(16) must be performed by means of a high-pressure flexible connector.


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7. Position bracket allowing adequate distance for connection of manifold (16) to elbow. The following sketch (fig. 2.1.1.3) shows accurate distance between manifold and bracket:

Fig. 2.1.1.3 Sketch showing manifold mounted on bracket provided with

vertical support.

8. Mount manifold pipe (11) onto manifold seats (7). Do not tighten manifold, hold it by means of manifold "U" fixation (8), allowing freedom of movement.

9. Mount the two check valves (13) which occupy both ends of manifold. Apply thread sealing compound suitable for 0.4 mm gaps or Teflon tape to manifold pipe thread connection onto connection where the check valve is fitted , take care not to apply same to the two first threads. Place check valve onto manifold. Check valve arrow must point at manifold, never at cylinder. Tighten union firmly using a fixed wrench.

10. Connect discharge hoses to check valves. Apply Teflon tape to union being careful not to apply same to the two first threads.

11. Place onto the brackets the two bank cylinders which are further apart from each other. To avoid damages in case cylinders are dropped by accident, place front hexagonal bracket,(4) prior to removing cylinder


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protection caps. Do not tighten so as to allow cylinder freedom of movement. Remove protection caps from both cylinders. Remove both cylinder head caps (15) for safety reasons to prevent accidental activation.

NOTE: VALVE PROTECTION CAP MUST ALWAYS BE INSTALLED WHENEVER A CYLINDER IS BEING TRANSPORTED.

12. Connect cylinder valves to discharge hoses. Connection between valve and hose does not require any

sealed element. Connection shall be carried out without forcing or twisting hose. Once connection is performed on both cylinders, accurate manifold position is obtained in relation to fixing brackets, so it is possible to proceed manifold final fixing onto its seats (7) by tightening manifold "U" fixation (8).

13. Connect manifold free end (16) to high pressure elbow (see fig. 2.1.1.3). Verify position of all parts installed on the bracket (cylinders, discharge hoses, manifold, bracket, elbow, restrictor and pipe system). Arrange position of parts as required prior to final fixation.

14. Mark anchored points on the floor and wall. It is possible to drill using as a guide bracket mechanised fixing drills. Fix bracket onto its final position. High-power chemical or metallic fixing plugs shall be used for floor and wall fixing. Do not use plastic plugs. If the wall is not strong enough, apply mounting in accordance with explanation in 2.1.1 Support System.

15. Tighten hexagonal brackets (4) pertaining to the two cylinders installed and check accurate component position.


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Mounting of brackets without vertical support: (see fig. 2.1.1.4 and 2.1.1.5) INERT GAS Bracket type 140 I.

3

1

2

4 5

Fig. 2.1.1.4 Bracket without columns suitable for 3 cylinders 1. Thread restrictor (7) in fig. 2.1.1.5 onto distribution system inlet pipeline. 2. Thread onto restrictor a high pressure elbow ( not supply by LPG). Connection at connector outlet (8) shall be

performed by means of high pressure free rotary coupling. 3. Place the two line of top and bottom brackets (1 & 2) on the floor, touching fixing wall, and in their working

position according to foreseen positions in fig. 2.1.1.5. In case of cylinder banks comprising 7 or more cylinders using several transverse brackets (1 & 2), join one after the other to determine distance between cylinders at end of cylinder bank and manifold:


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Fig. 2.1.1.5 Sketch showing mounting of manifold on brackets without vertical support

4. Place straps (3) on cylinders at ends of cylinder bank located onto the brackets (the shorter threaded end is

mounted on the transverse bracket). In the case of cylinder banks comprising more than 7 cylinders and using several transverse brackets (1 & 2),also place at least rods of 1 cylinder for each set of transverse brackets.

5. Place cylinders located at manifold ends. In the case of cylinder bank of more than 7 cylinders (1 & 2) place at least 1 cylinder for each set of transverse brackets.

NOTE: VALVE PROTECTION CAP MUST ALWAYS BE INSTALLED WHENEVER A CYLINDER IS BEING TRANSPORTED.


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6. Raise transverse brackets up to the height indicated in sketch (fig. 2.1.1.5). 7. Tighten firmly straps (3) (fig. 2.1.1.4) in such a way that transverse brackets and cylinders make up a solid

assembly. 8. Lean assembly on wall, checking accurate position for connection to manifold outlet elbow. 9. Mount manifold (8), check valves (9) pertaining to cylinders placed on brackets. To mount, add sealing

compound or Teflon tape to manifold pipe thread connection where the check valve is fitted. Do not apply same to the two first threads. Place check valve onto manifold taking care that check valve arrow points at manifold, never at cylinder. Tighten union firmly using a fixed spanner.

10. Place discharge hose (10), pertaining to cylinders mentioned above, onto check valves mounted previously. Tighten with a fixed wrench. Connection between discharge hose and check valve requires Teflon tape.

11. In accordance to drawing data, fix manifold seats to wall (4) using metallic or chemical plugs. 12. Raise discharge manifold and place onto manifold seats (4). Fix using manifold U fixation (5). Do not tighten.

Allow manifold free movement. In the event of cylinder banks comprising a large number of cylinders and one single manifold, the latter shall be of a large diameter. Mechanical help shall be necessary for its mounting. Use pulleys or any other type of crane required by such operations.

13. Remove cylinder protection caps. 14. Connect discharge hoses to cylinder valve. Now manifold is accurately positioned in relation to cylinders. 15. Check position of all elements : cylinders, discharge hose, manifold, brackets, elbow, restrictor and pipeline

system. Arrange position of components prior to final bracket fixation. 16. Connect manifold (8) to restrictor elbow union. 17. Fix discharge manifold (6) onto its seats (4) and butt tighten manifold U fixation (5). 18. Mark transverse anchored points on the wall. It is possible to drill using as a guide mechanised fixing drills on

back transverse bracket. Fix bracket into its final position. High-power chemical or metallic fixing plugs shall be used for fixation. Do not use plastic plugs.

2.1.2 Storage System Composed of an assembly of steel cylinders containing extinguishing agent (called auxiliary cylinders), discharge valves and discharge manifold. Although they are not included in examples shown in Annex 1, there is a possibility of installing more than one discharge manifold and cylinder assemblies in groups of 12 or more cylinders in rows of 4 or 5 elements. The assembly is complemented with several control and auxiliary components. Components comprising an INERT GAS storage system described below. The sequence to follow for mounting is the same as the order described below.


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2.1.2.1 LPG 128-60/80 and LPG128-65/85 (Data Sheet FT149, FT148, FT125 and FT147) Description:

Figure 2.1.2.1 LPG Valve Model 128 Valve installed directly onto auxiliary bank cylinders. In the event of cylinder banks, activation may only be pneumatic requiring a source of external pressure (pilot cylinder). Differential opening valve. Pneumatic activation subject to pneumatic release cone connected to port (1). Supplied with pressure gauge that fulfils EN 837 (2) and pressure switch (3) calibrated at 170 bar (for LPG128-60/80) or at 240 bar (for LPG128-65/85). A safety disk (4) against over pressure rated at 270 bar (for LPG128-60/80) or at 400-420 bar (for LPG128-65/85) is incorporated.


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To prevent uncontrolled accidental discharges during installation or maintenance operations or handling of valve, remove head cap (5) and place plug on outlet port (7).This simple operation prevents risks, such as in case of accidental discharge, orifice (6) will drive gas from cylinder to environment in a controlled way, instead of through valve outlet (7). Safety disk cap (10) is also perforated thus allowing controlled gas discharge in case over pressure bursts safety disk. Mounting: Valve is delivered mounted onto auxiliary cylinder. Do not try to dismantle any of incorporated accessories. Mounting of elements associated (discharge hose (7) and release device (1) shall be installed later, following the order they are described. NOTE: VALVE UNION WITH PRESSURE GAUGE AND PRESSURE SWITCH IS FIXED. DISMANTLE IS NOT ALLOWED. NEVER TRY TO DISMANTLE SAME. NOTE: FOR ANY INSTALLATION OR MAINTENANCE OPERATION, VALVE HEAD CAP (5) MUST REMAIN DISMANTLED AS A SAFETY MEASURE. WHEN ANY MOUNTING, MAINTENANCE OR TEST OPERATION IS FINSIHED, DO NOT FORGET TO REPLACE HEAD CAP, HAND TIGHTEN, CHECK THAT HEAD CAP "O" RING IS MOUNTED IN ITS INTERIOR. LPG 128 Valve functional protocol. LPG 128 Valve makes use of cylinder internal pressure for opening .

The only way to activate valve is by making the Piston move downwards (11).

Closed Opened

CYLINDERPRESSURE

CYLINDER PRESSURE

DISCHARGE

PILOT PRESSU

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When valve is at rest, pressure remains retained by closing element (12) and release disk (8) . Release pneumatic cone (13) incorporates in its interior a protactor piston (14). When pressure released by cylinder approaches back of protactor piston (14), same is displaced until release disk (8) bursts. At that moment pressure retained by release disk is released and driven over piston (11). Because surface relation between piston (11) and closing element (12) is 3:1, piston moves downwards thus, opening the valve. Dimensions: Valve gas inlet: ext 1 int or 21 mm Valve gas outlet: ext int 18 mm Height: 155 mm Weight: 1.6 kg Pressure switch connection thread: ISO 228 Pressure gauge connection thread: M 10 x 1 Hand lever connection thread: M 30 x 1.5 Solenoid connection thread: M 36 x 1.5 Working Pressure: Max. Working Pressure LPG128-60/80: 240 bar Max. Working Pressure LPG128-65/85: 370 bar Functional Pressure: 60 bar Containers: LPG 128 valves can be used in the following INERT GAS containers:

Valves Container Volume [l] Fill ratio [kg/l] 80 200 bar at 15C

LPG 128-60/80 140 200 bar at 15C 80 300 bar at 15C

LPG 128-65/85 140 300 bar at 15C

Other container sizes are allowed if the maximum filling pressure is the stated on the table as maximum.


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2.1.2.2 Pressure switch The Pressure switch are currently used as a control device. It can give or cut an electrical signal when pressure changes are detected into cylinders. This component will be delivered already mounted by LPG. In any case should these component be replaced or manipulated by other than LPG personnel. Pressure switch to be installed shall fulfill valve connection as shown on data sheet FT 145 (see Annex 1). Connection shall include a Metal-Buna joint. Working Pressure: Working Pressure: 370 bar


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2.1.2.3 Pressure Gauge T/W pressure gauge is used for control the internal pressure of cylinders. It also acts as by-pass valve to allow connection of cylinder internal pressure to activation devices. In such cases where pressure gauge is not installed there should be a blind tape to fulfill the by-pass performance. In any case these components will be delivered already mounted by LPG. In any case should these components be replaced or manipulated by other than LPG personnel. Pressure gauge shall fulfils DIN EN 837 Class 1.6 minimum. Valve connection shall fulfill data sheet FT 046 (see Annex 1). Connection shall include a Nitrile O-ring 8x3 mm. LPG128-60/80 valves incorporate a 0-315 bar gauge and LPG128-65/85 valves incorporate a 0-450bar gauge


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2.1.2.4 Manifold discharge pipe Description: Pipe where contents of all bank cylinders is discharged and which directs extinguishing gas to appropriate pipe system. Made of black steel pipe in accordance with ASTM. Nominal diameter between " and 2". SMAW welding process under approved procedure. Tested at 300 bar. Painted in black. Threaded outlets for connections to piping system (1), threaded inlets (2) for check valve connections and also for pressure switch with locking device (3).

Figure 2.1.2.4 Discharge manifold Mounting: Manifold pipe is located above cylinder bank, on fixed squares directly on the wall or on vertical supports. Assembly of manifold pipe is performed at the same time as bracket mounting. Avoid positioning manifold by initially connecting it to distribution system as such operation may modify elevation between manifold and discharge hose connections. See 2.1.1 bracket mounting for further information. All manifold threaded connections shall be sealed with Teflon tape.


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2.1.2.5 " Check valve (Data Sheet FT 55) Description: Device which prevents gas returning from manifold pipe to cylinders, thus ensuring a complete discharge of all bank cylinders. Acts as a safety element by plugging the gas outlet to those cylinders which being disconnected may cause a manifold accidental discharge during maintenance operations.

Figure 2.1.2.5 " Check Valve

Minimum cross sectional area: 314 mm2 Mounting: Once manifold is mounted onto brackets, mount all check valves. It is always located between discharge hose connected to cylinder and discharge manifold. To mount apply joint sealing compound or Teflon tape, to manifold pipe threaded connection where the check valve is fitted. Do not apply same to the two first rows of thread. Place check valve on manifold taking care that arrow points at manifold (upwards), never at cylinder. Tighten joint using a fixed wrench. Dimensions: External diameter: 52 mm Length: 84 mm Connection thread: G Working Pressure: 370 bar


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2.1.2.6 High pressure auxiliary cylinders

Figure 2.1.2.6 80 and 140 litre INERT GAS Cylinders.

Description: High pressure containers containing INERT GAS extinguishing agent charge. Cylinders of unwelded drawn steel in accordance with specifications of TPED 99/36/EEC. Heat treated. Hydraulic test pressure to both 200 and 300 bar. All models are approved according to European Regulations applicable ( mark ). Once valve is assembled onto cylinder collar (3) and protection flange(5), the equipment is protected by a safety cap for transportation (4). Cylinders are supplied packed. Each unit protected by octagonal cardboard. All cylinders are provided with identification labels indicating handling instructions. Mounting:

NOTE: DO NOT REMOVE PROTECTION CAPS FROM CYLINDERS UNTIL THEY ARE FIXED ONTO THEIR BRACKETS AND ONLY IMMEDIATELY PRIOR TO INSTALLATION OF DISCHARGE HOSE.

Assembly cylinder-valve is supplied fully mounted. Place all cylinder onto brackets. To prevent damages to cylinders by dropping them accidentally, locate front pieces of brackets prior to removing protection caps. Tighten front pieces allowing cylinder freedom of movement. Next, remove protection caps (4) Remove valve head cap. All cylinder valves shall be orientat d in the same direction (Manifold and valve LPG stamp should be facing front).

LPG Tcnicas en Extinci en de Incendios S.A. DOC: MU/IG/02/IN Rev: 0 Pag: 25/109

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Do not forget, when release system mounting described in 2.1.3 is finished, to fix cylinders onto their brackets, tightening firmly. When complete system installation is finished (including release) mount and tighten manually all LPG 128 discharge valves head caps.

2.1.2.6.1 Cylinder inscriptions. Under legal requirement, all cylinders shall have a number of inscriptions attached to their ogives indicating name of manufacturer, quality trade names, hydraulic pressure test, gas contained and other data. Arrangement of LPG cylinder marks are specified as follows as an example:

2

3

4

5

6

7

1

8 Description of inscriptions: 1: Manufacturers trade name 2: Outlet size 3: Cylinder dimensions (thickness, weight and capacity) 4: Notified body identification 5: European standard of reference. 6: Serial number 7: Working and test pressures 8: Date of manufacturing


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2.1.2.6.2 INERT GAS Identifying Label (Ex. Argon) In each delivery, LPG supplies one adhesive identifying label for each cylinder supplied. To prevent damages during transport and cylinder installation, labels are delivered together with documentation accompanying delivery. This label identifies gas contained in cylinder, quantity of gas contained, cylinder weight when empty, working pressure, cylinder identification number and date of charge. INERT GAS extinguishing agent experiences substantial pressure deviations depending on ambient temperature. To avoid problems related with reading pressures on pressure gauges, LPG supplies an adhesive label containing a diagram for Pressure-Temperature for INERT GAS gaseous agent depending on cylinder filling density.

Figure 2.1.2.6.2 ARGON identifying label.


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As a legal requirement, it is compulsory for each cylinder to have its identifying label. Therefore, it is very important for the person performing the installation to have each label attached to its cylinder as soon as the installation is finished. To perform this operation, manufacturing lot number shall be compared with the number marked on each cylinder ogive (field 3 described in item 2.1.2.6.1) with identifying marks on labels supplied. Labels shall be attached directly onto cylinder body, in a visible location and in a normal reading position. To adhere labels easier, first wipe away dirt, dust, oil or grease from cylinder area where the label is going to be placed.


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2.1.2.7 Discharge hose 4S-H (Data Sheet FT 110) Description: Discharge pipe for INERT GAS agent from cylinders to manifold pipe. Nominal diameter ". Made of synthetic rubber. Working pressure of 420 bar and burst pressure 1680 bar. Length 421 mm.

21

Figure 2.1.2.7 4S-H discharge hose.

Mounting: Connection (1) assembled swivel nut on LPG 128 valve outlet port (7) described in 2.1.2.1. The other end (2) connected to the non return valve. See example on drawings 520XXXAR in Appendix 1. Connection to check valve require Teflon tape, while connection to LPG 128 valve does not require and sealing element but it is recommended to add some Vaseline to union thread to facilitate fitting. First fix hose pertaining to check valve (2) taking care (1) that it faces valve outlet. Dimensions: Length: 421 mm Working Pressure: 420 bar Working Temperature: -40C to 120 C Bending radius: 280 mm


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2.1.2.8 Pressure switch with locking device (Data Sheet FT 047) Description: Pressure switch which closes or opens a circuit when a gas discharge is driven through the manifold pipe. The electric signal may be monitored on the panel board, or it may be used for stopping and /or starting up other electric devices. Once activated it can only be reassembled manually by pulling off the sphere incorporated in the locking system (1). Reassemble should be performed at storage location, on the pressure switch itself.

1

Figure 2.1.2.8. Pressure switch with locking device. Mounting: Mounted on manifold pipe (see figure 2.1.2.4 Discharge Manifold Pipe). Apply Teflon tape to threaded connection. Do not apply Teflon tape to the two first threads. Tighten union with a fixed wrench. Perform electric connection when installation mounting is finished in accordance with specifications in item 2.2 in this manual Electric Installation. Dimensions: High: 126 mm Wide: 30.3 mm Thermal gauge: 10 A Voltage gauge: 6 A 250 V 4 A 400 V Protection: IP 65 Working Temperature: 25C to 80 C Mechanical Life: 10 6 cycles Working pressure: 370 bar Minimum Working pressure: 10 bar


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2.1.2.9 Restrictor (Data Sheet FT 138) Description: Controls installation discharge flow. Restriction orifice is calibrated in accordance with specific hydraulic calculation for each installation.

Sealing O-ring Restrictor Plate

Restrictor NutCirclip

Figure 2.1.2.9 Restrictor

Mounting: Check flow arrow points to the right direction (discharge sense). Seal threaded connections with Teflon tape. Tighten using a rounded shape wrench:

It is possible to access to the restrictor plate by disassembling the restrictor nut and taking out the circlip with the appropriate pliers. Whichever change on the restrictor orifice diameter shall be recorded and stamped on the label supplied with the restrictor:


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Flow characteristics: K1 = -0.13096 K2 = 0.00753 K3 = -0.00000 Other: Orifice in the diaphragm should be at least 3 mm. Orifice in the diaphragm should be at maximum 80% of upstream internal pipe diameter. Working pressure: 370 bar


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2.1.3 Release System This is the system which allows command of discharge of gas contained in cylinders. LPG-INERT GAS standard release system is pneumatic operated. Pneumatic release may incorporate associated solenoid valves into manual release device which select pneumatic opening for a selector valve. Located at outlet of pilot cylinders. Components which may be included into an INERT GAS release system and mounting of each one are described as follows. Mounting is performed in the order elements are described.


TECHNICAL DATA

2.1.3.1 Pressure pilot cylinder and pilot valve (Data Sheet FT 052) Description: Pilot cylinder of 3 l (5) capacity, equipped with discharge valve (1), charged with dry nitrogen at 100 bar. Manual actuation (2), electric actuation by solenoid valve (4). Once pilot cylinder discharge is activated, nitrogen flows through release line up to pneumatic release cones mounted on bank auxiliary cylinders. Once activated it is not possible to interrupt cylinder discharge (total discharge).

Number Description 1 Discharge valve 2 Manual release 3 Solenoid valve 4 Cylinder 5 Cone 6 Pressure gauge

Figure 2.1.3.1 Pilot cylinder+valve


TECHNICAL DATA

NOTE: EACH SINGLE PILOT CYLINDER CAN OPERATE UP TO 40 INERT GAS CYLINDER (200 BAR AT 15C) Mounting: Fix pilot cylinder bracket to cylinder bank bracket in the position shown in installation drawings (see example included in Annex 1, drawings 520098AR,520094AR). Height of cylinder bracket shall be adequate for a possible manual operation. Unpack pilot cylinder. Fix same onto its bracket and remove protection cap. Tighten bracket leaving pressure gauge well visible and free access to the manual actuator (2). Unscrew pilot valve head cap to prevent accidental discharges during release system mounting. Mount the rest of release system. When completing all handling of release system, replace valve head cap.


TECHNICAL DATA

2.1.3.2 LPG 128-90 Valve (refer to Data FT 132) Dimensions: Valve gas inlet: ext W 28.8 DIN 477 int 3/8 Valve gas outlet: ext 21.7 mm int 12 mm Height: 155 mm Weight: 1.6 kg Solenoid connection thread: M 36 x 1.5 Pressure switch connection thread: M 10 x 1 Pressure gauge connection thread: M 10 x 1 Hand lever connection thread: M 30 x 1.5 Working Pressure: Max. Working Pressure: 166 bar Functional Pressure: 60 bar Containers: LPG 128 valve can be used in the following nitrogen containers:

Container Volume [l] Fill ratio [kg/l] 3 100 bar 15C


TECHNICAL DATA

2.1.3.3 Manual lever release (Data Sheet FT 051) Device which allows manual actuation of bank pilot cylinders. It comprises a lever (1) which manually operated backwards and downwards pushes a needle (2) against a release disk located on pilot valve body. Thus, release disk bursts and opens valve. Provided with seal (3) against accidental activations.

5

4

2

3

1

Figure 2.1.3.3.1 Manual lever release Dimensions: Valve connection thread: M 30 x 1.5 Height: 82 mm Length: 68 mm Operation specifications: Working force applied to lever: 35 N Mounting: Check that seals (3) are not damaged. Check that "0"ring (5) is in its location. Release is placed on pilot valves on connection port indicated in 2.1.3.1. Use a rounded shape wrench for mounting. Do not apply sealing compound to threaded union (4) as sealing is achieved by "0" ring (5).


TECHNICAL DATA

Manual actuation devices shall be installed at normal operating height, at highly visible locations. They shall be protected against being tripped accidentally. Each lever manual release device shall be clearly marked indicating the protected zone it serves.

NOTE: PRIOR TO INSTALLING THE MANUAL RELEASE ONTO THE VALVE CHECK THAT PISTON IS DEEP SEATED INSIDE ITS HOUSING, BY PUSHING DOWN WITH A SCREWDRIVER.


TECHNICAL DATA

2.1.3.4 Solenoid Valve (Data Sheet FT 017) Description: Electric device which allows opening of LPG family valves. Connected (1) to pilot cylinder valve. Allows actuation of pilot cylinders by means of an electric signal emitted by a panel board or by a release push button. Comprising a coil (3) mounted on a stem. When coil excites internal core is drawn up, thus producing opening of the valve. The coil is fed electrically by means of the connector (4). There are two models available, one for normal operations and one for explosion proof operations. This device may be disassembled even when the pilot cylinder is charged.

Figure 2.1.3.4. Solenoid Valve

Dimensions: Valve connection thread: M 36 x 1.5 Electrical specifications: Minimum voltage: 22 V DC Nominal voltage: 24 V DC Maximum voltage: 27 V DC Minimum intensity: 0.50 A Nominal intensity: 0.55 A Maximum intensity: 0.60 A Consumption power: Low Temperature 13 W High Temperature 10 W Protection: IP-65 Solenoid coil: DIN 43650/A (2P+E) Working Pressure: Maximum Working Pressure: 170 bar


TECHNICAL DATA

Operation specifications: Working: Normally closed Reaction time: 6 miliseg. Mounting: Solenoid valve is delivered mounted on pilot cylinder valve. Do not perform electrical connection until pneumatic mounting for all the installation is completed (see 2.2: Electrical connection). In case of having to disassemble for operation test, remove connector (4), loosen nut (2) and remove coil (3) NOTE: LPG DOES NOT RECOMEND YOU TO REMOVE SOLENOID VALVE FROM PILOT CYLINDER, IN CASE OF MALFUNCTION, SEND VALVE + CYLINDER + SOLENOID VALVE TO LPG. If for any reason or breakdown, it is essential to remove solenoid valve from pilot cylinder valve, firstly, disconnect valve pressure gauge. When you disconnect the pressure gauge, pressure supply to solenoid valve is shut-off. This operation should be performed under great precaution and operate carefully to prevent false operations. Therefore, the operator shall stand sideways to prevent a pressure gauge violent explosion. Discharge of nitrogen cylinder may be produced and cause discharge of cylinder bank. To prevent this, dismantle head cap of pilot cylinder valve. Next, dismantle connector (4), nut (2) remove coil (3) and last loosen fixing nut (1) with a rounded shape wrench.

Now it is possible to remove the rest of the solenoid valve. Mounting is performed by reversing disassembly procedure. Prior to mounting a solenoid valve check that there is no leakage by applying soapy water to all solenoid valve body, previously removing connector and coil. Check likewise for leakage on valve head (head orifice).


TECHNICAL DATA

2.1.3.5 Pneumatic release cones (Data Sheet FT 058)

2

5 3

6

41

2

Figure 2.1.3.5 Pneumatic release cones Dimensions: Pneumatic pressurized gas inlet: Pneumatic pressurized gas outlet: (where applicable) Valve connection thread: M 30 x 1.5 Working Pressure: Max. Working Pressure: 240 bar Functional Pressure: 100 bar Min. Working Pressure: 60 bar Description: The pneumatic cone (1) is provided with an internal piston (8) fitted with a protractor needle ( 2). When the piston is pneumatically activated on receiving the gas from the pilot cylinder, the needle bursts a disk housed on the valve body of the auxiliary cylinder. Thus discharging the pressurised extinguishing agent contained in the cylinder. This device is available provided with a coupling of 1, 2 or 3 working pneumatic tracks (3) + (6) or (7), depending on its location on the release line. On coupling (3) a fixing screw may be mounted (6) thus making a 2 track connection or a selector screw (7) which allows a third track for connection of release hoses coming from pilot cylinders or selector valves. On connection (4, 5) hoses are mounted on release line. Mounting: Piston-cone assembly is usually delivered mounted. Otherwise, insert the piston (8) into the cone body until it butts . Mount pneumatic coupling (3) and tighten the two track screw (6) or the three track one (7), according to drawings, without forgetting to insert the "0" rings (9, 10). NOTE: PRIOR TO MOUNTING THE CONE ON THE VALVE IT IS IMPORTANT TO CHECK THAT THE PISTON IS COMPLETELY RETRACTED INSIDE THE CONE, BY PUSHING DOWN WITH A SCREWDRIVER. PROTACTOR


TECHNICAL DATA

NEEDLE SHALL NEVER STICK OUT FROM CONE OR OTHERWISE A CYLINDER ACCIDENTAL DISCHARGE MAY BE PRODUCED.

Cone connection to bank cylinder valve is performed through release connection port (see figure in item 2.1.2.1 LPG 128-60 Valve), located on the opposite side to valve outlet. Use a rounded shape wrench for tightening. Do not apply sealing compounds to threaded union as sealing is by "0" ring. Repeat operation till all cylinders are fitted with a release cone.

Locate release cones on each cylinder in accordance with sketch for cylinder bank mounting and tighten. Next place screws (6 or 7) onto each cones in accordance with cylinder bank release drawing. Note: Burst disc, Burst disc fixer and Pneumatic Cone Needle SHALL be replace by new ones after each single actuation of the system.


TECHNICAL DATA

2.1.3.6 Decompression screw (Data Sheet FT 070) Description: Prior to a cylinder bank activation, the release circuit remains pressurized with nitrogen coming from pilot cylinder. To decompress the circuit in a safe and guided way, operate decompression screw (see 3.3.3 Release line decompression). There are two models available: C & L.

Screw model C

Screw model L

Figure 2.1.3.6 Decompression screw

Mounting: Model C is mounted directly on one of the pneumatic cone working tracks located onto the last cylinder on release line. Mount screw model L on any of the cones of intermediate cylinders, and connect it instead of the fixing screw. Thread element using a fixed wrench. Do not apply sealing compound to union as sealing is conical . Location determined in release system drawings. Dimensions: Connection threat: R Working pressure: 140 bar


TECHNICAL DATA

2.1.3.7 Decompression Valve (Data Sheet FT 075) Description: Decompression valves for pneumatic release systems prevent that excess pressure on release line produced by micro-leakage may accidentally activate release systems, leaving an external outlet which closes in case of real actuation of the pneumatic device.

Figure 2.1.3.7. Decompression valve

Mounting:

" Decompression valves shall be installed in accordance to drawings. They are generally mounted on an outlet "T" at nitrogen cylinder outlet valve and the first hose on release line (see examples in Annex 1: Drawings 520098AR, 520094AR). Union require to add PTFE tape to the thread taking care to dont cover the first 2 threads. Dimensions: Connection threat: R Working pressure: 240 bar Minimum Working pressure: 20 bar


TECHNICAL DATA

2.1.3.8 Release line Teflon flexible hoses (Data Sheet FT 040) Description: " Diameter Teflon hose fitted with brass ends used to direct release system gas from pilot cylinders to all auxiliary cylinders charged with Inert Gas. Flexible hoses are designed for a working pressure of 260 bar. Burst pressure 780 bar. Bending range 30 mm. Available in two lengths: 580 and 700 mm.

Figure 2.1.3.8 Teflon flexible hose. Mounting: Mount between release cone pneumatic couplings. Join chain of hoses together with pilot valve. Insert decompression screws or decompression valves according to drawing ( see examples in Annex 1, drawing 520098AR,520094AR). In the event of systems fitted with selector valves, follow connecting sketch pertaining to release drawings. Tighten threaded unions using a fixed wrench but do not apply sealing compound. Add Vaseline to unions to facilitate threaded union.

NOTE: AVOID TWISTING FLEXIBLE HOSES DURING MOUNTING OPERATIONS. THEREFORE, HOLD COUPLING CAP WITH A PAIR OF PLIERS WHILE JOINT IS TIGHTENED BY MEANS OF A FIXED WRENCH.


TECHNICAL DATA

Distribution System Assembly of pipe and fittings which drive gas discharge from cylinders to protected zone. 2.1.3.9 Pipe and fittings Pipes shall be installed in accordance with isometric drawing accompanying the project. Measures,

dimensions and pipe quality indicated in the drawing are to be comply with, as any modifications related to pipe dimensions or measures would impair system operation. In case of requiring any modification, the engineering department responsible for system design shall be notified as appropriate.

Pipe system shall comply with pressure requirements specified in table below. ASTM grade A-106 B unwelded steel pipes of the following classes (1) is recommended: Connection by means of welded accessories:

Prior restrictor After restrictor Pipe size Working

pressure Pipe class Pipe size Working

pressure Pipe class

1

Sch 40 or larger Welded connection

1

1

1

1

1

2

225 bar Sch 80 or larger Welded connection 2

65 bar

Sch 40 or larger Welded connection

1 According to ANSI B-36-10 Connecting fittings, whether threaded or welded, shall be 300 lb. prior to restrictor. On the rear of restrictor

accessories shall be 1000 lb. minimum. Pipes smaller or equal to 2" nominal diameter shall not be connected by welding on site. Connections on

site shall be threaded. Installation shall be earthed. Pipe painting shall be red (RAL. 3002). 2.1.3.10 Supports Every installation shall have a minimum of two supports to hold pipe system. Maximum distance between two supports along pipeline shall never exceed the following values:


TECHNICAL DATA

Nominal Diameter (mm)

Nominal diameter (inches)

Maximum distance between supports (m)

10 3/8 1.0 15 1.5 20 1.8 25 1 2.1 32 1 2.4 40 1 2.7 50 2 3.4 70 2 3.5 80 3 3.7

100 4 4.3

Whenever pipeline is more than 2 inches (DN 50) and table distances cannot be adhered to because of building designs, these distances may be raised to 6 m between supports, if pipeline is provided with double supports.

Pipeline supports shall be located next to pipe unions, to elbows and pipeline reverse changes. Supports shall connect pipe system directly to building structure and shall not be used to support other

objects. Parts of the building where supports are fixed shall be strong enough to take the load (see table for design charge). Otherwise, additional straps shall be fixed to other resistant elements. Only pipes with nominal diameters less than or equal to 50 mm may be attached to metallic structures in the shape of trusses or concrete slabs (design shall be approved by the authorities). Fastening plugs in concrete slabs shall be located at least 150 mm away from edge of slab.

Distance between nozzle and its support shall be the shortest possible:

- For pipelines with a smaller or equal diameter to 25 mm, maximum distance from support to nozzle shall be 0.1 m.

- For pipelines more than 25 mm diameter, maximum distance from support to nozzle shall be 0.25 m.

Supports type hangers or manifold "U" fixation are recommended. Pipe brackets and other fittings for

holding pipes, shall completely surround the pipe and close. Supports shall comply with the following minimum requirements for sectional areas and depth anchoring: Pipe nominal diameter Design charge

(N) Support minimum

section (mm)

Thread size(metric)

Minimum depth of anchoring for

fastening plugs in concrete (mm)

until DN 50 (2)

2000 30 8 30

between DN 50 (2) and DN 100 (4)

3500 50 10 40


5000 70 12 40


8500 125 16 50


TECHNICAL DATA

- Minimum cross-sectional area of supports shall not be less than 30 mm2. - Support material shall be at least 3 mm thick. If galvanised, 2.5 mm thickness will be enough. In the

event of hot galvanised flanges, minimum dimensions shall be 2.5 mm x 1.5 mm for models not approved and 12 mm x 1.5 for approved models.

The following types of support are enclosed as examples:

FIXED SUPPORT: HORIZONTAL WALL

LPG T Z SUPPORT: FALSE FLOOR cnicas en Extincin de Incendios S.A. DOC: MU/IG/02/IN Rev: 0 Pag: 48/109

TECHNICAL DATA


SUSPENDED CEILING SUPPORT SUSPENDED CEILING FIXED SUPPORT

FLOOR FIXED SUPPORT

FALSE FLOOR SUPPORT FIXED SUPPORT: FALSE FLOOR

TECHNICAL DATA

2.1.3.11 Nozzles (Data Sheet FT 135 / FT 136) Description: Nozzles which discharge extinguishing gas inside the protected enclosure. Comprising a discharge head containing a multiple number of orifices. A diaphragm fitted with one single calibrated orifice is to be mounted internally. To avoid orifice obstruction calibrated orifice shall be at least 3 mm diameter. Device designed to produce optimum gas distribution.

360 Nozzle 180 Nozzle

Figure 2.1.3.11 Nozzle Mounting: Apply thread sealing compound or Teflon tape to distribution pipeline thread. Connect nozzle and tighten using a fixed wrench. Flow characteristics: K1 = -0.18299 K2 = 0.03074 K3 = 0.00000 Other: Orifice in the diaphragm should be at least 3 mm. Orifice in the diaphragm should be at maximum 80% internal pipe diameter. Working pressure: 142 bar


TECHNICAL DATA

180 NOZZLE 360 NOZZLE FORBIDDEN NOTE: FIXING OF NOZZLES IS VERY IMPORTANT. IT IS ALSO IMPORTANT THAT NOZZLE ORIENTATION SHALL NEVER POINT AT FALSE CEILINGS OR MOVILE PARTS AS GAS DISCHARGE COULD RAISE CELING SLABS OR DRAG OBJECTS. DISCHARGE NOZZLES SHALL NEVER BE LOCATED DIRECTLY ON VALVE DISCHARGE ORIFICE. To prevent errors during installation, all nozzles shall incorporate legible and long lasting inscriptions indicating diaphragm calibrated diameter and identification of its location in the drawing with reference to project and system hydraulic calculations. Usually LPG performs a mechanic engraving (punched) of above mentioned inscriptions on nozzle bodies.


TECHNICAL DATA

2.2 Electrical Installation After performing installation pneumatic mounting and with pilot valve head caps dismantled, perform electrical connection of components requiring so. When these components are fed through a control station, it is recommended to read carefully the instructions for the station installation so as to prevent accidental tripping through which electrical devices may, in some cases, cause complete discharge of the whole cylinder bank. NOTE: LPG ELECTRICAL COMPONENTS DO NOT HAVE POLARITY. ALL ELECTRICAL CONNECTIONS SHALL BE PERFORMED IN SUCH A WAY THAT THE CABLES REACH RIGHT TO THE DEVICE TO PREVENT CABLE CONFUSION LATER FOR STARTING UP AND MAINTENANCE OPERATIONS. Pressure switch with locking device electrical connection: For a normally closed circuit connect to 21 and 22 terminals. For a normally open circuit connect to 13 and 14 terminals.


TECHNICAL DATA

Solenoid valve electrical connection: Assure that electrical power supply is disconnected during electrical connections and LPG 128 head cap is removed. Connect solenoid valve as shown below: After connection place LPG 128 head cap back again.

2.3 Installation final requirements - LPG Inert Gas Systems may be equipped with non-electrical disable devices. - All cylinders, including pilot cylinders, shall have an adhesive label attached indicating identification number

(coinciding with the one engraved on its ogive) gross weight , net weight and date of charge. Time delay cylinder does not incorporate an identification label.

2

31

+

- Paint of all components shall be in perfect condition. Repaint those areas where the paint has undergone damages. In case of any oxide, prepare surface, apply a coat of priming for metal and finish by applying a coat of finishing paint. Colours for INERT GAS fire extinguishing systems are: black body and yellow ogive for cylinders, and (RAL 3002) red for pipe system.

- Each cylinder bank shall be identified by means of a notice indicating:

- Hazard protected - Warnings - Instructions for use and manual operation

Notices shall be firmly affixed and visible onto fixed elements, resistant to climatic and environmental conditions which they may be exposed to (dust, dirt, humidity, etc.).


TECHNICAL DATA

3 Commissioning and maintenance An INERT GAS extinguishing system shall be inspected and tested by competent personnel during system commissioning after its installation phase. Furthermore, a system inspection and maintenance calendar should be followed. The object of a periodical inspection is to ensure that the system is in perfect operating condition at all times. It is also useful for identification of problems due to age, accidental and environmental damages, unauthorised handling, changes in the contents of protected volume, uses, openings communicating with rooms and in general all those factors which may affect negatively foreseen extinguishing system output.

3.1 System commissioning and reception Extinguishing system commissioning consists of an installation inspection to evaluate installed system compliance with projected system and the execution of a series of tests which ensure proper operation of the extinguishing system. This document only deals with commissioning operations and inspections for cylinder banks and extinguishing systems. For detection system commissioning operations consult your supplier or detector manufacturer. Only personnel properly trained in fire extinguishing techniques shall perform system reception inspection and commissioning.

IT IS NECESSARY TO KNOW PROPERLY CYLINDER BANK CONNECTION AND IN PARTICULAR RELEASE SYSTEM.

as in some occasions only one release system is used to command discharge of several cylinder banks which may even be located on different distant locations. We recommend to study carefully installation drawings showing connection diagrams and LPG standard cylinder bank releases; in the case of commissioning of a non-standard cylinder bank it is necessary to consider the drawing supplied together with bank components.

TESTS TO BE PERFORMED FOR SYSTEM COMMISSIONING SHALL FOLLOW THE STEPS DESCRIBED IN THIS MANUAL,

as a failure in execution could provoke a system accidental discharge. Extinguishing system tests for components which are not described in this manual shall not be performed. During the performance of tests all personnel not assigned to commissioning operations shall evacuate cylinder storage area and area or areas protected by the cylinder bank. Protection masks and gloves shall be worn for component handling subject to pressure. 3.1.1 Component revision After installation of an INERT GAS system you should proceed with a system reception inspection. This consists of a component revision where condition, proper connection and installation of components in accordance with project are inspected. All component checking to be carried out are included on the checking list in Appendix III: Checking List for Installation Reception.


TECHNICAL DATA

3.1.2 Commissioning operations and operation tests. For commissioning, it is recommended to perform all the tests described hereinafter. Some of these tests are also performed for maintenance operations (see calendar in item 3.2 Maintenance). Material supplied by LPG is subject to factory quality control, thus the following tests on installed system constitute a complement to ensure proper extinguishing system operation and to prevent possible damage resulting from mounting. 3.1.2.1 Blow out with nitrogen Blowing out a pipe system with nitrogen (or any other suitable gas) ensures that the inside of the pipe is cleaned and denounces pipe or nozzle obstructions. Nitrogen flow shall be continuous. To perform the blow out, follow steps below: Remove auxiliary cylinder valve head caps. Remove pressure switch with locking device. Connect to manifold free port a dry nitrogen cylinder, fitted with regulated outlet of 50 bar pressure in

accordance with enclosed sketch:

Relief valve

Pressure reducer

Remove all nozzles comprising the system to be blown out. To perform nozzle reconnection, it is very

important to have available isometric drawings or project document where location of each nozzle is specified, as internal bores are different.

Plug all free pipe ends/terminals, except one. Open nitrogen cylinder valve and keep blowing out for 15 seconds approximately. NOTE: PRESSURE ESCAPE BY FREE END IS DANGEROUS. CHECK THAT THERE ARE NO PERSONS INSIDE THE ROOM AND EVACUATE OR FIX ELEMENTS WHICH COULD BE HURLED BY THE EFFECT OF THE PRESSURE.

PERFORMANCE OF THIS TEST MAY PRODUCE CLOUDS OF DUST.

THROUGH FREE OUTLET LIQUID AND SOLID RESIDUES MAY BE HURLED. Repeat the operation freeing a different pipe end each time and plugging the rest of them until all pipe ends are

completed. Remove all plugs and replace nozzles INTO THEIR ORIGINAL POSITION. Disconnect nitrogen cylinder and reconnect pressure switch with locking device. Replace auxiliary cylinder valve head caps.


TECHNICAL DATA

3.1.2.2 Water tightness pneumatic test for open pipes. This test verifies water tightness for distribution system.

? When do you perform this test ? Always, except when:

htness ry which

Re Re On manifold, connect a nitrogen cylinder to pressure switch port (nitrogen or any other suitable gas) with

regulated outlet of 3 - 5 bar. Insert a "T" fitted with a sphere valve (relief) (" or " PN16 sphere valve).

Relief valve

Pressure reducer

Disconnect all nozzles comprising the system. To perform nozzle reconnection, it is very important to

have available isometric drawings for pipe system or project document where location of each nozzle is specified, as there are different models.

Plug all free pipe ends, except one. Connect to free end a 0-10 bar pressure gauge or a pressure recorder device. Pressure recording may be

continuous or performed only at beginning or end of test. Pressurise pipe slowly at 3 - 5 bar. Wait for 10 minutes and register initial pressure value. Shut off pressure

supply, keeping pressurisation for 10 minutes. After 10 minutes, register pressure again.

? Has the test been successful? Pressure registered at the end of the test shall be at least 80% of the

Depre Disco Disco ION. Tighte

LPG Tcnica pressure registered at the beginning of the test. Otherwise, look for system leakage: with pressurised pipe, check with soapy water pipe and accessory unions. If you do not find any leakage, depressurise and revise threaded unions. Repeat test .

ssurize system by means of the relief valve inserted into nitrogen the connection. nnect nitrogen supply and connect the new pressure switch with locking device. nnect pressure meter and unplug ends of free pipes. Place nozzles into their INITIAL POSITn auxiliary cylinder valve head caps. - Other pipe tests have been performed which ensure its water tig- Very simple distribution system, provided with only one accesso

may change flow direction between manifold and nozzle. Limitations: If pipe temperaturre undergoes variations above 10 C during the 10 minute test, results of such test will not be reliable.

move auxiliary cylinder valve head caps. move manifold pressure switch with locking device. s en Extincin de Incendios S.A. DOC: MU/IG/02/IN Rev: 0 Pag: 56/109

TECHNICAL DATA

3.1.2.3 Operating Test for pressure switch with locking device. This test shall be perform when the pressure switch is already connected (to manifold and to alarm station) and it is not going to be disconnected again. Perform this test again in case of pressure switch disconnection for maintenance operations or for any other reason. Remove electric system box cap. Remove box electric body without disconnecting wiring. With the help of a ball pen or a rod, push lower piston

until box upper terminals are short circuited by means of the contact rod. Verify that control station receives corresponding alarm signal.

Re-insert pressure switch body into its box, replace box cap and reassemble pressure switch.

? Reassembly of LPG pressure switch with locking device. To reassemble this device it is only necessary to pull off the sphere incorporated in the locking device system.


TECHNICAL DATA

3.1.2.4 Release circuit water tightness test Remove caps from bank auxiliary cylinders. Disconnect the flexible hose (or copper pipe) which feeds release cone for first cylinder: Disconnect discharge valve release cones. Holding the cone in your hand, remove the piston-punch/needle

assembly by pushing down with a screwdriver onto the narrower side of the cone.

Overturn the piston-needle assembly and reinsert it in the cone until it butts, punch pointing to the narrower side

of the cone. Reinstall cones on valves with piston overturned.

Apply a source of pressure of 8-10 bar onto free end of flexible hose line (

TECHNICAL DATA

NOTE: PRIOR TO MOUNTING CONE ON VALVE IT IS VERY IMPORTANT TO CHECK THAT THE PISTON IS COMPLETELY RETRACTED INSIDE THE CONE, BY PUSHING DOWN WITH A SCREWDRIVER. PROTACTOR NEDDLE SHALL NOT EXCEED THE NUT.

Reconnect the first bank cylinder to the line coming from the pilot bottle. Replace auxiliary cylinder valve caps.


TECHNICAL DATA

3.1.2.5 Operating test for pilot cylinder release solenoid valves. Consider thoroughly drawings or installation of electric circuit feeding pilot cylinder solenoid valves. INERT GAS

systems only incorporate solenoid valves in pilot cylinders as to feed selector valves. Solenoid valves are never mounted on INERT GAS auxiliary cylinder valves.

Remove pilot cylinder valve head caps.

Remove solenoid coil nut and pull coil out of its housing on its centre stem. Remove all solenoid valve coils

pertaining to one release system. It is very important to ensure that they are all out of their housing so as to avoid an accidental discharge during the test.

Operate an electric release from fire station so as to excite coil. Once coil is excited, insert a suitable easily magnetised element (such as a light screwdriver) through its centre

orifice. Proper operation is confirmed if a magnetic field is produced retaining the metallic object inserted into the coil orifice. Minimum actuating time is 3 minutes during which a gradual heating of the coil may be observed.


TECHNICAL DATA

Repeat operation with each of the solenoid valves in one release system. To prevent accidents, prior to replacing each coil onto its stem, (it is vital not to muddle each coil position)

using same metallic object check for remains of magnetism through the coil orifice which may activate the valve.

Slowly place coil onto centre stem. If there is any magnetism left, controlled leakage will take place through the top of pilot cylinder main valve. If so, remove coil quickly to interrupt leakage. Such leakage shows that solenoid valve is still being fed. Shut off that supply.

In the e

to elimicoil (puTechnic

Once co

LPG Tcnicas e

IMPORTANT: It is advisable that the length of the cable for solenoid valves shall be such that it will not be possible to mix up their position (the long cable for the solenoid valve which is further away and the shorter cable for the one that is nearer). vent of controlled leakage through the top of pilot cylinder main valve with the result that it will be difficult nate, to prevent slow discharge of cylinder, proceed to perform 2 or 3 rapid placements with the excited lses not to exceed 1 second ) on its stem to stop leakage. If leakage is uncontrolled, contact the al Service of LPG Tcnicas en Extinction de Incendios, S.A.

il is replaced onto its stem, replace the hexagonal nut which was removed in step 3.

n Extincin de Incendios S.A. DOC: MU/IG/02/IN Rev: 0 Pag: 61/109

TECHNICAL DATA

NOTE: For whatever reason you decide to SEPARATE A PILOT VALVE BODY FROM A SOLENOID VALVE STEM it is imperative to disconnect pilot cylinder main valve gauge first. This operation shuts off pressure supply to solenoid valve. CAUTION: CYLINDER IS CHARGED AT 100 BAR. See 2.1.3.1 for further information. In case of malfunction, LPG recommends not to dismantle stem but submit pilot cylinder + solenoid + valve assembly to the technical service.


TECHNICAL DATA

3.1.3 Inspection and test for protected enclosure integrity. - Check enclosure measurements and its adaptability to design project specified measurements. Verify that all

structural components are in compliance with drawings. - Enclosure gas tightness may be checked by following one of these methods:

- Door Fan Test: This test comprises determining an enclosure leakage area by means of a pressurization and forced depressurization test. Operations for pressure changes are performed by means of a fan installed at enclosure door. From results obtained we draw up period of time agent maintained in the enclosure, that is, time design concentration is maintained at hazard located at maximum height.

- Flooding Test: Comprises a real discharge subject to continuous registering the evolution of the

oxygen concentration in the room at three points of different heights. From results obtained we may draw up period of time agent maintained in the enclosure.

Standards NFPA 2001 and ISO 14520 specify Door Fan Test as an enclosure integrity test (unless Authorities Having Jurisdiction say otherwise). CEA and Cepreven specify flooding test for rate of maintained time, except when any other procedure may be used. LPG has available means and qualified personnel to perform any of these two tests.


TECHNICAL DATA

3.2 Maintenance INERT GAS fire extinguishing systems shall be subject to a preventive maintenance program ensuring proper operation in case of fire. This program and maintenance operations shall comply with regulations applicable in the country or region where the system is installed. Herein Spanish Law applicable is taken as a base for installation maintenance. As manufacturer, LPG advises all system owners and final users to demand, as a minimum, execution of maintenance operations described in this manual. Safety manager as well as personnel in charge of maintenance shall be properly trained in system operation, required safety conditions for the maintenance and INERT GAS effects on persons and property. They shall also know and have access to system connection drawings, design project, maintenance and inspection files, including reception inspection. If INERT GAS system is projected to include a release abort system (LPG Maintenance Box) prior to each operation set such system in "MAINTENANCE" position. This valve position directs pilot cylinder discharge towards a system external escape. thus preventing cylinder bank actuation. Outlet for escape track shall be installed in a reliable zone outside storage area. When you finish maintenance operations, do not forget to reset release abort valve to its stand-by position. Regulatory requirements for maintenance of INERT GAS installation. As INERT GAS systems are fire fighting elements, at domestic level (Spain), they are covered in the Regulatory application frame for Installations and Fire Fighting Apparatus (R.D. 1942/1993). Appendix III comprises extracts from the most important Regulation points on system maintenance. In brief, this rule specifies the following: 1st) The last person responsible for installation maintenance is the final user or owner of same. 2nd) In all cases, installation maintainer as well as user or owner, shall keep written proof of compliance of preventive maintenance program, indicating, as a minimum, operations performed, results of verifications and tests and replacement of defective elements carried out. Annotations shall be up to date and shall be at the disposal of pertaining official inspection services.

3rd) Quarterly maintenance operations established under Regulations may be performed directly by installation user or owner without requiring assistance of any external official maintainers. LPG has performed a maintenance program in compliance with all Regulatory specifications for Fire Fighting Installations and Apparatus, including other maintenance operations recommended by LPG as manufacturer. This program specifies the following terms and operations: Quarterly: a) Check general condition of the installation using the list in Appendix III: Checking list for routine inspection

for INERT GAS Fire Extinguishing Installations. b) Check that installation identification notices, use and warning signs as well as cylinder adhesive labels are in

their appropriate location. c) Safety apparel for system handling and maintenance in perfect condition.


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Annually: a) Nozzles: in dusty atmospheres check that discharge orifices are not obstructed. b) Releases: Perform operating test for solenoid valves. Test described in item 3.1.2.5 in this manual. c) Alarms: check electric alarm devices for audible and visual operations. Give instructions from control station.

Check pressure switch with locking device for operation according to the test described in 3.1.2.3. Every two years: a) In areas usually dirty and dusty distribution system shall be blown out with dry nitrogen, in accordance with

item 3.1.2.1. Every ten years: a) Proceed to re-stamping of bank cylinders (auxiliary cylinders and pilot cylinders), in accordance with

Regulations established by the Ministry of Industry and Energy for Pressure Apparatus, MIE AP-7 Complementary Technical Instruction.

b) Flexible hose and manifold hydraulic test for tightness. Flexible hoses and manifold are subjected to a hydraulic test, pressurized at a limit of 1.5 times component own working pressure.

Any repair or maintenance operation performed in addition to those mentioned above, shall be done with the approval of routine inspection in Appendix III.


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3.3 Manual use of devices Manual operations after an actuation The following operations shall always been performed manually after a discharge (see 3.5 Actuation after a cylinder bank discharge).

- Re-assembly of pressure switch with locking device - Decompression of release line

Manual operations in case of failure of automatic system: In the event of failure of automatic discharge system or malfunction of any of its components, LPG has made provision by designing components and systems in such a way as to allow manual actuation (see 3.4 Actuation in case of failure of fire extinguishing system automatic actuation). The following operations are included:

- Actuation of manual lever release 3.3.1 Re-assembly of pressure switch with locking device Unlatch the pressure switch by pulling off the lever (1).

1

Pressure switch is located on the storage area, mounted on discharge manifold pipe.


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3.3.2 Actuation of manual lever release and manual pneumatic release. Manual lever release is located on installation pilot cylinder valve.

1

3

To operate, pull hard to remove seal (3). Operate lever (1) by pulling hard backwards and downwards. Nitrogen cylinders are charged at a pressure of 100 bar. Thus, there is a certain lever retrocession. Perform same operations for use of manual pneumatic release described in section 2.1.3.3. 3.3.3 Release line decompression When a discharge takes place, release line remains pressurized with nitrogen all along its length, from pilot cylinder to the last release cone. INERT GAS systems have a decompression screw incorporated (generally located at pilot cylinder outlet or at last release cone) which allows controlled nitrogen evacuation. Operate decompression screw in accordance with the following procedure:


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1. Remove cap (7). 2. Using a flat screwdriver pull out internal cap (5). 3. Replace cap (5) on reverse position (hexagon on the outside). Tighten using a 6 mm Allen wrench. At that

moment internal pressure escape will be heard. 4. When all internal pressure has been vented, replace cap (5) as it was at the beginning (Grooved surface

facing exterior). 5. Place cap on its position (7) considering the "0" ring (6) is in its proper place.


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3.4 Actuation in the event of failure of fire extinguishing system automatic activation.

When extinguishing discharge is not released within delay time specified by Central Station (see Control Station technical instructions) plus pneumatic delay (30 s) from fire alarm or if you can see a fire or alarm system has failed to operate, WAIT UNTIL AREA IS EVACUATED to manually activate extinguishment. The following operations shall be performed quickly and in order: 1. The person in charge of manual operation shall wear a helmet and gobbles which he will find on storage

area, next to cylinder bank and close to warning signs containing instructions for manual discharge. 2. Check visually condition of cylinder bank (flexible hoses, gauges on pilot cylinders show correct pressure). 3. Operate pilot cylinder release (see 3.3.2 Actuation of manual lever release and manual pneumatic release).

This operation provokes opening of pilot cylinder valve and auxiliary cylinder valves.


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3.5 Actuation after cylinder bank discharge In the hazard: 1. Prior to opening the door or operate hazard ventilation where discharge has taken place, wait for the arrival

of the fire brigade. 2. Once the hazard is controlled clean the area . 3. Check visually condition of INERT GAS installation within the hazard (pipe general condition, nozzle

condition). It is recommended to follow pertaining items on "Checking list for routine inspections for INERT GAS fire extinguishing installation " (contained in Appendix III ).

Cylinder bank location: 4. Verify that all INERT GAS installation cylinders have been discharged ( check that all pressure gauges

indicate 0 bar). Otherwise, remove head caps manually. Notify LPG technical department. If it is not possible to remove head caps manually DO NOT FORCE THEM. Call LPG technical personnel.

5. Unlatch pressure switch (see 3.3.1 Reassemble pressure switch with locking device). 6. Cut electricity supply to pilot cylinder solenoid valve. 7. Decompress release line by means of the decompression screw. (see 3.3.3 Release line decompression). In

the event of cylinder banks with selector valves, for depressurization operation of solenoid valves + manual release which control the opening of selector valves, the latter should be open.

8. Check visually INERT GAS installation condition within the hazard (component general condition). It is recommended to follow corresponding items on "Checking list for routine inspections for INERT GAS installation ".

9. Dismantle cylinders from their brackets and send them to LPG to be recharged as well as all damaged components for repair or replacement..

10. After replacing cylinders and their components, revise all system release systems and reassemble (e.g. Replace manual release seals, release discs used, etc.).

11. A new installation reception and commissioning of fire extinguishing system should be performed.


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ANNEXES ANNEX I Drawings for INERT GAS standard systems ANNEX II Technical data for INERT GAS system components ANNEX III Clauses from Standards and Check List for Handover and Routine Inspection

for Fire Extinguishing Systems.


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ANNEX I

STANDARD DRAWINGS FOR INERT GAS SYSTEMS DRAWING NUMBER DESCRIPTION 520098AR 80 l. INERT GAS STANDARD TYPE BANK SYSTEM 520094AR 140 l. INERT GAS STANDARD TYPE BANK SYSTEM FT-046 PRESSURE GAUGE CONNECTION FT-145 PRESSURE SWITCH CONNECTION

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