Agip Iran GROUP
IRAN – SOUTH PARS GAS FIELD PHASES 4 & 5
DOC. N. 2017 30 000 R SP SP 22400
PLANT : ONSHORE FACILITIES DOC. N.
RP 2017 999 1900 002
ACTIVE FIRE FIGHTING
6 5 REV.
4 3 2 REV.
IAFD C.H.PARK IAFD(HAZOP,PTR incorporated) C.H.PARK DESCRIPTION
AFD IFD Re-Issue for EPC DESCRIPTION
Snamprogetti
H.M.CHANG H.M.CHANG APPR
22-11-2004 26-07-2003
BY
J.H.KIM J.H.KIM CHKD
CZ CZ C. Zini
RB RB R.Brusoni
GV GV
21-06-2002 24-05-2002 18-07-2001
BY
CHKD
Job. 309400
F.Comodi APPR
DATE
DATE
Doc. n° 999-ZA-E-03098
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
CONTENTS 1. SCOPE ....................................................................................................................................... 4 2. APPLICABLE CODES AND REFERENCE DOCUMENTS....................................................... 4 3. ACTIVE FIRE-FIGHTING PHILOSOPHY .................................................................................. 6 4. FIRE WATER DEMAND ............................................................................................................ 8 5. FIRE WATER STORAGE TANKS ............................................................................................. 9 6. FIRE WATER PUMPS ............................................................................................................. 10 7. FIRE WATER MAINS............................................................................................................... 11 8. FIXED WATER SYSTEMS....................................................................................................... 12 9. FIXED FIRE MONITORS ......................................................................................................... 15 10. FIRE HYDRANTS AND HOSE REELS ................................................................................... 16 11. ACTIVE FIRE-FIGHTING FOR HYDROCARBON LIQUID STORAGE .................................. 17 12. FOAM CONCENTRATE STORAGE ....................................................................................... 19 13. TOTAL FLOODING CO2 SYSTEMS ...................................................................................... 20 14. MOBILE AND PORTABLE EQUIPMENT ............................................................................... 21 15. TECHNICAL APPENDIXES .................................................................................................... 22 16. ATTACHMENTS ...................................................................................................................... 47
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
1.
Rev. 6
SCOPE
This Job Specification covers the fire protection design requirements for the gas treatment plant for the “South Pars Development Project (Phases 4 and 5)”, in IRAN. Design requirements for passive fire protection systems and fire & gas detection systems are defined in separate documents. 2.
APPLICABLE CODES AND REFERENCE DOCUMENTS
Fire-fighting engineering shall be generally based on the requirements of this specification. In addition reference can be made to the below indicated standards for development of detailed engineering of specific fire-fighting systems and equipment. 2.1
APPLICABLE CODES AND STANDARDS
NFPA 10 (1998 Ed) Portable Fire Extinguishers NFPA 11 (1998 Ed) Low Expansion Foam and Combined Agent Systems NFPA 11A (1999 Ed) Medium and High-Expansion Foam Systems NFPA 11C (1995 Ed) Mobile Foam Apparatus NFPA 12 (2000 Ed) Carbon Dioxide Extinguishing Systems NFPA 13 (1996 Ed) Sprinkler Systems NFPA 15 (1996 Ed) Water Spray Fixed Systems for Fire Protection NFPA 16 (1999 Ed) Foam-Water Sprinkler and Foam-Water Spray Systems NFPA 20 (1999 Ed) Installation of Centrifugal Fire Pumps NFPA 24 (1995 Ed) Private fire Service Mains and their Appurtenances.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
2.2
Rev. 6
REFERENCE DOCUMENTS
SPP-2017-130-T-101
ISBL Firewater storage tank
SPP-2017-130-T-102
OSBL Firewater storage tank
SPP-2017-130-P-101 A/B
ISBL Firewater jockey pumps –Lower section
SPP-2017-130-P-102 A/B/C ISBL Firewater main pumps –Lower section SPP-2017-130-P-103 A/B
ISBL Firewater jockey pumps – Upper section
SPP-2017-130-P-104 A/B/C ISBL Firewater main pumps – Upper section SPP-2017-130-P-105 A/B
OSBL Firewater jockey pumps
SPP-2017-130-P-106 A/B/C OSBL Firewater main pumps PID-2017-130-0030-0101
ISBL Fire water storage – Fire water pumping system – Lower section
PID-2017-130-0030-0102
ISBL Fire water pumping system – Upper section
PID-2017-130-0030-0103
OSBL Fire water storage & pumping system
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
3.
3.1
Rev. 6
ACTIVE FIRE-FIGHTING PHILOSOPHY
GENERAL PRINCIPLES
It shall be first understood that extinguishing a main jet fire is not credible. The single possible strategy in case of such a fire is to shut-off the source of fuel and to promptly evacuate all personnel. The fire-fighting philosophy shall be focused on the capability of :
Extinguishing small hydrocarbons fires at their early stage of development. This shall be achieved manually, through portable or wheeled fire extinguishers.
Extinguishing pool fires limited to the retention basins or the dikes below equipment or tanks. This shall be achieved manually, through mobile or fixed foam systems of low expansion.
Extinguishing automatically fires in the machinery enclosures through CO2 total flooding.
Extinguishing manually electrical fires by means of either portable and mobile extinguishers, or fixed CO2 extinguishing system depending on the enclosure characteristics.
Extinguishing cellulosic fires and limiting smoke development in buildings with high occupancy.
The use of water as a cooling agent shall be understood to be a mitigation measure only.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
3.2
SPECIFIC PLANT REQUIREMENTS
3.2.1
Plant arrangement
Rev. 6
The Plant layout looks for two separate areas : one including all process facilities ( ISBL ) , the other including the condensate storage facilities ( OSBL ). Because these two areas are some 3 Km apart from each other, two separate fire-fighting systems shall be provided, each one serving the dedicated area only. The ISBL area looks for a wide ground levels differences so that fire water shall be supplied by two independent pumping system : one serving the upper level section, the other serving the lower level section. The OSBL area is assumed to be like a flat area, so fire water will be supplied by a dedicated fire water supply system.
3.2.2
Water sources
The system shall provide for two independent sources of water for fire service. Primary Water Source Desalinated water shall be used as primary source and be permanently stored to allow for system uninterrupted operation for the required time. Desalinated water shall be supplied to ISBL and OSBL storage directly from Phase 4&5 Unit 126 desalination facilities at 350 m3/h rate approx. This capacity shall serve for tank filling and continuous make-up service. A dedicated pipeline shall be provided from ISBL Phase 4&5 Unit 126 desalination facilities area to supply the OSBL area. Alternative Water Source Sea water shall be used as an alternative source and be supplied at the design capacity as required by any of the fire water system. At ISBL area, Sea Water shall be directly supplied by Phase 4&5 Unit 125 sea water pumps. At OSBL area, Sea Water shall be supplied by any source as available through the entire South Pars Field ; investigation and selection for the the most practical sea water source shall be performed during detailed engineering stage as well as study for adequate modification and interconnecting as necessary. Page 7 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
4.
Rev. 6
FIRE WATER DEMAND
The quantity of water supplied to any Plant area/section shall be at least sufficient to provide fire fighting and exposure protection of the equipment within a Fire Area as described in the appendices . Separate water demand calculations shall be performed for the following Plant areas:
ISBL upper section area
ISBL lower section area
OSBL area
Fire in two separate Fire Area at the same time shall not be considered. The maximum fire water demand shall correspond to the most demanding Fire Area, plus extra capacity for monitors and hoses streams. Extra capacity shall be calculated in compliance with Technical Appendix, anyway considering the following minimum figures :
120 m3/h for one mobile monitor plus 60 m3/h for fire hoses in process areas.
300 m3/h for mobile water/foam monitors in storage areas.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
5.
Rev. 6
FIRE WATER STORAGE TANKS
Two fire water storage tanks shall be provided:
one serving the ISBL area fire water system , common to both upper and lower section
one serving the OSBL area fire water system.
Both the storage tanks shall be normally filled with desalinated water which is the primary fire water source. In case of an emergency or prolonged fire fighting operation, the tanks shall be replenished with sea water which is the alternative fire water source. Each of the tanks shall be sized to allow for not less than six hours operation at the rated design capacity of the reference area / section. At ISBL area the tank design capacity shall be calculated assuming the simultaneous operation of both fire pumps sets ( Upper section and Lower section ) at the same time. The plant shall not be repressurised after a fire, until the tank is refilled with desalinated water. The tank shall be provided with a level indicator and the maximum filling level shall be fitted with an overflow.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
6.
Rev. 6
FIRE WATER PUMPS
Three fire pumps sets shall be provided to deliver water to the ring mains as follows :
One set serving the ISBL Upper section area
One set serving the ISBL Lower section area
One set serving the OSBL area
Each pumping set shall consist of three horizontal fire water pumps (one electrically and two diesel driven; the electrically driven pump shall remain powered in case of total normal power failure) corresponding to 3x50% of the Design Water Demand. Each diesel engine shall include a fuel tank with a capacity of at least twelve hours running, manually refilled by the main storage. The fire water main shall be permanently pressurised by two electrically driven jockey pumps having a capacity of 30 m3/h minimum. The fire water network shall be pressurised at 7 barg at the highest point of the fire water network. One pump shall run continuously with the second acting as spare. The pumps shall be sized to provide the rated flow at a minimum pressure of 7 barg at the hydraulically most remote user. This requirement shall apply even if one supply branch of the fire water mains is blocked. Fire water pumps and drivers shall fully comply with NFPA 20 Codes and be provided with proper Listing /Approval. Any fire water pump shall be provided with :
a manually operated isolation valve between the pump and the tie-in point with the main ring
a minimum flow and a non-return valve on the discharge side of the pump
testing facilities, designed to enable testing of the pump at 150% of the rated pump capacity
surge protection, if necessary.
The spare jockey pump and the three fire water pumps shall start automatically. The spare jockey pump shall be started automatically in the case of shutdown of the first jockey pump. The three water pumps shall be controlled by a low pressure signal from the fire water distribution network. After a suitable delay, should for any reason the fire water ring main pressure be below its set point, indicating the demand is not being satisfied, the logic shall initiate in sequence the starting of fire pump n°1, pump n°2 and pump n°3. Fire water pumps shall also be started automatically in the operation of automatic deluge system via the activation of fusible plug (PSL)/ heat sensitive cable. Pumps shall also be manually started from the pump local control panel. The possibility of starting the fire water pumps from the control room shall be envisaged. The only means for the operator to shutdown the fire pumps shall be by pressing the local stop push button. Page 10 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
7.
Rev. 6
FIRE WATER MAINS
Three independent fire mains shall be provided to supply fire water to field equipment and systems:
One main serving the ISBL Upper section area
One main serving the ISBL Lower section area
One main serving the OSBL area
The mains shall be arranged in the form of a ring around fire zones so that each ring and any area within a fire zone can be supplied with water coming from two opposite directions. A single fire water line supplying fire fighting systems is acceptable for warehouses and low-risk, non-hydrocarbon process. Fire water ring main shall be underground and the required depth shall be at least 0.8m below the ground level. Piping should run along side roads at some distance from hydrocarbon piping and 2m away from the edge of the road or 1 m from the sidewalk if any. The firewater main shall be equipped with isolation gate valves so that any section of the grid can be taken out of service and the grid can still supply water through adjacent sections. Number of valves shall be based on number of pipes at a main junction less one. Easy access to these valves shall be provided. The valves shall be located in pits and position indicators shall be provided. The pipe sizes in the fire water mains network shall be calculated to give the design flowrate at the required pressure at the fire-fighting equipment even when one of the supply branches of the loop is blocked. The maximum allowable velocity in the fire water mains shall be 3 m/s during normal operation, and 4 m/s with one of the supply branches isolated when discharging the design capacity as required in any Fire Zone. The fire water system components (flanges, fittings, line pipe etc.) shall be capable of withstanding the maximum pressure with the fire water pumps in operation with no take off flow, plus the static head of the fully filled storage tank and the over pressure which could be developed due to surge (hammer effect) at pump start-up or when the take-off flow is stopped. Dynamic study to investigate the need for surge protection shall be performed during detailed engineering stage. Underground piping material shall be GRP type and shall be chosen according to : Piping Material Classes Specification RP 2017 999 1300 001. When glass reinforced piping is used underground, detail design of the GRP network, including its installation shall be carried by the pipe supplier. The fire water mains shall be provided with full bore valved flushing connections so that all sections and dead ends can be properly cleaned out. Page 11 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
8.
Rev. 6
FIXED WATER SYSTEMS a) Deluge Systems Fixed water deluge systems are installed to provide cooling or fire intensity control.
Deluge systems shall be installed for the protection of the following equipment :
All vessels, columns and exchangers holding a hydrocarbon liquid volume of more than 5 m3. Water rate shall be 10.2 lit/min/m² of developed surface. Columns should be deluged on whole vertical length ; however consideration shall be made during detailed design to limit water application to 12 m maximum height from any possible hydrocarbon accumulation level, this in compliance NFPA 15 recommendation.
Pumps handling products close to or above their auto-ignition temperature.
Pumps handling C4 and lighter products. The foundation/skid of the pumps including an outskirt of at least 1.5 m shall be covered by water spray. The water rate shall be 20.4 lit/min/m² of the floor area.
Compressors handling C4 and lighter products which are not installed in enclosures. The compressor floor area including an outskirt of at least 1.5 m around the foundation, shall be covered by water spray. The system shall cover the compressor casing, associated piping and valving, the gearbox, the lube-oil console and other auxiliary equipment. The water rate shall be 20.4 lit/min/m² of the floor area..
Slug catcher.
Deluge shall be limited to equipment extremities and 5 m beyond. Water rate shall be 10.2 lit/min/m².
The pig receiver, if hydrocarbon liquid inventory is more than 5 m3. The water flow rate shall be 10.2 lit/min/m².
As propane refrigerant storage supply is not a continuous service, deluge on transfer pumps is not required. Protection shall be by monitors.
Flow rates for the spray systems shall be based on the mentioned water rates, which are in compliance with NFPA 15 Codes and already include a wastage factor , over-spray flow up to 15% rate can be added on the presence only of extreme conditions affecting proper water application like very strong wind effect, etc..
The piping downstream the deluge valves is normally dry. Provisions shall be made to drain the piping after operation. Page 12 of 57
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
The Material for fire water deluge piping shall be Cu-Ni which is in accordance with Piping Material Classes Specification N° RP 2017 999 1300 001; alternatively galvanised CS can be considered, as a minimum for dry pipes downstream the deluge valve.
Deluge valves shall be either located at a minimum distance of 15m from the protected area or, if not possible, behind a fire wall. Each deluge system shall be fed from two separate headers. One connection will have an automatic deluge valve and the other will have a manual (easily accessible) shut off valve. Isolation of automatic deluge systems shall be possible by means of manual block valves, locked open in normal service. The deluge valve shall be a specific quick opening automatic valve energised by the fire water pressure. Remote manual opening of each automatic deluge valve shall be possible from the Central Control Room. Local manual release shall also be possible. Deluge valves shall also be open in case of ESD1F. The deluge valve shall preferably be of the “straight through” design to avoid possible obstruction while operating. The maximum diameter for deluge valve shall be 8” (200 mm) and the maximum pressure drop at nominal flow shall be less than 0.7 barg. Deluge valves shall be of a type approved by an international organisation for deluge system. Deluge system water demand shall not exceed the maximum allowed per NFPA 15. Valve reset must always be accomplished locally and manually. Means shall be provided to enable the testing of deluge valve without discharging firewater through the pipework and nozzles. Deluge valves and associated piping should be sized so that water velocity does not generally exceed 3 m/s in any part of the deluge branch. However, higher velocities up to 5-6 m/sec are allowed to meet pressure drop requirement between the deluge valve and the hydraulically most remote nozzle. Restriction orifice should be avoided in compliance with NFPA 15; if deemed necessary , the number shall be kept to minimum and should be located at maintainable locations, preferably downstream of, close to deluge valves. Other location will require Company's approval.
Spray nozzles shall be selected with due consideration of their upstream working pressure. Spray nozzles shall be of the medium velocity type. The normal working pressure in the piping upstream of the nozzles should be around 3.5 barg and shall never be less than Page 13 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
2.5 barg. Spray nozzles shall have a 5 mm minimum diameter to minimise plugging. Spray nozzles shall be made of stainless steel. A study shall be conducted during detailed design stage to investigate corrosion problems due coupling of SS nozzles to Cu-Ni piping.
Hydraulic calculations shall be performed for each deluge system according to NFPA 15 assuming Hazen & Williams formula C factor = 150 for both Cu-Ni or SS pipes.
b) Water curtains From a first assessment, water curtains are not requested. In case of insufficient distance between two units, water curtains could be installed to limit the effect of thermal radiation from a fire.
c) Sprinklers Sprinkler system could be installed in non-technical building where fires are expected to involve cellulosic material. However, smoke detection coupled with manual fire fighting means (hose reels, fire extinguishers etc..) shall be preferred.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
9.
Rev. 6
FIXED FIRE MONITORS
Monitors can be ground level or elevated, local or remote controlled. Monitors shall be provided around receiving, process and flare KO drums facilities. A minimum distance of 15m and a maximum of 30m from the protected equipment shall be provided. Special precautions shall be taken to ensure that monitors are adequately protected from possible road traffic accidents. Two monitors shall be installed for each protected item of equipment to allow at least the use of one in any fire scenario and wind configuration. Monitors coverage shall be assumed the ground projected 30 m radius regardless of any interference or shadow equipment. Each monitor shall have a capacity of 120 m3/h approximately at a working pressure of 7 barg immediately upstream of the monitor. Each monitor shall have sufficient movement in the horizontal and vertical planes in order to permit coverage of any point protected by that monitor. There shall be means for locking the monitor in position. The minimum movement capabilities shall be :
rotation angle : 360° stop to stop
elevation angles : 80° upwards, 45° downwards.
Each monitor should be capable of discharging under jet and spray conditions. The distance reached shall be 40 to 45 m horizontal at straight water stream or 30 m for the center of water spray pattern. Monitors shall be of such design that the hydraulic forces (including pressure surge when opening the monitor valve) are balanced. Each monitor shall have a block valve and, shall be provided with adequate drainage facilities due to corrosive action of fire water. Water/foam monitors shall be provided in the MEG regeneration unit, near the chemical storage tanks and for the spillage pit in the slug catcher area. A double-gun type (one for water and one for foam) should be provided. The range of reach of foam monitors shall be around 30 m. Monitors will be supplied with foam by direct foam concentrate suction from local drums as well as by external sources ( fire trucks ). For this purpose monitors foam gun will be provided with an inline inductor allowing for foam concentrate suction. No fixed foam facilities shall be provided.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
10. FIRE HYDRANTS AND HOSE REELS a) Hydrants Fire hydrants shall be 6” (150mm) type with a single hydrant valve. One 4” (100 mm) and two 2½ ” (65mm) outlets with chained caps are required, and shall be provided with adequate drainage facilities due to corrosive action of fire water. Hydrants will be made of carbon steel pipe internally lined. Hydrants shall be arranged to provide coverage of the target area from two different directions. Hydrant spacing shall not exceed 60 m for process facilities and 80 m for storage facilities. Hydrants shall be located along access ways and roadways, around process and storage facilities, at least 15 m away from the equipment to be protected. Possible damage by road traffic shall be minimised and, if necessary, hydrants should be protected by guard systems. b) Hose Reels Hose reels shall be provided in the following buildings : Administration buildings Control building Workshop/warehouse Firefighting station Hose reels are fitted onto the permanently pressurised part of the firewater network. Hose reels comprise the four following components : a globe valve size 1” a reel with axial water supply connected to the globe valve, a semi rigid hose 30 m long, 1” an adjustable jet with orifice 8 mm Part of the hose reel from the inlet globe valve to the jet orifice shall be provided with adequate drainage facilities due to corrosive action of fire water. The pressure requirements at the hydraulically most remote reel is 2.5 barg minimum and the pressure shall never exceed 12 barg. If necessary, a pressure control valve can be installed. At 2.5 barg water pressure, the flowrate requirement is 55 lit/min. The distance reached shall be between 15 and 20 m under this pressure condition. Hose reels shall be located so that any single spot where a fire may exist shall be reachable by at least two hose reels. Hose reels shall be located away from the potential sources of hazard, preferably close to accesses e.g. stair landings, doors, etc.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
11. ACTIVE FIRE-FIGHTING FOR HYDROCARBON LIQUID STORAGE
ACTIVE FIRE-FIGHTING FOR FLOATING ROOF TANKS
11.1
The Active Fire-Fighting for floating roof tanks consists of the sequenced use of the following means:
An automatic extinguishing system, (to be provided by tank vendor) which shall discharge foam into the rimseal of the floating roof tank on fire (application rate:12 lit/min/m2 of rimseal for a duration of 30 to 40 sec).
Foam generators and pourers, which shall discharge foam into the rimseal of the floating roof tank on fire (application rate: 7.5 lit/min/m2 of rimseal) ; system to be supplied with foam solution by fire trucks.
Water spray systems for cooling the shell of the tank on fire and adjacent tank(s) included in the Fire Area (application rate: 15 lit/min/m of the whole shell circumference).
Mobile water/foam monitor(s).
All the above systems, except the automatic extinguishing system on tank rim seal, require human local operation. For bund area, small surface bund area around loading / unloading line can be extinguished by mobile means. Fixed foam protection system for full surface bund fire are not envisaged since there is no credibility in extinguishing the fire due to very large area of bund. In case of large pool fire in bund, the tank in bund on fire could be lost and the adjacent tank(s) will be protected by the distance from the bund on fire and by the cooling system to be applied on their skirt. 11.2
ACTIVE FIRE-FIGHTING FOR FIXED ROOF TANK
The Active Fire-Fighting for fixed roof tank consists of the sequenced use of the following means depending on fire scenario: a. Tank on fire
A foam system discharging directly into the tank under the surface of hydrocarbon liquid application rate: 2.5 lit/min/m2) ; system to be supplied with foam solution by fire trucks
Water spray systems for cooling the shell of the tank on fire and adjacent tank(s) included in the Fire Area (application rate: 15 lit/min/m of the whole outer shell circumference).
Mobile water/foam monitor(s).
All the above systems require human local operation. For bund area, small surface bund area around loading / unloading area can be extinguished by
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
mobile means. Fixed protection system for full surface bund fire is not foreseen. All the above mentioned manually operated water systems shall be fed by the fire water network from two opposite sides, through manual shut-off valves. These shut-off valves shall be located either at a minimum distance of 30 m from the protected equipment, or if this is not possible, behind a fire wall. 11.3
ACTIVE FIRE FIGHTING FOR LPG STORAGE TANK
The active fire fighting shall be hydrants around the storage area. A fixed water spray system shall be required for vital appurtenances on the tank roof and pumping platform if the thermal radiation calculation leads to more than 8 kW/m2 for this equipment. For appurtenances located on the tank roof, fireproofing could be used as an alternate. The pressure relief valves discharging to air shall be provided with dry powder extinguishing system in accordance with NFPA 17.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
12. FOAM CONCENTRATE STORAGE
12.1
CONCENTRATE FOR HYDROCARBON LIQUID STORAGE PROTECTION
The foam concentrate storage capacity shall allow supply of foam for 20 min for the scenario “Tank on Fire”. Film Forming Fluoro Protein (FFFP) foam concentrate of low expansion type shall be used. The foam concentrate will be stored in 200 litres drums wich shall be brought by mobile means when necessary. Mobile facilities shall be provided with facilities for foam concentrate proportioning and supply to foam systems. 12.2
CONCENTRATE FOR FIXED WATER/FOAM MONITORS
Foam concentrate for fixed water/foam monitors shall be stored in 200 litres drums which shall be brought by mobile means when necessary. For fixed water/foam monitors located in the MEG regeneration unit and near chemical storage tanks, foam concentrate of alcohol resistant type shall be used. For fixed water/foam monitors located near the slug catcher unit spillage pit, foam concentrate of FFFP low expansion type shall be used.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
13. TOTAL FLOODING CO2 SYSTEMS Fixed C02 system with manual activation shall be provided to protect the false floors of instrument rooms and central control room. These systems shall not be used before HVAC system has been shutdown and damper closed in these rooms. Each system shall have bottles fixed in a rack on the outside wall of the ITR/Control Room. Bottles will be protected from direct sunlight by an overhead canopy. Bottles will be designed for the maximum in shade temperature either by having a suitable rating at full pressure or by derating the pressure in the bottles so that it meets the bottle design pressure at the design maximum air temperature.
Total flooding C02 systems linked to the fire detection system shall be installed for gas turbines, combustion engines, compressor enclosures and emergency generator room. These systems shall be provided by the machine supplier who shall also determine whether successive C02 releases are necessary or not (taking into account the cool-down response of machinery) and the time delay between releases. It shall be possible to manually initiate the CO2 discharge from machine local control panel. Discharge, fault and inhibition of total flooding CO2 systems shall initiate a common audible alarm and a visual alarm on the operator control desk in the Central Control Room. The protection system shall be provided by the machine supplier.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
14. MOBILE AND PORTABLE EQUIPMENT a) Hose boxes Hose boxes shall be installed adjacent to hydrants and shall contain fire fighting accessories (fire hoses, water branch pipe, foam branch pipe with foam pick-up tube assembly, containers of foam compound). As a general rule, one hose box shall be installed for every two hydrants. b) Portable and wheeled extinguishers
12 kg portable and 50 kg wheeled dry powder extinguishers suitable for types B and C fires, shall be provided throughout the plant in the areas to be protected in order to have for the portable extinguishers a maximum travel distance of 15m for process units and 30m for the other areas and for the wheeled extinguishers between 30m and 50m. For compressors handling flammable gas, at least one extinguisher shall be provided at each floor level. Extinguishers shall be equipped with protection from the radiant heat of the sun. In buildings where hydrocarbons could be present, 12 kg dry powder extinguishers shall be provided.
6 Kg water extinguishers for type A fire shall be provided in buildings such as offices, stores, etc.
6 Kg CO2 extinguishers shall be installed in areas or buildings where electrical fires are expected such as control room, switchgear room, instrument room. Extinguishers shall be placed at each exit of such rooms.
c) Trailer mounted water/foam cannons Trailer mounted water/foam cannons (also called ‘mobile water/foam monitors’) shall be provided. They shall be suitable for towing behind a fire fighting vehicle or a utility vehicle. d) Fire-fighting vehicles The following vehicles shall be provided on plant premises :
water/foam and dry powder multi-service vehicle
a general purpose support vehicle for fire brigade personnel
The characteristics of the water/foam and dry powder vehicle shall be :
water, tank capacity : 2 m3
foam tank capacity : 4 m3
foam solution system : 6000 lit/min - 10 bar
dry powder tank capacity : 1 000 kg
This vehicle shall be equipped with a water/foam monitor
The vehicles shall be located in the fire station.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
15. TECHNICAL APPENDIXES Scope of the Technical Appendixes is to provide additional information to the general requirements previously described.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.1
DEFINITIONS
15.1.1
Fire Area
Rev. 6
Fire Area is an hypothetical area used to for the purpose of sizing the fire water system, whose boundaries are assumed as spread limits of fire and heat radiation; by this way no fire/ heat spread from one Fire Area to another is considered . Fire Area in process areas shall be logically defined depending on location of equipment and buildings provided that the minimum distance between equipment/vessels in one Area and equipment/vessels in another Area shall be not less than 15 m. Fire Area extension in tankage area shall be defined including all tanks/equipment totally or partially included within “one diameter” distance from the shell of the tank on fire or “two diameters” downwind whichever requiring the largest water demand; being “one diameter” and “two diameters” distance referred to the diameter of the tank on fire.
15.1.2
Area Water Demand
The Area Water Demand is the fire water capacity required to achieve fire protection in any single Fire Area in compliance with procedure described in Appendix 15.2
15.1.3
Design Water Demand
The Design Water Demand is the largest Area Water Demand among all figures calculated through each Plant area.
15.1.4
Fire Water User Pressure
The Fire Water User Pressure is the minimum residual pressure to be available at any user when the reference Area Water Demand is discharged.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.1.5
Rev. 6
Fire Water Design Pressure
The Fire water Design pressure is the maximum pressure which can be found through the plant at any working condition. The fire water design pressure shall not exceed 16 barg in any case. 15.1.6
Reference Fire Scenario
The reference Fire Scenario is the summary of all fire protection actions which are expected to be performed to control a selected fire risk.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.2
FIRE WATER DEMAND CALCULATION
15.2.1
Area Water Demand calculation
Rev. 6
Area Water Demand shall be calculated per each one Fire Area; these areas are evaluated through the entire Plant area on the basis of criteria indicated in Appendix 15.1.1 Area Water Demand shall be calculated on the basis of a reference Fire Scenario representing the fire situation requiring the largest water demand in the Area under discussion. Reference Fire Scenarios shall be selected on the basis of Appendixes 15.3.1 through 15.3.11 depending on the actual fire risk in the subject Area.
15.2.2
Design Water Demand
Design Fire Water demand is to be assumed as the largest figure among all Area Water Demand as resulting from investigation investigated through all Fire Area. Such figure is to be used to design the fire water supply systems, including storage, pumping and distribution facilities. Separate Design Water Demand shall be calculated for any one Plant area as follow :
ISBL Upper section area
ISBL Lower section area
OSBL area
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.3
Rev. 6
REFERENCE FIRE SCENARIOS
Here below are listed the reference fire scenarios to be considered for Area Water Demand calculation. 15.3.1
Liquid hydrocarbons small pool fire
Such kind of fire, originated by small oil leaks, are expected to occur everywhere through the plant area; they will be manually extinguished at their early stage of development by means of portable or wheeled fire extinguishers. Water application is not generally required. 15.3.2
Liquid hydrocarbons large pool fires in process areas
Such kind of fire, originated by large oil release in process unit area; because the extinguishment of such fires is very difficult, the fire-fighting action will meet fire intensity control as well as exposure protection by spray water application via fixed facilities. Additionally foam can be manually applied as possible by mobile facilities. Water demand shall be calculated as follows:
Demand from the deluge systems protecting the equipment on fire
Demand for all the adjacent deluge systems and included in the same Fire Zone
Demand for additional streams ( water or foam service ) at not less than 180 m3/h capacity.
15.3.3
Liquid hydrocarbons large pool fires in diked areas
Such kind of fire, originated by large oil release is mainly expected to occur in the tankage area only partially involving the retention pond area; it is not considered a “Credible Fire “ the full surface bund fire. Fire will be controlled / extinguished by means of manual foam application by mobile facilities. Water demand shall calculated as follows:
Demand for master streams ( water / foam service ) -not less than 300 m3/h capacity.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.3.4
Rev. 6
Liquid hydrocarbons fires in floating roof storage tanks
Such kind of fire, is expected to involve the roof rim seal area only. Fire will be controlled / extinguished by automatic foam application by fixed facilities . Additionally spray water can be applied for exposures protection. Water demand shall be calculated as follows:
Demand for foam solution application to the rim seal of the tank on fire
Demand for exposure protection of the shell of the tank on fire
Demand for exposure protection of the shell of the tanks adjacent to the tank on fire ( totally or partially included within a distance equal to the diameter of the tank on fire measured shell to shell ). Coverage shall be limited to the exposed half shell only if applicable.
Demand for additional streams ( water or foam service ) - not less than 300 m3/h capacity.
15.3.5
Liquid hydrocarbons fires in cone roof storage tanks
Such kind of fire, is expected to involve the entire fuel surface inside the tank wall. Fire will be controlled / extinguished by automatic foam application by mobile facilities . Additionally spray water can be applied for exposures protection. Water demand shall be calculated as follows:
Demand for foam solution application to the full fuel surface of the tank on fire
Demand for exposure protection of the shell of the tank on fire
Demand for exposure protection of the shell of the tanks adjacent to the tank on fire ( totally or partially included within a distance equal to the diameter of the tank on fire measured shell to shell ). Coverage shall be limited to the exposed half shell only if applicable.
Demand for additional streams ( water or foam service ) - not less than 300 m3/h capacity.
15.3.6
Liquefied hydrocarbons jet fires in process units
Such kind of fire is expected to have reduced magnitude so involving few equipment through the process unit; it is not considered a “ Credible Fire “ a large jet fire. Extinguishment of such fire must not be achieved unless the fuel source is shut-off ; exposure protection will be achieved by spray water application via both automatic and manual facilities. Water demand shall be calculated as follows:
Demand for additional streams ( water service ) - not less than 180 m3/h capacity. Page 27 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.3.7
Rev. 6
Liquefied hydrocarbons jet fires at storage tanks
Such kind of fire is expected to occur at inlet/outlet appurtenances only on the tank roof and pumping platform ; it is not considered a “ Credible Fire “ a fire involving the entire tank content. Extinguishment of such fire must not be achieved unless the fuel source is shut-off ; exposure protection will be achieved by spray water application via automatic and manual facilities. Water demand shall be calculated as follows:
Demand for deluge system protecting the equipment on fire.
Demand for all the adjacent deluge systems and included in the 8 KW/m2 radiation range.
Demand for additional streams ( water or foam service ) - not less than 300 m3/h capacity.
15.3.8
Liquid / gas hydrocarbons fires in enclosures
Such kind of fire is expected to occur inside the enclosure of rotating machinery ( gas turbines, combustion engines, compressors enclosure, emergency generators). Extinguishment of such fire will be achieved by automatic total flooding of the subject enclosure via proper extinguishing gas. Water application is not generally required. 15.3.9
Electrical fires in unmanned enclosures
Such kind of fire is expected to occur in the cable basement only below floating floors; it is not considered unmanned an enclosure in which people can enter for manual fire fighting. Extinguishment of such fire will be achieved by manually operated total flooding of the subject enclosure via proper extinguishing gas. Water application is not generally required. 15.3.10 Electrical fires in manned enclosures Such kind of fire is expected to occur in enclosures holding larger quantity of electrical facilities ( Control Room, Electrical Substation etc. ); they will be manually extinguished at their early stage of development by means of portable or wheeled fire extinguishers. Water application is not generally required. 15.3.11 Class A and B fires in technical buildings Class A and B fires in technical buildings are expected to occur in high occupancy technical building. ( Offices, Warehouses, etc) ; they will be manually extinguished at their early stage of development by means of portable or wheeled fire extinguishers. Page 28 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
Water demand shall calculated as follows:
Demand for additional streams ( water / foam service ) -not less than 180 m3/h capacity.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.4
Rev. 6
FIRE WATER SYSTEM DESIGN
The Onshore facilities Phases 4 & 5 are located in two separate sites : One site housing all process facilities ( ISBL ) , the other housing the condensate storage facilities ( OSBL ). The two sites are separated and each is far from the other, so the design of fire water supply system shall require different approaches as follows.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.4.1
Rev. 6
ISBL Area
The plant layout looks for some 48 m level difference between the fire water pumping station and the highest plant area, this last being expected to require a very high water demand. Due to this reason it appears not acceptable to provide one only pumping system serving all the plant areas at the same time; because of the wide level range it would originate very high pressure at lower areas, this last being an unacceptable condition from both technical and safety point of view . Considering the above and the need for having the Fire Water pumping station located in a safe place ( far from major risks ), the selected approach is to provide two separate fire water systems, each one serving plant sections at a elevation level range hydraulically acceptable. Any system shall consist of three main fire pumps as well as two jockey pumps supplying a distribution network located all around the reference plant areas. Because of the differences in pressure design, any system shall operate as a stand alone system without interface to the other system. The two pumping sets shall take suction from a common storage tank provided with suitable facilities for independent handling and isolation of any set. The proposed arrangement looks for the following Units grouping : Plant upper section
:
units at elevation between 70 and 90 m
Plant lower section
:
units at elevation between 38 and 56 m
In general the Fire Water Supply System shall be designed on the following general principles :
One only fire occurrence at any time; being the fire source located everywhere through the reference plant area.
Simultaneous running of both Upper and Lower section fire pump sets at the same time for six hours minimum time.
Normal power failure in case of fire
Emergency power availability in case of fire
Full independence from Firefighting facilities external to the Phase 4 & 5 Plant
Based on final estimation the ISBL Design Fire Water Demand is set as follows : Plant upper section
:
1010 m3/h
Plant lower section
:
1237 m3/h Page 31 of 57
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
U 114/2 115/2 UU116 /1 U 107 /1
FIRE WATER NETWORK – UPPER SECTION
EL.70 68mm EL.
U 147 U 148
EL.82 82mm EL.
EL. 90 EL. 88mm
FIRE WATER NETWORK ARRANGEMENT
U 143
U 130 U 130
FIRE WATER NETWORK – LOWER SECTION
EL. 40mm EL. 38
U 100/1 U 100/2 U 143
EL. EL.56 56mm
U 114/2 116/1 U U 105/2 107/1 U
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
Fire Water Storage There shall be one only storage tank (130 - T - 101 ) common to both upper and lower sections. The tank shall be fitted with proper nozzles to allow independent operation of the two Fire Pumps sets. The Storage Tank is set at 15000 m3 minimum capacity, allowing for 6 hour operation at 1010 m3/h ( upper section ) plus 1237 m3/h ( lower section ) fire water demand.
15.4.1.1
Lower section fire water system
Fire Water Pumps set Fire Water shall be supplied to the network lower section by the following pump set: 130 P 101 A/B
Electric motor driven jockey pumps
130 P 102 A
Electric motor driven main fire pump – rated for 50% of design water demand
130 P 102 B/C
Diesel engine driven main fire pump– rated for 50% of design water demand
At present the system is set for the following :
Design Water demand : 1400 m3/h. Design water Demand shall not be less than 1000 m3/h.
Fire water pumps capacity : 700 m3/h ( rated capacity as per NFPA 20 definition )
Fire water pumps discharge pressure : 11.9 barg
Actual fire water pumps capacity and pressure shall be calculated during the detailed engineering stage
in compliance with requirements of paragraph 15.2 and taking into consideration the
following pressure needs :
Min. User pressure
not less than 7 barg at the hydraulically most remote user when discharging the required Area Demand. Such condition shall be checked assuming the fire water storage tank as empty.
Max. User Pressure
not more than 12 barg at the hydraulically nearest user when discharging the required Area Demand. Such condition shall be checked assuming the fire water storage tank is fulfilled.
Design pressure
not exceeding 16 barg, to be inline with standard execution of fire protection equipment
In addition , a study shall be conducted during detailed engineering stage to investigate for :
Reducing the Min. & Max. User pressures for a better operating range
The needs for a pressure control system to limit operating conditions to the required values.
Fire Water Distribution Network Page 33 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
The Fire water Distribution network shall be designed on the basis of following general principles :
Twin supply header – from pumps to the network – each rated for 100% Design water demand capacity.
Fire Water Network single impairment option -
no flow through any one of the network
branches at a time.
Fire Pumps single impairment option - one of the pumps out of service
GRP Piping for both headers and distribution rings
A detailed Hydraulic Study Report shall be developed to demonstrate that the entire fire water system met the required design data for three cases at least : The Design Case ( pressure drop calculation at Design Water Demand delivery condition ) The Minimum Case ( pressure drop calculation at Minimum Water Demand delivery condition ) The Worst case ( pressure drop calculation at largest water demand among all hydraulically most remote from pumps ) Each case shall include calculation for both full network and single impairment network options; Calculations shall be performed fully in compliance with NFPA 15 procedures assuming Hazen & Williams formula C Factor = 135 for GRP piping. Computer modelling shall include all facilities of the Fire water System (storage tank, pumps, network, users ) and shall extent up to the following types of users: Fire monitors Deluge systems Foam systems Other streams shall be assumed to be delivered from nodes located around the subject Fire Zone.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.4.1.2
Rev. 6
Upper section fire water system
Fire Water shall be supplied to the network lower section by the following pump set: 130 P 103 A/B
Electric motor driven jockey pumps
130 P 104 A
Electric motor driven main fire pump – rated for 50% of design water demand
130 P 104 B/C
Diesel engine driven main fire pump– rated for 50% of design water demand
At present the system is set for the following :
Design Water demand : 1100 m3/h. Design water Demand shall not be less than 1000 m3/h.
Fire water pumps capacity : 550 m3/h ( rated capacity as per NFPA definition )
Fire water pumps discharge pressure : 14.9 barg
Actual fire water pumps capacity and pressure shall be calculated during the detailed engineering stage in compliance with requirements of paragraph 15.2 and taking into consideration the following pressure needs :
Min. User pressure
not less than 7 barg at the hydraulically most remote user when discharging the required Area Demand. Such condition shall be checked assuming the fire water storage tank as empty.
Max. User Pressure
not more than 12 barg at the hydraulically nearest user when discharging the required Area Demand. Such condition shall be checked assuming the fire water storage tank as fulfilled.
Design pressure
not exceeding 16 barg, to be inline with standard execution of fire protection equipment
In addition , a study shall be conducted during detailed engineering stage to investigate for :
Reducing the Min. & Max. User pressures for a better operating range
The needs for a pressure control system to limit operating conditions to the required values.
Fire Water Distribution Network The Fire water Distribution network shall be designed on the basis of following general principles :
Twin supply header – from pumps to the network – each rated for 100% Design water demand capacity.
Fire Water Network single impairment option - no flow through any one of the network branches at a time. Page 35 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Fire Pumps single impairment option - one of the pumps out of service
GRP Piping for both headers and distribution rings
Rev. 6
A detailed Hydraulic Study Report shall be developed to demonstrate that the entire fire water system met the required design data for three cases at least : The Design Case ( pressure drop calculation at Design Water Demand delivery condition ) The Minimum Case ( pressure drop calculation at Minimum Water Demand delivery condition ) The Worst case ( pressure drop calculation at largest water demand among all hydraulically most remote from pumps ) Each case shall include calculation for both full network and single impairment network options; Calculations shall be performed fully in compliance with NFPA 15 procedures assuming Hazen & Williams formula C Factor = 135 for GRP piping. Computer modelling shall include all facilities of the Fire water System ( storage tank, pumps, network, users ) and shall extent up to the following types of users: Fire monitors Deluge systems Foam systems Other streams shall be assumed to be delivered from nodes located around the subject Fire Zone.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.4.2
Rev. 6
OSBL Area
The area, including the condensate storage facilities, is some 3 Km far from the ISBL area and it is assumed to be a flat area without any level difference between the fire water pumps and the hydraulically most remote user. Because of the distance from the ISBL facilities a dedicated fire water supply system is to be provided serving the OSBL area only. The system will consist of a fire water storage from which take suction a main fire pumps set as well as jockey pumps set to supply a distribution network. In general the Fire Water Supply System shall be designed on the following general principles :
One only fire occurrence at any time; being the fire source located everywhere through the entire OSBL plant area.
Normal power failure in case of fire
Emergency power availability in case of fire
Full independence from Fire-fighting facilities other than those provided for Phases 4 & 5 Plant
15.4.2.1
Fire water storage
There shall be one only storage tank (130 - T - 102 ) for the OSBL fire water system. The tank will be supplied with desalinated water by a dedicated line from ISBL facilities and be fitted with proper nozzles to allow pumps operation . The Storage Tank is set at 6000 m3 minimum capacity, allowing for 6 hour operation at 1000 m3/h design water demand. Because this is a tentative figure only, it is the scope of EPC Contractor to calculate the actual storage capacity depending on design water demand which shall be calculated in compliance with requirements of paragraph 15.2.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.4.2.2
Rev. 6
Fire water pumps set
Fire Water shall be supplied to the network lower section by the following pump set: 130 P 105 A/B
Electric motor driven jockey pumps
130 P 106 A
Electric motor driven main fire pump – rated for 50% of design water demand
130 P 106 B/C
Diesel engine driven main fire pump– rated for 50% of design water demand
At present the system is set for the following :
Design Water demand : 1000 m3/h.
Fire water pumps capacity : 500 m3/h ( rated capacity as defined by NFPA 20 )
Fire water pumps discharge pressure : 11.0 barg
Actual fire water pumps capacity and pressure shall be calculated during the detailed engineering stage
in compliance with requirements of paragraph 15.2 and taking into consideration the
following pressure needs :
Min. User pressure
not less than 7 barg at the hydraulically most remote user when discharging the required Zone Demand. Such condition shall be checked assuming the fire water storage tank as empty.
Max. User Pressure
not more than 12 barg at the hydraulically nearest user when discharging the required Zone Demand. Such condition shall be checked assuming the fire water storage tank as fulfilled.
Design pressure
not exceeding 16 barg, to be inline with standard execution of fire protection equipment
Based on the above, a study shall be conducted during detailed engineering stage to investigate for :
Reducing the Min. & Max. User pressures for a better operating range
The needs for a pressure control system to limit operating conditions to the required values.
15.4.2.3
Fire water distribution network
The Fire water Distribution network shall be designed on the basis of following general principles :
Twin supply header – from pumps to the network – each rated for 100% Design water demand capacity.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Fire Water Network single impairment option -
Rev. 6
no flow through any one of the network
branches at a time.
Fire Pumps single impairment option - one of the pumps out of service
GRP Piping for both headers and distribution rings
A detailed Hydraulic Study Report shall be developed to demonstrate that the entire fire water system met the required design data for three cases at least : The Design Case ( pressure drop calculation at Design Water Demand delivery condition ) The Minimum Case ( pressure drop calculation at Minimum Water Demand delivery condition ) The Worst case ( pressure drop calculation at largest water demand among all hydraulically most remote from pumps ) Each case shall include calculation for both full network and single impairment network options; Calculations shall be performed fully in compliance with NFPA 15 procedures assuming Hazen & Williams formula C Factor = 135 for GRP piping. Computer modelling shall include all facilities of the Fire water System ( storage tank, pumps, network, users ) and shall extent up to the following types of users: Fire monitors Deluge systems Foam systems Other streams shall be assumed delivered from nodes located around the subject Fire Zone.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.5
Rev. 6
DESIGN OF DELUGE WATER SPRAY SYSTEM
The following are included within the scope of “Deluge Water Spray” :
Manual systems for water application to the shell of oil storage tanks
Auto/manual system for water application to vital appurtenances on LPG storage tanks
Auto/manual systems for water application to process equipment
15.5.1
Water Spray System for Oil storage tanks
The Fire Water System shall be designed on the following general criteria :
Any system can be divided in two sections, whenever applicable, in order to minimise water demand for exposure protection.
Any system/section shall be fed by a riser/ header line supply line connected to one only branch of the fire water network.
Any system/section shall be operated manually only by means of a dedicated block valve located outside the bound at not less than 30 m far from tank shell.
Minimum water rate application as indicated in section 11.
Spray nozzles shall be flat jet type, Listed or Approved by recognized international Institute; they shall be arranged in a single row, equally spaced, on top of the tank shell; spacing shall allow for discharge jet pattern overlapping.
15.5.2
Water spray systems for LPG storage tanks
The Fire Water System shall be designed on the following general criteria :
Any system can be divided in sections, whenever allowed by radiation range , in order to minimise water demand for exposure protection.
Vital appurtenances shall include at least : inlet/outlet nozzles, safety valves, product piping, steel structures and parts of the roof involved in the heat radiation range.
Any system/section shall be fed by a riser/ header line supply line connected to one only branch of the fire water network.
Any system/section shall be operated manually only by means of a dedicated block valve located outside the bound at not less than 30 m far from tank shell.
Minimum water rate application as indicated in section 11.
Spray nozzles shall be full cone Protectospray D3 type or equivalent , Listed or Approved by recognized international Institute; they shall be arranged in over the protected equipment to guarantee complete coverage of exposures. Page 40 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.5.3
Rev. 6
Water spray systems for process equipment
The Water Spray Deluge System shall be designed on the following general criteria :
Equipment covered by water spray shall be logically grouped depending on their location through the plant; equipment grouping shall also take care of the heat radiation range and be arranged to minimise fire water demand.
Equipment to be covered by water spray shall include all typical as indicated in chapter 8.
As indicated in section 8 any system shall be fed by two separate/opposite branches of the fire water network; one supply line shall be controlled by a Deluge Valve Set located not less than 15 m far from the protected equipment , the other line shall be controlled by a manually operated block valve located not less than 25 m far from the nearest protected equipment.
Any Deluge Valve Set shall include at least : an isolation block valve, a deluge valve, line strainer , vital air pot, test and drain valves, water powered alarm motor gong.
Depending on number and location deluge valves can be grouped on common manifolds supplying up to 4 sets maximum; in such a case one only line strainer , vital air pot and motor gong shall be provided per any manifold.
Minimum water rate application as indicated in chapter 8
Spray nozzles shall be full cone Protectospray D3 type or equivalent , Listed or Approved by recognized international Institute; they shall be arranged in over the protected equipment to guarantee complete coverage of exposures.
Any deluge valve shall be operated as follows :
Manually locally at the Deluge valve itself by means of a manual release device
Manually remotely at safe location 15 m far from the same valve, by means of hydraulic release device
Manually remotely from Control Room by means of electrical facilities ( air release solenoid valve at the deluge valve set )
Automatically by pneumatic air release from fire detection system
Deluge valves can be closed manually only at site.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.5.4
Rev. 6
Hydraulic Study
All the above deluge water spray systems shall be provided with Hydraulic Calculation Report to demonstrate that piping size and distribution met the below indicated design data :
Residual pressure at hydraulically most remote nozzle ( barg )
:
2.5 min. / 3.5 max.
Water velocity in deluge valve downstream piping
:
6 max
(l/min/m )
:
as per section 8
(m/sec)
Minimum application density
Overcapacity for balancing
( %
)
:
10 – 15
System maximum capacity
(m3/h )
:
454
System supply pressure (reference to design)
(barg )
:
8
Spray nozzle minimum orifice diameter
(mm)
:
5
2
Calculations shall be performed fully in compliance with NFPA 15 procedures assuming the following Hazen & Williams formula C Factor - GRP piping
135
- Cu-Ni piping
150
- SS piping
150
- CS piping – galvanised
120
Computer modelling of any system shall extent from the hydraulically most remote nozze up to the tie-in connection at the network.
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
FIRE TRUCKS
15.6
Fire-fighting vehicles shall be designed for industrial purposes and shall be in accordance with local authority regulations.
15.6.1
Multi-service Fire Truck (Water/Foam/Dry Chemical)
Chassis The Truck chassis shall be Mercedes model ; standard commercial type, commonly available and serviceable in the country of destination. The Fire Truck shall be open construction type to assist visual inspection, maintenance and repair; all fire-fighting equipment and facilities shall be properly located for easy access and operation. The angle of approach and departure shall meet NFPA 1901 requirements and be 15° or more. The chassis shall also include the following facilities :
an adequate cooling system of sufficient capacity to prevent overheating during stationary use in tropical areas in conjunction with prolonged fire-fighting under full operational conditions of both water and foam pumps.
A Power Take-Off transmission for the water booster pump, which shall be electrically or pneumatically engaged from both the cabin and the rear Operating Panel. The PTO engagement shall be on stopped truck only.
An Exhaust pipe with approved spark arrestor
An automatic over-speed protection to shut down the engine in the event of intake of flammable gases.
A driver cab having seats for three persons and shall be equipped with air conditioning and mobile radio.
Lighting and siren facilities including at least: one long range search light, twin reversing lights at the rear, floodlights, revolving beacons, fog lamps and a two tone siren.
An upper platform for operation of the monitors
Water / Foam System The water / foam system shall allow for the following operation :
Water/foam discharge with direct supply from hydrants ( by-passing the water pump )
Water/foam discharge with supply from the water pumps ( direct suction from pit or from hydrants) Page 43 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
Foam Concentrate proportioning and injection in each individual discharge connection.
Foam concentrate delivery under pressure
Water / foam delivery by one manually operate monitor
Water / foam delivery by two hose reels ( one at each side )
Water / foam delivery by 8 valved hose connections ( four at each side )
Water / Foam system main characteristics shall be as follow :
The water pump shall be of the centrifugal type, rated for 6000 lit/min capacity at 10 bar g minimum discharge pressure; the pump shall be driven by PTO and shall be able to take direct suction from pits
The Foam concentrate pumps shall be a positive displacement type, driven by other power source than PTO; the pump shall be rated to provide adequate supply for 6000 lit discharge capacity at variable concentration up to 6%.
The foam concentrate tank shall be non metallic type and shall have 4000 lit capacity
The water tank shall be non metallic type and shall have 2000 lit capacity
All piping shall be AISI 316 minimum and be designed for 16 bar g pressure (as minimum )
The water / foam monitor shall be a twin gun type, arranged on top of the truck, manually operable at the monitor itself. The monitor shall be rated for 2000 lit/min at 10 barg supply pressure and be fitted with adjustable foam baffle
The side hose reel shall have 25 m of 1” rubber hose and be fitted with interchangeable nozzles for water or foam service.
Dry Chemical System The Dry Chemical Extinguishing system shall allow for the following :
Dry powder discharge by two hose reel ( one per side )
Dry powder discharge by manually operated monitor
The Dry Chemical system characteristics shall be as follow :
The storage vessel shall be designed for 16 barg design pressure ( minimum )
Nitrogen bottle number and capacity shall be sufficient to empty the storage tank and to flush all piping and to guarantee that, during operation the pressure shall not be less than 14 barg. The cylinders contents shall have a reserve of 30% to deal with possible small leakages. Page 44 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
The hose reels shall be fitted with 30 m 1” rubber hose and trigger nozzle capable to discharge 2.5 Kg/sec dry chemical powder allowing for 15 m minimum jet throw.
Dry powder monitor shall be manually operated type, arranged on top of the truck. The monitor shall be rated for 20 Kg/sec minimum discharge capacity with a throw between 30 and 50 m.
Ancillary equipment The fire truck shall be equipped with the ancillary equipment below listed; equipment shall be stored in suitable enclosures of same truck.
4 water suction hoses ( 4 or 5 inch size )
1 suction strainer
4 suction pressure hoses 2.1/2” size
30 fire hoses 2.1/2” size x 25 m
4 water pistol grip rated for 400 lit/min
4 air foam making branch-pipe rated for 400 lit/min
2 collecting breechings 2.1/2” size
4 dividing breechings
6 fire extinguishers – dry chemical type 12 Kg charge – internal cartridge operated
2 fire extinguishers – CO2 – 6 Kg charge
2 hand portable water / foam monitors
Extinguishing agent The truck shall include the first charge of extinguishing agent as below indicated :
4000 lit foam concentrate – synthetic type – suitable for low & medium expansion – rated for 3% proportioning
1000 Kg dry chemical powder – potassium bicarbonate based – compatible for use with foam
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IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
15.6.2
Rev. 6
Support Fire Truck (General Purpose Fire Truck)
Chassis The Truck chassis shall be Mercedes model ; standard commercial type, commonly available and serviceable in the country of destination. The Fire Truck shall be closed construction type to house fire protection equipment. The angle of approach and departure shall meet NFPA 1901 requirements and be 15° or more. The chassis shall also include the following facilities :
an adequate cooling system of sufficient capacity to prevent overheating during stationary use in tropical areas..
An Exhaust pipe with approved spark arrestor
An automatic over-speed protection to shut down the engine in the event of intake of flammable gases.
A extended driver cab having front seats for three persons and rear sites for 4 persons at least; the cab shall be equipped with air conditioning and mobile radio.
Lighting and siren facilities including at least: one long range search light, twin reversing lights at the rear, floodlights, revolving beacons, fog lamps and a two tone siren.
Ancillary equipment The fire truck shall be equipped with the ancillary equipment below listed; equipment shall be stored in suitable enclosures of same truck.
30 fire hoses 2.1/2” size x 25 m
4 water pistol grip rated for 400 lit/min
4 air foam making branch pipe rated for 400 lit/min
2 collecting breechings 2.1/2” size
4 dividing breechings
10 fire extinguishers – dry chemical type 12 Kg charge – internal cartridge operated
10 fire extinguishers – CO2 – 6 Kg charge
4 hand portable water / foam monitors
4 Self Contained Breathing apparatuses ( 30 minutes operation )
10 helmets with face shield
2 fireman suit
Set of fire-mans tools
10 foam concentrate cans 25 lit each Page 46 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
16. ATTACHMENTS
16.1 FIRE WATER DEMAND SUMMARY
16.2 FIRE WATER SYSTEM SUMMARY
16.3 SPRAY DELUGE SUMMARY
16.4 FIRE PROTECTION EQUIPMENT SUMMARY
Page 47 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
16.1 FIRE WATER DEMAND CALCULATION SUMMARY 16.1.1
SUMMARY FOR ISBL – (LOWER SECTION) Fire Zone Label Description 01 02 07 08 09 15 18 19 20 21 22 23
Zone Water Demand m3/h
UNIT 100-1 UNIT 100-2 UNIT 102-1 / 2 / 3 / 4 / 5 / 6 UNIT 100-1 / 103-1 UNIT 100-2 / 103-2 UNIT 110 UNIT 113-1 / 114-1 / 115-1 UNIT 113-2 / 114-2 / 115-2 UNIT 120 / 121 / 123 / 124 / 130 / 131 UNIT 140 / 142 UNIT 140 / 141 / 142 UNIT 143
1188 1188 180 946 946 576 935 935 180 180 794 467
DESIGN WATER DEMAND SUMMARY FOR ISBL – (UPPER SECTION) Fire Zone Label Description
Remarks
1188
16.1.2
03 04 05 06 10 11 12 13 14 16 17 25 27
Zone Water Demand m3/h
UNIT 101-1 / 104-1 / 105-1 UNIT 101-2 / 104-2 / 105-2 UNIT 101-3 / 104-3 / 105-3 UNIT 101-4 / 104-4 / 105-4 UNIT 106-1 / 2 / 3 / 4 / 5 / 6 UNIT 107-1 / 116-1 UNIT 107-2 / 116-2 UNIT 108-1 / 108-2 UNIT 108-1 / 108-2 / 144 UNIT 111-1 / 111-2 / 111-3 UNIT 111-4 / 111-5 / 111-6 UNIT 131 / 145 / 146 UNIT 147 / 148
662 662 662 662 293 1005 1005 180 180 477 477 300 868
DESIGN WATER DEMAND SUMMARY FOR OSBL Fire Zone Label Description
Remarks
1005
16.1.3
24
Zone Water Demand m3/h
UNIT 143
DESIGN WATER DEMAND
Remarks
616
616
NOTE) 1. For the detail fire water demand evaluation, refer to “FIRE WATER DEMAND CALCULATION NOTE (Doc.N. NC 2017 999 1900 002)” Page 48 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
16.2 FIRE WATER SYSTEM MAIN FACILITIES
Label
FIRE WATER SYSTEM FACILITIES Description
Design Capacity Design Pressure m3/h - m3 bar g
130-T-101
Fire Water Storage Tank (ISBL)
13,940 m3
130-T-102
Fire Water Storage Tank (OSBL)
5,900 m3
130-P-101 A/B
Electric Motor Driven Fire Water Pumps (ISBL-Lower Section)
30 m3 /h
10 bar g
130-P-102 A
Electric Motor Driven Fire Water Pump (ISBL-Lower Section)
800 m3 /h
10 bar g
130-P-102 B/C
Diesel Engine Driven Fire Water Pumps (ISBL-Lower Section)
800 m3 /h
10 bar g
130-P-103 A/B
Electric Motor Driven Fire Water Pumps (ISBL-Upper Section)
30 m3 /h
13 bar g
130-P-104 A
Electric Motor Driven Fire Water Pump (ISBL-Upper Section)
800 m3 /h
13 bar g
130-P-104 B/C
Diesel Engine Driven Fire Water Pumps (ISBL-Upper Section)
800 m3 /h
13 bar g
130-P-105 A/B
Electric Motor Driven Fire Water Pumps (OSBL)
30 m3 /h
9.5 bar g
130-P-106 A
Electric Motor Driven Fire Water Pump (OSBL)
500 m3 /h
9.7 bar g
130-P-106 B/C
Diesel Engine Driven Fire Water Pumps (OSBL)
500 m3 /h
9.7 bar g
130-PCV-0006
Min. Flow Control Valve - main fire pump (ISBL-Lower Section)
130-PCV-0007
Min. Flow Control Valve – jockey fire pump (ISBL-Lower Section)
130-PCV-0026
Min. Flow Control Valve - main fire pump (ISBL-Upper Section)
130-PCV-0027
Min. Flow Control Valve – jockey fire pump (ISBL-Upper Section)
130-PCV-0046
Min. Flow Control Valve - main fire pump (OSBL)
130-PCV-0047
Min. Flow Control Valve – jockey fire pump (OSBL)
130-PSV-0101
Safety Valves - design pressure control (130-P-102C)
130-PSV-0102
Safety Valves - design pressure control (130-P-102B)
130-PSV-0103
Safety Valves - design pressure control (130-P-104C)
130-PSV-0104
Safety Valves - design pressure control (130-P-104B)
130-PSV-0105
Safety Valves - design pressure control (130-P-106C)
130-PSV-0106
Safety Valves - design pressure control (130-P-106B)
Page 49 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
16.3 EQUIPMENT COVERED BY WATER SPRAY DELUGE
SYSTEM GROUPING Deluge Valve No.
Label
RISK EQUIPMENT Description
DV-0101~0107
100-X-101
SLUG CATCHER
DV-0201~0207
100-X-201
SLUG CATCHER
DV-0208
100-L-102/202
RAW GAS SCRAPER TRAP
DV-0301
105-C-102
DEETHANIZER
105-D-102
DEETHANIZER REFLUX DRUM
105-E-104
DEETHANIZER REBOILER
105-E-105
DEETHANIZER CONDENSER
105-P-102 A/B
DEETHANIZER REFLUX PUMPS
105-C-101
DEMETHANIZER
105-D-101
FEED FLASH K.O. DRUM
105-K-101
TREATED GAS COMPRESSOR
105-P-101 A/B
DEETHANIZER TRANSFER PUMPS
DV-0303
104-K-101 A/B
DRIERS REGENERATION COMPRESSORS
DV-0304
104-D-101
DRIERS INLET SEPARATORS
104-E-102
WET GAS CHILLER
101-C-101
AMINE ABSORBER
101-D-101
FEED-GAS K.O.DRUM
101-D-102
TREATED GAS K.O. DRUM
101-F-101
FEED GAS FILTER-COALESCER
105-C-202
DEETHANIZER
105-D-202
DEETHANIZER REFLUX DRUM
105-E-204
DEETHANIZER REBOILER
105-E-205
DEETHANIZER CONDENSER
105-P-202 A/B
DEETHANIZER REFLUX PUMPS
105-C-201
DEMETHANIZER
105-D-201
FEED FLASH K.O. DRUM
105-K-201
TREATED GAS COMPRESSOR
105-P-201 A/B
DEETHANIZER TRANSFER PUMPS
DV-0403
104-K-201 A/B
DRIERS REGENERATION COMPRESSORS
DV-0404
104-D-201
DRIERS INLET SEPARATORS
104-E-202
WET GAS CHILLER
101-C-201
AMINE ABSORBER
101-D-201
FEED-GAS K.O.DRUM
101-D-202
TREATED GAS K.O. DRUM
101-F-201
FEED GAS FILTER-COALESCER
105-C-302
DEETHANIZER
105-D-302
DEETHANIZER REFLUX DRUM
105-E-304
DEETHANIZER REBOILER
105-E-305
DEETHANIZER CONDENSER
105-P-302 A/B
DEETHANIZER REFLUX PUMPS
DV-0302
DV-0305
DV-0401
DV-0402
DV-0405
DV-0501
REMARKS
Page 50 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
(Continued) SYSTEM GROUPING Deluge Valve No. DV-0502
Label
RISK EQUIPMENT Description
105-C-301
DEMETHANIZER
105-D-301
FEED FLASH K.O. DRUM
105-K-301
TREATED GAS COMPRESSOR
105-P-301 A/B
DEETHANIZER TRANSFER PUMPS
DV-0503
104-K-301 A/B
DRIERS REGENERATION COMPRESSORS
DV-0504
104-D-301
DRIERS INLET SEPARATORS
104-E-302
WET GAS CHILLER
101-C-301
AMINE ABSORBER
101-D-301
FEED-GAS K.O.DRUM
101-D-302
TREATED GAS K.O. DRUM
101-F-301
FEED GAS FILTER-COALESCER
105-C-402
DEETHANIZER
105-D-402
DEETHANIZER REFLUX DRUM
105-E-404
DEETHANIZER REBOILER
105-E-405
DEETHANIZER CONDENSER
105-P-402 A/B
DEETHANIZER REFLUX PUMPS
105-C-401
DEMETHANIZER
105-D-401
FEED FLASH K.O. DRUM
105-K-401
TREATED GAS COMPRESSOR
105-P-401 A/B
DEETHANIZER TRANSFER PUMPS
DV-0603
104-K-401 A/B
DRIERS REGENERATION COMPRESSORS
DV-0604
104-D-401
DRIERS INLET SEPARATORS
104-E-402
WET GAS CHILLER
101-C-401
AMINE ABSORBER
101-D-401
FEED-GAS K.O.DRUM
101-D-402
TREATED GAS K.O. DRUM
101-F-401
FEED GAS FILTER-COALESCER
103-C-101
CONDENSATE STABILIZER
103-D-105
CONDENSATE DESALTER
103-E-103
STABIZER REBOILER
103-E-104
STABIZER SIDE REBOILER
103-P-102 A/B
STABILIZED REFLUX PUMPS
103-D-101
PREFLASH DRUM
103-D-106
CONDENSATE DEGASSING DRUM
103-E-101 A/B
CONDENSATE PREFLASH HEATER
103-P-101 A/B
DESALTER FEED PUMPS
103-D-103
2ND STAGE OFF GAS COMPRESSOR SUCTION DRUM
103-K-101
OFF GAS COMPRESSOR
100-D-101
HIGH PRESSURE SEPARATOR
100-D-102
HIGH PRESSURE SEPARATOR
DV-0505
DV-0601
DV-0602
DV-0605
DV-0801
DV-0802
DV-0803 DV-0804
REMARKS
Page 51 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
(Continued) SYSTEM GROUPING Deluge Valve No. DV-0901
Label
RISK EQUIPMENT Description
103-C-201
CONDENSATE STABILIZER
103-D-205
CONDENSATE DESALTER
103-E-203
STABIZER REBOILER
103-E-204
STABIZER SIDE REBOILER
103-P-202 A/B
STABILIZED REFLUX PUMPS
103-D-201
PREFLASH DRUM
103-D-206
CONDENSATE DEGASSING DRUM
103-E-201 A/B
CONDENSATE PREFLASH HEATER
103-P-201 A/B
DESALTER FEED PUMPS
103-D-203
2ND STAGE OFF GAS COMPRESSOR SUCTION DRUM
103-K-201
OFF GAS COMPRESSOR
100-D-201
HIGH PRESSURE SEPARATOR
100-D-202
HIGH PRESSURE SEPARATOR
DV-1001
106-K-101
EXPORT GAS COMPRESSOR
DV-1002
106-K-201
EXPORT GAS COMPRESSOR
DV-1003
106-K-301
EXPORT GAS COMPRESSOR
DV-1004
106-K-401
EXPORT GAS COMPRESSOR
DV-1005
106-K-501
EXPORT GAS COMPRESSOR
DV-1006
106-K-601
EXPORT GAS COMPRESSOR
DV-1101
107-C-101
DEPROPANIZER
107-D-101
DEPROPANIZER REFLUX DRUM
107-E-101
DEPROPANIZER REBOILER
107-P-101 A/B
DEPROPANIZER REFLUX PUMPS
107-P-107 A/B
PROPANE FEED PUMPS
107-C-102
DEBUTANIZER
107-D-102
DEBUTANIZER REFLUX DRUM
107-E-102
DEBUTANIZER REBOILER
107-P-102 A/B
DEBUTANIZER REFLUX PUMPS
107-P-103 A/B
BUTANE FEED PUMPS
107-P-105 A/B
CONDENSATE CIRCULATION PUMPS
DV-1103
116-K-101 A/B
ETHANE REGENERATION GAS COMPRESSOR
DV-1104
116-D-112
TREATED GAS K.O. DRUM
116-E-112
REBOILER
107-C-201
DEPROPANIZER
107-D-201
DEPROPANIZER REFLUX DRUM
107-E-201
DEPROPANIZER REBOILER
107-P-201 A/B
DEPROPANIZER REFLUX PUMPS
107-P-207 A/B
PROPANE FEED PUMPS
DV-0902
DV-0903 DV-0904
DV-1102
DV-1201
REMARKS
Page 52 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
(Continued) SYSTEM GROUPING Deluge Valve No. DV-1202
Label
RISK EQUIPMENT Description
107-C-202
DEBUTANIZER
107-D-202
DEBUTANIZER REFLUX DRUM
107-E-202
DEBUTANIZER REBOILER
107-P-202 A/B
DEBUTANIZER REFLUX PUMPS
107-P-203 A/B
BUTANE FEED PUMPS
107-P-205 A/B
CONDENSATE CIRCULATION PUMPS
DV-1203
116-K-201 A/B
ETHANE REGENERATION GAS COMPRESSOR
DV-1204
116-D-212
TREATED GAS K.O. DRUM
116-E-212
REBOILER
110-D-103
DEGASSING DRUM
110-E-101 A/B
CONDENSATE PREFLASH HEATER
110-E-102
CONDENSATE SECOND HEATER
110-E-103
CONDENSATE FINAL HEATER
110-P-101
STABILIZED CONDENSATE PUMP
110-D-101
PREFLASH DRUM
110-D-102
FLASH DRUM
DV-1601
111-K-101
REFRIGERANT COMPRESSOR
DV-1602
111-D-103
REFRIGERANT SURGE DRUM
111-P-101
PROPANE RECOVERY PUMP
111-K-301
REFRIGERANT COMPRESSOR
111-P-301
PROPANE RECOVERY PUMP
DV-1604
111-K-201
REFRIGERANT COMPRESSOR
DV-1605
111-D-203
REFRIGERANT SURGE DRUM
111-P-201
PROPANE RECOVERY PUMP
DV-1701
111-K-401
REFRIGERANT COMPRESSOR
DV-1702
111-D-403
REFRIGERANT SURGE DRUM
111-P-401
PROPANE RECOVERY PUMP
111-K-601
REFRIGERANT COMPRESSOR
111-P-601
PROPANE RECOVERY PUMP
DV-1704
111-K-501
REFRIGERANT COMPRESSOR
DV-1705
111-D-503
REFRIGERANT SURGE DRUM
111-P-501
PROPANE RECOVERY PUMP
DV-1801
113-D-112
DISULFIDES SEPARATOR
DV-1802
114-C-111
PROPANE EXTRACTOR
114-D-111
CAUSTIC FINISHING DRUM
114-D-112
PROPANE CAUSTIC SETTLER
114-F-111
PROPANE SAND FILTER
114-P-111 A/B
PROPANE / WATER RECIRCULATING PUMP
115-P-101 A/B
BUTANE REGENERATION PUMP
115-P-103
BUTANE PRODUCT PUMP
DV-1501
DV-1502
DV-1603
DV-1703
DV-1803
REMARKS
Page 53 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
(Continued) SYSTEM GROUPING Deluge Valve No. DV-1804
Label
RISK EQUIPMENT Description
REMARKS
113-D-111
C4 WASHING DRUM
113-P-112 A/B
SWEET C4 PUMP
115-C-111
BUTANE EXTRACTOR
115-D-111
BUTANE CAUSTIC SETTLER
115-F-111
BUTANE SAND FILTER
115-P-111 A/B
BUTANE / WATER RECIRCULATING PUMP
114-D-101 A/B
RUNDOWN PROPANE DRYER
114-P-101 A/B
PROPANE REGENERATION PUMP
114-P-103
PROPANE PRODUCT PUMP
DV-1901
113-D-212
DISULFIDES SEPARATOR
DV-1902
114-C-211
PROPANE EXTRACTOR
114-D-211
CAUSTIC FINISHING DRUM
114-D-212
PROPANE CAUSTIC SETTLER
114-F-211
PROPANE SAND FILTER
114-P-211 A/B
PROPANE / WATER RECIRCULATING PUMP
115-P-201 A/B
BUTANE REGENERATION PUMP
115-P-203
BUTANE PRODUCT PUMP
113-D-211
C4 WASHING DRUM
113-P-212 A/B
SWEET C4 PUMP
115-C-211
BUTANE EXTRACTOR
115-D-211
BUTANE CAUSTIC SETTLER
115-F-211
BUTANE SAND FILTER
115-P-211 A/B
BUTANE / WATER RECIRCULATING PUMP
114-D-201 A/B
RUNDOWN PROPANE DRYER
114-P-201 A/B
PROPANE REGENERATION PUMP
114-P-203
PROPANE PRODUCT PUMP
142-D-101
HC LIQUID BURNER FEED DRUM
140-D-202
LP FLARE KO DRUM
140-D-203
MP FLARE KO DRUM
140-D-201
HP WET FLARE KO DRUM
140-D-204
HP COLD FLARE KO DRUM
140-D-102
LP FLARE KO DRUM
140-D-103
MP FLARE KO DRUM
DV-2204
140-D-101
HP WET FLARE KO DRUM
DV-2205
140-D-104
HP COLD FLARE KO DRUM
140-D-105
LLP GAS HEADER KO DRUM
GA-2301
143-T-102
OFF-SPEC. CONDENSATE STORAGE TANK
MANUAL SYS.
GA-2401,2402
143-T-101 A
CONDENSATE STORAGE TANKS
MANUAL SYS
GA-2403,2404
143-T-101 B
CONDENSATE STORAGE TANKS
MANUAL SYS
GA-2405,2406
143-T-101 C
CONDENSATE STORAGE TANKS
MANUAL SYS
GA-2407,2408
143-T-101 D
CONDENSATE STORAGE TANKS
MANUAL SYS
DV-1805
DV-1903 DV-1904
DV-1905
DV-2201
DV-2202 DV-2203
Page 54 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
(Continued) SYSTEM GROUPING Deluge Valve No. GA-2701
Label
RISK EQUIPMENT Description
REMARKS
147-P-101 A/B/C
PROPANE LOADING PUMPS
MANUAL SYS
147-P-102
PROPANE CIRCULATING PUMP
MANUAL SYS
147-P-103 A/B/C
PROPANE LOADING PUMPS
MANUAL SYS
147-P-104
PROPANE CIRCULATING PUMP
MANUAL SYS
148-P-101 A/B/C
BUTANE LOADING PUMPS
MANUAL SYS
148-P-102
BUTANE CIRCULATING PUMP
MANUAL SYS
148-P-103 A/B/C
BUTANE LOADING PUMPS
MANUAL SYS
148-P-104
BUTANE CIRCULATING PUMP
MANUAL SYS
147-K-101 A
REFRIGERANT COMPRESSOR
147-D-107
LPG FLARE K.O DRUM
147-K-101 B
REFRIGERANT COMPRESSOR
147-P-106
PROPANE RECOVERY PUMP
DV-2703
147-K-102 A/B
PROPANE BOIL OFF GAS COMPRESSOR
DV-2704
147-D-104
REFRIGERANT SURGE DRUM
147-E-101
LOW PRESSURE PROPANE CHILLER
147-E-102
MEDIUM PRESSURE PROPANE CHILLER
147-E-103
HIGH PRESSURE PROPANE CHILLER
147-E-104
PROPANE BOIL OFF GAS CONDENSER
148-E-101
HIGH PRESSURE BUTANE CHILLER
148-E-102
MEDIUM PRESSURE BUTANE CHILLER
148-E-103
BUTANE CIRCULATION SUB COOLER
147-P-109 A/B
RECOVERED PROPANE TRANSFER PUMPS
GA-2702 GA-2703 GA-2704 DV-2701 DV-2702
Page 55 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
16.4 FIRE PROTECTION EQUIPMENT SUMMARY
8
8
5
U101-2/U104-2/U105-2
12
2
3
7
8
5
U101-3/U104-3/U105-3
12
2
3
7
8
5
U101-4/U104-4/U105-4
12
2
4
8
8
U102
14
1
2
4
U106
6
3
7
14
7
6
U107-2/U116-2
14
2
6
12
8
4
U107-2/U116-2
14
2
2
4
8
4
U108
34
3
8
17
9
5 10
4
2
5
U110
4
2
5
4
2
U111-2/2/3
9
2
3
6
7
5
U111-4/5/6
9
2
3
8
7
5
U113-2/U114-2/U115-2
6
2
6
12
8
5
U113-2/U114-2/U115-2
6
2
3
7
8
5
U120/U131
3
1
5
5
10
12
10
U109/U122
U120/U161/U162/U165 U121/U123/U124
6
3
7
U125
1
2
4
U126/U127/U128/U132
5
4
7
U129
3
2
5
U130
2
4
9
U131/U145/U146
7
1
5
12
U140/141/142
4
1
3
7
U143(OFF-SPEC)
2
1
2
5
1
U143(CONDENSATE)
6
4
24
45
8
20
6
16
35
U147/148
General purpose Fire Truck
4
Water/Foam/Dry Chem. Truck
2
Mobil Water/Foam Monitor
12
Alcohol Foam Concentrate Drum
4
U101-2/U104-2/U105-2
FFFP Foam Concentrate Drum
4
7
CO2 Total Flooding System (PKG)
7
4
Hosereel
4
2
Automatic Dry Powder System
2
1
Rimseal Foam Pourer set
1
12
15
Auto. Rimseal foam Package
12
U100-2/U103-2
4
Manual Deluge Water System
U100-2/U103-2
Auto. Deluge Water System
13
Fixed Water / Foam Monitor
Fire Water Hydrant
7
Fixed Water Monitor
Hose Cabinet
6
U100
6 Kg CO2 extinguishers
50 Kg Dry Chem. extinguisher
8
Plant area
6 Kg Water extinguishers
12 Kg Dry Chem. extinguisher
FIRE PROTECTION EQUIPMENT SUMMARY
6 7
8
5
4
4
2 24
40
4 4
2
Page 56 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.
IRAN – South Pars Gas Field – Phases 4 & 5 Doc. N. RP 2017 999 1900 002
Rev. 6
(Continued)
Workshop Building
7
2
6
4
23
Substation--SS2
19
1
Substation-SS3
19
1
Substation-SS4
17
1
Substation--SS5
16
1
Substation-SS6
15
1
Substation-SS9
12
1
Substation-SS10
12
1
Substation-SS11
14
1
11
1
Main Gate House Secondary Gate House-1 Secondary Gate House-2 Secondary Gate House-3
1
1
1
Substation-SS1
Substation-SS12
General purpose Fire Truck
2
Water/Foam/Dry Chem. Truck
1
Mobil Water/Foam Monitor
2
Alcohol Foam Concentrate Drum
2
FFFP Foam Concentrate Drum
2
Fire Fighting Station
Hosereel
9
CO2 Total Flooding System (PKG)
Automatic Dry Powder System
Rimseal Foam Pourer set
Auto. Rimseal foam Package
Manual Deluge Water System
Auto. Deluge Water System
Fixed Water / Foam Monitor
4
4
Fixed Water Monitor
4
2
Administration Bulding
Fire Water Hydrant
6 Kg CO2 extinguishers
9
Control Building
Plant area
Hose Cabinet
6 Kg Water extinguishers
50 Kg Dry Chem. extinguisher
12 Kg Dry Chem. extinguisher
FIRE PROTECTION EQUIPMENT SUMMARY
1 1 1 1
Page 57 of 57 This document is the property of N.I.O.C.. Any unauthorised attempt to reproduce it, in any form, is strictly prohibited.