30621127-000-3BD-EE-00100-FPS-00

30621127-000-3CL-EE-00002REV 01

3BD 000

PMK

Pipe Sizing Calculation for Nitrogen System

00A AM KB PK

EE-00100-FPS

For SEC Review

THIS DRAWING HAS BEENPREPARED, REVIEWED, AND APPROVED BY

SARGENT & LUNDY LLC

SARGENT & LUNDY LLC

55 EAST MONROE STREETCHICAGO, ILLINOIS 60603-5780

11May2010 FOR BEMCO/DOOSAN COMMENT AKD

Fire Protection System Description

04.21.10 05.11.10

00A

MHP

00B 17May2010 MHP FOR BEMCO/DOOSAN COMMENT KB PK AKD

05.17.10

00B

00C 18May2010 MHP FOR BEMCO/DOOSAN COMMENT KB PK AKD

05.18.10

00C

000 20May2010 MHP FOR APPROVAL KB PK AKD

05.20.10

000

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12620-001 QURAYYAH COMBINED CYCLE PLANT

Sargent & Lundy LLC SYSTEM DESCRIPTION DOCUMENT NO. EE-00100-FPS

DOCUMENT NO. EE-00100-FPS

QURAYYAH COMBINED CYCLE PLANT

FIRE PROTECTION SYSTEM

SYSTEM DESCRIPTION

Revision Date Purpose Prepared Reviewed Approved

000 20 May 2010 FOR APPROVAL MHP KB AKD/PMK

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1. FIRE PROTECTION SYSTEM

1.1 System Function

The Fire Protection System (FP) provides fire protection water for the Qurayyah Combined Cycle Plant. The Qurayyah Open Cycle fire water network is extended for the Combined Cycle facilities. An additional Sea Water Diesel Engine-Driven Fire Pump is provided as a back-up to the Open Cycle Fire Pumps. The Fire Protection System provides fire protection water to the fire hydrant system, fixed water spray system and foam and sprinkler systems. In addition to the water based system, a Novec 1230 clean agent extinguishing system is provided for all the switchgear/control rooms (as applicable) in the Qurayyah Combined Cycle Plant. The fire detection and alarm system will be interfaced with the Main Fire Alarm Panel of the Qurayyah Open Cycle Plant, located in the Central Control Room.

For details, please refer to the current Open Cycle Fire Protection P&IDs (Dwg No. EA-788221, Sheets 1-7), and current Combined Cycle Fire Protection P&IDs (Dwg. No. EA-682817, Sheets 1-7).

1.2 General Description

General

The power plant Fire Protection System consists of the following sub-systems:

Fire hydrants - yard mains and hydrants around all buildings and internal standpipe system for buildings

Outdoor manual foam cabinet Water spray (deluge) systems Automatic wet sprinkler systems Automatic foam / water spray deluge system Novec 1230 for switchgear/control rooms Portable fire extinguishers Fire detection and alarm system

The fire protection water required for the above systems is supplied by the header/loop of the Qurayyah Open Cycle Plant. Additionally, a vertical Sea Water Diesel Engine-Driven Fire Pump will provide water at the sea water intake pump shelter as a back-up to the Open Cycle Fire Protection System. The fire water pipelines are laid above ground wherever possible, to be consistent with the Open Cycle Plant. Fire protection systems will be provided as required by the Project Technical Specification (PTS), and they will be designed, installed, and tested in accordance with the applicable NFPA codes and standards, as detailed in Section 1.2.1. The fire protection systems are outlined in Table-A (see Annexure-1).

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1.2.1 Codes and Standards

The standards and codes listed below are for the design and construction of the Fire Protection System.

BS British Standard

KKS Kraftwerk-Kennzeichen-System

IEC International Electrotechnical Commission

FM Factory Mutual

NFPA National Fire Protection Association, Codes, Standards, and Recommended Practices (NFPA 10, 13, 14, 15, 20, 24, 72, 1961, 2001)

SEC-ERB TMSS Saudi Electricity Company-Eastern Region Branch Material Standard Specification (SES-P-119-21, SES-B-001 Rev. 01, 90-SMSS-01)

UL Underwriters Laboratories

1.2.2 Fire Water System

The arrangement of the site fire water system will comprise of a sectionalized ring main (loop), distribution pipe work, complete with sectioning valves, isolating valves and relief valves. The distribution network will supply water to each standpipe system, water spray deluge system, sprinkler system, foam system and fire hydrants positioned around the power island (steam turbines).

The existing Open Cycle fire water network is extended to meet the requirements of the Combined Cycle facilities. See Fire Protection System composite drawing EA-683017 for details of physical arrangement and also reference the Combined Cycle Fire Protection System P&ID drawing EA-682817.

1.2.3 Hydrants

All fire hydrants are designed with spacing not greater than 60m and will comply with local Fire Department requirements. The fire hydrants are provided with two 65mm globe valve couplings, cap, chain, and a 100mm connection for fire engine pump connection.

1.2.3.1 Outdoor Hose Storage Cabinets and Equipment

One outdoor hose storage cabinet will be provided at each hydrant location, comprising of a weather-proof steel cabinet with louvers on three sides and painted red, complete

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with a break glass lock mechanism. Each hose cabinet will accommodate – two (2) 25m length x 40mm synthetic fiber impervious double jacketed hoses with instantaneous coupling, two (2) 25m length x 65mm synthetic fiber impervious double jacketed hoses with instantaneous coupling, one (1) adjustable spray nozzle, four (4) couplings, one (1) fire axe and crowbar, two (2) reducer coupling 65mm x 38mm.

1.2.4 Outdoor Manual Foam Cabinet

An outdoor manual foam cabinet system will be provided for the Clean/Dirty Lube Oil Tanks as specified in Annexure-1: Table A. The outdoor manual foam cabinet will contain the foam concentrate and hoses, which connect to the source of water from the main network.

1.2.5 Standpipe and Hose Cradle Cabinet System, Fire Hose and Nozzles

Each building will be provided with a Class III standpipe and hose station system to be located and distributed as per NFPA 14 requirements. The standpipe and hose station piping system is galvanized carbon steel. The maximum pressure at the hose stations will not exceed 7.6barg.

Hose cradles will consist of a 30m long, 38mm, single-lined, collapsible, synthetic hose mounted on a hose rack, which will be of the swinging arm type.

Hose cradles will be equipped with quick coupling BS 336 type of gun metal with adjustable jet/spray nozzles.

The fire hose will be light and flexible besides being resistant to abrasion and damage due to contact with chemicals or oil. The hose will comply with NFPA 1961.

The bursting pressure of the hose will not be less than twice its working pressure.

A 17lb, portable ABC Dry Chemical Extinguisher (cartridge type) is to be supplied inside each standpipe cabinet.

Each standpipe and hose cradle cabinet will include a single 65mm automatic pressure regulating angle valve with female instantaneous coupling connection.

The nozzles will emit a powerful, straight-jet atomized spray or a wide-spreading cone of solid water and will include fog and shut-off features.

The type of spray will be adjusted by twist control.

Nozzles are to be manufactured in light alloy and fitted with a stainless steel valve cone and designed for maximum velocity at the minimum restriction to flow. The inlet will be a male instantaneous coupling.

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1.2.6 Water Spray Deluge Systems

Water spray deluge system will be provided for the buildings as specified in Annexure-1: Table A.

Each water spray (deluge) system will be designed to provide the coverage density stated in NFPA 15.

All water spray deluge systems are automatically actuated except the steam turbine generator bearing protection system. All automatic actuation systems will be provided with local manual actuation also.

1.2.7 Automatic Wet Pipe Sprinkler System

A wet pipe sprinkler and alarm system will be provided for the buildings specified in Annexure-1: Table A.

The design density will be in accordance with NFPA 13 and local Fire Department regulations for sprinkler installations. Alarm check valves will be provided with a retard chamber.

1.2.8 Automatic Foam / Water Spray Deluge System

An automatic foam system shall be provided for the Sea Water Diesel Engine-Driven Fire Pump and day tank. The foam system will be diaphragm pressure proportioning type. The black start Sea Water Diesel Engine-Driven Fire Pump, including associated fuel oil day tank, will be protected by foam/water which will be provided by a diaphragm-type foam concentrate proportioning tank via an in-line injector. The water supply for the automatic foam system shall be fed from the fire main. System will be compatible with NFPA 16 requirements.

1.2.9 Novec 1230 Gas Extinguishing Systems

Novec 1230 Gas Extinguishing System will be provided for the buildings as specified in Annexure-1: Table A. The design of clean agent Novec 1230 gaseous fire protection systems will comply with NFPA 2001.

Each gas extinguisher system will include dedicated, fully-charged Novec 1230 main and reserve cylinders, cylinder valves, mounting brackets, automatic and manual release controls, piping and nozzles, audible and visual alarms and safety monitors. A hand trolley suitable for the transporting a single cylinder will also be provided. All gas cylinders will be UL-Listed and FM-Approved.

1.2.10 Fire Extinguishers

Portable fire extinguisher equipment complying with NFPA 10 will be provided at strategic locations in the plant and building areas.

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Travel distance will be such that portable fire extinguishers are within 22m in any direction and the maximum spacing between extinguishers will not be greater than 45m. In areas where Class B fire hazards exist, the maximum travel distance spacing will be such that portable fire extinguishers are within 15m in any direction and the maximum spacing between extinguishers will not be greater than 30m.

All outside mounted portable fire extinguishers will be supplied with a weather tight cabinet.

9-10 kg capacity dry power extinguishers for use against oil fires associated with electrical equipment (for example, oil-filled, outdoor transformers and reactive chemical storage area). The powder will be expelled from the extinguisher by compressed CO2 gas and controlled by a pistol grip nozzle attached to the discharge hose.

9-10 kg and 6 kg capacity CO2 extinguishers for use against fires associated with electrical equipment (for example, electrical switchgear/MCC/control rooms, gas storage shelter, etc). The extinguishers will be provided with fixed discharge horn and trigger valve control and trolley where required.

9-10 liters capacity CO2 gas pressure operated water extinguishers for use against ordinary small fires (for general equipment rooms). The discharge nozzle will be supplied with flexible hose and the control will be such that intermittent control is possible.

9-10 liters capacity foam extinguishers for use against small oil fires (For lube oil and Diesel engine fire pump area). The extinguishers will be pressurized with CO2 gas.

Wheeled fire extinguishers will be supplied in the area of all Unit Step-up Transformers. The extinguishers will be 68 kg capacity, dry chemical with a quick open valve and 30m of hose.

1.2.11 Fire Detection and Alarm System

The fire detection and alarm system will be as per Annexure-1: Table A for Qurayyah Combine Cycle Power Plant. The microprocessor-based main fire alarm system is an integrated fire detection, evacuation signaling and auxiliary function control system. The fire alarm system will be designed as per NFPA 72. The Open Cycle Project alarm and detection system will also monitor the Combined Cycle local fire detection, alarm and notification releasing control panels (LFARCPs). The Combined Cycle system consists of integrated, multiplex LFARCPs that will be located in the buildings/shelters and areas listed below. The LFARCPs will only transmit common alarm, common trouble, and common supervisory signals. The nature and details of the interface between the Open and Combined Cycle detection and alarm

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systems will be finalized during the detailed engineering phase as per the approved specialist vendor.

Fire alarm and detection system consists of necessary hardware, software, fire detectors, manual call points, local alarm panels, electronic sounders, beacons and interface modules. Smoke detectors of the photoelectric type and heat detectors will be suitably located to detect and provide early warning of fire risks. For outdoor equipment protection, weather-proof and explosion-proof classified area applications, heat detectors will be of the hermetically-sealed type. The following detection scheme will be adopted (to be consistent with the adopted scheme within the Open Cycle):

For indoor, non-classified areas, addressable detectors will be supplied.

Due to the unavailability of addressable explosion and weather-proof detectors for outdoor (weather-proof applications) and classified (explosion-proof applications) areas where extinguishing systems are incorporated, a detection cross-zoning concept will be applied. (This concept comprises of two detection loops per protected area, each connected to an interface module, where the extinguishing system is only actuated if at least one detector per each loop/zone is activated).

The following buildings, areas and shelters are to be provided with LFARCPs.

Each Steam Turbine (5 total). The LFARCPs will monitor the functions of the GE provided panels.

Sea Water Intake Pump House electrical building and shelter.

Hypochlorite Generation Building.

Desalination Plant: Electrical & Control Building and Chemical Storage.

Centralized Chemical Storage Building.

CO2 shelter for Steam Turbine Generator – waterbath heater area.

Instrument/ Service Air Compressor Buildings Electrical Rooms (MV/LV Electrical

Building) for Power Blocks 1 through 5: one LFARCP per block.

Warehouse.

Water Treatment Plant Area: Potable Water Remineralization, Demineralization Plant and Chemical Storage Building.

Each Novec 1230 System. However, where there are multiple Novec systems in a building or shelter, individual systems will be monitored and controlled by onecommon panel.

Lube Oil Storage Shelter.

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1.2.12 HVAC Fire Provisions

The ventilation system is segregated into fire zones by configuring the Heating, Ventilation and Air Conditioning (HVAC) and the Heating and Ventilation (H&V) system ducting with motor operated dampers and fire dampers actuated by fusible links that will isolate the affected room in the event of a fire. A fire damper prevents the spread of fire and smoke to the unaffected areas and limits the amount of air entering the affected room.

1.2.13 Fire Walls and Building Structures

All the transformers are separated from critical buildings, enclosures, and equipment either by spatial separation or by rated fire walls. The lubricating oil tank in the turbine building will be provided with a containment that is sized for 110% of the oil volume plus the volume considering ten (10) minutes of spray water flow. Penetrations for the HVAC ducts and electrical conduits passing through the fire rated floors and walls will be sealed to maintain the required fire rating/sealing. These penetration details are the responsibility of the HVAC design and the electrical design, respectively.

1.3 Fire Protection System Operation

1.3.1 Start-up Operation

Hydrant System

In case of fire at any location, the hydrant nearest to the equipment is approached. The main valve adjacent to the hydrant is opened and hose brought from the hose station nearby is fitted to the hydrant. The water or foam/water (in case of the outdoor manual foam cabinet systems) is sprayed on the fire.

Water Spray System

In case of fire at any protected equipment/area, the detection network will detect the fire and actuate the deluge valve automatically, this, in turn, will deluge the protected equipment/area. Also, spray systems can be actuated by manual intervention by operating the manual release station of the respective area under fire.

Sprinkler System

In case of fire at any protected equipment/area, the quartzoid bulb detectors located in sprinkler water header will break and water spray will initiate at the protected equipment/area.

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Sea Water Diesel Engine-Driven Fire Pump

The Sea Water Diesel Engine-Driven Fire Pump (standby) will start if the Open Cycle Electric-Driven and Open Cycle Diesel Engine-Driven Fire Pumps fail to start in case of fire or upon low fire protection header pressure. Operation, control and monitoring of the Sea Water Diesel Engine-Driven Fire Pump and diesel fuel tank will be from a local diesel engine-driven fire pump controller. Diesel fuel will be replenished in tank using barrel-mounted drum pump.

Novec 1230 Control Panel

System Design Function: Each local control panel will continuously monitor its associated fire suppression system (or systems) for fire alarms, supervisory alarms, trouble alarms, and circuit trouble alarms. Upon receipt of a fire alarm, the given panel will activate appropriate system valves, auxiliary relays, and a fire alarm bell in the area or zone affected automatically. Manual fire actuation push button will also be provided for system actuation. Upon receipt of a trouble or supervisory alarm, the panel will activate individual alarms, indicating lamps on the panel and a trouble horn at or near the panel. Trouble and supervisory alarms will be distinctive.

1.3.2 Shut-down Operation

Hydrant System

After a fire is extinguished, the main valve adjacent to the hydrant valve is closed and the hydrant is capped after three (3) minutes, to allow complete draining of hydrant. Regarding the outdoor manual foam cabinet systems, a system flush-out, foam tank replenishment, and equipment verification will be completed.

Water Spray System

After the fire is extinguished, the deluge valve is reset and the damaged detectors (if any) are replaced. The system is completely drained before starting the system/ equipment being protected.

Sprinkler System

After the fire is extinguished, the sprinkler control valve is closed and the damaged or operated sprinklers are replaced. After all repairs have been completed, the system/equipment is put back in service.

Sea Water Diesel Engine-Driven Fire Pump

In case of Sea Water Diesel Engine-Driven Fire Pump activation, the entire piping and accessories will be drained and flushed with fresh water.

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Novec 1230 Control Panel

After the Novec 1230 system discharges, the tanks will need to be removed/recharged and all equipment verified.

1.4 Interlock & Protections

The Sea Water Diesel Engine-Driven Fire Pump (standby) will start if the Open Cycle Electric-driven and Open Cycle Diesel Engine-Driven Fire Pumps fail to start in case of fire or upon low fire protection header pressure.

1.5 Instrumentation Description

The following instruments are provided under the Qurayyah Combined Cycle Project:

Level Transmitters (C00-EGF-41-CL-001, C00-EGF-41-CL-002) on the Diesel Tank (C00-EGF-41-BB-001) are provided for control of the Sea Water Diesel Engine-Driven Fire Pump (C00-SGA-41-AP-001).

Pressure Switches (C00-SGA-41-CP-102, C00-SGA-41-CP-103) on Fire Water Distribution Header, are provided for start-up control of the Sea Water Diesel Engine-Driven Fire Pump (C00-SGA-41-AP-001) when Fire Water Distribution Header pressure is low.

Local Pressure Gauge (C00-SGA-41-CP-501) at the discharge of the Sea Water Diesel Engine-Driven Fire Pump (C00-SGA-41-AP-001) is provided.

Local Pressure Gauge (C00-SGA-41-CP-504) at the discharge of the Sea Water Diesel Engine-Driven Fire Pump (C00-SGA-41-AP-001) test line is provided.

Local Flow Indicator (C00-SGA-41-CF-501) at the discharge of the Sea Water Diesel Engine-Driven Fire Pump (C00-SGA-41-AP-001) test line is provided.

1.6 Design Operating Parameters

Description Design Pressure

(barg) Design Temperature

(deg C) PDT

Carbon Steel – Cement Lined Pipes for DN 200 and above 15.67 50 QCC 0105

Carbon Steel – Galvanized Pipes for DN 150 and below 15.67 50 QCC 0083

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1.7 Technical Particulars

Sr. No. Description Unit Diesel Engine-Driven Fire Pumpa. Pump continuous stable flow

(determined per NFPA requirements for different fire scenarios)

m3/hr 1,136

b. Total Dynamic Head Required m 102 c. Location Sea Water Intake Pump Shelter d. Quantity 1

1.8 Drawings

EA-788221 P&ID Fire Protection System (Open Cycle) EA-682817 P&ID Fire Protection System (Combined Cycle) EA-683017 Fire Protection System Composite Drawing EE-00032 Fire Protection Pipe Sizing Calculation

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Annexure-1: Table A Fire Protection Systems

Building / Area Designation Detection System Steam Turbine Shelter For Power Blocks 1 through 5

FP1a FP1b FP1c FP1d FP1e FP1f FP1g FP1h FP1i FP1j FP1k

Manual pull stations at all exits

Wet Class III standpipe systems and fire hose stations.

a) Hydrogen Seal Oil Pumps

FP2a FP2b FP2c FP2d FP2e

Heat detectors (spot type) for equipment

Automatic water spray deluge. (Five separate and independent systems required).

b) Combined Lube and Hydraulic Oil Unit (including piping and surrounding floor area)


Heat detectors (spot type) for equipment

Automatic water spray deluge. (Five separate and independent systems required). Spray protection to be extended to protect the area beneath the reservoir.

c) Steam Turbine Generator Bearings


Manual operated from safe location

Manual water spray system.

d) Steam Turbine Electrical Room


Smoke detection

Novec 1230 clean agent suppression system.

Generator Step-up Transformers For Power Blocks 1 through 5 (290/386MVA)


Heat Detectors (Weather-proof, hermetically–sealed, spot type)

Automatic water spray deluge system. (Five separate and independent systems required).

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Building / Area Designation Detection System Unit Auxiliary Transformers for Steam Turbine For Power Blocks 1 through 5 (14/19MVA)




Station Transformers for Gas Turbine Generator # P12 and P15 (32/43MVA)

FP8a FP8b

Heat Detectors (Weather-proof, hermetically-sealed, spot type)

FP8a - Automatic water spray deluge system for Gas Turbine Generator # P12 ST 3. FP8b - Automatic water spray deluge system for Gas Turbine Generator # P15 ST 4.

MV/LV Block Auxiliary Transformers For Power Blocks 1 through 5 (2,000kVA)




Block MV/LV Switchgear Buildings for CCPP For Power Blocks 1 through 5


Smoke detection

Novec 1230 clean agent suppression systems. (Five separate and independent systems required).

Combined Cycle Station Auxiliary Transformers, (15/20MVA)

FP11a FP11b


FP11a - Automatic water spray deluge system –transformer CCSAT3. FP11b - Automatic water spray deluge system –transformer CCSAT4.

Combined cycle BOPT1 / BOPT2 Auxiliary Transformers (3,000kVA,)

FP12a FP12b


FP12a - Automatic water spray deluge system –transformer BOPT1. FP12b - Automatic water spray deluge system –transformer BOPT2.

HRSG (Quantity – 15)

FP13a to FP13o

Manual pull stations at strategic locations

FP13a to FP13o – Fire Hydrant.

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Building / Area Designation Detection System Lube Oil Clean and Dirty Storage Shelter

FP20a

FP20b

Heat Detectors (Quartzoid spot type) Weather proof / outdoor manual pull stations.

FP20a – Outdoor Manual Foam Cabinet for Clean/Dirty Lube Oil Tanks.

FP20b - Automatic water spray deluge system throughout shelter.

Sea Water Intake a) CW Pump Shelter FP21a Manual pull stations

at all exit

FP21a - Wet Class III standpipe systems and fire hose stations.

b) CW Pump House Electrical Building

FP22a Smoke detection

FP22a - Novec 1230 clean agent suppression system.

c) CW Balance of Plant Transformer

(2,000kVA)

FP23a FP23b


FP23a - Automatic water spray deluge system –transformer CWBOPT1. FP23b - Automatic water spray deluge system –transformer CWBOPT2.

d) CW Station Auxiliary Transformer

(4,000kVA)

FP24a FP24b


FP24a - Automatic water spray deluge system –transformer CWSAT5. FP24b - Automatic water spray deluge system –transformer CWSAT6.

Hypochlorite Generation Building

FP25a

Smoke detection

FP25a - Class III standpipe and hose reel system.

Desalination Plant a) Desalination Plant

FP26a

FP26a - Class III standpipe and hose reel system.

b) Desalination Plant Electrical & Control Building

FP27a

Smoke detection

FP27a - Novec 1230 clean agent suppression systems.

c) Chemical Storage Building for Combined Cycle Dosing

FP28b

Smoke detection

FP28b - Automatic sprinkler system for bulk ammonia storage.

d) Chemical Storage Building for Desalination Plant

FP29a FP29b

Smoke detection


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Building / Area Designation Detection System Chemical Storage Building for Combined Cycle Dosing

FP28a

Manual pull stations at all exit


CO2 Shelter For Steam Turbine Generator

FP31a


FP31a – Class III standpipe system and outdoor fire hose station to reach FP6A areas.

Instrument / Service Air Compressor Buildings For Power Blocks 1 through 5


Smoke detection

Class III standpipe and hose reel system. (Five separate and independent systems required).

Instrument/Service Air Compressor Building Electrical Rooms For Power Blocks 1 through 5


Smoke detection

Novec 1230 clean agent suppression systems for the electrical rooms. (Five separate and independent systems required).

Water Treatment Plant: a) Potable Water

Remineralization b) Demineralization Plant c) Chemical Storage Building

FP34a FP34b FP34c

Manual pull stations at all exit doors Smoke detectors for electrical & control room and laboratory

Potable Water Remineralization & Demineralization Plant FP34a - Wet Class III standpipe systems and fire hose stations. FP34b - Electrical Room Novec-1230 clean agent suppression system Chemical Storage Building. FP34c - Wet Class III standpipe systems and fire hose stations.

Warehouse FP35a FP35b FP35c

Manual pull stations at all exit Heat Detectors for transformers (Weather-proof, hermetically–sealed, spot type)

FP35a - Class III Standpipe and hose reel system. FP35b - Automatic water spray deluge system –Warehouse supply transformer. FP35c - Automatic sprinkler system for warehouse storage.

Emergency Shutdown Station of Open Cycle Power Plant

FP36a


FP36a - Class III Standpipe and hose station system.

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Building / Area Designation Detection System Diesel Engine-Driven Fire Pump and Day Tank

FP37a Heat Detectors (Weather-proof, hermetically sealed spot type)

FP37a - Automatic Foam / Water Spray Deluge Systems.

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Documents

30621127-000-3BD-EE-00100-FPS-00