ASIR CPS EXTENSION PROJECT

TCE CONSULTING ENGINEERS LIMITEDCONTENTS

i30421007-3CL-00018-P0CFIRE DETECTION AND ALARM SYSTEM SHEET OF iOF 4

SAUDI ELECTRICITY COMPANY

EASTERN OPERATING AREA

Dammam, Saudi Arabia

GENERATION EXPANSION OF ARAR POWER PLANT

(CONTRACT NO :30421007/00)

DESIGN BASIS

FOR

FIRE DETECTION AND ALARM SYSTEM

DOCUMENT NO. : 30421007-3CL-00018-P0C

JUNE 2005

ENGINEERING CONSULTANT

TCE CONSULTING ENGINEERS LIMITED

73/1, ST. MARKS ROAD

BANGALORE 560 001

INDIA

CONTRACTOR:

AL-TOUKHI COMPANY FOR INDUSTRY & TRADING

P.O. BOX 497, RIYADH 11411, KINGDOM OF SAUDI ARABIA

TEL. 00966-1-4633660 : FAX. 009661-4631150

CONTENTSCLAUSE No.DESCRIPTIONPAGE No.

1.0INTRODUCTION1

2.0OBJECT2

3.0REFERENCES3

4.0AREAS TO BE PROTECTED4

5.0TYPES OF FIRE DETECTION/PROTECTION4

6.0MAIN FIRE ALARM PANEL & LOCAL FIRE ALARM PANEL6

7.0DESCRIPTION OF SYSTEM6

1.0 INTRODUCTION:

1.1 Al-Toukhi company for Industry & Trading has been awarded turnkey contract for Open Cycle Gas Turbine based CPS expansion project at Arar of Saudi Electric Company-Eastern Operation Area (SEC-EOA), Saudi Arabia.

1.2 The project consists of design, engineering, procurement, installation, testing and commissioning of two (2) Nos. 60.16MW @ 50(C, PG7121 (EA) model Gas Turbine Generator unit of GE make along with associated Generator Transformer and other balance of plant electro-mechanical equipment.

2.0 OBJECT:2.1The scope of this document is to describe the fire detection and Alarm system proposed to be provided for different buildings and associated auxiliaries/facilities for the extension area completely.

3.0 REFERENCES:

3.1 SEC-EOAs specification PTS-1022

3.2 SEC-ERB Engineering Standard for Fire Detection and Alarm System No.SES-B-001

3.3 SES-P-119.21: Fire and Loss Prevention requirements.

3.4 90-SMSS-1: Specification for Fire Protective Signaling Panel.

3.5 NFPA-72: National Fire Alarm Code.

3.6 SEC-EOAs approved list for Fire Detection and Protection Equipment & Devices (Brands and manufacturers).

3.7 01-SMSS-01, Rev-4 - General Material Standard.

4.0 AREAS TO BE PROTECTED

4.1 The following areas of Arar power Plant would be protected by providing fire detectors.

a) GTG Area

b) Switchgear Rooms

c) Battery Room

d) Fuel Oil Tank

e) Fuel Oil Unloading/Forwarding areas.

f) Transformer Yards

g) Corridors and Staircases

5.0TYPE OF FIRE DETECTION / PROTECTION

5.1The following type of detectors as listed below in Table-1 would be provided.

Table-1: Detectors for various areas in the plant

AreaType of Detector

GTG area- For G.E. packages & containers: G.E. standard fire system will be provided.

- For GTG hall ceiling: Heat detectors.

- Manual Fire Alarm Stations (MFAS).

Switchgear roomsOptical and Ionization type smoke detectors and Manual Fire Alarm Stations (MFAS).

Battery roomsCombination of Flame and Heat Detectors(Explosion proof).

Fuel oil tankExplosion proof UV Flame Detectors and Heat detectors will be

Provided.

Fuel Oil Unloading / forwarding areas Fuel oil unloading / Forwarding Shed : As per clause 4.6 of SES-B-001, Heat and Flame Detectors will be provided.

Attendant Room: Ionization & Photoelectric smoke detectors will be provided.

Transformer YardExplosion proof type heat detectors. Manual Fire Alarm Stations (MFAS)

Corridors and Stair cases (if applicable)Optical & Ionization smoke detector, Manual Fire Alarm Stations (MFAS)

Unit Switchgear RoomOptical & Ionization type smoke detectors.

HVAC DuctsIonisation type smoke detectors (as per Cl.No.3.2.2.i of SES-B-001)

Cable Basement, Cable trenchesCombination of optical & Ionisation type smoke detectors.

Offices (if applicable)Combination of optical & Ionisation type smoke detectors.

6.0 MAIN FIRE ALARM PANEL & LOCAL FIRE ALARM PANEL AND REPEATER PANEL:

6.1The Fire Detection and Alarm System proposed for the Power Plant would consist of Main Fire Alarm Panel located in existing Control room.

6.2Local fire alarm panels would be provided in Main switchgear building, GTG hall, fuel oil area and in transformer areas with addressable type detectors/Manual Fire Alarm Stations / hooters located in different parts of the plant.

The local control panels will be connected to the main Fire Alarm panel (mentioned in clause 6.1). Repeater panel (mentioned below in clause 6.3) shall be connected to main Fire Alarm panel.

6.3As per clause 6.21 of PTS-1022, a Fire Alarm repeater panel shall be provided at plant control room. The repeater panel shall be as per 90-SMSS-1 Rev.3

7.0DESCRIPTION OF SYSTEM.7.1Control functions for the fire Alarm system shall be performed by Fire Alarm panels (main & local).

7.2Fire detection and alarm system provided for plant will be of addressable type. The status of the detection system from all areas of the plant wherever the detectors are located will be available in the corresponding main alarm panel and local fire alarm panels.

7.3Detectors provided in various areas in the plant would initiate alarms and release of water / Foam / CO2 as per Fire fighting scheme.

7.4The manual fire alarm stations provided in various areas shall initiate audio / visual alarms in the main fire alarm panel and respective local panels and bells / hooters in the protected area.

7.5The fire alarm panels will be addressable types with the following features:

(a) Individual detector addressability.

(b) Continuous supervision of detector connecting lines, individual detector performance / operation and disconnection/ removal of detectors

(c) Discrimination between a real fire alarm and false alarm.

(d) Pre alarm in case any detector requires maintenance.

(e) Automatic re-calibration of sensitivity levels of over / under sensitive detectors.

(f) Programmed activation of various interlocks with fire protection system and other associated systems.

(g) Programmed activation of sequence of events to be carried out in case of fire in any particular protective area, including activation of hooter, siren, etc.

(h) Real time clock to enable events to be referenced against time and date.

(i) The Main fire alarm panel also gets status/alarm signals from Foam / fire water spray / CO2 system from the respective local panels.

7.6The dimension, display/indication, alarm, colour, protection class of the fire alarm system panel would be as per the manufacturers standard.

7.7Visual & audible alarm indication will be provided in the fire alarm panel.

7.7.a)The fire alarm & detection system if used with the protection system shall be provided with pre- discharge alarm as per PTS & NFPA standards.

7.8Necessary control and interlocking functions such as switching off of HVAC system wherever applicable will be provided.

7.9Fire Alarm system Panel would be provided with a automatic telephone call transmitter

7.10 Main Fire Alarm system panel would be provided with Data Printer.

7.11 Equipment warning signs will comply as per SES-P-119.21.

7.12. Each detector will be provided with indicating lamps glowing steadily to indicate that it has operated which will otherwise flash intermittently to indicate the healthy condition of the detector and sensing circuits.

7.13. Fire Alarm repeater panel, with indications only, shall have items as indicated in clause 4.5 of 90-SMSS-1 Rev.3.

Switches shall be provided on the front of the panel for acknowledging fire alarms, supervisories, security conditions and system troubles.

7.14Fire detection and alarm system will be as per Cl.No.6.21 of PTS-1022

7.15Fire Detectors

7.15.1The spacing of detectors will be in accordance with NFPA-72.

7.15.2For detectors mounted below false flooring, the response indicators will be hooked up to the fire alarm panel to identify the detector actuated.

7.15.3Manual Fire Alarm Stations (MFAS), as per SES-B-001, will be located in strategic areas, in the exit routes and in particular on floor landings of stair cases and near exits from the building / area such that the travel distance to the nearest MFAS would not exceed 30 meters. The manual pull station shall be provided with a separate transparent, unbreakable, lift to open front cover as per clause 3.2.1 of SES-B-001. Also, additional protection cover shall be provided for the manual pull station.

7.15.5The standard of all the fire detection appliances like detectors, hooters, flashing lights, beacons, manual fire alarm stations, etc. shall be as per the guidelines of NFPA.

7.15.5When detectors are located below false floors, above false ceilings or in other inaccessible / invisible positions, response indicator of each detector and test switch will be mounted on a separate box which will be suitable for mounting on the wall. If the detectors are mounted above the false ceiling, response indicators with test switch will be mounted directly below the detector (on the false roof).

7.15.6The quantity of fire detectors and call points to be installed in each of the areas will be based on NFPA stipulations. The zones of individual detectors will overlap and no blind zone will be left. However, the actual quantity of detectors required, taking into consideration the obstruction due to floor beams etc. so as to obtain complete coverage, will be worked out by the Vendor based on the final drawings of various buildings during detailed engineering.

7.15.7Transformers, fuel tanks, fuel unloading & forwarding areas and transformer yard fire detectors shall be all explosion proof as per SEC standards SES-B-001section 4.0. Further, the battery room fire detectors shall be explosion proof suitable for hazardous classified areas.

7.15.8Abort switch shall be provided and installed at all areas where gas-extinguishing system shall be applied.

7.16Power Supply

7.16.1Normal 220V AC or 127V AC, 60Hz power supply will be provided for the Fire Detection and Alarm system panel. Further necessary distribution of power supply and conversion of voltage as required for the Fire system panel will be carried out by the vendor.

7.16.2 Fire Detection and Alarm system panel will be provided with a backup power supply unit along with single sealed maintenance free lead acid battery, battery charger, with a battery back up time of 72 hours in the event of normal AC power failure.

7.17Wiring7.17.1 1.5/2.5 Sq.mm, PVC insulated copper conductors in rigid steel conduits would be used for wiring. The rigid steel conduits would be painted red when exposed. When embedded, PVC conduits would be used. EMBED Word.Picture.8

P0C

02-06-2005MPSR

P0B

18-03-2005UHMSR

P0A

23-11-2004MPSR

REV NO . DATEPREPARED BYCHECKED BYCLEARED BYAPPROVED BY

FILE NAME: F120R1

_1141145261.doc