OUA3-SRME-NT-0005 Rev. 1 FIRE PROTECTION DESIGN. TECHNICAL INFORMATION F....pdf

Ref.: OUA3-SRME-TN-0005 Rev.: 1 Date: 17-11-2015

SENER Ingeniera y Sistemas, S.A. Getxo, 2015 LIMITED DIFFUSION The information contained in this document is confidential and restricted, and is to be used only for the purposes established in the document. No modification, exploitation, reproduction, communication to any third party, dissemination or distribution of the whole or any part of the document is permitted without the prior written consent of SENER Ingeniera y Sistemas, S.A. Failure to respond to any request for such consent shall in no way be construed as authorization for use.

NOORo III TOWER CSP PLANT

CLIENT: CONTRACTORS:

FIRE PROTECTION DESIGN. TECHNICAL INFORMATION FOR

SOLAR FIELD AND MS AREA

FOR INFORMATION ................................... FOR DESIGN ......................................... FOR APPROVAL ...................................... FOR CONSTRUCTION ............................... REQUEST FOR OFFER - PURCHASE ................ AS BUILT .............................................

www.sener.es

Ref.: OUA3-SRME-TN-0005 Rev.: 1 Date: 17-11-2015 Page 2 of 30


SENER Ingeniera y Sistemas, S.A . 2015 LIMITED DIFFUSION

Changes Record

Rev Date Author Affected section Changes

0 20/08/15 CAF/PVO All Initial edition

1 17/11/15 CAF/PVO

5 FIRE AREAS

6 SCOPE OF SUPPLY

7 TECHNICAL REQUIREMENTS. MS area and tower REQUIREMENTS. MS

d

Signature Control

Written Checked Approved

CAF/PVO BLP JMU




INDEX

1 OBJECT ........................................................................................................... 52 CODES AND STANDARDS ....................................................................................... 62.1 General considerations ......................................................................................... 62.2 Fulfilment of regulations ....................................................................................... 62.3 Applicable Codes and Standards .............................................................................. 63 GENERAL CONSIDERATIONS. FIRE AREA DETERMINATION AND REQUIREMENTS .................... 93.1 Classification of Occupancy and Hazard of Contents ...................................................... 93.2 Building Construction Materials .............................................................................. 103.3 Interior Finish ................................................................................................... 103.4 Smoke Vents ..................................................................................................... 103.5 Emergency Lighting ............................................................................................ 113.6 Hazardous areas ................................................................................................ 114 CLASSIFICATION OF HAZARD OF CONTENTS IN NOOR III ............................................... 124.1 Solar field ........................................................................................................ 124.1.1 Classification of Hazard ....................................................................................... 124.2 Power Island and tower ........................................................................................ 124.2.1 Classification of Hazard ....................................................................................... 125 FIRE AREAS ...................................................................................................... 145.1 MS areas. Fire Areas ............................................................................................ 145.1.1 Racks room, electrical room and cable room .............................................................. 145.2 Tower. Fire areas ............................................................................................... 145.2.1 Stairs. Tower .................................................................................................... 145.2.2 Racks room and electrical room. Tower .................................................................... 145.3 Materials ......................................................................................................... 155.3.1 Building Construction Materials .............................................................................. 155.3.2 Opening Protectives ............................................................................................ 155.3.3 Interior Finish ................................................................................................... 165.4 Occupancy ....................................................................................................... 165.4.1 Minimum construction requirements ........................................................................ 165.5 Means of egress ................................................................................................. 175.5.1 Exits ............................................................................................................... 17




5.6 Smoke Vents ..................................................................................................... 195.7 Emergency Lighting ............................................................................................ 195.8 NOORo III. Minimun requiments summary .................................................................. 196 SCOPE OF SUPPLY ............................................................................................. 206.1 Optional supply ................................................................................................. 217 TECHNICAL REQUIREMENTS. MS AREA AND TOWER ..................................................... 227.1 General Conditions ............................................................................................. 227.2 Automatic Fire Detection System ............................................................................ 227.2.1 General description ............................................................................................ 227.3 Water supply system ........................................................................................... 267.4 Water spray system ............................................................................................ 277.4.1 Calculations TES electrical building ......................................................................... 277.5 Hose reels ........................................................................................................ 277.6 Clean gaseous suppression agents: .......................................................................... 287.7 Extinguishers .................................................................................................... 297.8 Painting .......................................................................................................... 317.9 Instrumentation and control .................................................................................. 31




1 OBJECT

The aim of this document is to define the requirements for the design, engineering and manufacturing of the Fire Protection System for solar field, Molten Salts (MS) area and Tower located in NOORo III.

This document is the basic input for Sepco III to develop their own documentation for Request for Quotation of the Fire Protection System.

The content of this document does not exempt Sepco III of the fully fulfilment of contractual documents of the project (Minimum Functional Specification by Masen, Owners Technical Specification by Acwa, Technical Offer, SESIA, etc), which will prevail over this.




2 CODES AND STANDARDS

2.1 General considerations

The Supplier shall comply with the international regulations, laws and local requirements applicable to the Purchaser during the validity period of the contract.

The Supplier shall draw the Purchaser's attention to any conflicts between the requirements of this Specification and its references. Should the requirements of this Specification conflict with the requirements of the Codes and Standards referenced herein or with the applicable International Codes, Standards and local Regulations, then the more stringent requirements shall apply. Should there be any difference of opinion with regard to interpretation of requirements, the Purchaser shall be judge of the requirements and his interpretation shall rule.

All the codes, standards, design bases and procedures, and in general the design criteria to be applied to the project and to carry out the supply, shall be approved by the Purchaser. The approval by the Purchaser shall not preclude to the Supplier from his responsibilities.

It shall not be allowed any modification to the approved technical conditions without a prior written consent by the Purchaser.

2.2 Fulfilment of regulations

All the equipment and components supplied, and all the works performed, shall comply with all regulations, laws and requirements that apply to the Owner (including any future modification to the regulations, laws and requirements during the period of the Purchase contract).

Special attention shall also be paid to:

Local and regional regulations

Workplace Safety, Health and Environmental applicable regulations

IEC, ISO and IEEE standards, when applicable

2.3 Applicable Codes and Standards

Design, installation, testing and commissioning of the fire protection system will be performed and in accordance with local directives and laws, NFPA requirements and recommendations. Particular guidance will be taken from;

NFPA 850, Recommended Practice for Fire Protection for Electrical Generating Plants and High Voltage Direct Current Converter Stations, the recommendations of which will be adopted as a minimum requirement in particular Chapter 11 Solar Thermal Power Generation.

NM 21.9.003-1997 Protection contre lincendie - Vocabulaire - Dtection et alarme incendie

NM 21.9.004-1997 Protection contre lincendie - Vocabulaire - Equipements et moyens dextinction

NM 21.9.011-1997 Protection contre lincendie - Signaux de scurit

NM 21.9.014-1997 Extincteurs mobiles - Rgle dinstallation

NM 21.9.025-1999 Installations fixes de lutte contre lincendie - Systmes quips de tuyaux - Robinets dincendie arms quips de tuyaux semi-rigides




NM 21.9.026-1999 Installations fixes de lutte contre lincendie - Systmes quips de tuyaux - Postes deau muraux quips de tuyaux plats

NM ISO 14520-9-2006 Systmes d'extinction d'incendie utilisant des agents gazeux - Proprits physiques et conception des systmes - Partie 9 : Agent extincteur HFC 227ea (IC : NM 21.9.079)

NM 21.9.180 Installations fixes de lutte contre lincendie- composants des systmes dextinction du type sprinkleur et pulverisation deau sprinklers

NM 06.1.002: Matriel pour rseaux courant alternatif haute tension coordination des isolements Rgles (NM-Oblig.)

o Equivalent to NFC 13-200.

Standards NM 21.9 applicable

NM 06.1.100 to NM 06.1.106: Installations lectrique basse tension;

o Equivalent to NFC 15-100

As a minimum, but not limited to, the Design must be based on the following codes and standards:

NFPA 10 - Standard for Portable Fire Extinguishers

NFPA 11 - Standard for Low-, Medium-, and High-Expansion Foam

NFPA 13 Standard for the installation of sprinkler systems

NFPA 14 - Standard for the Installation of Standpipe, Private Hydrant,

NFPA 15 Water spray fixed systems for fire protection

NFPA 16 - Standard for the Installation of Foam-Water Sprinkler and Foam-Water Spray Systems

NFPA 24 - Standard for the Installation of Private Fire Service Mains and Their Appurtenances

NFPA-25 Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems

NFPA 30 Flammable and combustible liquid code

NFPA 70 National electrical code

NFPA 72 National fire alarm code

NFPA 80 - Standard for Fire Doors and Fire Windows

NFPA 80A - Recommended Practice for Protection of Buildings from Exterior Fire Exposures

NFPA 101 Life safety code

NFPA 204 - Standard for smoke and heat venting

NFPA 750 - Standard on Water Mist Fire Protection Systems

NFPA 2001 - Standard on Clean Agent Fire Extinguishing Systems

EU Directive 94/9/EC (ATEX) and ATEX 137

American Welding Society (AWS)




Pressure Equipment Directive (97/23/CE)

Occupational Safety and Health Administration (OSHA)

Underwriter Laboratories Incorporated (UL)

In the event that any codes, standards or regulations conflict with one another, the most stringent requirement shall be applied.

Any other appropriate or equivalent approved standards could also be valid if accepted in written by the Purchaser.




3 GENERAL CONSIDERATIONS. FIRE AREA DETERMINATION AND REQUIREMENTS

According to NFPA 850 some areas will be subdivided into separate fire areas for the purpose of limiting the spread of fire, protecting personnel, and limiting the resultant consequential damage to the plant.

It is recommended that fire area boundaries be provided to separate the following:

Cable spreading room(s)

Control room, computer room from adjacent areas

Rooms with major concentrations of electrical equipment, such as switchgear room from adjacent areas

Battery rooms from associated battery chargers equipment, and adjacent areas

Maintenance shop(s) from adjacent areas

Main fire pump(s) from reserve fire pump(s) where these pumps provide the only source of fire protection water

Fire pumps from adjacent areas

Warehouses from adjacent areas

Emergency generators from each other and from adjacent areas

Office buildings from adjacent areas

Telecommunication rooms from adjacent areas

3.1 Classification of Occupancy and Hazard of Contents

According to NFPA 101, the occupancy of a building or structure, or portion of a building or structure, will be classified in accordance with 6.1.2 through 6.1.13.

Industrial Occupancy. An occupancy in which products are manufactured or in which processing, assembling, mixing, packaging, finishing, decorating, or repair operations are conducted, including power plants.

Business Occupancy. Occupancy used for the transaction of business other than mercantile.

Storage Occupancy. An occupancy used primarily for the storage or sheltering of goods, merchandise, products, or vehicles.

The hazard of contents of any building or structure will be classified as low, ordinary, or high in accordance with NFPA 101: 6.2.2.2, 6.2.2.3, and 6.2.2.4.

Low Hazard. Low hazard contents will be classified as those of such low combustibility that no self-propagating fire therein can occur.

Ordinary Hazard. Ordinary hazard contents will be classified as those that are likely to burn with moderate rapidity or to give off a considerable volume of smoke.

High Hazard. High hazard contents will be classified as those that are likely to burn with extreme rapidity or from which explosions are likely.




3.2 Building Construction Materials

Construction materials used in the turbine-generator buildings or other buildings critical to power generation or conversion should meet the definition of noncombustible or limited combustible, except for the following:

Roof coverings, which should be permitted in limited applications if the Fire Protection Design Basis and/or fire risk evaluation demonstrate that the material is acceptable.

Limited use of translucent reinforced plastic panels as allowed by the Fire Protection Design Basis

3.3 Interior Finish

Cellular or foamed plastic materials (as defined in Annex A of NFPA 101, Life Safety Code) should not be used as interior finish.

Interior finish in buildings critical to power generation or conversion should be Class A.

Interior finish in buildings not critical to power generation or conversion should be Class A or Class B.

Products required to be tested in accordance with NFPA 255, Standard Method of Test of Surface Burning Characteristics of Building Materials, will be classified as follows in accordance with their flame spread and smoke development.

(1) Class A interior wall and ceiling finish will be characterized by the following:

(a) Flame spread, 025

(b) Smoke development, 0450

(c) No continued propagation of fire in any element thereof when so tested

(2) Class B interior wall and ceiling finish will be characterized by the following:



(3) Class C interior wall and ceiling finish will be characterized by the following:



Wherever the use of Class C interior wall and ceiling finish is required, Class A or Class B shall be permitted. Where Class B interior wall and ceiling finish is required, Class A shall be permitted.

3.4 Smoke Vents

Smoke venting should be provided for areas identified by the Fire Protection Design Basis. Where smoke venting is provided, smoke should be vented from its place of origin in a manner that does not interfere with the operation of the plant.

Consideration should be given to smoke venting for the following areas: control room, cable spreading room(s), switchgear room, and sensitive electronic equipment rooms.

In the areas with gaseous fire extinguishing systems, the smoke ventilation system will be properly interlocked to ensure the effective operation of the gaseous fire extinguishing system.




3.5 Emergency Lighting

Emergency lighting should be provided for means of egress.

3.6 Hazardous areas

Fire protection installation in a potential explosive atmosphere must be according to regulation.

Hazardous areas shall be provided with firefighting equipment and adequate automatic fire detection and alarm systems (ATEX approved).




4 CLASSIFICATION OF HAZARD OF CONTENTS IN NOOR III

In NOORo III MS area and solar field area, the following fire areas are considered:

1 Zone 1: Solar field

2 Zone 2: Power Island

SALT area

Heat exchanger system

TES electrical building

Hot and cold storage tanks

Tower

4.1 Solar field

4.1.1 Classification of Hazard

Combustibility Self-propagating Volume of

smoke Explosions Hazard

Solar field Low No Low No Low

4.2 Power Island and tower

4.2.1 Classification of Hazard



Heat exchanger system Low No Low No Low

Hot and cold storage tank Low No Low No Low

TES electrical building. Racks room Low No Low No Low






TES electrical building. Electrical room Low No Low No Low

TES electrical building. Cable room Low No Low No Low

Tower. Electrical room Low No Low No Low

Tower. Racks room Low No Low No Low

Tower. Stairs Low No Low No Low




5 FIRE AREAS

5.1 MS areas. Fire Areas

Considering types, quantity, density, location and configuration of plant equipment, consequence of losing plant equipment and location of fire detection and suppression systems, fire area boundaries will be provided to separate the following:

Racks rooms.

Electrical rooms

Cable Room

5.1.1 Racks room, electrical room and cable room

According to NFPA 850, if adequate spatial separation is not provided, fire areas will be separated from each other by fire barriers, or other approved means. Fire barriers separating fire areas will be a minimum of 2-hour fire resistance rating.

Fire door assemblies, fire dampers, and fire shutters used in 2-hourrated fire barriers will be listed and approved for a minimum 1 12 hour fire rating. (See NFPA 80, Standard for Fire Doors and Other Opening Protectives).

5.2 Tower. Fire areas

Fire area boundaries will be provided to separate the following:

Racks room.

Electrical room

Stairs. Tower

5.2.1 Stairs. Tower

According to NFPA 101 Stairs used as a component in the means of egress shall conform to the general requirements of exits: an exit shall be separated from other parts of the building.

The separation shall have a minimum 2-hour fire resistance rating where the exit connects four or more stories.

5.2.2 Racks room and electrical room. Tower

According to NFPA 850, if adequate spatial separation is not provided, fire areas will be separated from each other by fire barriers, or other approved means. Fire barriers separating fire areas will be a minimum of 2-hour fire resistance rating.

Fire door assemblies, fire dampers, and fire shutters used in 2-hourrated fire barriers will be listed and approved for a minimum 1 12 hour fire rating. (See NFPA 80, Standard for Fire Doors and Other Opening Protectives).




5.3 Materials

5.3.1 Building Construction Materials

Construction materials used will meet the definition of noncombustible or limited combustible.

5.3.2 Opening Protectives

Every opening in a fire barrier will be protected to limit the spread of fire and restrict the movement of smoke from one side of the fire barrier to the other.

The fire protection rating for opening protectives in fire barriers, firerated smoke barriers, and fire-rated smoke partitions will be in accordance with Table 8.3.4.2.




Openings for Air-Handling Ductwork in fire barriers for air-handling ductwork or air movement will be protected.

5.3.3 Interior Finish

Interior wall or ceiling finish that is required to be Class A, Class B, or Class C will be classified based on test results from NFPA 255, Standard Method of Test of Surface Burning Characteristics of Building Materials as defined in 3.3.

Interior finish in the TES electrical building and Tower will be Class A.

5.4 Occupancy

According NFPA 850, structures will be classified as follows:

TES electrical building will be considered as special purpose industrial occupancies

Tower will be considered as special purpose industrial occupancies

5.4.1 Minimum construction requirements

According to NFPA 101, 38.1.6, 40.1.6 and 42.1.6, minimum construction requirements are not required for industrial occupancies.




5.5 Means of egress

5.5.1 Exits

The separation will have not less than a 1-hour fire resistance rating where the exit connects three stories or less. This separation, other than an existing separation, will be supported by construction having not less than a 1-hour fire resistance rating.

Openings in the separation will be protected by fire door assemblies equipped with door closers equipped with self-closing devices (A door normally required to be kept closed will not be secured in the open position at any time and will be self-closing or automatic-closing).

All inside stairs serving as an exit or exit component will be enclosed in accordance with the resistance detailed above.

Exits will be located and exit access will be arranged so that exits are readily accessible at all times.

Where two exits or exit access doors are required, they will be located at a distance from one another not less than one-half the length of the maximum overall diagonal dimension of the building or area to be served, measured in a straight line between the nearest edge of the exit doors or exit access doors, unless:

In buildings protected throughout by an approved, supervised automatic sprinkler system, the minimum separation distance between two exits or exit access doors will be not less than one-third the length of the maximum overall diagonal dimension of the building or area to be served

Industrial occupancy. TES electrical Building.

The number of means of egress from any balcony, mezzanine, story, or portion thereof will be not less than two and not less than one exit will be reached without traversing another story.

A single means of egress will be permitted from any story or section in low and ordinary hazard industrial occupancies, provided that the exit can be reached within the distance permitted as a common path of travel.

Means of egress will not exceed that provided by the next table:




Industrial occupancy. Tower.

Tower shall be permitted to be served by fire escape ladders. They are considered a means of egress from platforms around machinery or equipment if occupancy does not exceed three persons.

Fire escape ladders shall comply with ANSI A14.3, Safety Requirements for Fixed Ladders, unless one of the following criteria is met:

(1) Approved existing ladders complying with the edition of this Code that was in effect when the ladders were installed shall be permitted.

(2) Industrial stairs complying with the minimum requirements for fixed stairs of ANSI/ASSE A1264.1, Safety Requirements for Workplace Floor and Wall Openings, Stairs and Railing Systems, shall be permitted where fire escape ladders are permitted in accordance with Chapter 40.

Ladders shall be installed with a pitch that exceeds 75 degrees. The lowest rung of any ladder shall not be more than 12 in. (305 mm) above the level of the surface beneath it.

Capacity: Stairs are considered means of egress not subject to human occupancy because of machinery or equipment and shall be excluded from capacity consideration.

Towers shall be permitted to have a single exit as means of egress.

Tower shall be exempt from travel distance limitations.

Although tower is exempt from illumination of means of egress an emergency lighting system will be provided.




Mechanical Equipment Rooms, Boiler Rooms, and Furnace Rooms

Mechanical equipment rooms, boiler rooms, furnace rooms, and similar spaces will be arranged to limit common path of travel to a distance not exceeding 15 m, unless otherwise permitted by the following:

(1) A common path of travel not exceeding 30 m will be permitted in the following locations:

(a) In buildings protected throughout by an approved, supervised automatic sprinkler system

(b) In mechanical equipment rooms with no fuel-fired equipment

5.6 Smoke Vents

Smoke exhaust fans will not be considered in MS area.

5.7 Emergency Lighting

Emergency lighting will be provided for means of egress.

5.8 NOORo III. Minimun requiments summary

Fire areas

Fire barriers.

Fire rating

Fire doors, dampers Fire rating

Interior finish Occupancy

TOW

ER

Electrical room 2 h 1 h Class A Special purpose industrial occupancies

Racks Room 2 h 1 h Class A Special purpose industrial occupancies

Stairs 2 h 1 h Class A Special purpose industrial occupancies

TES

ELEC

TRIC

AL

BUIL

DIN

G Cable room

2 h 1 h Class A Special purpose industrial occupancies

Racks room 2 h 1 h Class A Special purpose industrial occupancies

Electrical room 2 h 1 h Class A Special purpose industrial occupancies




6 SCOPE OF SUPPLY

MS areas shall be protected against fire by a comprehensive fire detection, alarm and protection system. The fire detection system shall provide the means to detect fires, provide visual and audible alarms both locally and remotely, and, where required, actuate the fire protection system.

- External areas:

Solar field. No special fire protection system will be provided.

Molten salt storage tanks and Salt heat exchanger area

- Buildings

TES electrical building

Tower

All supplies included shall include CE certificates or UL/FM marking.

The fire and explosion prevention equipment shall be designed, installed and tested according to European and local regulations as well as the requirements from the local fire protection authority and FM requirements.

See drawings:

OUA3-SRME-PM-0011 FIRE PROTECTION SYSTEM HYDRANTS LAYOUT.

OUA3-SRME-DI-0117 FIRE FIGHTING SYSTEM DIAGRAM

Molten Salts area and tower shall be protected against fire by the following systems:

- Alarm and detection system provided in the network node and controlled by the fire alarm control panel located in the main electrical building:

Fire detectors

Manual Pull Stations

Acoustic alarm system

Control, monitoring and isolation modules

Connection with HVAC control panel from fire alarm control panel.

- Power Island: Yard hydrant and valves.

Dry type Fire Hydrant

- Hydrant cabinets.

- Hose station. One close to the cable room entrance (TES electrical building)

- Fixed water systems, including:

Water spray system in the cable room (TES electrical building).

- Portable and mobile fire extinguishers;




- Clean gaseous suppression agents (HFC-227) in:

Rack rooms (TES electrical building and Tower)

- Firefighting photo luminescent signalling (hydrants, extinguishers, hose reels, Manual Pull Stations, evacuation routes).

- Bolts, anchor bolts,

- Operator and personnel training courses in French or English.

- Electrical installation and cabling, according to OUA3-SREL-SP-0003 Electrical Requirements for Package Units.

To prevent spread of fire through openings, fire cable openings shall be permanently sealed according to general requirements in the plant. Where cables are installed in cable trays provided by others, the seal of the openings will not be included in the scope of Fire protection provider.

6.1 Optional supply

Spare parts for three (3) years operation.

Total flooding clean agent INERGEN in the Racks rooms instead of HCF 227 (TES electrical building and Tower).




7 TECHNICAL REQUIREMENTS. MS AREA AND TOWER

7.1 General Conditions

The Fire Fighting System shall be designed, constructed and tested in accordance with NFPA standards, and Government Authority. The recommendations of NFPA shall be adopted as minimum requirements.

7.2 Automatic Fire Detection System

7.2.1 General description

Fire detection shall be installed in all buildings in accordance with NFPA 72 National Fire Alarm Code.

Fire detection system will consist of detection elements appropriate to the area, Manual Pull Stations in all buildings and outdoor areas and warning horns audible in any indoor or outdoor point of the power island.

Hydrogen detection will be provided in battery rooms (included in scope of Fire protection system).

The detection system will consist of:

Centralized control panel Installation of detectors and monitor modules Installation of manual pull stations Installation of warning horns Connexion of the fire detection system Software graph management for fire detection systems, PC and monitor

Fire alarm control panel

The Fire alarm control panels will be Notifier or equivalent.

The control panel, intelligent and addressable must display fire alarm, system trouble, element failure, and communicate with other systems (HVAC).

In case of fire detection, all optical and audible alarm signals will be activated, and the display will indicate the zone where the fire is located.

The Fire alarm control panel must integrate the alarm signal from hydrogen detectors. Also alarm control panel will integrate the compressor system failure alarm from the preaction sprinklers.

The system will be provided with auxiliary power supply, batteries and battery charger.

The control panel will indicate which power supply is working. In case of any trouble it will emit an acoustical and optical alarm.

The fire alarm control panel in the power island will be equipped with free potential signals, in order to send alarms and states to the DCS.

Signals to the DCS. The wiring from the fire alarm control panel is not included in the scope of Fire protection system. Fire protection supplier must include Input/ output terminal blocks in the fire alarm control panel.




o Fire alarm

o Failure alarm

Signals to the ventilation and air conditioning system. The wiring will be included in the scope of the fire protection system:

o Fire detection signal to switch off ventilation and air conditioning equipment. (One signal to each HVAC control panel).

o H2 detection signal in battery room. (One signal to the HVAC control panel in the Main electrical building).

o Fire detection signal where a gas suppression system is installed in order to close duct ventilation dampers. (One signal to the HVAC control panel in the Main electrical building).

Fire signal to the turbine hall ventilation system, in order to switch off the fans. Certified for seismic applications with the appropriate seismic mounting kit. Up to 159 detectors (any mix of optical, thermal, or multi-sensor) and 159 modules (Addressable

pull stations, normally open contact devices, two-wire smoke, notification, or relay).

Display. Power supply and Notification Appliance Circuits (NAC). Selectable System Sensor. Built-in Alarm, Trouble, Security, and Supervisory relays. History file in non-volatile memory, plus separate alarm-only file. Alarm Verification selection per point, with tally. Presignal/Positive Alarm Sequence (PAS). Silence inhibit and Auto Silence timer options. Field-programmable on panel or on PC. Full QWERTY keypad. Battery charger supports and batteries. Remote Signal Silence/System Reset/Drill via monitor modules.

Fire detectors

Total coverage is required. Total coverage shall include all rooms, storage areas, spaces

Fire detectors installation will be in accordance with NM 21.9.305/ 309/ 310/ 311/ 313.

The term automatic fire detection covers smoke, heat detection. The type of detection chosen in any particular circumstance will depend on the conditions (see P&ID).




Where inaccessible areas contain combustible material, they shall be made accessible and shall be protected by detectors.

Smoke sensing fire detectors will be installed in the following areas:

TES electrical building: electrical room, VDFs room and racks room.

Tower:

o General area

o Electrical room, racks room and HVAC room

Heat sensing fire detector will be installed in:

Dry transformers

TES electrical building: Cable room

FENWAL type detectors

UV/IR Flame detector

Hydrogen detectors

Manual Pull Stations

Manual fire alarm boxes shall be located throughout the protected areas so that they are conspicuous, unobstructed, and accessible.

Manual fire alarm boxes shall be located within 1.5 m of the exit doorway opening at each exit on each floor.

To allow manual initiation of a fire alarm, manual pull stations shall be distributed throughout the plant.

Manual alarm boxes shall be installed with respect to the national and local regulations at all suitable locations such that building(s) entrances, near stairways, etc.

If necessary, the supplier shall include structure to place the manual pull stations.

Here are manual pull station protected areas as well as the estimated number; the supplier shall review the number and distribution during the detailed engineering.

TES electrical building: cable room (4 units, external approved), electrical room (3 units), VDFs room (3 units), and racks room (2 units).

Tower

o General area (level 0 and one per platform)

o Electrical room (2 units) and racks room (2 units)

External areas in Salt storage tanks




Remote Warning Horns

Fire detection warning horns shall be stationed in locations throughout the entire plant. The warning horns shall be audible from any location within the plant site and shall continue to sound until silenced at the central control panel.

Here are remote warning horn protected areas as well as the estimated number; the supplier shall review the number and distribution during the detailed engineering.

TES electrical building: cable room (2 units, external approved), electrical room (1 unit) and VDFs room (1 unit).

Tower

o General area (level 0 and platforms +168.5 and 200.0) (8 units)

o Electrical room and racks room (1 unit)

External areas in salt system areas

Signalling

Signalling providing guidelines for emergency evacuation, signalling elements and extinguishing systems will be provided.

Signalling will be in accordance with NM 21.9.011-1997 Protection contre lincendie - Signaux de scurit.

Electricity

All wire and cable shall be listed and/or approved by a recognized testing agency for use with a protective signalling system.

Cables installation may be performed on existing trays, previously authorized by the Purchaser. Where routing is not possible on trays, metal conduit (DIN 2440 type) will be used. Wire and cable not installed in conduit shall have a fire resistance rating suitable for the installation as indicated in NFPA 70.

Field wiring shall be electrically supervised for open circuit and ground fault. Any failure or interruption in any circuit must be indicated on the panel.




Potential explosive atmospheres

Battery rooms are not considered explosive areas, but fire protection system will be in accordance with explosive areas requirements.

7.3 Water supply system

The water supply for the permanent fire protection installation should be based on providing a 2-hour supply.

The service water tank will be sized to contain the fire water storage. The tank connections will be arranged to ensure that the firefighting volume is available at any time.

The maximum pressure at any point in the system at any time shall not exceed 350 psi (24.1 bar).

A yard hydrant system consisting of underground ring and strategically placed dry barrel hydrant connections shall be provided in the power island. Dry hydrants with hose cabinets shall be installed along the yard loop.

The solar field will not include hydrants.

External hydrant spacing in the plant areas shall be a maximum of 91.4 m.

External hydrant shall be located not less than 12.2 m from the buildings or areas to be protected.

Hose connections shall have external national hose standard.

Hydrants shall be of approved type and have not less than a 150 mm diameter connection with the mains.

Each hydrant should be equipped with a separate shutoff valve located on the branch connection to the supply main.

Hose houses will be provided in the power island. Hose houses shall be located over, or immediately adjacent to the hydrant. One hose house shall be provided for each hydrant.

Hose houses shall be of substantial construction on foundations. The exterior shall be painted or otherwise protected against deterioration.

Hose houses shall be equipped with the following:

Two approved adjustable spraysolid stream nozzles equipped with shutoffs for each size of hose provided

One hydrant wrench (in addition to wrench on hydrant)

Four coupling spanners for each size hose provided

Two hose coupling gaskets for each size hose

Where two sizes of hose and nozzles are provided, reducers or gated wyes shall be included in the hose house equipment.

Hydrants and valves shall be protected against mechanical damage where needed (protection not included in the scope of this supply).

For detailed information about hydrants and underground valves, see drawing OUA3-SRME-PM-0011 FIRE PROTECTION SYSTEM HYDRANTS LAYOUT.




7.4 Water spray system

Sprinkler systems and manual hose station standpipes shall have connections to the plant underground water main.

The scope of supply includes the design and hydraulic calculations for all necessary components of the systems.

Standard sprinklers are used, but they are all open. When the control valve is opened water will flow from all of the sprinklers simultaneously and deluge the area with water.

Sprinklers will be attached to a dry piping systems containing air.

The deluge valve is normally closed. The valve is opened by the activation of a separate fire detection system.

All water sprinkler systems will be equipped with a manual by pass in order to assure a water discharge in case of any trouble. All systems shall have provisions for manual actuation.

Water spray dry pipe sprinkler system will be installed in:

cable room (TES electrical building)

7.4.1 Calculations TES electrical building

Standard considered: NFPA 15 and NFPA 850

Density: 6.1 l/min m2 over the floor area

Total surface: 35 x 12 = 420 m2

Flow required: 2565 l/min

7.5 Hose reels

The system shall be designed according to NFPA 14 and NM 21.9.025-1999; 21.9.026-1999.

Hose stations will be provided in:

One hose station close to TES electrical building entrance (cable room)

The system assembly shall consist of a rubber hose, hose reel drums, stop valve, reel, and shut-off nozzle. The assembly shall be permanently connected to the water supply and so designed as to facilitate the swift withdrawal of the hose in any direction, with the reel axis horizontal.

Connections to water supply will be provided with an approved indicating-type valve and check valve located close to the supply. Valves will be provided to allow isolation of a standpipe without interrupting the supply to other standpipes from the same source of supply.

Hose connections and hose stations shall be unobstructed and shall be located not less than 0.9 m or more than 1.5 m above the floor.

Water flow alarms shall be provided. Water flow alarms shall utilize a sensing mechanism appropriate to the type of standpipe.




Where there is a risk of flammable liquids (oil field steam turbine), hose reels will have the possibility of foam discharge.

7.6 Clean gaseous suppression agents:

Total flooding clean agent fire HFC 227 (other agents such as INERGEN could be provided, optional supply) will be provided in the Racks rooms (TES electrical building and Tower).

The fire extinguishing agents shall be electrically no conducting and leave no residue upon evaporation.

The amount of agent in the system primary agent supply shall be at least sufficient for the largest single hazard protected or group of hazards to be protected simultaneously.

Agent shall be stored in containers designed to hold that specific agent at ambient temperatures. Containers shall be charged to a fill density or superpressurization level within the range specified in the manufacturers listed manual.

Discharge nozzles shall be listed for the intended use. Listing criteria shall include flow characteristics, area coverage, height limits, and minimum pressures. Discharge orifices and discharge orifice plates and inserts shall be of a material that is corrosion resistant to the agent used and the atmosphere in the intended application.

Discharge nozzles shall be permanently marked to identify the manufacturer as well as the type and size of the orifice.

Automatic detection and automatic actuation shall be used.

Adequate and reliable primary and 24-hour minimum standby sources of energy shall be used to provide for operation of the detection, signalling, control, and actuation requirements of the system.

Operating devices shall include agent releasing devices or valves, discharge controls, and shutdown equipment necessary for successful performance of the system.

All devices shall be located, installed, or suitably protected so that they are not subject to mechanical, chemical, or other damage that would render them inoperative.

A means of manual release of the system shall be provided. Manual release shall be accomplished by a mechanical manual release or by an electrical manual release when the control equipment monitors the battery voltage level of the standby battery supply and will provide a low battery signal. The release shall cause simultaneous operation of automatically operated valves controlling agent release and distribution.

The normal manual control(s) for actuation shall be located for easy accessibility at all times, including at the time of a fire. The manual control(s) shall be of distinct appearance and clearly recognizable for the purpose intended. Operation of any control shall cause the complete system to operate in its normal fashion.

Manual controls shall not require a pull of more than 40 lb (178 N) nor a movement of more than 14 in. (356 mm) to secure operation. At least one manual control for activation shall be located not more than 4 ft (1.2 m) above the floor.

Alarms or indicators or both shall be used to indicate the operation of the system, hazards to personnel, or failure of any supervised device. The type (audible and visual), number, and location of the devices shall be such that their purpose is satisfactorily accomplished.

Audible and visual pre-discharge alarms shall be provided within the protected area to give positive warning of impending discharge. The operation of the warning devices shall be continued after agent discharge until positive action has been taken to acknowledge the alarm and proceed with appropriate action.




Abort switches shall be located within the protected area and shall be located near the means of egress for the area.

The abort switch shall not be of a type that would allow the system to be left in an aborted mode without someone present. Operation of the abort function shall result in both audible and distinct visual indication of system impairment. The abort switch shall be clearly recognizable for the purpose intended.

For clean agent extinguishing systems, a pre-discharge alarm and time delay, sufficient to allow personnel evacuation prior to discharge, shall be provided.

To prevent loss of agent through openings to adjacent hazards or work areas, openings shall be permanently sealed or equipped with automatic closures.

Forced-air ventilating systems shall be shut down or closed automatically where their continued operation would adversely affect the performance of the fire extinguishing system or result in propagation of the fire. Fire detection signal will be provided to the HVAC control panel (included in the scope of supply of the fire protection system).

The type of nozzles selected, their number, and their placement shall be such that the design concentration will be established in all parts of the hazard enclosure and such that the discharge will not unduly splash flammable liquids or create dust clouds that could extend the fire, create an explosion, or otherwise adversely affect the contents or integrity of the enclosure.

The detectors shall be installed in a professional manner and in accordance with technical data regarding their installation.

Manual pull stations shall be properly installed, readily accessible, accurately identified, and properly protected to prevent damage

7.7 Extinguishers

Portable and mobile (wheel-mounted) chemical and carbon dioxide, fire extinguishers shall be provided at suitable locations throughout the Power Plant to be used during early stages of a fire to prevent spreading.

Portable extinguishers will be provided in TES electrical building, MS external areas and tower, according to Fire fighting system diagram.

Wheeled fire extinguishers shall be considered for hazard protection in areas in which a fire risk assessment has shown the following:

High hazard flow rate

Limited available personnel are present, thereby requiring an extinguisher that has the following features:

o High agent flow rate

o Increased agent stream range

o Increased agent capacity

The installation of extinguishers shall be independent of whether the building is equipped with automatic sprinklers standpipe and hose, or other fixed protection equipment.

Fire extinguishers shall be conspicuously located where they are readily accessible and immediately available in the event of fire.




Fire extinguishers shall be located along normal paths of travel, including exits from areas.

Fire extinguishers shall not be obstructed or obscured from view.

In large rooms and in certain locations where visual obstructions cannot be completely avoided, means shall be provided to indicate the extinguisher location.

Cabinets housing fire extinguishers are not necessary, in case of installing, they shall not be locked.

Tags or labels intended for recording inspections, maintenance, or recharging shall be affixed so as not to obstruct the fire extinguisher suitable for the type of hazard being protected and shall be of at least equal rating.

Labels indicating fire extinguisher use or classification, or both, shall be placed on the front of the fire extinguisher.

Carbon dioxide (CO2) fire extinguishers. The principal advantage of CO2 fire extinguishers is that the agent does not leave a residue after use. This can be a significant factor where protection is needed for delicate and costly electronic equipment.

Dry chemical extinguishers. Dry chemical fire extinguishers stored-pressure type (rechargeable) is the best suited. Multipurpose agent suitable for Class A, B and C protection will be installed.

Here are fire extinguishers protected areas as well as the estimated number; the supplier shall review the number and distribution during the detailed engineering.

ABC Dry chemical fire extinguisher, 6 kg, 21A-113B will be provided in:

TES electrical building: cable room (7 units), electrical room (3 units), VDFs room (4 units), racks room (1 units).

Tower:

o One per platform

o Electrical room (2 units), racks room (2 units) and HVAC room (1 unit)

o Stairs: one per door access

Salt tanks

o Salt heat exchanger (8 units)

Wheeled ABC Dry chemical fire extinguisher, 25 kg, 34A will be provided in:

Salt outdoor areas (2units)




CO2 fire extinguisher, 5Kg, 89B-will be provided in:

TES electrical building: cable room (9 units), electrical room (5 units), racks room (1 unit), VDFs room (6 units) and transformers (5 units).

Tower:

o One per platform

o Electrical room (3 units), racks room (2 units) and HVAC room (1 unit)

o Stairs: one per door access

Salt tanks

o Salt heat exchanger (8 units)

Wheeled CO2 fire extinguisher, 20 Kg, will be provided in:

TES electrical building: Electrical room (2 units), VDFs room (1 unit), racks room (1 unit) and transformers (2 units).

Portable extinguishers will be provided in all buildings and external areas, according with OUA-SRME-DI-0117.

7.8 Painting

All metal parts, pipes, brackets, fittings, tanks, that are not adequately protected against corrosion will be protected by painting.

Painting will be according with painting technical specification (OUA3-SRME-SP-1000).

Galvanized pipe will not be painted.

7.9 Instrumentation and control

Signals to the ventilation and air conditioning system.

Fire detection signal to switch off ventilation and air conditioning equipment in case of fire. (One signal to each HVAC control panel: TES electrical building and Tower).

Fire detection signal where a gas suppression system is installed in order to close duct ventilation dampers. (One signal to the HVAC control panel in the TES electrical building).

Cabling to the Ventilation and Air Conditioning panels will be included in the fire protection system scope of supply.

Documents

OUA3-SRME-NT-0005 Rev. 1 FIRE PROTECTION DESIGN. TECHNICAL INFORMATION F....pdf