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Comprehensive Study on BIS 3034 & NFPA 850 Standards code For Electrical & Oil installation Nalin C1Details of High Fire & Explosion Risk AreaFollowing area having high fire & explosion risk area.TransformersTurbo GeneratorsLube Oil System & StorageCable GalleriesSwitch gear room, Control Room, Computer Room & Communication RoomsTurbine Driven Feed PumpsBattery RoomsElectrical Cables & Cable TrayCoal Belt conveyorHSD TankFire Hydrant Valves12. Emergency Power13. Fire illumination Plant

2Nalin C1. TransformersIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFIRE SAFETY OF INDUSTRIAL BUILDINGS:ELECTRICAL GENERATING AND DISTRIBUTING STATIONSRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations8.8 Transformers - 8.8.1 - No fixed fire protection equipment (such as high velocity spray) is required on transformers below 10 MVA or in the case of oil filled transformers with oil capacity of 2 000 litres and below. For all other transformers high velocity water spray system shall be provided. This system shall be separately mounted and designed to take into account the possibility of a transformer explosion. 8.8.3 Fire barriers walls shall be provided between transformers where they are less than 15 m apart or where the oil capacity exceeds 2 000 litres.7.8.6* Transformers. Oil-filled main, station service, and start-up transformers not meeting separation or fire barrier recommendations in 5.2.4 or as determined by the fire risk evaluation should be protected with automatic water spray or foam-water spray systems. 7.8.7* Spatial separation of transformers and other equipment containing over 500 gal (1890 L) of oil should be in accordance with 5.2.4. Consideration should be given to water spray protection of transformers critical to the transmission of the generated power.3Nalin C1. Transformers - HVWS System

TransformerDeluge ValveSpray Nozzle

Detection Bulb4Nalin CIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings: Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations8.5 - Turbo-Generators and Supporting Structures: 8.5.1 - The fixed water spray type protection system shall be used for controlling a fire involving large quantities of lubricating oil on turbine generators. 8.5.2 - The heat detectors shall be Provided at strategic points and arranged to give early warning of any unusual high temperature conditions in the area.7.7.4.1 Turbine-Generator Area - 7.7.4.1.1* All areas beneath the turbine-generator operating floor that are subject to oil flow, oil spray, or oil accumulation should be protected by an automatic sprinkler or foam-water sprinkler system. This coverage normally includes all areas beneath the operating floor in the turbine building2. Turbo Generator Area HVWS System5Nalin C

2. Turbo Generator CO2 Gas Flooding System6Nalin C3. Lube Oil System & StorageIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations5.2.6 A bund wall shall surround and contain the main lubricating oil, jacking and flushing oil package unit are, to prevent spread of oil to Surrounding floor areas. 5.3.3 All oil tanks shall be fitted with a vent pipe leading into open air, the open end being covered with a standard flame arrester conforming to IS 11006: 1984. 5.3.5.1 The oil tanks should also be protected by 38 mm fixed water monitors at vantage points so as to provide water for cooling of the tanks.7.3.9.1 Indoor fuel oil pumping or heating facilities or both should be protected with automatic sprinklers, water spray, water mist system, foam-water sprinklers, or gaseous total flooding system(s). 7.7.4.1.3* Lubricating oil reservoirs and handling equipment should be protected in accordance with 7.7.4.1.1. (Turbo generator area). Should be protected by an automatic sprinkler or foam-water sprinkler system.7Nalin C4. Cable GalleriesIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations8.11.3 - The cable galleries or runsShall be provided with automatic fixed firefighting installations using water, CO2 Clean Agents or Water Mist or high expansion foam. However, water spray sprinkler system is generally preferred. The design of sprinklers and projectors shall ensure that no rack or cable is left unprotected.7.8.2.1 Cable spreading rooms and cable tunnels should be protected with automatic sprinkler, water spray, or automatic gaseous extinguishing systems.8Nalin C

4. Cable Galleries At Power plantCable gallery FireMVW Spray Nozzle9Nalin C5. Switch gear room, Control Room, Computer Room & Communication RoomsIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations8.9 Switch Gear- 8.9.2 For an enclosed switch gear room automatic Clean Agents or CO2 total flooding Extinguishing system is considered preferable to water spray. 8.10.6 CO2 or Clean Agents extinguishing system shall be provided for control room. 8.10.3 The room shall be kept clear and free of any waste material whenever glass panels are provided, it shall be of clear fire resisting glass having minimum 45 minutes fire resistance or fitted with automatic resistant shutters/automatic water curtain.7.8.1.1 Control, computer, or telecommunication rooms should meet the applicable requirements of NFPA 75, Standard for the Protection of Information Technology Equipment. 7.8.1.2 A smoke detection system should be installed throughout these rooms 7.8.1.3 Total flooding gaseous fire extinguishing systems should be considered for areas beneath raised floors that contain cables or for areas or enclosures containing equipment that is of high value or is critical to power generation. Individual equipment and cabinet protection could be considered in lieu of total flooding systems.10Nalin C

5. Switch gear room, Control Room, Computer Room & Communication Rooms Inergen Gas Flooding System

11Nalin C6. Turbine Driven Feed PumpsIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations8.6.1 The fixed high velocity water spray system shall cover completely all the systems, oil pipe to the pumps, coolers and other similar associated equipment including adjacent floor areas, as for the main turbine. No details mentioned in NFPA12Nalin C7. Battery RoomsIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations6.4.13 Suitable exhaust fans shall be provided for the removal of gas from the battery rooms. Battery rooms shall be provided with ventilation to limit the concentration of hydrogen to one percent by volume.7.8.5 Battery rooms should be provided with ventilation to limit the concentration of hydrogen to 1 percent by Volume. For further information refer to ANSI/IEEE 484, Recommended Practice for Storage Batteries for Electricals.13Nalin C8. Electrical Cables & Cable TrayIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations6.2.1 The fire protection requirement for cable galleries, cable runs, etc shall conform to the provisions contained in IS 12459 : 1988, including the fire protection requirements such assegregation of cable runs into compartments, use of fire resistant cables in critical areas and groups of cables, sealing of penetrations in thewalls and floors by use of fire stops, firedetection and alarm systems, and theExtinguishing systems.7.8.3.1 Consideration should be given to the use of fire retardant cable insulation such as those passing the flame propagation test of the Institute of Electrical and Electronics Engineers (IEEE-383). 7.8.3.2 Cable trays subject to accumulation of coal dust and the spread of an oil spill should be covered by sheet metal. Where potential oil leakage is a problem, solid-bottom trays Should be avoided. Changes in elevation can prevent oil travel along cables in a tray.14Nalin C9. Coal Belt conveyorIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations5.1.2 The conveyor belt shall preferably be of fire resistant material conforming to IS 3181:1978. The openings in the walls and floors through which the conveyor belt system passes shall be adequately protected with properly designed water spray nozzles capable of providing the necessary particle size and pressure, to cover top and bottom sides of the conveyors near the openings.7.4.6.1 Automatic sprinkler or water spray systems should be provided for coal handling structures that are critical to power generation and subject to accumulations of coal or coal dust.15Nalin C10 HSD Tanks Class BOISD 116 (2amdOct10)NFPA 30 - 2003 EditionISFire protection facilities for petroleum refineries & oil/gas processing plantsFlammable and Combustible Liquids Code (4.1.1 This is apply to the storage of flammable and combustible liquids in portable tanks and bulk containers whose capacity exceeds 3000 L (793 gal) )NOT

FOUND

4.2.5 Water Spray System in Process Unit

- Un-insulated vessels having capacity larger than 50 m3 and containing class A or B flammable liquid. - Vessels inaccessible to fire tender/ mobile equipment, fire hydrants

4.5.5 Fire Control. A fire-extinguishing system in accordance with an applicable NFPA standard shall be provided or shall be available for vertical atmospheric fixed-roof storage tanks larger than 190 m3 (50,000 gal or 1190 bbl) capacity, storing Class I liquids, if located in a congested area where there is an unusual exposure hazard to the tank from adjacent property or to adjacent property from the tank. Fixed-roof tanks storing Class II or III liquids at temperatures below their flash points and floating roof tanks storing any liquid generally shall not require protection when installed in compliance with Section 4.3. Table 4.3.2.1.4 Unstable Liquids - Type of Tank - Horizontal and vertical tanks with emergency relief venting to permit pressure not in excess of a gauge pressure of 17 kPa (2.5 psig). Protection - Tank protected with any one of the following: approved water spray, approved inerting, approved insulation and refrigeration, approved barricade16Nalin C10. HSD Tanks

17Nalin C11. Fire Hydrant ValvesIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations8.16.1.5 The interior fire protectionmains/risers shall be considered as an Extension of the yard main and shall be provided with at least 2 valve connections with sectional control valves. No details mentioned in NFPA

Double valveconnection

Single valveconnection18Nalin C12. Emergency PowerIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations8.19 Emergency lamps with adequate illumination shall be provided at strategic locations which shall automatically operate on the failure of the mains supply. No details mentioned in NFPA19Nalin C13. ILLUMINATIONIS 3034 : 1993 - BIS @ 2006NFPA 850 - 2005 EditionFire safety of industrial buildings:Electrical generating and distributing stationsRecommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations7 - 7.1 For effective fire fighting purposes, the minimum illumination required for all working places, such as turbine houses etc is 100 lux, and for control rooms is 150 lux.No details mentioned in NFPA20Nalin CThank You21Nalin C