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    • व्यापक पिरचालन मसौदाहमारा संदभर् : सीईडी 22:4/टी – 11 16 06 2011तकनीकी सिमित : अिग्न शमन िवषय सिमित, सीईडी 22------------------------------------------------------------------------------------ूाप्तकतार् :1 िसिवल इं जीिनयरी िवभाग पिरषद् क रूिच रखने वाले सदःय े2 सीईडी 22 एवं सीईडी 22:4 क सभी सदःय े3 रूिच रखने वाले अन्य िनकायमहोदय (यों), िनम्निलिखत मसौदा संलग्न है : ूलेख संख्या शीषर्क सीईडी 22 (7808) बाहरी हाईसे न्ट िसःटम - ूावधान तथा रख-रखाव – रीित संिहता आई सी एस संख्या 13.220 कृ पया इस मसौदे का अवलोकन करें और अपनी सम्मितयाँ यह बताते हए भेजे िक यिद यह मसौदा ुूकािशत हो तो इस पर अमल करने में आपको व्यवसाय अथवा कारोबार में क्या किठनाइयॉं आ सकती हैं । सम्मितयॉं भेजने की अंितम ितिथ 31 07 2011 सम्मित यिद कोई हो तो कृ पया अधोहःताक्षरी को उपरिलिखत पते पर संलग्न फोमेर्ट में भेजें । यिद कोई सम्मित ूाप्त नहीं होती है अथवा सम्मित में कवल भाषा संबंधी ऽुिट हई े ु तो उपरोक्त ूलेखको यथावत अंितम रूप दे िदया जाएगा । यिद सम्मित तकनीकी प्रकृ ित की हई ु तो िवषय सिमित क अध्यक्ष क े ेपरामशर् से अथवा उनकी इच्छा पर आगे की कायर्वाही क िलए िवषय सिमित को भेजे जाने क बाद ूलेख को े ेअंितम रूप दे िदया जाएगा । यह ूलेख भारतीय मानक ब्यूरो की वैबसाइट www.bis.org.in पर भी उपलब्ध है धन्यवाद । भवदीय (ए. क. सैनी) े वैज्ञािनक `एफ’ एवं ूमुख (िसिवल इं जीिनयरी)संलग्न : उपरिलिखत ईमेल : ced@bis.org.in
    • DRAFT IN WIDE CIRCULATION DOCUMENT DESPATCH ADVICE Reference Date CED 22:4/T- 11 16 06 2011TECHNICAL COMMITTEE: FIRE FIGHTING SECTIONAL COMMITTEE, CED 22ADDRESSED TO : 1 Interested Members of Civil Engineering Division Council, CEDC 2. All members of CED 22 & CED 22:4 3. All others interestedDear Sir, Please find enclosed the following draft : Doc No. Title CED 22(7808) External Hydrant Systems – Provision and Maintenance – Code of Practice (First revision) ICS No. 13,220 Kindly examine the draft and forward your views stating any difficulties which you arelikely to experience in your business or profession, if this is finally adopted as NationalStandard. Last Date for comments : 31 07 2011 Comments if any, may please be made in the format as given overleaf and mailed tothe undersigned at the above address. In case no comments are received or comments received are of editorial nature, youwill kindly permit us to presume your approval for the above document as finalized. However,in case of comments of technical in nature are received then it may be finalized either inconsultation with the Chairman, Sectional Committee or referred to the Sectional Committeefor further necessary action if so desired by the Chairman, Sectional Committee. The document is also hosted on BIS website www.bis.org.in. Thanking you, Yours faithfully, (A.K. Saini) Sc `F’ & Head (Civil Engg.)Encl: as above email : ced@bis.org.in
    • For BIS Use Only Doc: CED 22(7808) IS 13039 Draft Indian Standard (Not to be reproduced without the permission of BIS or used as an Indian Standard) EXTERNAL HYDRANT SYSTEMS – PROVISION AND MAINTENANCE – CODE OF PRACTICE (First Revision)____________________________________________________________________Fire Fighting Last Date for CommentsSectional Committee, CED 22 31 07 2011FOREWORD(Formal clause shall be added later on)One of the methods for extinguishing fire in towns, cities and industrial buildings is byproviding external hydrant systems. Fire hydrant systems consist of suitable of capacityreservoirs, arrangements to impart pressure to the water, means to convey the water tovarious locations and suitable water outlets at the required locations. In order that suchsystem could function efficiently, it is necessary to give guidance for the provision,installation, inspection and maintenance of this system.IS 9668 : 1980 is code of practice for provision and maintenance of water supplies forextinguishing fires in towns, cities and industrial buildings and IS 13039 : 1991 coversprovision and maintenance of external hydrant systems.Purpose of this revision of IS 13039 is to delete water supply requirements for mediumand large scale industries from IS 9668 and bring out an up-to-date comprehensivestandard for external hydrant systems in medium and large scale industries (excludingpetroleum refining and petrochemical plants which are governed by statutorilyregulations) including water supply requirements and those for protection of upper floors.This standard covers minimum requirements for such system. It would leave IS 9668provisions only for water supplies for towns and cities. IS 9668 shall be revised to takecare of this.Table 23 under NBC Part 4 governs requirements for small scale industries and varioustypes of individual buildings and IS 3844 : 1989 covers provisions of internal hydrantsand hose reels in individual buildings. 1
    • Doc: CED 22(7808) IS 13039 Draft Indian standard EXTERNAL HYDRANT SYSTEMS – PROVISION AND MAINTENANCE – CODE OF PRACTICE (First Revision)1 SCOPEThis standard covers provision of installation Inspection and maintenance of hydrantsystems in medium and large scale industrial risks (excluding petroleum refining andpetrochemical plants which are governed by statutorily regulations).2 REFERENCESThe standards listed at Annex A contain provisions which through reference in this text,constitute provisions of this standard. At the time of publication, the editions indicatedwere valid. All standards are subject to revision, and parties to agreements based onthis standard are encouraged to investigate the possibility of applying the most recenteditions of the standards indicated at Annex A.3 CLASSIFICATION OF OCCUPANCIESWater supply, pumping capacity and other features of the hydrant system depend notonly on the size of the risk but also on its fire growth and spread potentialities, the risksare to be categorised under the following classes in accordance with IS 1641, for thepurpose of hydrant system design:3.1 LIGHT HAZARD OCCUPANCIES 1. Abrasive Manufacturing Premises 2. Aerated Water Factories 3. Agarbatti Manufacturing 4. Aluminium/Zinc and Copper Factories 5. Analytical and/or Quality Control Laboratories 6. Asbestos Steam Packing & Lagging Manufacturing 7. Battery Charging/Service Station 8. Battery Manufacturing 9. Breweries 10. Brick Works 11. Canning Factories 12. Cardamom Factories 13. Cement Factories and/or Asbestos Products Manufacturing. 14. Ceramic Factories and Crockery and Stoneware Pipe Manufacturing. 2
    • 15. Cinema Theatres (including Preview Theatres)16. Clay Works17. Clock and Watch Manufacturing18. Clubs19. Coffee Curing & Roasting Premise20. Computer installations (Main Frame)21. Condensed Milk Factories, Milk Pasteurising Plant and Dairies.22. Confectionery Manufacturing23. Dwellings24. Educational and Research Institutes25. Electric Generating Houses (Hydro electric)26. Electric Lamps (Incandescent & Fluorescent) and TV Picture Tube Manufacturing.27. Electric Sub-Station/Distribution Station.28. Electro Plating Works.29. Electronic and/or Computer Equipments Assembling and Manufacturing30. Empty Containers Storage Yard31. Engineering Workshops.32. Fruits and Vegetables Dehydrating/Drying Factories.33. Fruit Products and Condiment Factories.34. Glass & Glass Fibre Manufacturing.35. Godowns and Warehouses Storing non-combustible Goods.36. Green houses37. Gold Thread Factories/Gilding Factories.38. Gum and/or Glue and Gelatine Manufacturing.39. Hospitals including X-ray and other Diagnostic Clinics.40. Ice Candy and Ice-cream Manufacturing.41. Ice Factories.42. Ink (excluding Printing Ink) Factories43. Laundries.44. Libraries.45. Mica Products Manufacturing.46. Office Premises.47. Places of worship48. Pottery Works.49. Poultry Farms.50. Residential Hotels, Cafes & Restaurants.51. Salt Crushing Factories and Refineries.52. Stables.53. Steel Plants (other than Gas based)54. Sugar Candy Manufacturing.55. Sugar Factories and Refineries.56. Tea Blending and Tea Packing Factories57. Umbrella Assembling Factories58. Vermicelli Factories.59. Water Treatment/Water Filtration Plants and Water Pump House. 3
    • 3.2 ORDINARY HAZARD OCCUPANCIES 1. Airport and other Transportation Terminal Building. 2. Areca nut slicing and/or Betel nut Factories. 3. Atta and Cereal Grinding. 4. Bakeries. 5. Beedi Factories. 6. Biscuit Factories. 7. Bobbin Factories. 8. Bookbinders, Envelopes & Paper bag Manufacturing 9. Bulk Storage 10. Cable manufacturing 11. Camphor Boiling 12. Candle Works. 13. Carbon Paper/Typewriter Ribbon Manufacturing 14. Cardboard Box Manufacturing. 15. Carpenters, Wood wool and Furniture Manufacturing 16. Carpet and Drugget Factories. 17. Cashew nut Factories. 18. Chemical Manufacturing. 19. Cigar and Cigarette Factories. 20. Coffee grinding premises 21. Coir, Factories, 22. Coir Carpets, Rugs and Tobacco, Hides and Skin Presses 23. Cold storage premises. 24. Cork products manufacturing 25. Dry Cleaning, Dyeing, Laundries. 26. Electric Generating stations (other than Hydel) 27. Enamelware Factories. 28. Filter & Wax paper Manufacturing. 29. Flour Mills. 30. Garages. 31. Garment Makers 32. Ghee Factories (other than vegetable) 33. Godowns & Warehouses (others). 34. Grain and/or Seeds Disintegrating and/or Crushing Factories. 35. Grease Manufacturing. 36. Hat and Topee Factories. 37. Hosiery, Lace, Embroidery & Thread Factories. 38. Incandescent Gas Mantle Manufacturing 39. Industrial Gas Mfg. Including halogenated hydrocarbon gases 40. Linoleum Factories. 41. Man-made Yarn/Fibre Manufacturing (Except Acrylic) 42. Manure and Fertiliser Works. (Blending, Mixing and granulating only) 43. Mercantile Occupancies (Dept. Stores, Shopping Complexes / Malls) 44. Mineral Oil Blending and Processing. 4
    • 45. Museums. 46. Oil & Leather Cloth Factories. 47. Oil Terminals/Depots other than those categorised under High hazard A 48. Oxygen Plants. 49. Plywood Manufacturing/Wood Veneering Factories. 50. Paper & Cardboard Mills. 51. Piers, Wharfs and Jetties - to be classified normally under ordinary hazard category unless extra hazardous materials are handled. 52. Plastic Goods Manufacturing. 53. Printing Press Premises. 54. Pulverising and Crushing Mills. 55. Rice Mills. 56. Rope Works. 57. Rubber Goods Manufacturing. 58. Rubber Tyres & Tubes Manufacturing 59. Shellac Factories. 60. Shopping Complexes (underground) 61. Silk Filatures and cocoon stores. 62. Spray painting 63. Soaps and Glycerine Factories. 64. Starch Factories 65. Steel Plants (Gas Based) 66. Tanneries/Leather Goods Manufacturers. 67. Tank farms other than those categorised under high hazard A. 68. Textile Mills. 69. Tea Factories. 70. Telephone Exchanges. 71. Theatres and Auditoriums 72. Tobacco (Chewing) and Pan-masalla Making. 73. Tobacco Grinding and Crushing. 74. Tobacco Redrying Factories. 75. Woollen Mills.3.3 HIGH HAZARD OCCUPANCIES 3.3.1 SUB-CATEGORY (A) 1. Aircraft Hangers 2. Aluminium/Magnesium Powder Plants 3. Bituminised Paper and/or Hessian Cloth Manufacturing including Tar Felt Manufacturing. 4. Cotton Waste Factories 5. Coal and/or Coke and/or Charcoal Ball Briquettes Manufacturing. 6. Celluloid Goods Manufacturing. 7. Cigarette Filter Manufacturing. 8. Cinema Films & T.V. Production Studios 9. Collieries. 5
    • 10. Cotton Seed Cleaning or De-linting Factories. 11. Distilleries. 12. Duplicating and Stencil Paper Manufacturing. 13. Fire-works Manufacturing. 14. Foamed Plastics Manufacturing and/or Converting Plants. 15. Grass, Hay, Fodder & Bhoosa (chaff) 16. Pressing Factories. 17. Jute mills & jute presses 18. LPG Bottling Plants (Mini)* * Bottling plants having total inventory not exceeding 100 MT of LPG and also bottling a total quantity of not exceeding 20 MT of LPG per shift of 8 hrs. 19. Match Factories. 20. Man Made Fibres (Acrylic fibres/yarn making) 21. Mattress and Pillow Making. 22. Metal or Tin Printers (where more than 50 % of floor area is occupied as Engineering Workshop; this may be taken as Ordinary Hazard Risk) 23. Oil Mills 24. Oil Extraction Plants (other than those forming part of ghee factories & oil refining factories.) 25. Oil Terminals/Depots handling flammable liquids having flash point of 32o C and below. 26. Paints & Varnish Factories. 27. Piers, Wharfs and Jetties – handling extra hazardous materials 28. Printing Ink Manufacturing. 29. Saw Mills. 30. Sponge Iron Plants. 31. Surgical Cotton Manufacturing 32. Tank Farms storing flammable liquids having flash point of 32o C and below. 33. Tarpaulin & Canvas Proofing Factories. 34. Turpentine & Rosin Distilleries. 35. Tyre Retreading and Resoling Factories. 3.3.2 SUB-CATEGORY (B) 1. Ammonia and Urea Synthesis Plants. 2. CNG Compressing and Bottling Plants 3. Explosive Factories. 4. LPG Bottling Plants (Other than Mini Plants) 5. Petrochemical Plants. 6. Petroleum Refineries.4 HYDRANTS/FIXED MONITORS4.1 Fire hydrants, namely, stand post type conforming to IS 908 and underground typeconforming to IS 909 shall be provided. Water shall be available immediately to all 6
    • hydrants/fixed monitors at all times, with all cut-off valves being kept open. Beforecommissioning, the hydrant system shall be flushed thoroughly.4.2 Connections for any purpose other than fire fighting are not permitted from thehydrant/fixed monitor/stand post or from any portion of the hydrant service.4.3 All hydrant outlets shall be situated 1 m above ground level.4.4 The stand posts shall be 80 mm in diameter for single headed hydrants, 100 mm fordouble-headed hydrants and monitors of 63 mm or 75 mm size and 150 mm standposts for monitor of 100 mm size. It is recommended that stand posts be painted `firered (shade No.536 as per IS 5) and numbered for easy identification.4.5 Permission to install hydrants below ground level can be given only where thehydrants are properly enclosed in a surface box of cast iron or masonry 750 mm squareand 80 mm above ground level, the top of the hydrant outlet being not more than80 mm below the top of the box.4.6 Only oblique hydrants with outlets angled towards ground shall be used. Thehydrant couplings shall be of gun metal/stainless steel of the instantaneous spring-lock(female) type of 63 mm diameter and valves shall be of the screw down type. NOTE - Orifice plates of suitable design may be provided for hydrants where the pressure exceeds 7 kg/cm2.4.7 Double-headed hydrant shall consist of two separate landing valves.4.8 Hydrants shall be easily accessible, storage of any kind on or around the hydrantbeing prohibited. Where hydrants are situated in remote locations, they shall beapproachable by means of paved pathways. They shall be protected by hinge cast ironcovers as specified in IS 3950.4.9 Hydrants located in situations where they are likely to be damaged by vehiculartraffic shall be suitably protected on all sides against possible damage. 4.10 Hydrants shall be located bearing in mind the attendant fire hazards at thedifferent sections of the premises to be protected and so as to give most effectiveservice. They shall be so distributed as to provide protection for the buildings on allsides and need not necessarily be equidistant from each other.4.11 Advantage shall be taken of convenient door and/or window openings to placehydrants so that only a minimum length of hose is required to reach the openingsthrough which fire may be attacked. In case of continuous blank walls, suitableprovision shall be made on the walls near hydrant posts for easy access inside thepremises. 7
    • 4.12 At least one hydrant post shall be provided for every 60 m of external wallmeasurement in case of Light Hazard Occupancy, for every 45 m in case of OrdinaryHazard Occupancy and every 30 m of external wall measurement or perimeter of unitbattery limit in case of High Hazard Occupancy.Measurements shall be calculated on the total length of walls of all buildings/perimeterof all battery limits to be protected except in the case of opposite buildings (other thanthose of High Hazard category) within 22.5 m of each other, where the measurement ofthe shorter opposing wall may be omitted. Further, all hydrants and monitors should beserially numbered. Notwithstanding the above, hydrants protecting utilities andmiscellaneous buildings in High hazard risks may be spaced at 45 m. 4.13 Building shall be deemed to be protected by a hydrant unless such hydrant iswithin 15 m of the building. Where any part of a building is normally used for storagepurpose or where hazardous processes are carried out, there shall be two single or onedouble headed hydrant within 15 m of the building, the layout being such that two jets ofwater can be played simultaneously on the highest point of the roof. In case ofBuildings/Plants occupied for High Hazard process or storages, the above-specifieddistance may be increased to 22.5 m.In case of buildings having roofs other than RCC, it is advisable to provide hydrants atthe roof level along with access staircases in order to fight the fire by breaking open theroofs, if necessary. 4.14 Hydrant heads shall be positioned at distances not less than 2 m from the face ofthe building or edge of the storage plot to be protected except in the case of highhazard occupancies wherein the hydrant heads shall be located not less than 7.5 mfrom the face of the building, edge of the storage plot or from the plant battery limits.4.15 In case where, owing to the size or layout of the building, or building being dividedby internal walls, any point within the building is at a distance of more than 45 m froman external fire hydrant, an internal hydrant system shall be provided so that no portionof the floor is more than 45 m from an external hydrant or 30 m from an internal hydrant.In case of large switchyards, where it is not feasible to lay internal hydrants, alternatehydrants may be replaced by monitors of suitable size. NOTE - Distance of 45 m indicated above shall be increased to 60 m for light hazard occupancies and reduced to 30 m for high hazard occupancies. 4.16 In case of storeyed buildings, satisfactory access shall be provided to all parts ofeach floor by means of incombustible internal or external staircases. Normally, aminimum of two such staircases will be needed per compartment, but in case the areaof the compartment exceeds 2,000 sq. m, an additional staircase shall be provided forevery additional 1,500 sq. m or part thereof. On the other hand, if a compartment has afloor area of less than 500 sq. m, one access staircase shall be acceptable. Theaccess staircases shall be so located that, as far as possible, no part of each floor is 8
    • more than 30 m from the nearest staircase. External access staircases shall be open tosky.The staircases shall conform to the following:Internal staircases shall be so located that atleast one of its enclosing walls is anexternal wall of the building. A door opening shall be provided in this external wall atground floor level. The enclosing walls shall be of brick work atleast 230 mm thick orreinforced concrete atleast 100 mm thick carried through and atleast 450 mm above theroof of the building, unless the roof is of jack arch or reinforced concrete construction inwhich case the walls need be carried upto the roof only. Every opening from thestaircase to any portion of the building or to a roof used as a floor shall be fitted with asingle fireproof door.NOTES - 1) The above will not apply to buildings, the upper floors of which are occupied by offices, air washer plants, rest rooms, cloak rooms, canteen and the like. 2) In case of staircases for storeyed TG hall/boiler house/mill bay of power plants, the staircases shall be distributed as far as possible along four sides of the building. The number of staircases shall be such that no part of such floor is more than 45 m from the nearest staircase. 3) External staircases without side covering need not have openings at each floor level protected by single fireproof doors. 4) There shall be no equipment within 2 m of the staircases and/or its landings. 5) Staircases shall be not less than 750 mm clear width with treads not less than and risers not more than 200 mm and under most circumstances shall the staircase have an inclination of more than 60 degrees to the horizontal. 6) Iron rung ladders or spiral staircases shall not be acceptable. 7) In case of staircases for storeyed TG hall/boiler house/mill bay of power plants, at least 50 % of the number of staircases thus arrived at shall conform to, and The remaining staircases shall be preferably located along the periphery of the building, but need not necessarily be separated as per regulations. 8) In the case of enclosed staircases, all windows therein falling within 3 m of any other openings in the building shall be protected by wired glass in steel framework conversely, in the case of open-sided staircases, window and door openings of the building falling within 3 m of the staircase shall be protected by wired glass in steel framework and single fireproof door respectively 9
    • The latter part of this clause shall not apply to buildings, which are essentially open sided. 9) Exits to the access staircases shall always be kept open during working hours. During non-working hours, the exits may be locked from the staircase side only. Locks of all exits shall have one master key, which shall be available either at the main gate, or any other prominent and easily accessible location known to the fire fighting personnel. Alternatively, the key shall be kept in a glass-fronted box or in the hose box on the staircase landing. 10) A hydrant shall be provided on every floor landing which shall not be less than 1.5 m x 1 m. The mains feeding the landing hydrants shall be provided with a cut-off valve at ground level (also see Note 4 under 7.5.10 and MONITORS4.17.1 Tall columns, structure, towers and equipment where it may not be possible toprovide access staircases with hydrants on landing thereof, will be considered asprotected by hydrants at ground level, provided they are less than 15 m in height.When the height exceeds 15 m, the concerned hydrants shall be replaced by monitors.Branch pipe/nozzle of monitor shall be of gun metal/ stainless steel.4.17.2 Alternate hydrants for protection of loading unloading bays, rail/truck gantriesshall be replaced by water/foam monitors.4.18 PROTECTION OF BASEMENTSStaircases/ramps shall provide access to all parts of the basement directly from theoutside of the building at ground level. The number and location of the staircases/rampsshall be such that no part of the basement is more than 45 m from the neareststaircase/ramp.It is recommended that the staircase/ramp be provided with emergency lightingfacilities. Where maintenance of illumination depends upon changing from one energysource to another, there shall be no appreciable interruption of illumination duringchangeover. Where emergency lighting is provided by means of electric generator, adelay of not more than 10 seconds shall be permitted for changeover. Emergencylighting facilities shall be arranged to maintain proper illumination for a period of one-and-a-half hours in the event of lighting failures. The emergency lighting system shall beso arranged as to provide sufficient illumination automatically in the event of anyinterruption of normal lighting.One landing valve shall be provided for each staircase/ramp at each basement level inaddition to the provision of a hydrant at the ground level. Proper drainage facility shallbe provided to drain the fire-fighting water out of the basement. 10
    • 4.19 Storage of material in the open shall be protected as under: Material Protection Metals, Metallic One single hydrant for every 60 m of storage goods, Machinery periphery located beyond 2 m but within 15 m of and other non- storage area. hazardous storage Coal or Coke One single hydrant for every 45 m of storage periphery located beyond 2 m but within 15 m of storage area. Other storages One double hydrant for every 45 m of the storage periphery located beyond 2 m, but within 22.5 m of storage area. NOTES – 1) In the case of open storage areas of bamboo, bagasse, grass/hay and timber, at least 50 % of hydrant shall be replaced by fixed monitors having nozzle bore of 38 mm diameter if the individual stack height is more than 6 m and total storage exceeds 5,000 tonnes. 2) Where hydrant/monitors located along one longer side of a storage area are more than 90 m from those along the other longer side, moniitors having jets of longer reach may be accepted.4.20 Hydrants for the protection of combustible/flammable liquid storage tanks shall belocated beyond 15 m, but within 35 m of tank shell as specified below : DIAMETER OF NO. OF HYDRANTS TANK Tanks upto 10 m One double headed or two single headed hydrants. dia. Tanks above 10 Two double headed or four single headed hydrants. m but upto 20 m dia. Tanks above 20 Three double headed or six single headed hydrants. m dia. 11
    • NOTES – 1) In case tanks are located more than 22.5 m from the dyke walls, one double hydrant or two single hydrants shall be replaced by a 38 mm monitor. (Every alternate monitor should be a foam monitor and a minimum of one such foam monitor should be provided) 2) For the tanks located more than 45 m from the dyke walls, in addition to the monitor(s), the tanks shall be protected by Fixed Foam/Medium Velocity Water Spray System (Manual/Automatic) 3) Hydrants/Monitors shall not be installed within dyked enclosures nor can the hydrant main pass through it. 4) Floating roof storage tanks and floating-cum-fixed storage tanks exceeding 30 m in diameter and fixed roof storage tanks containing products having flash point below 32o C shall be protected by supplementary medium velocity water spray system or fixed/semi fixed foam system (either automatic or manually operated). In case of foam system, there shall be additional protection by water spray system in the form of a ring along the top edge of the vertical face of the tank. 5) Insulated tanks shall also be provided with M.V. Water Spray Protection. 6) No water spray protection is required for ammonia spheres/tanks. 7) Cryogenic storage tanks and double walled tanks shall be treated on par with the insulated tanks. However, metallic roof of the double walled tanks (RCC or otherwise) will need to be protected with M.V. Water Spray System (mandatory) at a rate of 3 lpm/m2 for the roof portion only. 8) Adequate provision shall be made to promptly and effectively dispose off all liquids from the fire areas during operation of fire protection systems in such areas.4.21 For protection of spheres/bullets, hydrants/monitors shall be located beyond 15 mbut within 35 m of the shell of the spheres/bullets. The number of hydrants/monitorsshall be governed by the water capacity of the bullets/spheres as specified hereunder: 12
    • WATER CAPACITY NO. OF HYDRANTS Upto 50 m3 Three single hydrants (or one single + one double headed hydrants) Above 50 m3 but upto One monitor + two single (or one double headed 150 m3 hydrants) Above 150 m3 Two monitors + four single hydrants (or two double headed hydrants) NOTES – 1) Supplementary protection of bullets/spheres by medium velocity water spray system (either automatic or manually operated) is a must. 2) Hydrant/monitor shall not be installed within dyked/-fenced enclosures nor can hydrant mains pass through such enclosures.5 PUMPS5.1 General5.1.1 Pumps conforming to IS 12469 shall be exclusively used for fire fighting purposesand shall be: a) Electric Motor or Steam Turbine driven centrifugal pumps, or b) Compression Ignition Engine driven centrifugal pumps, or c) Vertical Turbine Submersible pumps.5.1.2 Pumps shall be direct-coupled, except in the case of engine-driven VerticalTurbine Pumps wherein gear drives conforming to approval standard of Factory Mutualsystem or right angled gear drive class no. 1338 shall be used. Belt-driven pumps shallnot be accepted.5.1.3 Parts of pumps like impeller, shaft sleeve, wearing ring etc. shall be of non-corrosive metal preferably of brass or bronze or stainless steel. Where seawater is usedor where the quality of water necessitates the use of special metals/alloys, the use ofsuch metals or alloys shall be insisted.5.1.4 The capacity of the pump(s) would depend on whether or not tapping(s) for waterspray and/or foam protection for tanks/spheres/bullets/plants/other facilities is (are)taken from the hydrant service. In case there is no tapping from the hydrant service, thecapacity of the pump shall be as per hereunder. However, where the waterdemand for water sprays and/or foam protection as per,,, 13
    • and is in excess of that required for the hydrant system, the pumping capacityshall be based on the higher water demand. The capacity for hydrant service shall be determined by the class of occupancyand size of installation as per Table 1 hereunder: TABLE – 1 PUMP DELIVERY CAPACITY PRESSURE NATURE NUMBER OF HYDRANTS LPS/(m3/h) AT PUMP OF RISK DISCHARGE AT RATED CAPACITY (kg/cm2) 1 Light i) Not exceeding 20 27 (96) 5.6* Hazard ii) Exceeding 20 but not 38 (137) 7 exceeding 55 iii) Exceeding 55 but not 47 (171) 7 exceeding 100 iv) Exceeding 100 ** 47 (171) plus 47 7/8.8 (171) for every additional 125 hydrants or part thereof. NOTES – *The pump delivery pressure will need to be 7 kg/cm2 if the highest floor of the risk is at a height exceeding 15 m above the surrounding ground level. **Where the systems are hydraulically designed, the total pumping capacity need not be greater than 190 (683) irrespective of the number of hydrant points. 14
    • PUMP DELIVERY CAPACITY PRESSURE NATURE NUMBER OF HYDRANTS LPS/(m3/h) AT PUMP OF RISK DISCHARGE AT RATED CAPACITY (kg/cm2) 2 Ordinary i) Not exceeding 20 38 (137) 7 Hazard ii) Exceeding 20 but not 47 (171) 7 exceeding 55 iii) Exceeding 55 but not 76 (273) 7 exceeding 100 iv) Exceeding 100 ** 76 (273) plus 76 7/8.8 (273) for every additional 125 hydrants or part thereof.**NOTES - 1) In case of new systems where the number of hydrants is expected to be between 100 and 150; and where further extension of the system beyond 150 hydrants is not anticipated, a single pump of 410 m3/h capacity at 7/8.8 Kg/cm2 may be permitted. Likewise in case of old installations where the system is extended beyond 100 hydrants but not exceeding 150 hydrants; and where further extension beyond 150 hydrants is not anticipated, an additional pump of 171 m3/h at 7 Kg/cm2 may be permitted. 2) Where the systems are hydraulically designed, the total pumping capacity need not be greater than 302 (1092) irrespective of the number of hydrant points. 3) Where situation warrants, higher capacity pumps not exceeding 410 m3/h and 88 m head may be acceptable. 4) In order to achieve the minimum pressure of 3.5 Kg/cm2 at higher elevation, booster pump(s) with a capacity of 137 m3/h, having requisite rated head may be acceptable. The booster pump shall be regarded as a pressure-compensating device only. A higher capacity booster pump may be stipulated where considered necessary. Booster pump shall be located at ground level only. 15
    • Electrically driven booster pump(s) shall in addition to the normal supply be connected to the emergency power supply also. NATURE NUMBER OF HYDRANTS PUMP DELIVERY OF RISK CAPACITY PRESSURE LPS/(m3/h) AT PUMP DISCHARGE AT RATED CAPACITY (kg/cm2) 3 High i) Not exceeding 20 47 (171) 7 Hazard (A) ii) Exceeding 20 but not 76 (273) 7/8.8 exceeding 55 iii) Exceeding 55 but not 114 (410) 7/8.8 exceeding 100 iv) Exceeding 100 114 (410) plus 7/8.8/10.5 114 (410) for every add- itional 125 hydrants or part thereof. High i) Not exceeding 20 Two of 47 (171) 7 Hazard (B) ii) Exceeding 20 but not Two of 76 (273) 7/8.8 exceeding 55 iii) Exceeding 55 but not Two of 114 7/8.8 exceeding 100 (410) x) **Exceeding 100 Two of 114 7/8.8/10.5 (410) plus One of 114 (410) for every add- itional 200 hydrants or part thereof.** This provision will apply only in cases where the hydrant service has been hydraulically designed 16
    • NOTES - 1) In case of High Hazard (B) risks where the aggregate pumping capacity required in terms of the above Table or of rules,,, and hereunder exceeds 1,640 m3/h, larger capacity pumps are acceptable provided the capacity of the largest pump does not exceed 25 % of the aggregate installed pumping capacity is disrupted when any pump is in- operative. 2) In case of High Hazard occupancies, the pump delivery pressure shall be 7 Kg/cm2 if the highest floor of the risk is at a height exceeding 15 m above the surrounding ground level. 3) In case of Oil Refineries, Petrochemical complexes or other risks where double headed hydrants are used throughout the risk so that the total number of hydrants (counting a double headed hydrant as two hydrants) is about double the number of hydrants required as per the general requirements of this Manual, a double headed hydrant may be regarded as a single hydrant only. Where storage tanks containing flammable liquids are protected by a mediumvelocity water spray system tapped from the hydrant service, the water requirements ofthe spray system shall be calculated for tanks located in a common dyke within adistance of 15 m (or the diameter of the larger tank which have the largest aggregateshell surface area at a rate of 10 litres /minute/m2 of tank shell surface area exceptwhere the system has been designed to comply with mandatory protection in whichcase the rate of flow can be reduced to 3 lpm/m2).Even in the case of tanks located in separate dykes, the shell surface area of all tankslocated within a distance of 15 m (or the diameter of the larger tank if the same is morethan 15m) shall be aggregated and the water demand of such cluster of tanks shall becalculated at the rate of flow indicated in the foregoing clause.The water requirement of the spray system worked out as above shall then be loadedfor supplementary hose stream protection as under: Where the largest tank in a dyke has a Water requirement diameter i) Upto 10 m 1,150 LPM ii) More than 10 m and upto 20 m 2,250 LPM iii) Over 20 m 3,400 LPM 17
    • If the total water requirement for spray protection and hose stream protection forstorage tanks worked out as above exceeds the requirements of the hydrant service asper Table 1, the pumping capacity shall be equivalent to the former. Where storage tanks are protected by a fixed foam system connected to thehydrant service, water requirement for the foam system shall be equivalent to thatrequired by the largest protected tank at a rate of 5 litres/minute/m2 of liquid surfacearea for fixed roof tanks and 12.2 lpm/m2 of rim seal area in case of floating roof tanks.Other conditions regarding supplementary hose stream protection, pumping capacityetc., would remain the same as for water spray protection. Where spheres/bullets are protected by a medium velocity water spray systemtapped from pressurised hydrant service, water requirements of the spray system shallbe determined as under:Taking into consideration the configuration of bullets/sphere, the one which has thelargest number of other bullets/spheres within R +15 m of the centre thereof shall beselected. The water demand shall then be worked out at the rate of 10 L/min/m2 of theaggregate shell surface area of the bullet/spheres concerned and all bullets/sphereswithin R + 15 m of the centre thereof. Water application may be reduced to 5 LPM/m2where the bullets/Spheres coated with approved passive materials providing fireresistance of at least 2 hours.The water requirement of the spray system worked out as above shall then be loadedfor supplementary hose stream protection as under: Water capacity of Bullets/ Supplementary hose stream protection Spheres (m3) (LPM) Upto and including 50 m3 1,750 Above 50 m3 and upto 150 m3 2,250 Above 150 m3 4,500If the total water requirement for spray protection and hose steam protection forspheres/bullets worked out as above exceeds the requirements of the hydrant serviceas per Table 1, the pumping capacity shall be equivalent to the former. Note - For design criteria of medium velocity water spray system reference shall be made to IS 15325. 18
    • Where the plants and other facilities are protected by medium velocity waterspray systems, tapped from hydrant service, water requirement of the spray systemshall be determined as per rules for water spray systems. Water requirements of thespray systems worked out as above shall then be loaded by requirements forsupplementary hose stream protection which shall be limited to capacity of individualhydrant pump required had there been no spray protection with a maximumof 4500 LPM.If the total water requirement for spray protection and hose stream protection workedout as above exceeds the requirements of the hydrant service as per Table 1, thepumping capacity shall be equivalent to the former. Where transformers are protected by high velocity water spray system tappedfrom hydrant system, water requirements of the spray system shall be determined asper rules for water spray system. Water requirement of the spray system worked out asabove shall then be loaded by 1,750 LPM for supplementary hose stream protection.If the total water requirement for spray protection and hose stream protection workedout as above exceeds the requirements of the hydrant service as per Table 1, thepumping capacity shall be equivalent to the former. Where plants and other facilities are protected by sprinkler system tapped fromthe pressurised hydrant service, water requirement of the sprinkler system shall bedetermined as per the rules for sprinkler system. If the total water requirement forsprinkler system exceeds the requirement of the hydrant service as per Table 1, thepumping capacity shall be equivalent to the former.5.1.5 Pumps shall be capable of furnishing not less than 150 % of rated capacity at ahead not less than 65 % of the rated head. The shut-off head shall not exceed 120 % ofrated head in the case of horizontal pumps and 140 % in the case of vertical turbinetype pumps.5.1.6 Each pump shall be provided with a plate giving, the delivery head, capacity andthe number of revolutions per minute.5.1.7 In case of electrically driven pumps it is recommended that compression ignitionengine driven stationary pump of similar capacity be installed as a standby and viceversa. However, where the hydrant service consists of more than one pump, not morethan half the total number (total number + 1 in case of odd number) of pumps shall haveprime movers of one type.Notwithstanding the above, if power to motorised fire pumps is obtained from twosources, one of which is a captive generating plant located in a block either 6 m awayfrom all surrounding buildings, more than half the total number of pumps may be of theelectrically driven type. 19
    • 5.1.8 Each fire service pump shall be provided with an independent suction pipe withoutany sluice or cut-off valves therein, unless the pump is situated below the level of thewater supply in which case sluice or cut-off valves would be essential.Where the water supply has fibrous or equally objectionable matter in suspension ormud and/or sand liable to cause accumulation in the installation, suction pipe(s) shall beinstalled in a jack well fed through a culvert from the main water supply. At the supplyend of the culvert, a sluice or gate valve shall be provided. NOTE - The suction pipe shall be connected to the pump inlet through an eccentric reducer to avoid air pockets.5.1.9 The diameter of the suction pipe shall be such that the rate of flow of waterthrough it does not exceed 90 m/minute when the pump is delivering at its rateddischarge. If, however, the pump is situated below the level of its water supply, thediameter of the suction pipe/header shall be based upon a rate of flow not exceeding120 m/minute.5.1.10 Where the pump is to operate under suction lift conditions, the Net PositiveSuction Head (NPSH) available at site shall be 0.50 m in excess of the actual valuerequired at 150 % of the duty point as per the manufacturer’s curve of the pump. For thepurpose of the above, NPSH available at site shall be computed by deducting the sumof the static lift (measured from the ‘low water level’ upto the centre line of the pump)and friction loss in the suction pipe and fittings from atmospheric pressure.5.1.11 Fire Pumps in High Hazard (B) category occupancies shall be provided withpositive suction and automatic starting devices capable of sequential starting of thepumps. The pumps shall be connected to audible alarm such as hooter or a sirenlocated in a prominent place outside the pump house. Where there is a central firestation in the premises, additional alarm point shall also be provided in the fire station.The pumping arrangement shall incorporate Jockey Pumps to take care of systemlosses. The capacity of the Jockey Pumps shall neither be more than 5 % of theinstalled pumping capacity nor less than 3 % thereof (with a minimum of 10.8 m3/hr.)unless the aggregate installed pumping capacity is in excess of 820 m3/hr, in whichcase the capacity of the Jockey Pump (s) shall be not less than 25 m3/hr plus 1 % of theinstalled pumping capacity in excess of 820 m3/hr. Installation of Jockey Pumps helps toprevent hydraulic surges.5.1.12 In the case of Light, Ordinary and High Hazard (A) category occupancies, whenthe pump is above the level of its water supply, there shall be a foot valve and a`priming arrangement, the latter consisting of a tank (having a capacity at least threetimes that of the suction pipe from the pump to the foot valve subject to a minimum of1000 litres) connected to the delivery side of the pump by a metal pipe having aminimum internal diameter of 100 mm with a stop valve and a non return valve thereinof the same size. 20
    • A reliable independent filling arrangement and a level indicator shall be provided for thepriming tank and, wherever feasible, a continuous overflow arrangement shall beprovided in order to ensure that the tank is always full. It is recommended that forpumps taking suction from a stored water supply, a vortex plate shall be installed atentrance to the suction pipe.Wherever circumstances permit, the pumps shall preferably be fixed below the level ofthe water supply (positive suction). If the pumps are automatic in action, they shallnecessarily be so fixed. However, if the priming arrangements are such as to ensurethat the suction pipe shall be automatically maintained full of water notwithstanding aserious leakage there from (the pump being automatically brought into action toreplenish the priming tank should the latter be drawn upon at a greater rate than therate at which it is fed from any other source), positive suction may not be insisted. Insuch cases, the capacity of the priming tank need not exceed 450 litres and thediameter of the priming pipe need not exceed 50 mm. Jockey Pump(s) shall,nevertheless, be provided in systems where the main pumps are automatic in action. NOTES - 1) A pump shall be considered as having positive suction only if the quantity of water in the reservoir above the low water level or the top of the pump casing, whichever is higher is equivalent to the requirements of Table 2. 2) Pumps are not permitted normally to have partly positive (flooded) suction and partly negative suction. But under special circumstances such arrangement may be permitted where at least 80% of water level would enable positive suction and remaining 20% negative suction. In all such cases priming tank also shall be provided.5.1.13 Each pump shall be provided with a non-return valve and a sluice valve on thedelivery side, the sluice valve being installed on the upstream side of the non-returnvalve. A pressure gauge shall also be provided between the pump and the non-returnvalve. The size of the non-return valve and cut off (sluice) valve shall not be less thanthe size of the initial delivery pipe and, in no case, less than the delivery outlet of thepump. Butterfly Valves can create turbulence adversely affecting the pump performanceno Butterfly valve shall be installed on the suction side.5.1.14 When the premises are also protected by sprinkler installation having elevatedtank(s) as one of the main sources of water supply, and where the arrangement forfilling the tank(s) is taken from the hydrant service, the connection shall be takendirectly from the pump to the top of the tank (through a stop valve) and not through thehydrant mains. (See fig. below) 21
    • 5.1.15 Pumps shall not be installed in open. The pump rooms shall normally havebrick/concrete walls and non-combustible roof, with adequate lighting, ventilation anddrainage arrangements.The pump room shall be so located as to be both easily accessible and where anyfalling masonry and the like from other buildings occasioned by fire or otherwise, cannotdamage the pump room. Normally, pump rooms shall be located 6 m away from allsurrounding buildings and overhead structures. Where this is not feasible the sides ofthe pump room falling within 6 m of the surrounding buildings shall be blank masonrywalls of 355 mm thickness and the roof of the pump room shall be of RCC. Likewise,when the pump room is attached to a building a perfect party wall shall be constructedbetween the pump room and the attached building, the roof of the pump room shall beof RCC construction at least 100 mm thick and access to the pump room shall be fromthe outside. In no case shall the pump from be sited within a building occupied for anyother purpose. NOTE - For High Hazard (B) occupancies, in addition to the above provisions, the pump room shall be located 30 m clear of all equipment where flammable fluids having flash point below 65o C are handled and/or stored and 15 m clear of pipes/pipe racks (carrying other than water.).5.2 ELECTRICALLY DRIVEN PUMPS5.2.1 The sub-station(s) and/or D.G. house(s)-supplying power to the fire pump(s) shallbe of incombustible construction and shall be located at least 6 m away from allsurrounding buildings. Where this is not feasible, all door and window openings of thesurrounding buildings within 6 m of the sub-station(s) and/or D.G. house(s) shall beprotected by single fireproof doors and 6 mm thick wired glasses in steel frameworkrespectively. Like-wise, roof eaves, if any, of the surrounding buildings falling within6 m of the sub-station(s) and/or D.G. house(s) shall be cut and wall raised as a parapet.The above provisions shall also apply when the sub-station(s) and D.G. house(s) arewithin 6 m of each other. 22
    • Where the sub-station(s) and/or D.G. house(s) are attached to buildings, perfect partywall shall be constructed to segregate the sub-station(s) and/or D.G. house(s) from theattached buildings and where the attached building is storeyed, the roof of the sub-station(s) and/or D.G. house(s) shall be of R.C.C. construction of at least 100 mmthickness.Transformer cubicles inside these sub-stations shall be separated from H.T. and L.T.cubicles and from each other by blank walls of bricks/stone/concrete blocks of 355 mmthickness or of R.C.C of 200 mm with door openings, if any therein, protected by singlefireproof doors. The sub-station(s) and D.G. house(s) shall also be separated from eachother as above.Transformers installed outdoors, which are supplying power to fire Pump(s), shall alsobe located at least 6 m away from all surrounding buildings (including sub-station(s)and/or D.G. house(s). Where this is not feasible all door and window openings of thebuilding(s) [including sub-station(s) and/or D.G. house(s).] within 6 m of the transformershall be protected by single fireproof doors and 6mm thick wired glasses in steelframework respectively. Likewise, roof eaves of the building(s) falling within 6 m of thetransformer shall be cut and wall raised as a parapet. Baffle walls ofbricks/stone/concrete blocks of 355 mm thickness or of R.C.C. of 200 mm thicknessshall be constructed between two transformers and these walls shall be extendedhorizontally 600 mm beyond the extremities of the transformers and vertically 600 mmabove the highest point of the transformers. NOTES – 1) Where oil capacity of the individual transformer is larger than 5,000 litres separating walls must be provided in between the transformers and a clear distance as per the following table shall be maintained between the transformers and the substation: OIL CAPACITY OF INDIVIDUAL CLEAR SEPARATING TRANSFORMER DISTANCE (m) 5,000 to 10,000 litres 8.0 Above 10,000 upto 20,000 litres 10.0 Above 20,000 upto 30,000 litres 12.5 Over 30,000 litres 15 23
    • 2) For High Hazard (B) occupancies, substation(s) supplying power to the fire pump(s) shall, in addition to complying with the above provisions, be located 30 m clear of all equipment where flammable fluids having flash point below 65o C are handled and/or stored5.2.2 Electric supply feeder (s) to sub-station(s) supplying power to fire pump shall,consist of armoured cables buried underground which shall not pass under any buildingor permanent structures.If the feeders are laid inside an underground cable duct/ gallery, they shall be placed ina corner of the duct/gallery and shall be isolated from other cables in the duct/gallery bymeans of fire bricks/sand packing/other suitable passive protection of at least ½ an hourfire rating.Under extenuating circumstances, where it is not feasible to lay the feedersunderground, overhead feeders may be laid provided they do not fall within a horizontaldistance of: A) 15 m of any process buildings/plant or tanks containing flammable liquids. or B) 6 m of any other building or tanks containing non-flammable liquids or of storage in open. NOTE - in case of high hazard (B) occupancies, all substations (except main receiving station in the route of the electrical supply to the fire pump (s) which receive power by overhead feeders shall be provided with two sets of feeders which, apart from conforming with the above distance provisions, shall be run along two different routes in such a way that failure of more than one route due to a single mishap would be a remote possibility.5.2.3 A direct feeder without any tapping shall be laid from the sub-station to the pumphouse. The feeder shall consist of an armoured cable buried underground and shall notpass under any building or permanent structure.The cable run inside the substation from the breaker up to its point of burial or entry intocable duct/gallery shall be provided with suitable passive protection of at least ½ anhour fire rating.If the feeder is laid inside an underground cable duct/gallery, it shall be placed in acorner of the duct/gallery and shall be isolated from other cables in the duct/gallery bymeans of fire bricks/sand packing/other suitable passive protection of at least ½ an hourfire rating. 24
    • Under extenuating circumstances, overhead feeders may be laid provided they do notfall within a horizontal distance of: A) 15 m of any process buildings/plant or tanks containing flammable liquids. or B) 6 m of any other building or tanks containing non-flammable liquids or of storage in open. NOTE - In case of High Hazard `B occupancies if the feeder to the fire pump (s) is not buried underground, two sets of feeder shall be provided which shall: A) Conform to the above distance provisions B) Be run along two different routes in such a way that failure of more than one route due to a single mishap would be a remote possibility.5.2.4 Sufficient spare power shall always be available to drive pumping set(s) at alltimes throughout the year.5.2.5 The electric supply to the pumping set(s) shall be entirely independent of all otherequipment in the premises i.e. even when the power throughout the entire premises isswitched off, the supply to the pump shall continue to be available un-interrupted. Thiscan be achieved by taking the connection for the pump(s) from the incoming side of themain L.T. breaker. However, in cases where two or more transformers and/or sourcesof supply are connected to a common bus bar the connection may be taken through thebus bars. (See figures below)5.2.6 The fire pump circuit shall be protected at the origin by an automatic circuitbreaker so set as to permit the motor to be overloaded during an emergency to themaximum limit permissible by the manufacturers. Further, the under voltagerelease/`no volt’ coil of the circuit breaker shall be removed. NOTE - Where cable lengths are long enough to warrant back-up protection, such a protection may be provided. 25
    • 5.2.7 It is recommended that telltale lamps, which would continuously glow when poweris available to the fire pump(s) circuit, be provided and fixed in a prominent position,both in the substation and in the pump room.5.2.8 Where there is more than one source of power for the operation of pumping set(s)every electrical circuit shall be so designed as to ensure that when necessary, the set(s)will continue to operate without the manual operation of an emergency switch.5.2.9 The pumping set(s) shall be securely mounted on a robust bedplate, if of thehorizontal type, and shall be free from vibration at all variations of load.5.2.10 The motor shall be of continuous rating type and its rating shall be at leastequivalent to the horsepower required to drive the pump at 150 % of its rated discharge.(See The motor shall be of totally enclosed type or drip proof type, the latter havingtheir air inlets and outlets protected with meshed wire panels to exclude rodents,reptiles and insects.5.2.12 The motors shall be wound for Class B insulation and the windings shall bevacuum impregnated with heat and moisture resisting varnish and preferably glass fibreinsulated to withstand tropical conditions.5.2.13 Motors wound for high tension supplies shall have a suitable fixed warmingresistance to maintain the motor windings in a dry condition at all times. The resistanceshall be connected to the lighting or other equivalent circuit.5.2.14 Heating apparatus shall also be provided, for medium tension motors where theyare located below ground level, in order to maintain the motor windings in a drycondition. Adequate drainage arrangements shall also be provided in the pump housein such cases.5.2.15 The incoming cable to the fire pump room shall terminate in an isolating switchfuse unit incorporating HRC fuses and provided with a distribution system wherenecessary.5.2.16 The starting switchgear for the fire pumps shall incorporate an ammeter with aclear indication of the motor full load current. Remote controlled starting arrangementsare also acceptable.5.2.17 Cables for motors and switchgear shall be armoured type5.2.18 It is recommended that equipment throughout be painted fire red and suitablymarked for identification. 26
    • 5.2.19 Necessary spare parts including a set of fuses shall be kept in readiness in aglass-fronted box in the pump house.5.3 COMPRESSION IGNITION ENGINE DRIVEN PUMPS5.3.1 PUMP ROOMThe Pump Room shall be artificially heated, if necessary, to maintain the temperature of othe room above 10 C. Adequate ventilation shall be provided for the air required for oaspiration and to limit the temperature rise in the room to 10 C above the ambienttemperature when the engine is on full load.5.3.2 ENGINE5.3.2.1 The Engine shall be: a) Able to accept full load within 15 s from the receipt of the signal to start. b) Capable of operating continuously on full load at the site elevation for a period of six hours. c) Provided with an adjustable governor to control the engine speed within 10% of its rated speed under any condition of load upto the full load rating. The governor shall be set to maintain rated pump speed at maximum pump load. d) Provided with an in-built tachometer to indicate R.P.M. of the engine. Any manual device fitted to the Engine that could prevent the engine startingshall return automatically to the normal position. Engines, after correction for altitude and ambient temperature, shall have bareengine horsepower rating equivalent to the higher of the following two values a) 20 % in excess of the maximum brake horsepower required to drive the pump at its duty point. b) The brake horsepower required driving the pump at 150 % of its rated discharge.5.3.3 ENGINE SHUT-DOWN MECHANISMThis shall be manually operated and return automatically to the starting position afteruse. 27
    • 5.3.4 FUEL SYSTEM5.3.4.1 FUELThere shall be kept on hand at all times sufficient fuel to run the engine on full load forsix hours, in addition to that in the engine fuel tank. FUEL TANKThe fuel tank shall be of welded steel. The tank shall be fitted with an indicator showingthe level of the fuel in the tank. The capacity of the tank shall be sufficient to allow theengine to run on full load for: CLASS OF HAZARD CAPACITY (hours) Light Hazard 2 Ordinary Hazard 4 High Hazard (A) 6 High Hazard (B) 8 NOTE - where there is more than one compression ignition engine driven pump set there shall be a separate fuel tank and fuel feed pipe for each engine. FUEL FEED PIPESAny valve in the fuel feed pipe between the fuel tank and the engine shall be placedadjacent to the tank and it shall be locked in the open position. Pipe joints shall not besoldered and plastic tubing shall not be used.5.4 STARTING MECHANISMProvision shall be made for two separate methods of engine starting viz: a) Automatic starting by means of a battery powered electric starter motor. The battery capacity shall be adequate for ten consecutive starts without recharging with a cold engine under full compression. b) Manual starting NOTE - The starter motor used for automatic starting may also be used for manual starting provided there are separate batteries for manual starting. 28
    • 5.6 BATTERY CHARGINGThe means of charging the batteries shall be by a 2-rate trickle charger with manualselection of boost charge and the batteries shall be charged in position. Equipment shallbe provided to enable the state of charge of the batteries to be determined.5.7 ENGINE EXERCISINGThe test shall be for a period of at least five minutes each day.6 WATER SUPPLY6.1 Water for the hydrant services shall be stored in an easily accessiblesurface/underground lined reservoir or above ground tanks of steel concrete ormasonry. The effective capacity of the reservoir above the low water level (definedhereunder), or above the top of the pump casing (in case of flooded suction) for thevarious classes of occupancies and size of hydrant installations shall be as indicated inthe Table 1.NOTES – 1) The low water level is a point atleast three times the diameter of the suction pipe above the draw-off point. (See figs.4, 5 and 6). In cases where requirements of low water level cannot be complied with orifice plate can be installed at entrance of the suction pipe. 2) Large natural reservoirs with water capacity exceeding 10 times the aggregate water requirements of all Fire Pumps there from may be left un-lined.6.2 Reservoirs of and over 2,25,000 litres capacity shall be in two interconnected equalcompartments to facilitates cleaning and repairs.The fore bay supplying water to the thermal power station fed by canals from perennialwater sources like rivers, rivulets, dams etc. may be accepted as firewater reservoirprovided the availability of 2 hours pumping capacity is ensured.The cooling water pond (s) may also be accepted as firewater reservoir provided theavailability of 2 hours pumping capacity is ensured. Cooling water basins shall not beacceptable as equivalent to cooling water ponds.6.3 The size of the firewater sump shall be such that the smaller side is at leastequivalent to six times the diameter of the largest suction pipe. The suction pipe (s)shall be located along the central longitudinal axis of the sump and the positioning ofthe pipes shall be such that no pipe is within a distance of twice its own diameter fromanother suction pipe or from the wall of the sump. 29
    • 6.4 Where the Fire pump(s) draw water from the reservoir under suction lift conditionsthe two compartments shall be connected to a common sump through sluice or gatevalves.6.5 In case of dual purpose reservoirs catering to fire water and general waterrequirements the general water pumps shall draw their supply from a separate sumpwhich shall be connected only to the fire water sump, the interconnection being solocated that the effective quantity (as defined above) of water available in the reservoirfor fire water requirements below the level of the interconnection is atleast equivalent tothe quantities indicated in Table2. Incoming mains shall be connected to Fire waterCompartments and only overflow of fire water compartments should go to process.6.6 Where the reservoir provides positive suction for the fire pump(s) tapping shall betaken from both the compartments and shall be connected through sluice valves to acommon suction header. The pumps, in turn, shall draw their suction from the commonheader through sluice valves. In case of dual purpose reservoirs catering to fire waterand general water requirements, the tapping for the general water pumps shall be takenat a higher level such that the capacity of the reservoir between the low water level asdefined heretofore (or the top of the fire pump casing in case it is higher than the lowwater level) and the general water tapping is at least equivalent to the requirementsindicated in Table 2. 30
    • TABLE - 2 NATURE OF CAPACITY OF STATIC STORAGE EXCLUSIVELY RISK RESERVED FOR HYDRANT SERVICE 1. Light Hazard Not less than 01 hour’s aggregate pumping capacity with a minimum of 1,35,000 litres. 2. Ordinary Not less than 2 hour’s aggregate pumping capacity. Hazard 3. High Hazard Not less than 3 hour’s aggregate pumping capacity (A) 4. High Hazard Not less than 4 hours aggregate pumping capacity (B) NOTES – 1) The capacity of the reservoir for ordinary and high hazard class occupancies may be reduced by the quantum of inflow [of one hour in case of ordinary hazard, 90 minutes in case of high hazard (A) and two hours in case of high hazard (B) occupancies), from a reliable sources (other than towns main), but in no case shall the reservoir capacity be less than 70 % of that mentioned above. 2) In case of light hazard class occupancies the minimum capacity of the reservoir shall be increased to 2,25,000 litres if the highest floor of the building is more than 15 m above the surrounding ground level.7 MAINS7.1 The hydrants mains shall normally be laid underground or in masonry culverts withremovable covers of incombustible construction according to the provisions given inIS 5822 and shall be of any one of the following types: a) Cast Iron double flanged pipes conforming to the following standards:Type of Pipes Class of Pipes Indian StandardHorizontally Cast Iron Pipes B IS 7181Vertically Cast Iron Pipes A S 1537Centrifugally Cast (Spun) Iron Pipes A IS 1536Centrifugally Cast (Spun) Ductile Iron Pipes A IS 8329 31
    • NOTE - In case of vertically cast pipes, where the nominal diameter of the pipes exceeds 300 mm or where the pump delivery pressure exceeds 7 kg/ cm2, Class `B pipes would be necessary. b) Centrifugally Cast (Spun) Iron Class `A’ Pipes with Tyton Joints – (Rubber gasketed) c) Wrought or mild steel pipes (galvanised or un-galvanised) of ‘Medium’ grade conforming to IS 1239 or IS 3589 having welded joints and coated and wrapped as per IS 10221. (MS pipes may be allowed for extension of existing systems which are laid with CI pipes) Haliday Testing for Wrapping and Coating is essential. Holiday Testing may preferably be carried by flexible and detachable ring probe, which will enable the entire 360o of the surface of the pipe to be scanned. At least 10 % of all the welded joints shall be radiographically tested and half of the joints radiographed shall be the ‘field joints’. d) Un-plasticized PVC ‘Class 4’ pipes conforming to IS 4985 and HDPE pipes conforming to IS 4984 are permitted for use in Light Hazard Occupancies for underground mains only.7.2 Underground Mains shall be laid such that the top of the pipe is not less than onemetre below the ground level and masonry or equivalent supports shall be provided atregular intervals. In case of poor soil conditions, it may be necessary to providecontinuous masonry or equivalent supports.7.3 Mains above ground shall be medium grade wrought or mild steel (galvanised or un-galvanised) conforming to IS 1239 or IS 3589 with welded, threaded or flanged joints,adequately supported at regular intervals on masonry or RCC stools or pedestals (noton pipe racks).The spacing of supports shall be 3.5 m for 80, 100 and 125 mm diameter pipes, 5 m for150, 200 and 250 mm diameter pipes and 7 m for above 250 mm diameter pipes.Pipes shall be run at least 6 m away from the face of the buildings and open storageareas in case of Light and Ordinary Hazard Occupancies and 15 m. in case of HighHazard OccupanciesIn case of practical difficulties in maintaining the stipulated distance from the face of thebuilding in case of above ground over head mains, warranted under demandingcircumstances in specific areas, for example between Boiler House and TG Buildingand between Transformer and T.G. Building in thermal power plants, the same may bepermitted provided the mains installed in such areas form part of sub-ring only.7.4 Mains shall not be laid under buildings. Where, however, circumstances necessitatelaying of mains under buildings, the portion of mains falling under the buildings shall belaid in masonry trenches with removable covers and cut-off valves shall be provided at 32
    • points of entry and exit. As far as possible, mains shall not be laid under large openstorages, railroads and roads carrying heavy traffic.7.5 The mains shall not traverse ground that is not under the control of the owner of theinstallation nor under a public roadway.7.6 The system shall be capable of withstanding for two hours a pressure equivalent to150 % of the maximum working pressure. While hydro-testing. Inclusion of cut-offvalves in the mains to be tested should be avoided.7.7 All boltholes in flanges shall be drilled. The drilling of each flange shall be inaccordance with the relevant Indian Standards.7.8 Flanges shall be faced and have jointing of rubber insertion or asbestos compound.7.9 Fittings installed underground shall be of cast iron `heavy grade conforming toIS 1538 whereas those installed above ground shall normally be of `Medium gradewrought steel or mild steel conforming to IS 1239 Part 2 or malleable iron fittingsconforming to IS 1879.7.10 Mild steel stand post may be accepted even in cases where underground mainsare of Cast iron.7.11 It is recommended to provide semi-circular RCC pipes for cast iron pipes at roadcrossings.7.12 Mains shall be laid in rings (excepting as specified to NOTE 4 below) and the sizeof the initial pipe shall not, in any case, be less than the internal diameter of the deliveryoutlet of the pump. 33
    • TABLE 3 (FOR LIGHT HAZARD OCCUPANCIES)NO. OF HYDRANTS IN SIZE OF MAINS % AGE OF ALLTHE WHOLE SYSTEM MAINS INCLUDING TERMINAL MAINS (mm) AND RISERS * 1 to 20 100 100 % 21 to 55 125 45 % 110 55 % 56 to 100 125 60 % 100 40 % TABLE 3 A (FOR ORDINARY HAZARD OCCUPANCIES)NO. OF HYDRANTS SIZE OF MAINS % AGE OF ALLIN THE WHOLE MAINS INCLUDINGSYSTEM TERMINAL MAINS (mm) AND RISERS *01 to 05 100 100 %06 to 20 125 40 % 100 60 %21 to 55 150 20 % 125 35 % 100 45 %56 to 100 150 25 % 125 40 % 100 35 %Exceeding 100 See NOTE– 3 (a) and 3 (b) hereunder * 80 mm diameter terminal and/or riser mains shall be taken as 100 mm diameter mains for this purpose. 34
    • NOTES -1) In calculating the number of hydrants in the system, a double headed hydrant shall be counted as two, a fixed monitor of 63 mm size having nozzle bore of 32 mm shall be counted as three, a fixed monitor of 75 mm size having nozzle bore of 38 mm shall be counted as four and a fixed monitor of 100 mm size having nozzle bore of 45 mm as six hydrant points. In case of risks, where double headed hydrants are used throughout the system, a double headed hydrant may be regarded as a single hydrant only. For High Hazard occupancies, the hydrant system shall be hydraulically so designed that when half the aggregate pumping capacity is being discharged at the farthest/hydraulically most remote point and the other half in the most vulnerable area enroute, a minimum running pressure of 5.25 kg/ cm2is available at the former point and the rate of flow of water does not exceed 5 m/s anywhere in the system. In case the hydraulically most remote point happens to be ordinary hazard risk, pressure requirement at this point can be restricted to 3.5 kg/cm2. However pressure available at the high hazard area immediately preceding the ordinary/light hazard area must be 5.25 kg/ cm2. In case the hydraulically most remote point is the area fed by other systems tapped from hydrant system, the entire aggregate pumping capacity shall be considered as being discharged at this point at a minimum running pressure of 5.25 kg/cm2 and the hydrant system shall be so designed that the rate of flow of water does not exceed 5 m/s anywhere in the system.2) For Light and Ordinary Hazard Occupancies having more than 55 points, either of the following methods may be followed: a) The hydrant service be constituted of single or more than one inter- connected hydrant systems, each with its individual pump set according to Table 2 and water supplies equivalent to the aggregate requirements of the number of pump sets installed. b) A single hydrant system may be installed provided, it is hydraulically designed (where the highest hydrant is located more than 20 m above ground level, pre calculated systems shall not be accepted) as per the parameters indicated in NOTE 2 above, except that minimum running pressure shall be 3.5 kg/ cm2. (minimum diameter of the pipe used in the ring mains shall however not be less than 100 mm). 35
    • 3) In the case of riser mains in storeyed buildings and in locations where it is not feasible to lay a ring main, a terminal main may be provided, but in no case shall the number of hydrants on such terminal mains exceed 5. A terminal main of 80 mm diameter shall not feed more than one hydrant that having a diameter of 100 mm shall not feed more than two hydrants that having a diameter of 125 mm shall not feed more than three hydrants and a main of 150 mm shall not feed more than five hydrants. 4) Cut-off (Isolating) valves are necessary to obtain the best possible pressure at the seat of fire as they enable a damaged portion of the installation to be isolated whilst full pressure is available throughout the remainder. These valves are distributed according to the general layout of the installation. 5) Cut-off valves shall conform to IS 780 / IS 14846, Class 2 . 6) In case of system having working pressure in excess of 7 kg/cm2 PN- 1.6 rating would be necessary for valves conforming to IS 780 and Class 3 for those conforming to IS 14846. Cast Steel valves of class 150 are, however, acceptable irrespective of the working pressure of the system. 7) Other types of valves like rising spindle valves may also be used. 8) Butterfly valves can be accepted subject to the condition that the valves of diameter exceeding 150 mm shall necessary be of gear operated.7.13 All cut-off valves shall be of the right-hand type and enclosed in properlyconstructed surface box, at least 1 m2 in area so as to allow for broken joints beingeasily remade. The top of the surface box shall be 80 mm above ground level, exceptwhere it is locate on a road. Valve wheels shall have an arrowhead engraved or castthereon showing direction for turning `open and `close.7.14 It is recommended that the position of the surface box be indicated by an iron platepainted `fire red with distinct lettering. Such plates shall also show the `open and`close direction as cast or indicated on the valves and the serial no. of the sluice valve.7.15 In case of installations in earthquake prone zones, flexible couplings shall be usedfor jointing purposes.8 HOSE PIPES8.1 In the case of yard hydrants, hose pipes and nozzles shall be installed either incentral hose stations which shall be of the type which enables the condition andquantity of hose, nozzles, etc. to be checked over at a glance and ensures that otheruseful equipment is ready at hand in the event of a fire or near each hydrant in glass 36
    • fronted hose boxes of suitable design. In case of hydrants on upper floors or internalhydrants, hosepipes and nozzles shall necessarily be installed near each hydrant inglass fronted hose boxes of suitable design. NOTE - Locations and number of hose stations will depend upon several factors such as fire loads, accessibility and positions of watch posts. Prior approval of the Committee shall, therefore, be obtained regarding locations of the hose stations before they are constructed.8.2 Requirements of Hose Pipes8.2.1 If hose is kept in central hose stations, for each of the first ten hydrants in thecompound of the premises (a double headed hydrant counting as two except wherethey are provided as a standard practice throughout the system), two lengths of hose15 m each and an additional 15 m length for each hydrant in excess of ten, shall beprovided. NOTE - In case of system having more than 55 hydrant outlets, the total number of hose lengths required may be limited to 55 plus 20 percent of the number of hydrant outlets in excess of 55. Where a fire engine is maintained on the premises manned by a whole time fire brigade, the number of hose, pipes required (including those on the engine) would be 55 plus 10 percent of the number of outlets in excess of If hose is kept in hose boxes alongside hydrants, each box shall contain twolengths of 15 m each.8.2.3 For use with each hydrant on staircase landing or with each internal hydrant, twolengths of hose 7.5 m shall be provided. In case of basement hydrants, two lengths ofhose 15 m shall be provided.8.3 Requirement of Hose Pipes in T.G. Hall/Boiller House/Mill Bay in ThermalPower PlantsFor use with each hydrant on staircase landing two lengths of hoses 15 m each and anozzle with attached branch pipe shall be provided in hose box alongside each landingvalve.8.4 All hoses shall be of 63 mm diameter of either of the following types: a) Unlined flax canvas complying with Indian Standard IS 4927. b) Rubber lined woven-jacketed complying with Type A (Reinforced Rubber lined) of Indian Standards IS 636. c) Controlled Percolation type complying with Indian Standards IS 8423. 37
    • d) Ordinary rubber lined woven-jacketed hose complying with the specification of Type B of Indian Standards IS 636 may be permitted to be used in lieu of the above upto a maximum of 50 % of the total hose requirements of the hydrant system.8.5 All couplings shall be of the instantaneous spring-lock type and the nozzles shall beof not less than 16 mm in diameter, nor more than 25 mm in diameter except in case ofhigh hazard occupancies where the maximum nozzle diameter may be 32 mm. Allcouplings, branch pipes and nozzles shall be of gunmetal or stainless steel and shallotherwise comply with IS 903.8.6 Hose shall be attached to the coupling in such a way that each half of the couplingshall have two 5 mm diameter holes drilled in the tail. The hose shall be first fixed to thetail of the coupling with copper rivets then served or bound with 1.5 mm galvanised mildsteel or copper wire for a length of 50 mm which shall extend to the outer ends of thegrooving on the coupling tail. Over the galvanised mild steel or copper wire a leather orequally protective band shall be bound with four strands of 1.12 mm galvanised mildsteel or copper wire at each end of the band. The protective band shall be carriedbeyond the tail of the coupling to prevent leaking. Copper wire, if used, shall besoftened before being used. Couplings attached to the hose otherwise than by copperrivets shall not be accepted.8.7 Spare hose to the extent of 10 percent of the above requirements, with a minimumquantity of 30 m shall be always kept readily available. Such spare hose shall be in15 m lengths, readily attached to couplings.8.8 It is recommended that a system of marking and numbering hose be arranged sothat the various lengths are easily recognisable.8.9 In central hose stations and hose boxes a tin containing a set of spare rubber ringspacked in French chalk shall be kept.8.10 Central hose stations and hose boxes shall be so arranged that hose is notexposed to the sunrays.8.11 All central hose stations or hose boxes, when provided with locks shall have onemaster key which shall be available either at the main gate or any other prominent andeasily accessible location known to the fire fighting personnel.9 REQUIREMENTS OF NOZZLES9.1 The number of nozzles to be provided shall be equivalent to half the number of hosepipes installed on the premises.9.2 In locations where a jet of water directed from a normal type nozzle is likely to causemore harm than good or where a gentle spray of water is essential for the 38
    • extinguishment of a fire, a fog type or a spray type of nozzle complying with IS 2871shall be used.9.3 Spare nozzles to the extent of 10 % of the above requirements, with a minimum oftwo, shall always be kept readily available.10 FOAM COMPOUNDFoam systems shall conform to IS 12835. The stock of foam compound to bemaintained shall be equivalent to at least two times the requirement of the tank needingmaximum quantity of foam. Foam Compound shall be chemically neutral (PH 6.5to 7.5).11 FIRE FIGHTING PERSONNEL11.1 A squad consisting of watch and ward personnel, fire pump men and departmentalsupervisors and/or operatives trained in the operation of the fire service shall bemaintained on the premises round the clock. The number of personnel constituting thesquad shall necessarily depend upon the size of the risk, but in no case shall less thaneight trained persons be available at any time during the day or night. Minimum numberof trained persons required may be further reduced to six in case of automaticpressurised hydrant systems.11.2 Squad leaders shall be trained by government recognised institution and theirusefulness would be considerably enhanced if they reside on the premises.11.3 Squad personnel shall be provided with clothing and equipment including helmetsconfirming to IS 2745 or IS 2925, belts and boots preferably gun boots.11.4 A muster roll showing the duties allocated to each member of the brigade shall beprepared and copies supplied to each squad leader as well as pasted in convenientplaces throughout the premises, so as to be quickly available for reference in case ofemergency.11.5 Practice drills shall take place weekly and wet drills shall be carried out at intervalsof not more than a fort-night11.6 During wet drills, hydrants (including those of upper floors), hose pipes andnozzles, shall be taken into use in rotation, so that the efficacy of these applianceswould be automatically checked and any defects observed, set right.11.7 A Register counter signed by fire marshal and works Manager shall be keptshowing Information such as names and designations of the persons attending the drill,type of drill dry or wet, serial nos of hydrants operated, duration of operation of pumps,defects observed if any, date purchased, date brought into use, date cut (if reduced inlength), is useful. 39
    • 11.8 The services of the pump man could be profitably utilised for the maintenance ofall fire fighting appliances (including hand appliances. He shall also be thoroughlyconversant with the locations of all appliances, particularly of hydrant cut-off valves sothat in an eventuality he can be of assistance to the factory’s fire brigade or the Town’sfire brigade.11.9 Keys of all doors in the factory premises shall always be available at the maingate.11.10 It is recommended that fire pump room(s) and the main gate(s) of all factorypremises be connected to all manufacturing sections through the internal telephonesystem. Telephones interlinked to this system may also be put up in proper cubicles atconvenient locations near godown ranges and other strategic points. This would effectsaving of valuable time in an emergency to alert the fire fighting personnel and thepump man.12 MAINTENANCE12.1 Pumps12.1.1 General12.1.1.1 A trained pump man shall be available on all shifts and at all hours of the dayand night to operate the pumps as and when required. Pump sets shall be run for at least five minutes every day. The level of water in the priming tank shall be checked daily to ensure that thefoot valve of the pump is not leaking. All pump glands shall be maintained in efficient working condition and thepacking renewed as required to maintain efficiency. Suction and delivery valves shall be examined once every six months,particularly where sand or other objectionable matter is liable to be drawn through thepump suction. All working parts shall be kept clean and lightly oiled. Any necessary repairsshall be put in hand and carried out immediately.12.1.2 Electrically Driven Pumps12.1.2.1 The bearing grease cup shall be checked once every week and refilled withfresh grease, if necessary. Starter contacts shall be cleaned once every week. 40
    • Insulation resistance of pump motor circuit shall be examined once every sixmonths and record of results shall be maintained.12.2 Mains12.2.1 Hydrant mains shall be tested once a fortnight with a pump delivering at itsmaximum pressure, with all hydrant valves closed and, thereafter, a running test withtwo or more hose lines each 30 m long operating shall be carried out.12.2.2 All cut-off valves shall be operated and oiled, if necessary, once a month.12.2.3 Cut-off valves shall be thoroughly overhauled annually to remove sludge andother foreign matter collected in the valve seating.12.3 Hydrants12.3.1 All hydrants shall be examined systematically once a week to ensure that valvesand spring catches are maintained in good condition and all brass parts are polished.12.3.2 Spare washers shall be kept for hydrant valve seats.12.3.3 It is recommended that the painting of standpoints be carried out annually.12.4 Hose Pipes and Nozzles12.4.1 All hose boxes/hose stations shall be inspected externally once every week toensure that the equipment installed therein is intact. Further, the hose boxes/hosestations shall be cleaned internally and externally once a month.12.4.2 When the hose gets worn out at the tail end of the coupling(s), it is permissible tocut the end(s) of the hose. However should the lengths of the hose after cutting(s) fallbelow 90 percent of its original, the hose shall be discarded.12.4.3 A Hose Register shall be kept showing Information such as date purchased, datebrought into use, date cut (if reduced in length), is useful.12.4.4 Any hose becoming inefficient through use, neglect or from any other cause,shall be discarded.12.4.5 Fire protection hose shall not be used for purposes other than fire protection anddrill. Cheap hose for watering paths, washing out or filling boilers, etc. shall not bemixed with fire protection hose but kept in an entirely separate place.12.4.6 It is recommended that hose couplings and branch pipes be polished once afortnight. 41
    • 12.4.7 After use, hose should be thoroughly washed in clean water and then thoroughlydried. A rack or some similar contrivance atleast 10 m high should be provided so that,after cleaning, hose may be suspended to drain and dry evenly. This is to be done inthe shade and not in the sunshine so that the hose is evenly dried inside and out. Careshould be exercised that it is not removed until it is thoroughly dry in all places. Thehose should be then thoroughly brushed with a hard bristle or wire brush, and re-rolled,care being taken to choose a dry and clean place whereon to roll it. Hose should thenbe replaced in the boxes or hose stations. Care should be taken after washing that thehose does not touch the ground, where it might be soiled. Hose should be rolled upevenly and carefully, the female or spring coupling end being in the centre. In thismanner the spring clips, when grasped one in each hand, form a `reel’ and the hosecan be quickly run out in the event of fire. Or alternatively the hose should be doubled inthe centre of its length and rolled up evenly from the fold. Both the Male and Femalecouplings will then be on the outside of the roll. This permits the nozzle being attachedto the hose while being stored in readiness for use, and the hose runs out withouttwisting.13 MEASURES TO BE TAKEN WHERE THE INSTALLATION IS FOR ANY REASONTEMPORARILY INOPERATIVE13.1 If any component of the hydrant system is to be replaced for any reasonwhatsoever, the entire system shall not be rendered inoperative but the particularsection only shall be isolated by closing the necessary cut-off valves. If, however, it isnot possible to complete the replacement before nightfall, the cut-off valves shall not beleft closed overnight. Instead, blank flanges shall be provided at the point where thecomponent has been removed so that the entire system, other than the component,which has been removed, would remain operative through the night.13.2 Only one compartment of the reservoir shall be emptied out at a time of cleaning orrepair work.13.3 If the foot valve of the suction line is removed for cleaning/repairs, it shall, as far aspracticable, be replaced before nightfall.13.4 If the pump is expected to be inoperative for more than 72 hours, every effort shallbe made to connect the service water supply to the hydrant system for the duration thepump is inoperative.13.5 If the hydrant service is to be extended, the extended portion shall be first laid and,thereafter, the connection between the existing system and the extension shall becarried out expeditiously, so that the entire system is not left inoperative overnight 42
    • Annexe A (List of referred Indian Standards) IS Number Title 5:2007 Colours for ready mixed paints and enamels (Fifth Revision) 636:1988 Non percolating flexible fire fighting delivery hose (Third revision) 780:1984 Specification for Sluice valves for water works purposes(50mm to 300mm size) (sixth revision) 903:1993 Specification for fire hose delivery couplings, branch pipe, nozzles and nozzle spanner (Fourth revision) 908:1975 Specification for Fire Hydrant Stand post type (second revision) 909:1992 Specification for underground fire hydrant Sluice valve type (Third revision)1239 Part 1:2004 Steel tubes, tubulars and other wrought steel fittings – Specification : Part 1 Steel Tubes (Sixth Revision)1239 Part 2:1992 Mild steel tubes, tubulars and other wrought steel fittings Part 2 Mild steel tubulars and other wrought steel pipe fittings (Fourth revision) 1536:2001 Centrifugally cast (spun) iron pressure pipes for water gas and sewage (Fourth revision) 1537:1976 Vertically cast iron pressure pipes for water, gas and sewage (First revision) 1538:1993 Cast iron fittings for pressure pipes for water, gas and sewage (Third revision) 1641: 1988 Code of practice for fire safety of buildings(general): general principles of fire grading and classification (First revision) 2745:1983 Specification for Non-metal helmet for firemen and civil defence personnel (Second revision) 2871:1983 Specification for branch pipe, universal for fire fighting purposes (First Revision) 43
    • 3844:1989 Code of practice for installation and maintenance of internal fire hydrants and hose reels on premises (First revision)3589:2001 Steel pipes for water and sewage (168.3 to 2 540mm outside diameter) – Specification (Third revision) 3950:1979 Specification for Surface boxes for sluice valves (first revision)4927:1992 Unlined flax canvas hose for fire fighting – Specification (First revision)4984:1995 Specification for high density polyethylene pipes for potable water supplies (Fourth revision)4985:2000 Unplasticized PVC Pipes for potable water supplies – Specification (Third revision)5290:1993 Specification for landing valves (Third revision) 5822:1994 Code of practice for laying of electrically welded steel pipes for water supply ( Second revision) 7181:1986 Horizontally cast iron double flanged pipes for water, gas and sewage (First revision)8329:2000 Centrifugally cast (spun) ductile iron pressure pipes for water, gas and sewage (Third revision)8423:1994 Specification for controlled percolating hose for fire fighting (First revision)10221:1982 Code of practice for coating and wrapping of underground mild steel pipelines12469:1988 Specification for Pumps for fire fighting system12835:1989 Code of practice for design and installation of fixed fire extinguishing system :Part 1 Low expansion foam14846:2000 Sluice valves for water works purposes (50 to 1200 mm size) - Specification15325:2003 Design and installation of fixed automatic high and medium velocity water spray system – Code of Practice 44
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