इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 14851 (2000, Reaffirmed 2010): Maintenance of Fire Hose--Code of Practice. ICS 13.220.10 : 77.151 “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 14851 : 2000 ct m\Yf ct 3Tft;:r ~ IJ =j 'i ~ ~ ~a1UT cPI ~ x:f~ Indian Standard I\1AINTENANCE OF FIRE HOSE - CODE OF PRACTICE ICS 13.220.10; 77.151 © BIS 2000 BUREAU OF INDIAN STANDARDS MANAK BHA V AN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 Octoher 2000 Price Croup 1 Fire Fighting Sectional Committee, CEO 22 FORE'vVORD This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Fire Fighting Sectional COlllmittee had been approved by the Civil Engineering Division Council. Fire hose is a vital link between the water supply and nozzles used to project streams on the fire to extinguish it. Hose III list be rugged and dependable, capable of carrying water under substantial pressure and yet flexible and easy to handle. Selection of the proper grades and types of hose and maintenance to assure maximum lIsefullife or are concern to the fire services. Provision of unsuitable types or improper maintenance of hoses may lead to failure in tackling the fire effectively, thus involving greater loss of life and property. This standard has, therefore, been prepared for giving guidance regarding proper selection and maintenance of fire hoses so that such hoses will fUllction at all times as intended throughout their usefllllife. In the formulation of this standard. due weigbtage has been given to international co-ordination among the c: standards and practices prevailing in different countries. Assistance has been derived from ASTM 39-86 'S tandard lest methods for comprcssi ve strength of cylindrical concrete specimen'. IS 14851 : 2000 Indian Standard MAINTENANCE OF FIRE HOSE _. CODE OF PRACTICE I SCOPE Normal fire hoses, rubber lined or rubberized fabric lined, woven-jacketed with or without elasto This standard lays down recommendation for selec meric coating/covering for application under normal tion, usage and maintenance of fire hoses. conditions. 2 REFERENCES 4.1.1.1 Pelfomwnce parameters ulld applicatiolls The Indian Standards listed below contain provision The minimum proof pressure specified for this quality which, through reference in this text, constitute pro is 21 kg/cm2. It is recommended for rugged use by visions of this standard. At the time of publication, civil and defence personnel. the editions indicated were valid. All standards are Abrasion resistance (durability factor) and Heat subject to revision and parties to agreement based on Resistance (reliability factor) of this house is more this standard arc encouraged to investigate the possi than 4 times as compared to that of ordinary rubber bility of applying the most recent editions of the lined hose as per IS 636, Type). standards given below: 4.1.2 Impregnated Covered Fire Hose having Unified [S No. Title Lining and Cover as per Type B of IS 636 or Indian 636 : 1988 Non-percolating flexible fire fighting Standard for Higher Pressure. delivery hose (third revision) 4927 : 1992 Unlined flax canvas hose for fire Hose to which an elastomeric outer coating or covering fighting (first revision) has been applied or incorporated as reinforcement 8423 : 1994 Controlled percolating hose for fire to give the hoses very low absorption of liquids, such fighting (first revision) as oils, greases, acids and alkalies, etc, and has high resistance to abrasion and direct heat. 3 GENERAL 4.1.2.1 Pel/ormance parameters and applications 3.1 The fire hoses form a vital part of the whole system a f fire protection and should receive consideration for The minimum proof pressure specified for this quality provision at the design stage. The reliability and the is same as that of Type A, that is, 2 kgf/cm2 but its J length of life of hose mainly depend on three factors: Abrasion Resistance (durability factor) is twice as that of Type A and Heat Resistance (Reliability Factor) is a) Type of fire hose for the intended use. half times more than that of Type A quality. This b) Handling of hose at fires. quality is recommended to be used undcr more severe c) Maintenance of hose after fires. conditions particularly against fire hazards arising out ofref:neries, Chemical Plants and High-rise buildings 3.2 Under average field conditions and with proper in metropolitan cities. care, hose should be serviceable for minimum three years unless subject to damage in use or training. There 4.2 Percolating Type Hose is no reason for discarding the hose at the end of three years if it is in good condition and possesses the 4.2.1 Unlined Flax Canvas Fire Hose as per IS 4927. relevant requirement. 4.2.1.1 The minimum proof pressure specified is 21 kg/cm2 to ensure that this hose is suitable for rugged 4 TYPE OF FIRE HOSE use under extreme hot conditions. Being unlined and Basically, two types of fire hoses are manufactured as made of strongest flax fibre, it can withstand hot water per usage: or sea water and has the longest shelf life amongst all types of fire hoses. ]n the event of emergency, it can I) Non-percolating, and also be used to carry drinking water to remote areas 2) Percolating fire hose. without any danger of contamination. 4.1 :\'oll-percolating Type Hose 4.2.2 Controlled Percolating Fire I-lose having Inner Coating as per IS 8423. 4.1.1 Rubber Lined or Rubberized Fabrie Lined Fire 4.2.2.1 Peliomzance parameters and applications J lusc as per Type A of IS 636 or Indian Standard for II igher Pressure Hoses. Under Controlled Pe:'colation, the minimum rroof IS 14S51 : 200n prcssurc specified is 21 kgfiem2, When subjected to the hose supplying the relay. pressurc, the inncr coating of the jacket develops holes to ensure controlled percolation, It is recommended 6 MAINTENANCE OF HOSE AFTER FIRES lu subjcct cach hosc length to service test al regular 6.1 When hose is returned back, it should be laid Ollt intervals, where it can be brushed and washed as required, Machines may be used for this purpose. It is important 5 HANDLING OF HOSE AT FIRE to remove dirt and other foreign material from the 5.1 When used for fighting fires, fire hose is subjected jackets. A scrub brush and mild soap and water to severe strains, pressure surges and mechanical may be used but frequently a small hose is used for injury, Care should be takcn to lay hose so that injury washdown purposes. Clean dry hose should only be will not result from contact '.vith sharp or rough objects loaded on the appliance to replace the hose that has at fires as Car as possible, Too often hose is treated as been used. though it were a rugged water pipe, instead ofa flexible 6.2 After cleaning to remove grime and contamillants, lubc prutected only by the fabric jacket Vehicles should hose should be thoroughly dried, Hose hung in hose never be driven over hose lines, Where it is necessary towers or laid on racks for drying is the best method 1'01' fire department vehicles to cross, hose ramps! for drying hose. Where drying cabinets are used, bridges should be used where possible; however it is sufficient number should be provided to properly desirable to detour all non emergency traffic from service the hose. When hose has been thoroughly dried, the fire area, When it is necessary to hoist lines, it should be removed from the drying equipment, rolled mechanical injury can be avoided and the task made for storage and placed on storage racks ready for use. easier by lise of hose rollers, \Vhen hose lines are extended up ladders, the hose should be supported by 6.3 For hoses marked as per IS 636, Type B or oil placing hose rope tools, so as to take the strain off resistant as per Indian Standard for higher pressure couplings. hoses, the hose does not need to be dried as this is a covered hose. 5.2 Pressure surges are the principal cause of damnge to lIre hose. Shut off nozzles should be opened and 7 INSPECT} ON closed slowly because sudden closing of nozzles can 7.1 It is necessary for the Fire Service Management to caLlse severe pressure surges of shock waves which keep accurate data of the performance of each hose are unpredictable and can be extremely damaging both length to keep the hose fighting fit Service tests should to hose and to pumping appliances. Pressure relief be conducted on each length as per the service schedule devices on pumping engines should always be used to or at least annually. Test should also be carried out control sudden increase in pressure. During pump operatiun, it is preferable to reduce pressure at the after repairs, or any time the hose has had hard US3\2C and its condition is suspect. ~ pllmp \V'hen signalled to do so before shutting nozzles hec,1use this avoids pressure surges which may occur 7.2 Record for hose on racks, on reels or in enclosures e\el1 when the engine governor or relief valve is may be kept at the hose location or at a central location fUllctioning properly. of the premises where the hose is located. Fire Depart ment records include a complete hose inventory, and 5.3 The usual required relief valves or pressure a record of use of hose by the individual fire fighting governors are designed to protect the discharge side units to which it is assigned. Upon delivery and of the pump. When water is relayed from a pump at a acceptance, each length of hose is given an identi water source to a pump at a fire, special precautions fication number. This is used to record its history should be taken to prevent damaging pressure surges. I r not provided as part of the pumping apparatus, some throughout its service life, and ultimately the reason the hose was condemned and removed from service form of relay relief valve should be attached to the can also be seen, Such records enable fire department inlet or slIction side of the pump near the fire to which administrators to determine the cost effectivcness of the relay hose line is to be attached. The lower the the various sizes and types of hose in service, the work setting of this reliefvalve on the inlet of the receiving to which hose is subjected, service tests, repairs and pump, the greater the protection to the pump and to other pertinent data. I f hose fails within the guarantee period, this should be indicated prominently, 2