is 13694 (1993): code of practice for fire safety in iron

15
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. इंटरनेट मानक !ान $ एक न’ भारत का +नम-णSatyanarayan Gangaram Pitroda “Invent a New India Using Knowledge” प0रा1 को छोड न’ 5 तरफJawaharlal Nehru “Step Out From the Old to the New” जान1 का अ+धकार, जी1 का अ+धकारMazdoor Kisan Shakti Sangathan “The Right to Information, The Right to Live” !ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता ह Bharthari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 13694 (1993): Code of practice for fire safety in iron and steel industries [CED 36: Fire Safety]

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Page 1: IS 13694 (1993): Code of practice for fire safety in iron

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.

इंटरनेट मानक

“!ान $ एक न' भारत का +नम-ण”Satyanarayan Gangaram Pitroda

“Invent a New India Using Knowledge”

“प0रा1 को छोड न' 5 तरफ”Jawaharlal Nehru

“Step Out From the Old to the New”

“जान1 का अ+धकार, जी1 का अ+धकार”Mazdoor Kisan Shakti Sangathan

“The Right to Information, The Right to Live”

“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता है”Bhartṛhari—Nītiśatakam

“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 13694 (1993): Code of practice for fire safety in ironand steel industries [CED 36: Fire Safety]

Page 2: IS 13694 (1993): Code of practice for fire safety in iron
Page 3: IS 13694 (1993): Code of practice for fire safety in iron
Page 4: IS 13694 (1993): Code of practice for fire safety in iron

IS 13694 : 1993Reaffirmed 2007

-

Indian Standard

FIRE SAFETY IN IRON AND STEELINDUSTRIES — CODE OF PRACTICE

UDC 699.81 : 725.42 : 669

BIS 1993

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

April 1993

©

Price Group 4

Page 5: IS 13694 (1993): Code of practice for fire safety in iron

AMENDMENT NO. 1 MAY 2005TO

IS 13694: 1993 FIRE SAFETY IN IRON ANDSTEEI~ INDUSTRIES - CODE OF PRACTICE

( Page5, clause t 1.2.3 ) - Substitute the following for the existing clause:

'Clean Agents System - These systems are alternate to halon systems.'

(CED 36)Reprography Unit, BIS,NewDelhi, India

Page 6: IS 13694 (1993): Code of practice for fire safety in iron

Fire Safety Sectional Committee, CED36

FOREWORD

This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by .the Fire Safety Sectional Committee bad been approved by the Civil Engineering Division Council.Irrespective of size. all iron Bud steel industries have one thing in common, that is, all have­ample combustible materials in the form of coal, fuel oil. combustible gasel, inflammable liquids..book records, waste, jute etc. When any of the material catch fire, these materials burn andcontribute to the growth of fire.

Fire in the iron and steel industries will jeopardise the lives of the workers and the equipmentand destroy the total or partial equipment, which will represent a national wealth. Conse­quential Joss due to iron and steel industry fire may Dot be assessed in terms of money. The losse..are irrepairable.

Iron and Steel industries of all types are expanding at an enormous rate. Increase in demand foriron and steel, official policy 811d increase in usage in various sectors makes this process inevitable.The consumption of steel per-capita indicates the national growth and prosperity. Since the­development of new iron BDd steel industries takes several years, the protection taken to safeguardthe industry play a vital role and be done in the planning stages of the industry and in theoperating stage of the existing industry. Unless the industry is planned to meet the futuristicrequirements it may result in haphazard growth, additions and alterations, later thereby adding to-the fire hazard.

In all cases, it is of utmost importance that due emphasis should be laid, at the planning stage,to analyse the fire hazard and vulnerabilities embodied in the various producing units of theiron and steel industry and its operations, when it is on going, and to plan and implement suitable­measures for mitigating the hazards and vulnerabilities.

While full compliance with the acceptable building and fire safety codes may ensure a reasonablelevel of public safety in the existing construction, it should be realised tbat reliance upon the'codes may not provide adequate protection for high value equipment and other associated!instruments and adequate measures as needed be assured.

For the purpose of deciding whether a particular requirement of this standard is complied with,the final value, observed or calculated. expressing the result of a test or analysis, sball be rounded.off in accordance with,IS 2: 1960 Rules for rounding off numerical values ("vised )'. The numberof significant place. ·'retained in the rounded off value should be the same as that of the spccific4value in this standard.

Page 7: IS 13694 (1993): Code of practice for fire safety in iron

IS 136'4: 1993

Indian Standard

FIRE SAFETY IN IRON AND STEELINDUSTRIES - CODE OF PRACTICE

~t SCOPE

·~I.I This code covers the fire safety and fireprotection measures of iron and steel industries

-required after construction of structures.

1.2 This code does not cover fire safety aspects,of iron and steel industry in detail but will.generally cover the major hazards and the-procedures to be followed.

2 REFERENCES

-The Indian Standards listed in Annex A arenecessary adjuncts to this standard.

.3 GENERAL

-3.1 Fire safety of iron and steel industry isbased on prevention/early detection/suppression

· and the knowledge of the personnel at handto cope with a possible fire emergency. Thisbasic consideration for the design of iron and

·steel industry considering the following factors·at the planning stage have been considered:

a) The basic structure of each building, itslayout. compartmentalisation and type ofconstruction, whether independent orpart of other building with/withoutsegregation;

b) Electrical installations, instrumentation.over head cranes, including internal andexternal lighting;

·c) Heating/ventilation and air-conditioningsystem;

-d) The number of workers present in eachinstallation during peak hours;

-e) Storage of fuel oils, oxygen. Ammonia,coal sulphur etc;

f) Various common facilities, distributionand consumption points;

.8) The number and location of exits andescapes and provision of self closing firecheck doors of main exit/escape;

'h) The provision of primary fire fightingfacilities to quench or restrain the spreadof fire till the main fire fighting facilitiesreach;

j) Provision of fixed systems like automaticfire detection-cum alarm. automatic firesuppression system and semi-automaticpressurised hydrant system; and

:~k) The vulnerabilities of the fire incidenceand protection for the equipment andman power.

3.1 The iron and steel industry basicallyconsists or the melting and finishing units.

3.2.1 The melting units in a conventional systemwill be a blast furnace, the open hearth furnace,liquid oxygen furnace. The ingradients are thecoke. coke oven gas (carbon monoxide) fueloil, tar. pitch, iron ore, lime stone ore, carbon,manganese etc. The finishing units are the hotand cold mills where the finished products aremanufactured. The ingradients are steel slabs,billets, blooms, coke oven gas, fuel oil, etc.

3.2.2 Finishing equipment consists mainly ofreheating furnances, hot mills, cold mills etc.

3.3 The fire rating of the equipments likemotors, generators and others should be to suitthe surrounding conditions and never less thanclass A insulation.

4 BLASTFURNACE

4.1 A blast furnace shall be a completely fireresisting enclosure. having an internal capacityvarying on the technological requirements whichis used exclusively for the manufacture of pigiron. It should be so equipped, maintainedand supervised that the possibilities of an out­break of fire outside the fumance should bereduced to the minimum possible.

4.2 Depending on the total fire load and theexpected security of fire outside the furnace, thefire resisting rating may not be less than 2hours.

4.3 The blast furnace shall have adequateclearance on all sides so that when exposed to afire, the temperature on the ·external face of thebuilding and immediate surrounding does notexceed 500°C and the electrical instrumentationdo not get damaged.

4.4 The structures and the equipment shouldbe suitably insulated from the direct heat andshould not be peeled or damaged at any pointexcept the hot metal runners.

".5 The control room and the other equipmentshould have the same resistance of the furnacearea.

4.6 Combustible materials like cotton waste,oxygen cylinders. lubricants, inflammableliquids should not be permitted in the vicinityof furnace.

4.7 When small quantities of lubricants andmaintenance materials are to be stored, theyshould be properly protected and kept underinsulated atmosphere to prevent any occurrenceof fire.

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~'IS 13694: 1993

7.1 A soaking pit or a reheating furnace,annealing furnace shall be completely fireresisting enclosure baving an internal capacityto suit the technological requirements whichare exclusively used for the manufacture offinished steel products. It should be soequipped, maintained and supervised that thepossibilities of an outbreak of fire outside the'furnace should be reduced to the minimumpossible.

7.1 Depending on the total fire load and theexpected security of fire outside the furnaces,the fire resisting rate may not be less than ODe·hour.

7.3 The reheating furnace shall have adequateclearance on all sides so that when exposed toa fire, the temperature on the external face of'the building and immediate surrounding doesnot exceed SOQoC and the electrical instrumen­tation do not get damaged.

7.4 The structures and the control equipmentshould be suitably insulated and cooled with,

'.2 Depending on the total fire load anlt.expected security of fire outside the furnaces,the fire resisting rating may not be less than 2'Phours.

6.3 When exposed to a fire during operation theexternal temperature and that of surroundings.should not exceed 500°C so that the electrical,instrumentation, the structure, the gas main andthe conveyor belts do not get damaged.

6.4 The structure and the control equipmentshould be suitably insulated and cooled fromthe direct heat and should not be peeled ordamaged at any point except the time whilecoke is pushed from the oven.

6.5 The control room, the pusher car, the cokecar, the conveyor belts. the charging car and theelectrical cables should have the same resistanceof the coke ovens.

6.6 Combustible materials like fuel oil, oxygenpipes, lubricants, inflammable liquids are to beprotected suitably. High temperature resistantgraphite grease should be used in the pushercar, coke car, charging car, conveyor idlers toprevent the fire hazard. No cotton waste orinflammable liquids should be stored near thefurnace area.

6.7 Where small quantity of lubricants andmaintenance materials are to be stored theyshould be properly protected and kept underspecial insulated enclosures to prevent anyoccurrence of fire.

6 COKE OVEN

6.1 A coke oven shall be a completely fireresisting enclosure having an internal capacityto suit the technological requirements whichare exclusively for the manufacture of cokefrom metallurgical coal. It should be soequipped, maintained and supervised that thepossibilities of an outbreak of fire outside thecoke oven. Battery limits should be reduced tothe minimum possible.

S.7 When small quantity of lubrication andmaintenance materials are to be stored, theyshould be properly protected and kept underspecial insulated enclosures to prevent anyoccurrence of fire.

5.8 All instrumentation rooms, power controlroom should be properly insulated and exposureof cables or instruments direct to the fire shallbe eliminated.

6.8 All instrumentation rooms, power controlrooms, should be properly insulated and

S.6 Combustible materials like fuel gas, oxygen exposure of cables or instruments direct to firepipes, lubricants, inflammable liquids are to be hazard should be eliminated.protected, suitably either with circulating water,refractory insulation or thermal insulation. 7 REHEATING FURNACENo cotton waste or inflammable liquids, orlubricants should be stored near the furnancearea.

5.1 A steel melting shop shall be a completelyfire resisting enclosures having an internalcapacity to suit the technological requirementswhich are used exclusively for the manufactureof steel. It should be so equipped, maintainedand supervised that the possibilities of an out­break of fire outside the furnance should bereduced to the minimum possible.

5.2 Depending on the total fire load andexpected security of fire outside the furnace,the fire resisting rating may not be less than 2hours.

5.3 The furnace shall have adequate clearanceon all sides so that when exposed to a fire, thetemperature on the external face of the buildingand immediate surrounding does not exceed1 OOO°C and the electrical Instruments do not getdamaged.

S.4 The structures and the control equipmentshould be suitably insulated and cooled withwater circulation from the direct heat andshould not be peeled or damaged at any pointexcept the hot metal handling equipment.

5.5 The control room, the water circulatingsystem, the electrical cable should have the sameresistance of the furnace area.

5 MELTING SHOP

4.8 All instrumentation rooms and powercontrol rooms should be properly insulated andexposure of cables or instruments direct to thefire should be eliminated.

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-,vater circulation from the direct heat andshould not be peeled or damaged at any point

.,except the loading and unloading of the iDiotS.billets with the handling ·equipment.

"1.5 The control room, the cable tunnels, thewater circulating system should have the sameresistabce of the furnace area.

p"., Consummable materials like fuel oil gas,.oxygen pipes, lubricants, inftammable liquids.are to be protected suitably either keeping.away from the furnace or keeping them in aninsulated enclosure. No cotton waste orinflammable liquids or lubricants should be.stored near the furnace.

7.7 All instrumentation rooms, power controlrooms should be properly insulated and-exposure of cables or instruments direct to thefurnace should be eliminated.

·8 HOT MILL

8.1 A blooming mill, slabbing mill, wire rodmill hot strip mill, plate mill, section mill orrail 'and structural mill is a completely openprocess of finishing into the desired technologi-

.cal requirements which are exclusively meantfor the manufacture of finished steel products.It should be so equipped, maintained and.supervised that the possibilities of an outbreakof fire outside the mills or in the cellars shouldbe reduced to the minimum possible.

:8.2 Depending on the total fire load and the·expected security of fire outside the mills thefire resisting rate may not be less than half anhour.

8.3 The hot mill shall have adequate clearanceon all sides so that when exposed to a fire, thetemperature on the external face of thebuilding and immediate surrounding does notexceed 500°C and the electrical instrumentationdo not get damaged.

·8.4 The structures, the oil cellars, the controlequipment, the cable tunnels, the service tunnelsshould be suitably insulated and cooled withwater circulation, cold air blowing from thedirect heat and should not be damaged orinterrupted at any point of time except theshut down.

·8.5' The control room, the oil cellar, a cabletunnel, the service tunnel should have the sameresistance of the mill area.

8.6 Consumable materials like fuel oil gas,oxygen pipes, lubricants, inflammable liquids

.are to be protected suitably either keeping awayfrom the hot working areas or keeping them in

.an insulated enclosures. No cotton waste orinflammable liquids or lubricants should bestored near the mills.

·8.7 All instrumentation rooms, power control.rooms oil cellars should be properly insulated

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IS 13694 : 19'J

and exposure of cables or services direct to therolling area should be laminated•

, PRECAUTIONS

9.1 It is important that certain minimumprecautions given in 9.2 to 9.17 are observedwith a view to preventing an outbreak of fireand loss of equipment and machinery.

9.2 Smoking should be prohibited in the areaof gas mains, fuel storages, fuel gas storages,fuel oil injection areas, coal storages, oil cellars.electrical rooms, oxygen plant Acetylene plantand consuming plants, stores, substores, parkingarea where inflammable materials like wood,paper are stored.

9.3 'No Smoking' signs painted in largereadable letters on a contrasting backgroundshould be displayed conspicuous in one or moreareas. Each sign should have a photograph.Lighting of matches in darkness in the areashould be prohibited. Fluorescent paint shouldbe used to signify the prohibited area.

9.4 Welding by electric or gas should bepermitted in the no smoking areas unless asafety protocol is made taking all precautionarymeasures and should be done under propersupervision.

9.5 Fire check doors should be provided in theoil cellars, control rooms, instrumentationracks, service tunnels to check the spread offire. Such doors shall meet the requirements aslaid down in IS : 3614 ( Part 1 ) - 1966.

9.6 Loose electrical connections and improperventilation resulting in the ignition or rise intemperature should be checked.

9.7 Spillage of any lubricants, fuel oil,inflammable materials should be cleared byspraying sand and clearing the surface.

9.8 No loose wires or .temporary wireconnections should be permitted in the controlrooms, oil cellars, cable tunnels service tunnelsetc.

9.9 No wooden door or window should beprovided in the control room, instrumentationroom, oil cellar, cable tunnel.

9.10 All partitions should be of steel frame andwood wool board or non-combustible sheets.No wooden partition is permitted within theplant premises.

9.11 Waste cotton should be disposed of in thebins filled with half water so that the cotton isdamp and will not catch fire.

9.12 Where considerable amount of combustiblematerials are stored cordoning off the area andadequate provision to supervise the area byinstalling monitors should be made.

9.13 Any electrical defect or any leakage in thegas mains or leakage of any oils should be

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··IS 13694: 1"3

checked and rectified immediately. Suitable sasdetectors should be installed.

9.14 Welding and flame cutting operationshould be properly supervised. For carryingout welding or flame cutting on gas lines, afire safety protcollisting out the precautions tobe taken and responsibility assigned should bemade before taking up the job which mayinclude placement of persons with adequate firefighting equipment at their disposal and theyshould be assigned to observe the welding andcutting operation only. Where more than onefloor is exposed additional fire watches may berequired.

9.14.1 Flying sparks from welding and flamecutting operations are frequently thrown orfallen into places where inflammable materialmay smolder for hours before bursting intoflame. A careful inspection of all areas nearthe welding site including floors above andbelow shall be made when the job is finished orinterrupted and such areas are kept under watchfor a period long enough to make certain thatno smoldering fires have developed.

9.15 Spilling of hot material on the structures,cable trays, conveyor belts should beimmediately quenched to stop spread of fire.

9.16 Where gas or inflammable liquids arestored and are being used explosion prooflighting should be provided.

9.17 Any rate or any other insects should bekilled or driven out by pest control methods asthey are of the sources of snapping the wires andcausing short circuits.

10 FIRE DETECTION AND ALARM SYSTEM

10.1 For minimization of losses due to fire it isimperative that any outbreak of fire in the steelindustry is detected as early as possible so thatthe fire supression can commence promptly.The likely hazardous area should therefore beprotected with the following:

a) An automatic fire detection and alarmsystem,and

b) Manually operated fire alarm system.

10.2 Automatic fire detection and alarm systemshall be installed in accordance with IS 2189:1988 and smoke and heat detectors withIS 2175 : 1988. The manual call boxes andcontrol panel shall also conform to IS 2189 :1988.

10.3 A hot line telephone connecting thevarious zonal offices to the central fire stationwith battery back up should be provided as ameans of rapid communication at the centralmanned post so that the fire brigade may bealerted without delay. Alternatively, thedetector in the zone namely blast furnace,steel melting shop, soaking pits, hot rollingmills, cold rolling mills,sinter plant, spoDge iron

plant, electric arc furnace, laddle repaid shop...acetylene plant, oxygen plant, oxygen storalearea, central LPG sas storage area, US dieseLstorage area, central repair shop area, mainoffice area, etc. may be arranged to actuate­audio-visual alarm at the nearest public firo·brigade station.

JO.4 While selecting a suitable detector anddeciding upon the type and spacing, thefollowing should be borne in mind:

a) The oil cellars, the HSD storage and'.pumping area, and dust generating areasshould be provided with heat detectors(rate of rise-cum-fixed temperature heatdetectors type.)

b) Cable tunnels should be protected withoptical type of detectors. Control rooms.and offices should have ionisation/opticaltype detectors. As the cable tunnels..control rooms, offices have positive airpressure, the smoke gets carried away'with the wind and as such the sensitivityshould be high.

c) The beam type of detector in the steel.industry will not be effective as the lightbeams are frequently intercepted by the'maintenance peope and other objects.

d) Cable tracer type of detectors shall belaid along the cable in the cable trays toindicate rise in temperature and actuatethe fire detection system. These detectorsare suitable for cable tunnels and'electrical control room.

e) The cable tunnels are laid in accordancewith IS 12459 : 1988.

f) The computer rooms and offices withfalse ceiling should have smoke typedetectors provided both in open areas andthe false roof areas to detect theoccurrence of fire.

g) Gas vapour detector should be provided I

in the inflammable liquid storage areas,gas storage areas, rolling grinding andbeaming assembly areas so that the alarmsignals are given when the concentrationof the vapours reach maximum andpreventive measures are taken before theexplosion take. place. The occurrence of'explosion will be due to any electricalsparks and welding operation in the area.

h) In the main shops, where the areas areopen and the processing equipment is·stalled, the provision of any automaticdetection and alarm system is Dot ­necessary.

j) The general stores and laboratory wherecostly equipment are existing. detection.system and alarm system should bo.provided.

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,

k) All manual call boxel Ihould form part of, the general detection system. .

. m) The manually operated electrical firealarm system should also be arranged togive an audio visual warning at the same·centrallocation and shop floor location,. the automatic fire detection and alarmsystem, according to provision given inIS 2189 : 1988.

n) The location of the manually operatedcall boxes should be visible and easilyapproachable. A white circle of 300 mmdia should be drawn around the call boxwith a red circle of 100 mm dia drawninside the same where the call box islocated for easy identification. The callboxes should be numbered and thelocation should be indicated in the cellarsand the halls for easy reach. The logoshould be written that in case of firereach the call box located at ....•• , thelocation of the call box should not exceed100 m in the travel distance.

11 FIRE EXTINGUISHING SYSTEMS

11.1 Steel industries should be equipped withsuitable fire extinguishing systems andequipment both fixed and portable.

11.2 Fixed fire extinguishing systems may beautomatic or manually operated. The decisionabout the installation of any particular type offixed fire extinguishing system depends on thevalue of the fire occurrence. The choice alsodepends upon each situation, local preferences,tho degree of sophistication and degree ofoccupancy desired. Broad guidelines areindicated in 11.2.1 and J1.2.2.

11.2.1 As the medium of extinguishing consistsof spray of water the following should be takeninto consideration to arrive at a decision:

a) Sprinklers actuated in the early Itages ofa fire may localise the fire and prevent itfrom spreading.

b) Fuel oil storage tanks, out door trans­formers, oil cellars, electrical controlrooms near hot processing equipment likeblast furnace steel melting shop orfurnace. sintering plant, sponge ironplant, coke storage, coal storages, gasstorages etc. are some of the areas wheresprinkler system will be effective toquench the fire in the initial stages.

c) A sprinkler system is a comparativelymore economical than the otherextinguishiDI media.

d) The Ipl'inklar systom contaiul the fire toa limited extent and cannot be the mainmedia of quenchiDI fire in a steelindustry.

IS 13"4 : 1993

e) Sprinkler systems are Dot suitable forcable tunnels, the blast furnace area, steelmeltin, shop area. hot rolling mill area,coke oven area, by-product area, oxygenplant. aeelytene plant. etc. where thewater would cause explosions damagingthe main equipment.

11.2.2 Carbon dioxide system (See IS 6382:1984 )

Carbon dioxide system of total flooding can bevery effective but has the following limitations:

a) The rate ofdischarge from a total floodingtype fixed carbon dioxide fire extingui­shing system is high and effectiveconcentration of the gas can be maintanedfor an extended period to ensure completeextinction.

b) Carbon dioxide is highly corrosive andwill take time to fill big oil cellars andelectrical control rooms. The corrosioneffects the electrical contact points.

c) The system requires a full-proof methodof evacuating people before the carbondioxide is let out.

d) It is highly asphyciating and all careshould be taken to see all persons areevacuated before release of carbondioxide. In open shops, a skirting is tobe provided to attain the effectiveconcentration. The skirt should drop andcover the equipment while carbon dioxideis being discharged.

e) Hence this system is adopted normallyfor enclosed unoccupied spaces.

11.2.3 Halon SYltem

Halon system is more efficient than CO 2 system.It occupies less space and volume. It requiresonly 25% of halon to control a similar fire.Further, maintenance is also much easier.However, because of its adverse affect onenvironment, use of halon should be restrictedto only most expensive equipments whichotherwise cannot be protected, like computerroom, main control room panel, etc.

11.2.4 High Expansion Foam System

High expansion foam is capable of successfulcontrolling fires at speed compared tosprinklers. In oil cellars, continuous castequipment, and hot rolling mill drives, hydrauliccellars, this is very effective as it has a very lowwater content and water damage to any area islow. Since the entire room/compartment shouldbe filled with high expansion foam for achievingcomplete extinction. the low water content foamis spread over all the items in the cellars­rooms and extensive slow age operations are

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IS 13"4 : 1'93

necessary immediately after the fire is oltingui­shed. The fuel oil storage tanks and the otherexplosive areas of LPG storages are engulfedin the high expansionfoam system. The basicadvantage is that the foam will contain fire dueto the stoppage in oxygen supply from the airand will extinguish the fire. In cable tunnelsand oil cellars, the usage of high expansion foamsystem is very effective.

11.2.5 Water Spray and Fixed ManuallyOperated Fire ExtinguishingSystem

In a steel industry where the technology isbased OD the reduction of materials is with theheat. the existence of fire is in the process itself.Water is the main source for quenching thefire. The usage of water on hot metal willexplode and as such the technology of firefighting has to be properly adopted.

Irrespective of the type of fixed automatic fireextinguishing system that may be installed, firehydrants and first aid hose reels should also beinstalled both indoors and out-doors becausewater is still necessary in plentiful supply forextinguishing any fire that may otherwise burnunabated.

11.2.5.1 Various technological shops are locatedin the steel industry, water for the fire fightingshould be provided through fire hydrants andstatic water tanks.

11.2.5.2 In order to provide immediate attackon the fire, in addition to the external andinternal hydrant system which may take timeto operate, it is recommended that first aid hoseis provided at suitable points inside the shop.These first aid hoses are 32 mm dia and keptin a flaked condition inside the hose box with abranch pipe of 12 mm dia permanently fixed onthe same. Such first aid hose shall be directlytapped from the pressurised hydrant line. Allnormal hydrants in the shops should havesingle outlet. Adequate capacity of static watertank should be provided at suitable points fordirect fire fighting by fire tenders and pumps.

11.1.6 Fire Extinguishers

Portable fire extinguishers of appropriate typesshould be provided and maintained throughoutthe building ( see IS 2190: 1992). The guidingprinciple is that fire extinguisher should bereadily available so that these can be usedwithout any delay in the initial stages of fire.In cable tunnels, oil cellars, control room, foamtype and foam/COs type should be provided.In the sub-stations and transformer stationsfoam/CO. type and powder type should beprovided. The blast furnace. and its auxiliarieswill call for foam type, water and carbondioxide. The coke oven and its auxiliaries callfor foam and water type.

11.2.6.1 Fire extinguishers shall be selected andinstalled in accordance with IS 2190 : 1992.

12 FIRE CRECK: DOORS

11.1 Fire check doors shall be installed towithstand the fire and to prevent the spread offire in the steel industry.

11.2 The entry of cable tunnel into the cellarsshould be through fire check doors.

11.3 The oil cellars and t he electrical cellarshould be separated by a fire check door.

11.4 All doors in cellars or offices or controlrooms should open to open air so that in caseof fire the persons working can escape byopening the door. Provision of door openingsinto the cellars will be a cause of disaster asthe persons working in the areas will try topush the door for opening which will not openoutside as it is designed to open inside and willbe trapped.

13 MAINTENANCE

13.1 The fire detection and alarm installations(see IS 2189: 1988) and fire suppressionsystem/equipment should be maintained inserviceable conditions at all times.

13.2 Building(s) should be maintained in sucha manner that horizontal and vertical firecompartmentation are not disturbed or adverselyaffected at any place any time. Particularattention should be paid to the continuity andrepair of all walls and floors and the fire/smokecheck doors. It should be ensured that thedoors are not wedged open and the door closersfunction effectively.

13.3 All water supply sources should beinspected once in a week and replenished asnecessary.

13.4 All portable fire extinguishers should beinspected and maintained according toIS 2190 : 1992.

14 EMERGENCY ORGANIZATION

14.1 An emergency organization should be setup by giving them first aid fire fighting training.The training of usage of detection system, fixedand portable system and for action during a fireemergency.

14.2 Detailed orders should be drawn up foraction to be taken and responsibility of allindividuals in the event of fire and copiesshould be made available to all concerned.14.3 The details of fire fighting techniquesshould be conspicuously displayed In all places.These details should be painted on walls orpartitions and should be maintained periodicallyfor visibility and prominance, The exits shouldbe marked in local language.14.4 It should be the duty of the fire fightingdepartment and the plant operating people toknow that maintenance and operation of tho

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IS 13694 : 1993

equipment as a training will help to save the acquainted with the equipment installed and themen and machinery from the fire hazards. action to be taken in the event of an outbreak

of fire and in the operation and use of first aid14.5 All employees of steel industry should be hose reels and fire extinguishers.

ANNEX A( Clause 2 )

LIST OF REFERRED INDIAN STANDARDS

3614 Specification for fire check( Part 1 ) : 1966 doors: Part 1 Plate metal

covered and rolling type

6382 : 1984 Code of practice for designand installation of fixed fireextinguishing system (firstrevision)

11360 : 1985 Specification for smokedetectors for use in automaticelectrical fire alarm system

12459 : 1988 Code of practice for fire­protection of cable runs

IS No.

2175 : 1988

2189 : 1988

2190 : 1992

Title

Specification for heat sensitivefire detectors for use inautomatic fire alarm system( second revision)

Code of practice for selection,installation and maintenanceof automatic fire detectionand alarm system (secondrevision)Code of practice for selection,installation and maintenanceof portable first-aid fireextinguishers ( third revision )

7

IS No. Title

Page 14: IS 13694 (1993): Code of practice for fire safety in iron

Staadlrel Mark

The use of the Standard Mark is governed by the provisions of the Bureau of IndtanStandard, Act. 1986 and the Rules and Regulations made thereunder. The Standard Mark OD

products covered by an Indian Standard conveys the assurance that they have been producedto comply with the requirements of that standard under I well defined system of inspection.testing and quality control which is devised and supervised by DIS and operated by the pro­ducer. Standard marked products are also continuously checked by DIS for conformity tothat standard as a further safeguerd. Details of conditions under which a licence for the useof the Standard Mark maybe granted to manufacturers or producers may be obtained.fromthe Bureau of IndianStandards.

Page 15: IS 13694 (1993): Code of practice for fire safety in iron

Barel. 011a411. StlDdlrell

BIS is a statutory institution established under the Bureau o/Indla" Sta".,. Act, l~B' to promotebarmonious development of the activities of standardization, martini and quality certification 0180 0ds and attending to connected matters in the country.

Copyr1lbt

BIS has the copyright of all its publications. No part of these publications may be reproduced faany form without the prior permission in writing of BIS. This does Dot preclude the free use, iDthe course of implementing the standard, of necessary details, such as symbols and sizes, types orgrade designations. Enquiries relating to copyright be addressed to the Director ( Publications ), DIS.

Renew of Indian Standards

Amendments are issued to standards as the need arises on the basis orcomments. Standards are alsoreviewed periodically; a standard along with amendments is reaffirmed when such review indicatesthat no changes are needed; if the review indicates that changes are needed, it is taken up for re­vision. Users of Indian Standards should ascertain that they are in possession of the latest amend.ments or edition by referring to the latest issue or 'BIS H-andbook' and 'Standards MonthlyAdditioDs'. Comments on this Indian Standard may be sent to BIS giving the following reference:

Doc: No. CEO 36 ( 4534 )

Amead_eDts Issued SiDee PubllcatloD

Amend No. Date of Issue

BUREAU OF INDIAN STANDARDS

Text Affected

Headquarters:Manak Dhavan, 9 Baudur Shah zarar Mar" New Delhi 110002Telephones : 3~._ 01 31, 331 13 7S

Relional Offices:

Central: Manak Bhavan, 9 Bahadur Shah zarar MarlNEW DELHI 110002

Eastern: 1/14 C. I. T. Scheme VII M, V. I. P. Road, ManiktolaCALCUTTA 700054

Northern: sea 445-446, Sector 3S-C, CHANDIGARH 160036

Southern: C. I. T. Campus. IV Crosl Road, MADRAS 600113

Western: Manakalaya, B9 MIDC. Marol, Andheri ( East)BOMBAY 400093

Telelrams: Manaksaoltba(Common to all omce.)

Telephone

{331 01 31331 13 75

{37 84 99. 37 85 6137 86 26. 37 86 62

{53 38 43. 53 16 4053 23 84

J23S 02 16, 23S 04 42l235 15 19, 235 23 l'

{632 92 95, 632 78 58632 78 91, 632 78 92

Branche. : AHMADABAD. BANGALORE. BHOPAL. BHUBANBSHWAR. COIMBATORB.FARIDABAD. OHAZIABAD. OUWAHATI. HYDERABAD. JAIPUR. KANPUR.LUCKNOW. PATNA. THIRUVANANTHAPURAM.

PrlDIN al parlloa 8ai.rprlla, belhl, ladJi