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 2925 (1984): Specification for Industrial Safety Helmets(Bilingual) [CED 22: Fire Fighting]

vkbZ,l@IS 2925 : 1984

Hkkjrh; ekud

vkS|ksfxd lqj{kk gsyesV dh fof'kf"V¼ nwljk iqujh{k.k ½

la'kks/ku la0 1 ls 4 lekfo"V

Indian StandardSPECIFICATION FOR INDUSTRIAL SAFETY HELMETS

( Second Revision )Incorporating Amendments No. 1 to 4

;wMhlh@UDC 614.891.1: 658.382.3

¼iquiqZ"V@Reaffirmed 1995)¼f}Hkk"kh@Bilingual½

© Hkk ek C;wjks 2011

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© BIS 2011

B U R E A U O F I N D I A N S T A N D A R D SMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

tuojh@January 2011 ewY; oxZ@Price Group 4

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bl Hkkjrh; ekud (nwljk iqujh{k.k) ds elkSns dks vfXu 'keu fo"k; lfefr }kjk vafre :i fn, tkus vkSj flfoy bathfu;jhfoHkkx ifj"kn }kjk vuqeksfnr fd, tkus ds ckn Hkkjrh; ekud laLFkk (HkkekC;wjks) }kjk 31 ebZ 1984 dks xzg.k fd;k x;kA

gsyesV cgqr ls m|ksxksa ;Fkk [kuu] lqjax fuekZ.k] mR[kuu] iksr fuekZ.k] fuekZ.k ifj;kstukvksa vkSj lkekU;r% ,sls gh O;olk;ksa esaoLrq,¡ fxjus ls yxus okyh pksVksa dks jksdus ds fy, dkexkjksa ds fy, futh lqj{kk dh ,d vR;Ur egRoiw.kZ oLrq gSA fxjrhgqbZ oLrqvksa ls flj ij yxus okyh pksV xEHkhj vkSj dHkh&dHkh ?kkrd gksrh gSA ;g ekud cgqr ls m|ksxksa esa fxjus okyh oLrqvksavkSj vU; lkekU; [krjksa ls i;kZIr lqj{kk iznku djus esa l{ke vkS|ksfxd lqj{kk gsyesVksa ds fy, rS;kj fd;k x;k gSA ;g ekudigys 1964 esa çdkf'kr fd;k x;k Fkk vkSj 1975 esa bldk iqujh{k.k fd;k x;kA ;g nwljk iqujh{k.k vc rd tkjh fd, x,lHkh la'kksèkuksa dks 'kkfey djus osQ vfrfjDr ØSMy ls ,adfjax IokbaVksa dh la[;k vkB ls U;wure pkj djus osQ fy, fd;k x;kgS] rkfd uohure fMtkbu Hkh 'kkfey fd, tk losaQ vkSj gok fudkyus osQ Nsnksa dk izkkoèkku Hkh fd;k tk ldsA

;g ekud cukrs le; fo"k; lfefr us lqj{kk gsyesVksa ds fMtkbu esa vuko';d izfrcaèk yxkus ls cpus ij fo'ks"k è;ku fn;kgSA ;fn jlk;u] rsy vkfn fo'ks"k [krjs gksus dh laHkkouk gks rks ,sls [krjksa ls cpko osQ fy, ekud dh vis{kkvksa esa fo'ks"kvis{kk,¡ tksM+h tk,¡A

Fire Fighting Sectional Committee, BDC 22

FOREWORD

This Indian Standard (Second Revision) was adopted by the Indian Standards Institution (BIS) on 31 May 1984,after the draft finalized by the Fire Fighting Sectional Committee had been approved by the Civil EngineeringDivision Council.

Helmet is one of the most important items of personal protective equipment used by workers for protection againsthead injuries which may be caused by falling objects in many industires, for example, mining, tunnelling, quarrying,ship building, construction projects and similar occupations. Head injuries caused by falling objects are usuallyserious and sometimes fatal. This standard has been prepared for industrial safety helmets capable of providingadequate protection from falling objects and other hazards commonly met with in many industries. This standardwas first published in 1964 and revised in 1975. This second revision has been prepared so as to include all theamendments issued so far besides relaxing number of achoring points of cradle from eight to minimum four so thatlatest designs could also be covered in the revised version besides including the provision of ventilation holes.

In formulating this standard, the Sectional Committee has taken special care to avoid unnecessary restriction inthe design of safety helmets. If any special hazards, such as chemicals, oils, are likely to be encountered, therequirements of standard should be supplemented by special requirements to afford protection against such hazards.

(Continued on third cover)

(rhljs doj ij tkjh)

1

vkbZ,l@IS 2925 : 1984

1 SCOPE

1.1 This standard lays down the requirements regardingmaterial, construction, workmanship and finish andperformance requirements of helmets intended toprovide protection against falling objects and otherhazards which may be encountered in mining,tunnelling, quarrying, ship building, constructionprojects and similar other industrial occupations.

2 TERMINOLOGY2.0 For the purpose of this standrad, the followingdefinitions shall apply.

2.1 Brim — The rim surrounding the shell.

2.2 Chinstrap — An adjustable strap that fits underthe chin to secure the helmet on the head.

2.3 Harness — The complete assembly by means ofwhich the helmet is maintained in position on the head,which includes headband, cradle, etc.

2.3.1 Headband — Part of harness surrounding thehead. The plane of lower margin of headband shallcorrespond to reference line of the headform and theheadband may or may not be continuous when Naperstrap is provided (see IS 7692 : 1975 ‘Specification forwooden headform for testing of helmets’).2.3.2 Anti-concussion Tapes — Supporting straps whichform the cardle.

2.3.3 Cradle — The fixed or adustable assemblycomprising of anti-concussion tapes and nape strapwhere provided.

2.3.4 Nape Strap — An adjustable (with respect to theshell) strap that fits behind the head to secure the helmetand may be integral part of the headband.

1 fo"k; {k s=k1 fo"k; {k s=k1 fo"k; {k s=k1 fo"k; {k s=k1 fo"k; {k s=k

1-1 1-1 1-1 1-1 1-1 bl ekud esa [kuu] lqjax fuekZ.k] mR[kuu] iksr fuekZ.k]fuekZ.k ifj;kstukvksa vkSj ,sls gh vU; vkS|ksfxd O;olk; osQnkSjku fxjus okyh oLrqvksa vkSj vU; [krjksa ls laj{k.k osQ fy,gsyesVksa dh lkexzh] fuekZ.k] dkjhxjh] fiQfu'k vkSj dk;Zdkfjrklacaèkh vis{kk,¡ fuèkkZfjr dh xbZ gSaA

2 ifjHkkf"kd 'kCnkoyh2 ifjHkkf"kd 'kCnkoyh2 ifjHkkf"kd 'kCnkoyh2 ifjHkkf"kd 'kCnkoyh2 ifjHkkf"kd 'kCnkoyh

2-0 2-0 2-0 2-0 2-0 bl ekud osQ iz;kstu osQ fy, fuEufyf[kr ifjHkk"kk,¡ykxw gksaxhA

2-1 fdukjk2-1 fdukjk2-1 fdukjk2-1 fdukjk2-1 fdukjk μ [kksy osQ pkjksa vksj cuk fjeA

2-2 BksMh iQhrk2-2 BksMh iQhrk2-2 BksMh iQhrk2-2 BksMh iQhrk2-2 BksMh iQhrk μ ,d lek;kstuh iQhrk tks gsyesV dks fljij dl dj ckaèks j[kus osQ fy, BksMh osQ uhps fiQV gks tkrk gSA

2-3 gkus Zl 2-3 gkus Zl 2-3 gkus Zl 2-3 gkus Zl 2-3 gkus Zl μ og iw.kZ leqPp;] ftldh lgk;rk osQ fy,gsyesV dks flj ij lgh fLFkfr esa j[kk tkrk gS] ftlesagSMcSaM] ØSMy bR;kfn 'kkfey gSaA

2-3-1 2-3-1 2-3-1 2-3-1 2-3-1 gSMcSaM μ flj oQks pkjksa vksj ls ?ksjs gq, gkusZl dkHkkxA gSMcSaM osQ fupys ek£tu dk Iysu gSMiQkseZ dh fjçsQalykbu (ns[ksa vkbZ,l 7692 % 1975 ^gSyesV ijh{k.k osQ fy,ydM+h ds gSMiQkeZ dh fof'kf"V*) osQ laxr gks vkSj usiLVSªigksus ij gSMcSaM lrr Hkh gks ldrk gS vFkok ugha HkhA

2-3-2 2-3-2 2-3-2 2-3-2 2-3-2 la?kV~Vu&jksèkh iQhrs μ ØSMy osQ fuekZ.kh iQhrksa dkslgkjk nsus okysA

2-3-3 2-3-3 2-3-3 2-3-3 2-3-3 ØSMy μ la?kV~Vu jksèkh iQhrksa vkSj] tgk¡ fn;k x;k gks]uSiLVªsi dk fLFkj vFkok lek;kstuh; leqPp;A

2-3-42-3-42-3-42-3-42-3-4 uSiLVªSi μ [kksy osQ ifjizs{; esa lek;kstuh; iQhrk] tksgsyesV dks dldj ckaèks j[kus osQ fy, flj osQ ihNs fiQV gksrkgS vkSj gSMcSaM dk vfHkUu vax gks ldrk gSA

Hkkjrh; ekud

vkS|ksfxd lqj{kk gsyesV dh fof'kf"V¼ nwljk iqujh{k.k ½

Indian StandardSPECIFICATION FOR INDUSTRIAL SAFETY HELMETS

( Second Revision )

2

vkbZ,l@IS 2925 : 1984

2.4 Peak — The extension of the shell above the eyes.

2.5 Shell — The hard smoothly finished material thatprovides the general outer form of the helmet.

2.6 Ventilation Holes — Holes provided in the shellto permit circulation of air inside the helmet.

3 MATERIAL

3.1 Shell — The shell of the helmet shall be of non-metallic materials conforming to test requirementsgiven in 8.

3.2 Harness — The criteria for the selection of materialfor the headband, anti-concussion tape, etc, is that theseshall be sweat-resistant, non-irritant and shall not causeskin disease.

3.3 Metal Parts — The metal parts used in helmetsshall be either inherently corrosion resistant or of suchmetal which have been treated for these properties. Suchparts shall show no sign of corrosion when subjectedto test, as specified in Appendix A.

NOTE — Helmets required for use in underground mines shallhave no metal parts made from aluminium or magnesium ortheir alloys.

4 SIZES4.1 Helmets shall be in sizes 520, 530, 540, 550, 560,570, 580, 590 and 600 mm. These sizes may begenerated out of one or more shells or one or moreheadbands. The size adjustment range shall be clearlymarked on the helmet.

4.1.1 A tolerance of ±10 mm on the size of the headbandshall be permitted.

NOTE — The size of the headband shall be measured witheither a fixed ring gauge or an expanding gauge which shall bemade of metal or by an appropriate headform.

5 CONSTRUCTION5.1 The shell shall be dome-shaped. There shall not beany metallic component passing through the shell. Itshall be provided with a brim with or without a peak.The brim and peak (where provided) shall be integralpart of the shell and these shall have no sharp edges.The brim shall be continuous around the dome. Thedimensions of brim and the peak (were provided) shallbe in accordance with Fig. 1. The position of ventilationholes shall be such that the central axis of the holes isalmost horizontal when the helmet is in normal wearingposition. The diameter of any hole shall not exceed 6mm nor the edges of adjacent holes closer than 15 mm.The minimum number of holes on each of the two sidesshall be not less than 3 and total aggregate area of holesshall not less than 180 mm2 and not exceed 300 mm2.

2-4 ihd 2-4 ihd 2-4 ihd 2-4 ihd 2-4 ihd μ [kksy dk vk¡[kksa osQ mQij c<+k gqvk fgLlkA

2-5 [kksy 2-5 [kksy 2-5 [kksy 2-5 [kksy 2-5 [kksy μ lgh izdkj dBksjrk ls fiQfu'k dh xbZ lkexzhtks lkekU; :i ls gsyesV dh ckgjh vkÑfr gksrh gSA

2-6 laokru fNnz 2-6 laokru fNnz 2-6 laokru fNnz 2-6 laokru fNnz 2-6 laokru fNnz μ gsyesV osQ vanj gok osQ vkokxeu osQfy, [kksy esa cus fNnzA

3 lkexzh3 lkexzh3 lkexzh3 lkexzh3 lkexzh

3-13-13-13-13-1 [kksy [kksy [kksy [kksy [kksy μ gsyesV dk [kksy vèkkRoh; lkexzh dk gks vkSj[k.M 88888 dh ijh{k.k vis{kk osQ vuq:i gksA

3-2 gkus Zl 3-2 gkus Zl 3-2 gkus Zl 3-2 gkus Zl 3-2 gkus Zl μ gSMcSaM] la?kV~Vu&jksèkh iQhrk bR;kfn dh lkexzhosQ p;u osQ eki naM] ftuosQ vuqlkj ;s ilhuk izfrjksèkh] xSj[kqtyhdkjh gks vkSj buls dksbZ Ropk jksx u gksA

3-3 èkkrq osQ Hkkx 3-3 èkkrq osQ Hkkx 3-3 èkkrq osQ Hkkx 3-3 èkkrq osQ Hkkx 3-3 èkkrq osQ Hkkx μ gsyesV esa iz;qDr èkkrq Hkkx ;k rksLokHkkfod :i ls la{kkj.k jksèkh gksa vFkok ,slh èkkrq osQ gksaftudk bu xq.k èkeks± osQ fy, mipkj dj fn;k x;k gksAvuqcaèk oQ esa fu£n"V ijh{k.k djus ij ,sls Hkkxksa esa la{kkj.kifjyf{kr u gksA

fVIi.kh μμμμμ Hkwfexr [kkuksa eas iz;qDr gsyesVksa esa ,Y;qfefu;e vFkokeSxuhf';e vFkok mudh feJèkkrqvksa ls cus Hkkx u gksaA

4 lkbt4 lkbt4 lkbt4 lkbt4 lkbt

4-1 4-1 4-1 4-1 4-1 gsyesV 520] 530] 540] 550] 560] 570] 580] 590vkSj 600 fefe- lkbt osQ gksa] os lkbt ,d ;k vfèkd [kksyksavFkok gSMcSaMksa osQ cuk, tk ldrs gSaA gsyesV ij mlosQ lkbtlek;kstu dh jast Li"V :i ls fy[kh gksA

4-1-1 4-1-1 4-1-1 4-1-1 4-1-1 gSMcSaM osQ lkbt ij ±10 feeh- NwV vuqer gSA

fVIi.kh μ gSMcSaM dk lkbt ;k rks fLFkj fjax xst ls vFkok èkkrqls cus] iSQyko okys xst ls vFkok mi;qDr gSMiQkseZ ls ekiktk,A

5 fuek Z.k5 fuek Z.k5 fuek Z.k5 fuek Z.k5 fuek Z.k

5-15-15-15-15-1 [kksy xqEcn dh vkÑfr dk gksA [kksy osQ vanj lsdksbZ èkkfRod Hkkx u xqtjsA ;g fdukjh (fcze) ;qDr gksvkSj ihd lfgr vFkok jfgr gks ldrk gSA fcze vkSj ihd(tgk¡ izkoèkku gks) [kksy osQ vfHkUu vax gksa vkSj buesadksbZ rh{.k fdukjs u gksa] fcze xqEcn osQ pkjksa vkSj lrr gks]fcze vkSj ihd (tgk¡ izkoèkku gksa) vkÑfr 1 osQ vuqlkjgksaA gok fudyus osQ Nsnksa dh fLFkfr ,slh gks fd tcgsyesV iz;ksx esa gks rks Nsnksa dk osQUnzh; v{k yxHkx {kSfrtgks] fdlh Hkh Nsn dk O;kl 6 fefy- ls vfèkd u gksA ugh ikl okys Nsnksa osQ fdukjs 15 feeh- ls de utnhd gksa]nksuksa vksj Nsnksa dh U;wure la[;k 3 ls de u gksa vkSj Nsnksadk lexz {ks=k 180 feeh-2 ls de rFkk 300 feeh-2 lsvfèkd u gksA

3

vkbZ,l@IS 2925 : 1984

NOTE — However the condition of usage preclude the positionof ventilation holes, the same may not be provided.

5.2 Harness

5.2.1 Headband — The headband shall be not less than30 mm in width, and so designed that adustment to anysize specified in 4.1 may be readily made. It shall besecurely attached to the helmet shell and crown straps.

5.2.1.1 In order to provide ventilation the minimumdistance of headband from the shell achieved by spacersor otherwise shall be 5 mm except at the point of generaladjustment of headband.

5.2.2 Cradle — The headband shall be fitted with anti-concussion tapes secured at least at 4 anchoring pointsand forming a cradle. The width of the straps shall benot less than 19 mm. The straps shall ensure aclearance of at least 30 mm between the top of thewearer’s head and the inside of the top of the helmetcrown at the smallest size adjustment of the headbandand a wearing height (depth of fit) of not less than 80mm, at the maximum size adjustment of the headbandthen tested in accordance with the methods given inAppendix B.

5.3 Chin Strap or Nape Strap — The helmet shall beprovided either with the chin strap or nape strap.

5.3.1 Chin Strap — It shall be attached to the shell, beat least 19 mm wide, permanently fitted with a fasteningdevice to adjust and maintain tension, and conform tothe requirements given in Appendix C.

5.3.2 Nape Strap — It shall be either an integral part ofas an attachment to the headband, be adjustable and havea minimum depth of 115 mm when measured asin 5.3.2.1.

5.3.2.1 With the helmet fitted on a headform (seeIS 7692 : 1975 ‘Specification for wooden headform fortesting of helmets’) and loaded with a mass of 10 kg,the distance between the top of the headform and thebottom edge of the nape strap shall be not less than115 mm measured at the center rear of the headform.

5.4 Lamp Bracket (Where Required) — This shall bemade of plastic or suitable material and fixed to the shelland shall satisfy the following performance requirements:

The helmet with the peak cut off is mounted on awooden headform and held in position. A cap lamphook (detached from the head piece of cap lamp)is fitted ino the lamp bracket. A mass of 2.25 kg issuspended by a suitably strong cord of 100 cmfrom the outer rim of the cap lamp hook so thatthe cord coincides with the vertical axix of the

fVIi.kh μ ;fn iz;ksx dh voLFkk osQ dkj.k gok fudyus osQ Nsnksa dhfLFkfr laHko u gks rks os u fn, tk,¡A

5-2 gku s Zl5-2 gku s Zl5-2 gku s Zl5-2 gku s Zl5-2 gku s Zl

5-2-15-2-15-2-15-2-15-2-1 gSMcSaM μ gSMcSaM dh pkSM+kbZ 30 feeh- ls de u gksvkSj mudk fMt+kbu bl izdkj fd;k tk, fd os 4-1 4-1 4-1 4-1 4-1 esafu£n"V fdlh Hkh lkbt esa vklkuh ls lek;kstfr gks ldsA ;ggsyesV osQ [kksy vkSj Økmu iQhrksa ls etcwrh ls tqM+k gksA

5-2-1-1 5-2-1-1 5-2-1-1 5-2-1-1 5-2-1-1 laokru dk izkoèkku djus osQ fy, Lisljksa vFkokvU; ;qfDr;ksa ls j[kh xbZ [kksy ls gSMcSaM dh nwjh U;wure5 feeh- gksA ;g ckr gSMcSaM osQ lkekU; lek;kstu IokabV ijykxw ugha gksxhA

5-2-25-2-25-2-25-2-25-2-2 ØSMy μ gSMcSaM esa la?kV~Vu jksèkh iQhrs yxs gksa] tksde ls de 4 txgksa ls caèks gksa rFkk bl izdkj ,d ØSMydk :i ysaA iQhrksa dh pkSM+kbZ 19 feeh- ls de u gksA iQhrsbl izdkj yxs gksa fd vuqcaèk [k esa nh xbZ i¼fr;k¡ osQvuqlkj ijh{k.k djus ij gSMcSaM osQ U;wure lkbt lek;kstuij iz;ksDrk osQ flj rFkk gSyesV Økmu osQ fupys Hkkx osQchp de ls de 30 feeh- dh nwjh jgs rFkk gSMcSaM osQvfèkdre lkbt lek;kstu ij de ls de 80 feeh- igukom¡QpkbZ (fiQV dh xgjkbZ) gksA

5-3 BksMh iQhrk vFkok uSi LVSªi 5-3 BksMh iQhrk vFkok uSi LVSªi 5-3 BksMh iQhrk vFkok uSi LVSªi 5-3 BksMh iQhrk vFkok uSi LVSªi 5-3 BksMh iQhrk vFkok uSi LVSªi μ gsyesV osQ lkFk BksMhiQhrk vFkok usiLVSªi yxk gksA

5-3-15-3-15-3-15-3-15-3-1 BksMh iQhrk μ ;g [kksy ls tqM+k gks] de ls de 19fefe- pkSM+k gks] Vsa'ku ,MtsLV djus vkSj cuk, j[kus osQ fy,dlus dh ;qfDr lfgr gks vkSj vuqcaèk x esa nh xbZ vis{kk osQvuq:i gksA

5-3-25-3-25-3-25-3-25-3-2 uSi LVªSi μ ;g gSMcSaM dk ;k rks vfHkUu vax gksvFkok mldk ,d la;kstu gks] lek;kstuh; gks vkSj 5-3-2-15-3-2-15-3-2-15-3-2-15-3-2-1osQ vuqlkj ekius ij de ls de 115 fefe- xgjk gksA

5-3-2-15-3-2-15-3-2-15-3-2-15-3-2-1 gsyesV gSMiQkseZ (ns[ksa vkbZ,l 7692 % 1975 ^gsyesVksaosQ ijh{k.k osQ fy, ydM+h osQ gSMiQkseZ dh fof'kf"V*) ijyxk gksus vkSj ml ij 10 fdxzk- nzO;eku gksus ij gSMiQkseZ osQmQijh Hkkx vkSj uSi LVSªi osQ fupys fdukjs osQ eè; nwjh gSMiQkseZosQ fiNys Hkkx osQ eè; esa ekius ij 115 feeh- ls de u gksA

5-4 ySEi cSzosQV (tgk¡ visf{kr gks)5-4 ySEi cSzosQV (tgk¡ visf{kr gks)5-4 ySEi cSzosQV (tgk¡ visf{kr gks)5-4 ySEi cSzosQV (tgk¡ visf{kr gks)5-4 ySEi cSzosQV (tgk¡ visf{kr gks) μ ;g IykfLVdvFkok fdlh mi;qDr lkexzh dh gks vkSj [kksy ls tqM+h gksrFkk fuEufyf[kr dk;Zdkfjrk vis{kkvksa esa [kjh mrjs%

gsyesV dk ihd dkVdj fLFkfr esa j[ks gq, ydM+h osQgSMiQkseZ ij yxk;k tkrk gSA ,d dSi ySEi gqd (dSi ySEiosQ gSMihl ls vyx fd;k x;k gks) ySEi cSzfdV esa fiQVfd;k tkrk gSA dSi ySEi gqd osQ ckgjh fje ls mi;qDr:i ls etcwr 100 lsaeh- ls yEch Mksjh ls 2-25 fdxzk-nzO;eku bl izdkj fuyfEcr fd;k tkrk gS fd Mksjh

4

vkbZ,l@IS 2925 : 1984

pksVh ¼uksd½ ;fn yxkbZ xbZ gks

6 feeh- U;wure 50 feeh- vfèkdre

vkÑfr 1 fdukjs vkSj pksVh ds vk;keFIG. 1 DIMENSIONS OF BRIM AND PEAK

50 mm Max

Peak if provided

6 mm Min

mass. The mass is then raised through the sameaxix through 80 cm and let fall freely. Two trialsbeing made in each case. The bracket shall remainintact.

5.5 Cable Clip (Where Required) — This shall bemade of plastic or suitable material and fixed to theshell and shall satisfy the following requirements:

A helmet with the brim cut off paritally at the backis mounted on the woollen headform and held inposition. A mass of 2.25 kg is suspended by asuitably strong cord of length 50 cm from the cableclip, keeping the point of suspension closest to theshell. The mass is raised and let fall freely throughthe height of 30 cm; two trials being made in eachcase. The cable clip shall remain intact.

6 WORKMANSHIP AND FINISH

6.1 The surface of the helmet shall be finished smooth,free from burrs; sharp edges shall be removed to ensureproper surface contact of all fittings. All metal partsincluding rivets shall be smooth and free from sharp orrough edges or projections.

nzO;eku osQ mQèoZt v{k ij vk tk,A blosQ ckn nzO;ekumlh v{k ls 80 lsaeh- mBkdj mls eqDr :i ls fxjus fn;ktkrk gSA izR;sd ekeys esa nks Vªk;y fd, tkrs gSaA cSzdsV dksdksbZ uqdlku u gksA

5-5 dscy fDyi (tgk¡ visf{kr gks)5-5 dscy fDyi (tgk¡ visf{kr gks)5-5 dscy fDyi (tgk¡ visf{kr gks)5-5 dscy fDyi (tgk¡ visf{kr gks)5-5 dscy fDyi (tgk¡ visf{kr gks) μ ;g IykfLVdvFkok fdlh mi;qDr lkexzh ls cuh gks vkSj [kksy ls tqM+h gksrFkk fuEufyf[kr vis{kk,¡ iwjh djs%

gsyesV dk fcze fiNyh vksj ls vkaf'kd :i ls dkV djmls ydM+h ds gSMiQkseZ ij yxk;k tkrk gS vkSj fLFkfr esaj[kk tkrk gSA 50 lsaeh- yEch mi;qDr rFkk etcwr Mksjhls 2-25 fdyksxzke osQcy fDyi esa yVdk;k tkrk gSA,slk djrs le; fuyacu dk IokbaV [kksy osQ fudVrej[kk tkrk gSA nzO;eku dks mQij mBkdj 30 lsaeh- dhmQ¡pkbZ ls eqDr :i ls fxjus fn;k tkrk gSA izR;sd ckj 2Vªk;y fd, tkrs gSaA dscy fDyi dks dksbZ {kfr u igq¡psA

6 dkjhxjh vk Sj fiQfu'k6 dkjhxjh vk Sj fiQfu'k6 dkjhxjh vk Sj fiQfu'k6 dkjhxjh vk Sj fiQfu'k6 dkjhxjh vk Sj fiQfu'k

6-1 6-1 6-1 6-1 6-1 gsyesV dh lrg dh fiQfuf'kax likV gks] bl ij [kqjnjsfdukjs u gksa_ lHkh fiQfVaxksa dk bldh lrg ls mi;qDr laidZlqfuf'pr djus osQ fy, rh[ks fdukjs lekIr dj fn, tk,¡AfjfoV lfgr èkkrq osQ lHkh Hkkx likV gksa vkSj rh[ks vFkok[kqjnqjs fdukjksa vFkok ckgj fudys gq, Hkkxksa ls eqDr gksaA

5

vkbZ,l@IS 2925 : 1984

7 MASS

7.1 The mass of a complete helmet without attachmentsand with or without peak (where not provided) maynot exceed 400 g. If the mass exceeds 400 g, this massdetermined to the nearest 35 g shall be shown on alabel attached to the helmet.

8 PERFORMANCE REQUIREMENTS

8.1 Shock Absorption Resistance — Helmets shallbe tested for shock absorption by the method describedin Appendix D within one minute after subjecting themto the conditions specified in (a), (b) and (c) below:

a) A temperature of 50 ± 5°C for 4 hours in anoven,

b) A temperature of –10 ± 2°C for 4 hours in arefrigerator, and

c) Water flowing over the whole outer surfaceof the shell at room temperature for 4 hours ata rate of 1 1/min.

No single helmet shall, however, be subjected to morethan one of these conditions. The shell shall not showany penetration and/or cracks (separation of material)and harness shall not show any damage deterioratingits function. The force transmitted from the headformto the base shall not be higher than 5 kN (510 kgf).

8.2 Penetration Resistance — Helmet shall be testedfor penetration resistance in accordance with themethod specified in Appendix E within one minute aftersubjecting it to one of the conditions given in 8.1 whichhas given worst result in shock absorption. These shallneither break nor be forced through sufficiently to touchthe headform; no integral part shall fail or stretch per-mitting the helmet to be forced down over the headform.The static measurement of the depth of a penetrationor dent including the thickness of the material of theshell shall not exceed 10 mm.

8.3 Flammability Resistance — Helmet shell shallbe tested for flammability resistance in acordance withthe method specified in Appendix F. The material ofthe shell shall not burn with emission of flame after aperiod of 5 seconds following removal of flame.8.4 Electrical Resistance — Helmet shell be testedfor electrical resistnace in accordance with the methodspecified in Appendx G, and shall not show a leakagecurrent in excess of 3 mA.8.5 Water Absorption — Helmet shell shall be testedfor water absorption in accordance with the methodspecified in Appendix H, and shall not absorb watermore than 5 percent of its mass.8.6 Heat Resistance — Helmet shell shall be tested

7 n z O;eku7 n z O;eku7 n z O;eku7 n z O;eku7 n z O;eku

7-17-17-17-17-1 la;kstuksa osQ fcuk vkSj ihd lfgr vFkok jfgr (tgk¡ ugks) iw.kZ gsyesV dk nzO;eku 400 xzke ls vfèkd u gksA ;fnnzO;eku 400 xzke ls vfèkd gks rks bls fudVre 35 xzke rdKkr djosQ gsyesV osQ lkFk yxs yscy ij n'kkZ;k tk,A

8 dk;Zdkfjrk vis{kk, ¡8 dk;Zdkfjrk vis{kk, ¡8 dk;Zdkfjrk vis{kk, ¡8 dk;Zdkfjrk vis{kk, ¡8 dk;Zdkfjrk vis{kk, ¡

8-1 iz?kkr vo'kks"k.k izfrjksfèkrk 8-1 iz?kkr vo'kks"k.k izfrjksfèkrk 8-1 iz?kkr vo'kks"k.k izfrjksfèkrk 8-1 iz?kkr vo'kks"k.k izfrjksfèkrk 8-1 iz?kkr vo'kks"k.k izfrjksfèkrk μ gsyesVksa dk uhps(d)] ([k) vkSj (x) eas n'kkZbZ xbZ voLFkkvksa ls xqtkjus osQ,d feuV osQ vanj vuqcaèk ?k esa o£.kr i¼fr ls iz?kkrvo'kks"k.k ijh{k.k fd;k tk,%

d) vksou esa 4 ?kaVksa rd 50 ± 5°lsa- rkieku][k) jsfçQtjsVj esa 4 ?kaVksa rd –10 ± 2°lsa- rkieku]

vkSj

x) [kksy osQ lEiw.kZ ckgjh Hkkx ij d{k rkieku ij4 ?kaVs rd 1 fyVj izfr feuV dh nj ls ikuh dkizokgA

rFkkfi fdlh gsyesV dks buesa ls ,d ls vfèkd voLFkk lsu xqtkjk tk,A [kksy esa Hksnu vkSj@vFkok njkj (lkexzh dkpVdu) u fn[ksA gkusZl esa ,slh dksbZ {kfr u fn[kkbZ ns tksbldh dk;Zdkfjrk dks izHkkfor dj nsA gSMiQkseZ ls vkèkkj rdlapkfjr cy 5 kN (510 kgf) ls vfèkd u gksA

8-2 Hksnu izfrjksfèkrk 8-2 Hksnu izfrjksfèkrk 8-2 Hksnu izfrjksfèkrk 8-2 Hksnu izfrjksfèkrk 8-2 Hksnu izfrjksfèkrk μ gsyesV dk 8-1 8-1 8-1 8-1 8-1 esa nh xbZ mlvoLFkk osQ ,d feuV osQ vanj vuqcaèk M+ esa fu£n"V i¼frosQ vuqlkj izfrjksfèkrk ijh{k.k fd;k tk,] ftlesa iz?kkrvo'kks"k.k dk lcls [kjkc ifj.kke vk;k gksA ;g u rks VwVsvkSj u gh blesa ,sls Nsn gksa fd gSMiQkseZ ls lEidZ gks tk,Abldk dksbZ vfHkUu Hkkx bruk vliQy u jgs vFkok u iSQysfd gsyesV dks gSMiQkseZ ij tcZnLrh iguuk iM+sA fdlhHksnu vFkok xM~~<+s dh xgjkbZ] ftlesa [kksy dh lkexzh dheksVkbZ Hkh 'kkfey gks] dk fLFkj ekiu 10 feeh- ls vfèkdu gksA

8-3 Toyu'khyrk izfrjksfèkrk 8-3 Toyu'khyrk izfrjksfèkrk 8-3 Toyu'khyrk izfrjksfèkrk 8-3 Toyu'khyrk izfrjksfèkrk 8-3 Toyu'khyrk izfrjksfèkrk μ gsyesVksa dk vuqcaèk p esafu£n"V i¼fr osQ vuqlkj Toyu'khyrk izfrjksèk ijh{k.k fd;ktk,A [kksy dh lkexzh ykS dks nwj djus osQ 5 lsdaMksa osQ cknykS osQ lkFk u tysA

8-4 fo|qrh; izfrjksfèkrk 8-4 fo|qrh; izfrjksfèkrk 8-4 fo|qrh; izfrjksfèkrk 8-4 fo|qrh; izfrjksfèkrk 8-4 fo|qrh; izfrjksfèkrk μ gsyesV osQ [kksy dk vuqcaèk Nesa fu£n"V i¼fr osQ vuqlkj fo|qr izfrjksèk ijh{k.k fd;ktk,A og 3 mA ls vfèkd yhdst djsaV u n'kkZ,A

8-5 ty vo'kks"k.k 8-5 ty vo'kks"k.k 8-5 ty vo'kks"k.k 8-5 ty vo'kks"k.k 8-5 ty vo'kks"k.k μ gsyesV osQ [kksy dk vuqcaèk t esa fufnZ"Vi¼fr osQ vuqlkj ty vo'kks"k.k ijh{k.k fd;k tk, vkSj og viusnzO;eku osQ 5 izfr'kr ls vfèkd ikuh vo'kksf"kr u djsA

8-6 rki izfrjksfèkrk 8-6 rki izfrjksfèkrk 8-6 rki izfrjksfèkrk 8-6 rki izfrjksfèkrk 8-6 rki izfrjksfèkrk μ gsyesV osQ [kksy dk vuqcaèk HkQ esa

6

vkbZ,l@IS 2925 : 1984

for heat resistance in accordance with method specifiedin Appendix J, and the shell shall not separate, distortor soften.

9 SAMPLING AND CRITERIA FOR CONFORMITY

9.1 The method of sampling and criteria for conformityshall be as specified in IS 9695 : 1980 ‘Methods forsampling of helmets’.

10 MARKING

10.1 Each helmet (shell and harness) shall be legiblyand indelibly marked with the following information:

a) Manufacturer’s name or trade-mark, andb) Range/Size of helmet.

10.1.1 BIS Certification Marking

The helmets may also be marked with the ISICertification Mark.

10.1.2 The use of the Standard Mark is governed bythe provisions of Bureau of Indian Standards Act, 1986and the Rules and Regulations made thereunder. Thedetails of conditions under which the licence for theuse of Standard Mark may be granted to manufacturersor producers may be obtained from the Bureau of IndianStandards.

11 INSTRUCTIONS

11.1 Each helmet shall be clearly and indelibly markedas follows either on helmet shell or on a label seurelyaffixed or securely attached:

a) For adequate protection this helmet shall fitor be adjustable closely to the required size,

b) This helmet is made to absorb some of theenergy of a blow by partial destruction of itscomponent parts and even though damage maynot be readily apparent any helmet subject tosevere impact should be replaced, and

c) To maintain full efficiency of this helmet thereshall be no alteration to the structure of thehelmet or its component parts.

fu£n"V i¼fr osQ vuqlkj rki izfrjksèk ijh{k.k fd;k tk, vkSjog vyx u gks] fo:fir u gks] vFkok uje u iM+sA

9 uewu s ysuk vk Sj vuq:irk osQ ekinaM9 uewu s ysuk vk Sj vuq:irk osQ ekinaM9 uewu s ysuk vk Sj vuq:irk osQ ekinaM9 uewu s ysuk vk Sj vuq:irk osQ ekinaM9 uewu s ysuk vk Sj vuq:irk osQ ekinaM

9-1 9-1 9-1 9-1 9-1 uewus yssus dh i¼fr vkSj vuq:irk osQ ekinaM vkbZ,l9695 % 1980 ̂ gSyesVksa osQ uewus ysus dh i¼fr;k¡* osQ vuqlkjgksaA

10 fpãk ¡du10 fpãk ¡du10 fpãk ¡du10 fpãk ¡du10 fpãk ¡du

10-1 10-1 10-1 10-1 10-1 izR;sd gsyesV ([kksy vkSj gkusZl) ij fuEufyf[krlwpuk Li"V vkSj vfeV :i ls fy[kh tk,%

d) fuekZrk dk uke vkSj VªsM&ekdZ] vkSj

[k) gsyesV dk jsat@lkbtA

10-1-1 10-1-1 10-1-1 10-1-1 10-1-1 Hkk- ek- C;wjks izek.ku eksgjkadu

gsyesVksa ij vkbZ,lvkbZ izek.ku eqgj Hkh yxkbZ tk ldrhgSA

10-1-2 10-1-2 10-1-2 10-1-2 10-1-2 ekud eqgj dk mi;ksx Hkkjrh; ekud C;wjks vfèkfu;e]1986 vkSj mlosQ vèkhu cus fu;eksa vkSj fofu;eksa osQizkoèkkuksa vuqlkj gksA fuekZrkvksa vkSj laLdÙkkZvksa dks ftu 'krks±osQ vèkhu ekud eqgj yxkus osQ fy, ykblsal fn;k tkrk gSmldk fooj.k Hkkjrh; ekud C;wjks ls izkIr fd;k tk ldrkgSA

11 fun s Z'k11 fun s Z'k11 fun s Z'k11 fun s Z'k11 fun s Z'k

11-1 11-1 11-1 11-1 11-1 izR;sd gsyesV ij fuEufyf[kr lwpuk ;k rks mlosQ[kksy ij vFkok mlosQ lkFk vPNh rjg fiQV fd, x, ;kyxk, x, yscy ij Li"V o vfeV :i ls vafdr gks%

d) i;kZIr cpko osQ fy, ;g gsyesV visf{kr lkbt ijfiQV gksxk vFkok lek;kstuh; gksxk]

[k) ;g gsyesV blosQ la?kVd Hkkxksa dh vkaf'kd {kfr}kjk dqN mQtkZ vo'kksf"kr djus osQ fy, cuk;k x;kgSA ,slh {kfr vklkuh ls n`';eku u Hkh gks] xaHkhjiz?kkr ls xqtjs gsyesV dks cny fn;k tk,] vkSj

x) bl gsyesV dh iw.kZ n{krk cuk, j[kus osQ fy,bldh vFkok blosQ la?kVd Hkkxksa dh lajpuk esadksbZ ifjorZu u fd;k tk,A

7

vkbZ,l@IS 2925 : 1984

vuqcaèk dvuqcaèk dvuqcaèk dvuqcaèk dvuqcaèk d([kaM 3-3)

èkkrq osQ Hkkxks a dh la{kkj.k izfrjksfèkrk ijh{k.k dh i¼frèkkrq osQ Hkkxks a dh la{kkj.k izfrjksfèkrk ijh{k.k dh i¼frèkkrq osQ Hkkxks a dh la{kkj.k izfrjksfèkrk ijh{k.k dh i¼frèkkrq osQ Hkkxks a dh la{kkj.k izfrjksfèkrk ijh{k.k dh i¼frèkkrq osQ Hkkxks a dh la{kkj.k izfrjksfèkrk ijh{k.k dh i¼fr

APPENDIX A(Clause 3.3)

METHOD OF TESTING CORROSION RESISTANCE OF METAL PARTS

ddddd-1 uewu s1 uewu s1 uewu s1 uewu s1 uewu s

ddddd -1-1 1 -1 1 -1 1 -1 1 -1 uewuksa dk p;u 9-19-19-19-19-1 osQ vuqlkj fd;k tk,A

ddddd -2 çfØ;k2 çfØ;k2 çfØ;k2 çfØ;k2 çfØ;k

ddddd-2-1 2-1 2-1 2-1 2-1 uewuksa dks d{k rkieku (25° ls 35°lsa-) ij yxkrkj24 ?kaVksa rd 0-5 Hkkx vklqr ty esa 5 Hkkx lksfM;e DyksjkbM(nzO;eku osQ vuqlkj) ls Lizs djsaA blosQ ckn blosQ Hkkxksa dkscgrs gq, lkiQ ikuh ls èkks,¡ vkSj lq[kk,¡A la{kkj.k osQ laosQr ns[ksaA

A-1 SAMPLESA-1.1 The samples shall be selected as in 9.1.

A-2 PROCEDURE

A-2.1 Spray the specimens with a solution of 5 parts ofsodium chloride to 0.5 parts of distilled water (by mass)at room termperature (25° to 35°C) for a continuousperiod of 24 hours. Then wash the parts in clean runningwater, and dry. Inspect for signs of corrsion.

vuqcaèk [kvuqcaèk [kvuqcaèk [kvuqcaèk [kvuqcaèk [k([kaM 5-2-2)

flj vkSj iguko m¡QpkbZ (fiQV dh xgjkbZ) osQ mQij fDy;jsal tk¡pus dh i¼frflj vkSj iguko m¡QpkbZ (fiQV dh xgjkbZ) osQ mQij fDy;jsal tk¡pus dh i¼frflj vkSj iguko m¡QpkbZ (fiQV dh xgjkbZ) osQ mQij fDy;jsal tk¡pus dh i¼frflj vkSj iguko m¡QpkbZ (fiQV dh xgjkbZ) osQ mQij fDy;jsal tk¡pus dh i¼frflj vkSj iguko m¡QpkbZ (fiQV dh xgjkbZ) osQ mQij fDy;jsal tk¡pus dh i¼fr

APPENDIX B(Clause 5.2.2)

METHOD OF CHECKING CLEARANCE ABOVE THE HEAD AND THE WEARING HEIGHT(DEPTH OF FIT)

B-1 SAMPLESB-1.1 The samples shall be selected as in 9.1.

B-2 CLEARNACE ABOVE THE HEADB-2.1 In the case of helmet which has reinforcing ribs,measure the depth of rib and correct the measuredclearance accordingly. Mount the helmet on a headform(see IS 7692 : 1975 ‘Specification for woodenheadform for testing of helmets’) corresponding to thesize of headband marked on the helmet, in a positionsimilar to that which it would occupy on a man’s head.Apply a load of 10 kg, to the top of the helmet (this canbe conveniently applied by using a 10 kg bag of sand).Measure the clearance by means of a rod of diameternot more than 10 mm inserted through the hole drilledin the vertical axis of the headform.

B-3 WEARING HEIGHT (DEPTH OF FIT)B-3.1 Mount the helmet on headform correspondingto the size of headband marked on the helmet and applya pressure of 10 kg as in B-2.1. Mark on the headformthe position of the lower edge of the headband. Removethe helmet and measure the vertical distance betweenthe top of the headform and the mark showing theposition concupied by the headband.

[k[ k[ k[ k[ k-uewusuewusuewusuewusuewus

[ k[ k[ k[ k[ k-1 -1 1 -1 1 -1 1 -1 1 -1 uewus 9-19-19-19-19-1 ds vuqlkj pqus tk,¡A

[ k[ k[ k[ k[ k-2 flj ds Åij fDy;js al2 flj ds Åij fDy;js al2 flj ds Åij fDy;js al2 flj ds Åij fDy;js al2 flj ds Åij fDy;js al

[k[k[k[k[k-2-12-12-12-12-1 ftl gsyesV esa izcyu /kfj;k¡ gksa] mldh /kfj;ksadh xgjkbZ ekisa vkSj ekih xbZ fDy;jsal dks rnuqlkj BhddjsaA gsyesV dks mlds Åij fpfÉr gSMcSaM ds lkbt dslanHkZ gSMiQkeZ (ns[ksa vkbZ,l 7692 % 1975 ^gsyesVksa osQijh{k.k osQ fy, ydM+h osQ gSMiQkeZ dh fof'kf"V*) mlfLFkfr esa j[ksa] ftl fLFkfr esa ;g flj ij jgrk gSA gsyesVij 10 fdxzk- dk Hkkj j[ksa (blds fy, jsr dk 10 fdxzk-dk cksjk j[kk tk ldrk gS)A gSMiQkseZ ds ÅèotZ v{k esa Nsndjds 10 feeh- ls vufèkd O;kl okyh NM+ MkydjfDy;jsal ekih tk ldrh gSA

[ k[ k[ k[ k[ k-3 iguko Å¡pkb Z (fiQV dh xgjkb Z)3 iguko Å¡pkb Z (fiQV dh xgjkb Z)3 iguko Å¡pkb Z (fiQV dh xgjkb Z)3 iguko Å¡pkb Z (fiQV dh xgjkb Z)3 iguko Å¡pkb Z (fiQV dh xgjkb Z)

[k[k[k[k[k-3-13-13-13-13-1 gsyesV dks gSMcSaM ij fpfÉr gSMcSaM ds lkbt dslaxr gSMiQkeZ ij j[ksaA [k[k[k[k[k-2-12-12-12-12-1 vuqlkj 10 fdxzk- otuj[ksa] gSMcSaM ds fupys fdukjs dh fLFkfr gsyesV ij ekdZdjsaA gsyesV dks gVk,¡ vkSj gSMiQkseZ ds Åijh Hkkx rFkkgSMcSaM dh fLFkfr n'kkZus okys fpÉ ds eè; ÅèoZ nwjhekisaA

8

vkbZ,l@IS 2925 : 1984

vuqcaèk xvuqcaèk xvuqcaèk xvuqcaèk xvuqcaèk x([kaM 5-3-1)

BksMh iQhrs dh lkeF;Z dk ijh{k.kBksMh iQhrs dh lkeF;Z dk ijh{k.kBksMh iQhrs dh lkeF;Z dk ijh{k.kBksMh iQhrs dh lkeF;Z dk ijh{k.kBksMh iQhrs dh lkeF;Z dk ijh{k.k

xxxxx-1 ue wu s1 ue wu s1 ue wu s1 ue wu s1 ue wu s

xxxxx-1-1 1-1 1-1 1-1 1-1 ijh{k.k osQ fy, uewuksa dk p;u 9-19-19-19-19-1 osQ vuqlkj fd;ktk,A

xxxxx-2 i z fØ;k2 i z fØ;k2 i z fØ;k2 i z fØ;k2 i z fØ;k

xxxxx-2-1 2-1 2-1 2-1 2-1 gsyesV dk mi;qDr gSMiQkseZ (ns[ksa vkbZ,l 7692 % 1975^gsyesVksa osQ ijh{k.k osQ fy, ydM+h osQ gSMiQkeZ dh fof'kf"V*)lkekU; fLFkfr dh Hkk¡fr BksMh iQhrk dldj j[kk tkrk gSA

xxxxx-2-22-22-22-22-2 BksMh iQhrs ij S gqd ls 10 kgf dk Hkkj yVdk;ktk,A 5 feuVksa osQ ckn ;g BksMh iQhrk VwVs uA

xxxxx-2-32-32-32-32-3 bl dk;Z osQ fy, iz;qDr S gqd dqy yxHkx 100feeh- mQ¡pk] 50 feeh- pkSM+k gks vkSj 10 vFkok 12 feeh-bLikr lfj;s ls cuk gksA

APPENDIX C(Clause 5.3.1)

TEST FOR STRENGTH OF CHIN STRAP

C-1 SAMPLES

C-1.1 The samples for testing shall be selected as givenin 9.1.

C-2 PROCEDURE

C-2.1 The helmet is placed on the appropriate headform(see IS 7692 : 1975 ‘Specification for wooden headformfor testing of helmets’) with the chin strap fastened asin normal position.

C-2.2 A load of 10 kgf will be applied to the chin strapthrough S hook. After 5 minutes the chin strap shallnot break.

C-2.3 The S hook to be used in this set up shall beapproximately 100 mm overall height, 50 mm overallwidth and will be made from 10 or 12 mm steel rod.

APPENDIX D(Clause 8.1)

SHOCK ABSORPTION TEST

vuqcaèk ?kvuqcaèk ?kvuqcaèk ?kvuqcaèk ?kvuqcaèk ?k([kaM 8-1)

ç?kkr vo'kks"k.k ijh{k.kç?kkr vo'kks"k.k ijh{k.kç?kkr vo'kks"k.k ijh{k.kç?kkr vo'kks"k.k ijh{k.kç?kkr vo'kks"k.k ijh{k.k

? k? k? k? k? k-1 ue wu s1 ue wu s1 ue wu s1 ue wu s1 ue wu s

? k? k? k? k? k-1 -1 1 -1 1 -1 1 -1 1 -1 uewuksa dk p;u 9-19-19-19-19-1 osQ vuqlkj fd;k tk,A

? k? k? k? k? k-2 midj.k2 midj.k2 midj.k2 midj.k2 midj.k

? k? k? k? k? k-2-1 ydM+h dk gSMiQk se Z 2-1 ydM+h dk gSMiQk se Z 2-1 ydM+h dk gSMiQk se Z 2-1 ydM+h dk gSMiQk se Z 2-1 ydM+h dk gSMiQk se Z μ ydM+h osQ gSMiQkseZ(ns[ksa vkbZ,l 7692 % 1975 ^gsyesVksa osQ ijh{k.k osQ fy,ydM+h osQ gSMiQkseZ dh fof'kf"V*) dk iz;ksx fd;k tk,A

?k?k?k?k?k-2-2 ekiu cy osQ fy, xst vkSj fjdkWMZ djus dk2-2 ekiu cy osQ fy, xst vkSj fjdkWMZ djus dk2-2 ekiu cy osQ fy, xst vkSj fjdkWMZ djus dk2-2 ekiu cy osQ fy, xst vkSj fjdkWMZ djus dk2-2 ekiu cy osQ fy, xst vkSj fjdkWMZ djus dkmidj.k midj.k midj.k midj.k midj.k μ xst vkSj lac¼ fjdkW²Mx midj.k mi;qDrVkbedaLVsaV osQ gksa] ftlls os cy iz;ksx osQ le; Lora=k jgdj40 kN (4 080 kgf) balisDV yksfMax vkSj mlosQ va'kkaduosQ fy, visf{kr Hkkj osQ ean vuqiz;ksx dh baisDV yksfMax dkseki ldsA xst dh U;wure vuE;rk 500 kN/mm (51 tf/mm) gksA gsMiQkseZ dks xst ij bl izdkj yxk;k tk, fd

D-1 SAMPLES

D-1.1 The samples shall be selected as given in 9.1.

D-2 APPARATUS

D-2.1 Wooden Headform — A wooden headform (seeIS 7692 : 1975 ‘Specification for wooden headform fortesting of helmets’) shall be used.

D-2.2 A Gauge and Recording Apparatus forMeasuring Force — The gauge and the associatedrecording apparatus shall have proper time constant tobe able to measure the impact loading up to 40 kN(4 080 kgf) independent of time of application of theforce and a slow application of the load required for itscalibration. The gauge shall have a minimum stiffnessof 500 kN/mm (51 tf/mm). The headform shall be

9

vkbZ,l@IS 2925 : 1984

mounted on the gauge so that its vertical axis throughthe crown coincides with the vertical axis of the gauge.

D-2.3 Accuracy — The overall accuracy of therecording apparatus shall be 10 percent.

D-2.4 Block — Concrete or similar monolithic blockto support the gauge and headform having the minimumdimensions: height 1 m, length 1 m, width 0.6 m andmass 1 t. The block shall be bedded on dry sand on asolid floor.

D-2.5 Striker — A striker in a the form of a rectangularblock of wood weighing 3 kg and having a horizontalstriking face 180 mm × 180 mm. The striker shall slidefreely and without oscillation down two vertical guidewires so positioned that the centre of gravity of thestriker lies on the vertical axis of the gauge and bothlie in the plane of the guide wires.

D-3 METHODD-3.1 The helmet with apex cushioning material, if any,removed shall be mounted on the headform, ofappropriate size. The striker shall be raised to a clearheight of 1.5 m ± 5 mm above the point of contact withthe helmet and allowed to fall freely. A photegraphicor other high speed record of the force transmittedduring impact shall be made.

Økmu ls xqtjrk gqvk bldk mQèokZèkj v{k xst osQ mQèokZèkjv{k ls esy [kk,¡A

?k?k?k?k?k-2-3 lVhdrk 2-3 lVhdrk 2-3 lVhdrk 2-3 lVhdrk 2-3 lVhdrk μ fjdkWMZ djus okys midj.k dh lexzlVhdrk 10 izfr'kr gksA

?k?k?k?k?k-2-4 CykWd 2-4 CykWd 2-4 CykWd 2-4 CykWd 2-4 CykWd μ xst rFkk gSMiQkseZ dks lgkjk nsus osQ fy, daØhVdk vFkok iRFkj osQ ,d VqdM+s dk CykWd] ftlosQ U;wure vk;kebl izdkj gksa% mQ¡pkbZ 1 ehVj yEckbZ 1 ehVj, pkSMkbZ 0-6 ehVjvkSj nzO;eku 1 Vu CykWd dks Bksl iQ'kZ esa lq[ks jsr ls laLrfjrfd;k tk,A

?k?k?k?k?k-2-5 LVªkbdj 2-5 LVªkbdj 2-5 LVªkbdj 2-5 LVªkbdj 2-5 LVªkbdj μ ydM+h osQ vk;rkdkj CykWd dk LVªkbdj]ftldk Hkkj 3 fdxzk- gks vkSj ftldk LVªkbd djus dk {kSfrtry 180 × 180 fefe- gksA LVªkbdj nks mQèokZèkj xkbM rkjksa lseqDr :i ls vkSj fcuk fdlh nksyu osQ fiQlysA xkbM rkjksa dhfLFkfr bl izdkj gks fd LVªkbdj dk xq:Ùo dsUnz xst osQmQèokZèkj v{k ij gks vkSj nksuksa xkbM rkjksa osQ Iysu esa gksA

? k? k? k? k? k-3 fofèk3 fofèk3 fofèk3 fofèk3 fofèk

?k?k?k?k?k-3-13-13-13-13-1 gsyesV dh dq'kfuax lkexzh] ;fn dksbZ gks gVkdjmi;qDr lkbt osQ gSMiQkseZ ij yxk;k tk,A LVªkbdj dksgsyesV osQ lEidZ LFkku ls 1-5 eh- ± 5 feeh- mQij Li"VmQ¡pkbZ rd ys tkdj eqDr :i ls NksM+ fn;k tk,A bl iz?kkrosQ nkSjku mRl£tr cy dk iQksVksxzkiQh vFkok fdlh vU;izdkj ls gkbZ LihM fjdkWMZ j[kk tk,A

APPENDIX E(Clause 8.2)

METHOD OF TESTING PENETRATION RESISTANCE

vuqcaèk Ävuqcaèk Ävuqcaèk Ävuqcaèk Ävuqcaèk Ä([kaM 8-2)

Hksnu izfrjksèk ijh{k.k dh i¼frHksnu izfrjksèk ijh{k.k dh i¼frHksnu izfrjksèk ijh{k.k dh i¼frHksnu izfrjksèk ijh{k.k dh i¼frHksnu izfrjksèk ijh{k.k dh i¼fr

ÄÄÄÄÄ -1 ue wu s1 ue wu s1 ue wu s1 ue wu s1 ue wu s

ÄÄÄÄÄ-1-1 1-1 1-1 1-1 1-1 ijh{k.k osQ fy, uewus dk p;u 9-19-19-19-19-1 osQ vuqlkj fd;ktk, vkSj mldk 8-18-18-18-18-1 dh ml voLFkk esa ijh{k.k fd;k tk,ftlesa lcls [kjkc ifj.kke vk, gksa (ns[ksa 8-28-28-28-28-2)A

ÄÄÄÄÄ -2 i z fØ;k2 i z fØ;k2 i z fØ;k2 i z fØ;k2 i z fØ;k

ÄÄÄÄÄ-2-1 2-1 2-1 2-1 2-1 gsyesV dks fdlh Hkh gSMiQkseZ (ns[ksa vkbZ,l 7692 % 1975^gsyesVksa osQ ijh{k.k osQ fy, ydM+h osQ gSMiQkseZ dh fof'kf"V*)ij yxk,¡A 500 xzke nzO;eku okys lkgqy dks eqDr :i lsfxjk,¡A lkgqy dk 'kadq okyk bLikr fcanq 36º var£o"V dks.kokyk gks vkSj mlosQ xksykdkj fcanq dk vèkZO;kl 0-5 feeh- lsvfèkd u gksA lkgqy 3-0 ehVj dh Li"V mQ¡pkbZ ls IokbaV okysfljs dks fupyh vksj djosQ gsyesV osQ Økmu osQ mQij fxjk;ktk,A gsyesV esa Nsn gksus vFkok xM~<k i<+us] mlosQ fdUghavarjax Hkkxkas osQ isQy gksus bR;kfn dh tk¡p dh tk,A

E-1 SAMPLE

E-1.1 The sample for testing shall be selected as givenin 9.1 and shall be tested in one of the conditions givenin 8.1 which has given worst result (see 8.2) .

E-2 PROCEDURE

E-2.1 Mount helmet on any headform (seeIS 7692 : 1975 ‘Specification for wooden headform fortesting of helmets’). Drop freely a plumb bob of 500 gmass with a conical steel having an included angle of36° and a spherical point radius of not more than 0.5mm from a clear height of 3.0 m with the pointed enddownwards on to the top of the crown of the helmet.Examine the helmet for piercing or denting, failure ofany integral parts, etc.

10

vkbZ,l@IS 2925 : 1984

APPENDIX G(Clause 8.4)

METHOD OF TESTING ELECTRICAL RESISTANCE

vuqcaèk Nvuqcaèk Nvuqcaèk Nvuqcaèk Nvuqcaèk N([kaM 8-4)

fo|qrh; izfrjksèk ijh{k.k dh i¼frfo|qrh; izfrjksèk ijh{k.k dh i¼frfo|qrh; izfrjksèk ijh{k.k dh i¼frfo|qrh; izfrjksèk ijh{k.k dh i¼frfo|qrh; izfrjksèk ijh{k.k dh i¼fr

NNNNN-1 ue wu s1 ue wu s1 ue wu s1 ue wu s1 ue wu s

NNNNN-1-11-11-11-11-1 ijh{k.k osQ fy, uewuksa dk p;u 9-1 9-1 9-1 9-1 9-1 osQ vuqlkj fd;ktk,A

NNNNN-2 i z fØ;k2 i z fØ;k2 i z fØ;k2 i z fØ;k2 i z fØ;k

NNNNN-2-1 2-1 2-1 2-1 2-1 gsyesV dks mYVk djosQ fdlh mi;qDr èkkjd esa çsQeij j[ksaA èkkjd vkSj gsyesV dks ikuh esa lksfM;e DyksjkbM dh6 g/1 ek=kk okyk ?kksy fdukjs vkSj Mkse osQ taD'ku osQ12 feeh- rd vFkok ;fn gsyesV esa Nsn gksa rks mu osQ

G-1 SAMPLES

G-1.1 The samples for testing shall be selected as givenin 9.1.

G-2 PROCEDURE

G-2.1 Invert the helmet and place it on a frame in a suitablecontainer. With a solution of 6 g/l of sodium chloride inwater, in the container and the helmet to within 12 mm ofthe junction of the brim and the dome, or, if the helmet isprovided with holes to a depth of 12 mm below the holes.

vuqcaèk pvuqcaèk pvuqcaèk pvuqcaèk pvuqcaèk p([kaM 8-3)

Toyu'khyrk izfrjksèk ijh{k.k dh i¼frToyu'khyrk izfrjksèk ijh{k.k dh i¼frToyu'khyrk izfrjksèk ijh{k.k dh i¼frToyu'khyrk izfrjksèk ijh{k.k dh i¼frToyu'khyrk izfrjksèk ijh{k.k dh i¼fr

APPENDIX F(Clause 8.3)

METHOD OF TESTING FLAMMABILITY RESISTANCE

F-1 SAMPLEF-1.1 The samples for testing shall be selected as givenin 9.1.

F-2 BURNERF-2.1 Burner shall be operated with the valve so as toget a flame height of 150 mm. Satisfactory operationof burner shall be checked by inserting in the flame,the bare copper wire of 0.71 mm diameter having afree length of not less than 100 mm in position normallyoccupied by low edge of the test piece, that is, 50 mmabove the burner and reaching farther edge of the flame.The wire should not take more than 6 seconds to melt.

F-3 PROCEDUREF-3.1 With the helmet upside down, and the burnerangled at 45° to the vertical, the end of the flame shallbe applied to the outside of the shell at any suitablepoint between 50 and 100 mm from the crown for aperiod of 10 seconds. The plane tangential to the testpoint shall be horizontal.

F-3.2 The shell shall be examined for flamming 5seconds removal of the flame.

ppppp-1 ue wu s1 ue wu s1 ue wu s1 ue wu s1 ue wu s

ppppp-1-1 1-1 1-1 1-1 1-1 ijh{k.k osQ fy, uewuksa dk p;u 9-19-19-19-19-1 osQ vuqlkjfd;k tk,A

ppppp-2 cu Z j2 cu Z j2 cu Z j2 cu Z j2 cu Z j

ppppp-2-1 2-1 2-1 2-1 2-1 cuZj dks okYo osQ lkFk izpkfyr fd;k tk,] rkfd150 feeh- mQ¡ph ykS izkIr dh tk losQA cuZj osQ larks"ktudizpkyu dh tk¡p ykS esa 0-71 feeh- O;kl dk rkEcs dk uaxkrkj Mkydj dh tk,A bl rkj dh eqDr yEckbZ 100 feeh- lsde u gksA rkj dks ml fLFkfr esa j[kk tk, ftl fLFkfr esavke rkSj ij ijh{k.k uewuksa dk fupyk fdukjk jgrk gS vFkkZrcuZj ls 50 feeh- mQij vkSj ykS osQ nwjLFk fdukjs rdA rkjdks fi?kyus esa 6 lsdaM ls vfèkd le; u yxsA

ppppp-3 çfØ;k3 çfØ;k3 çfØ;k3 çfØ;k3 çfØ;k

ppppp-3-13-13-13-13-1 gsyesV dk mQijh Hkkx uhps dh vksj oQjosQ vkSj cuZjdks mQèoZ fLFkfr ls 45º ij >qdkdj ykS osQ vkf[kjh fgLls dkslsy osQ ckgjh Hkkx ij Økmu ls 50 ls 100 feeh- osQ chpfdlh Hkh LFkku ij 10 lsdaMksa rd yxk;k tk,A ijh{k.k fcanqdk Li'kZ ry {kSfrt gksA

ppppp-3-2 3-2 3-2 3-2 3-2 [kksy dh] ykS ls gVkus osQ 5 lsdaM ckn rd] tyusdh tk¡p dh tk,A

11

vkbZ,l@IS 2925 : 1984

Allow the helmet to remain in the solution for a period of18 to 24 hours and maintain the temperature of 25° to35°C during this period. Then apply an alternating voltageof 2 000 V (rev/s) at 50 Hz and of approximately sinewave form, for one minute between electrodes placed inthe solution inside and outside the helmet respectively. Ifno electrical breakdown occurs, disconnect the highvoltage supply and connect a milliammeter in the circuiton each side of the electrode. Raise the test voltage slowlyobserving the ammeter reading, until the applied voltageis 2 000 V. An automatic tripping device may be used inthe circuit in addition to the milliammeter.

12 feeh- uhps rd MkysaA gsyesV dks bl ?kksy esa 18 ls 24?kaVksa rd jgus nsa vkSj bl nkSjku 25° ls 35°ls- rd dkrkieku cuk, j[ksaA mlosQ ckn gsyesV osQ vUnj o ckgj?kksy esa j[kh bysDVªksMksa osQ chp 1 feuV rd 50 Hz dh2 000 V (pDdj izfr lsdaM) vkSj yxHkx lkbuoso iQkseZdh izR;korhZ oksYVrk xqtkjsaA ;fn fctyh u oQVs rks mPPkoksYVrk lIykbZ dks dkV nsa vkSj bysDVªksM osQ nksuksa vksjl£dV esa ,d fefy,ehVj tksM+ nsaA ijh{k.k oksYVrk dksèkhjs&èkhjs c<+k,¡ vkSj og 2 000 V gks tkus rd ,ehVj dhjhfMax ns[krs jgsaA l£dV esa fefy,ehVj osQ vfrfjDr fctyhdVus dh Lopkfyr ;qfDr dk iz;ksx fd;k tk ldrk gSA

APPENDIX H(Clause 8.5)

METHOD OF TESTING WATER ABSORPTION

vuqcaèk tvuqcaèk tvuqcaèk tvuqcaèk tvuqcaèk t([kaM 8-5)

ty vo'kks"k.k ijh{k.k dh i¼frty vo'kks"k.k ijh{k.k dh i¼frty vo'kks"k.k ijh{k.k dh i¼frty vo'kks"k.k ijh{k.k dh i¼frty vo'kks"k.k ijh{k.k dh i¼fr

ttttt-1 ue wu s1 ue wu s1 ue wu s1 ue wu s1 ue wu s

ttttt-1-1 1-1 1-1 1-1 1-1 ijh{k.k osQ fy, mu uewuksa dk iz;ksx fd;k tk, ftudk iz;ksx 8-8-8-8-8-11111([k) dh voLFkk esa iz?kkr vo'kks"k.k osQ fy,fd;k x;k gks (ns[ksa 9-19-19-19-19-1)A

ttttt-2 i zfØ;k2 i z fØ;k2 i z fØ;k2 i z fØ;k2 i z fØ;k

ttttt-2-1 2-1 2-1 2-1 2-1 otu ,oa uewuk (iwjk [kksy) ysaA 25° lss 35°lsa-rkieku osQ ikuh esa 24 ?kaVksa rd Mqcks,¡A ikuh ls fudkysa]lrgksa dks ikSaN dj lkiQ dj ysa vkSj nqckjk rksysaA nzO;eku esavkSlr c<+ksrjh dks izfr'kr osQ :i esa crk,¡A

H-1 SAMPLES

H-1.1 The samples which have been used for shockabsorption in condition 8.1(b) shall be used for carryingout this test (see 9.1).

H-2 METHOD

H-2.1 Weigh the sample (full shell). Immerse for 24hours in water, at a temperature of 25° to 35°C. Removefrom water, dry the surfaces by wiping them, and weighthem again. Report the average gain in mass as apercentage.

APPENDIX J(Clause 8.6)

METHOD OF TESTING HEAT RESISTANCE

vuqcaèk HkQvuqcaèk HkQvuqcaèk HkQvuqcaèk HkQvuqcaèk HkQ([kaM 8-6)

mQ"ek izfrjksèk ijh{k.k dh i¼frmQ"ek izfrjksèk ijh{k.k dh i¼frmQ"ek izfrjksèk ijh{k.k dh i¼frmQ"ek izfrjksèk ijh{k.k dh i¼frmQ"ek izfrjksèk ijh{k.k dh i¼fr

J-1 SAMPLESJ-1.1 The samples for testing shall be selected as givenin 9.1.

J-2 PROCEDUREJ-2.1 Place the shell for 15 minutes in an ovenmaintained at a temperature of 93 ± 5°C. The shell shallbe shielded from direct radiation during the test.Remove the shell from the oven and examine forseparation, distortion or softening.

H k QH k QH k QH k QH k Q-1 ue wu s1 ue wu s1 ue wu s1 ue wu s1 ue wu sHkQHkQHkQHkQHkQ-1-1 1-1 1-1 1-1 1-1 ijh{k.k osQ fy, uewuksa dk p;u 9-19-19-19-19-1 osQ vuqlkjfd;k tk,A

Hk QH k QH k QH k QH k Q-2 çfØ;k2 çfØ;k2 çfØ;k2 çfØ;k2 çfØ;k

HkQ&2-1 HkQ&2-1 HkQ&2-1 HkQ&2-1 HkQ&2-1 [kksy dks vksou esa 93 ± 5°lsa- rkieku ij 15feuVksa rd j[ksaA ijh{k.k osQ nkSjku [kksy dks izR;{k :i ls rkiyxus ls cpk,¡A vksou ls [kksy fudky ysa vkSj blosQ vyxgksus] foÑr gksus vFkok uje iM+us dh tk¡p djsaA

12

vkbZ,l@IS 2925 : 1984

vuqcaèk ×kvuqcaèk ×kvuqcaèk ×kvuqcaèk ×kvuqcaèk ×k(izkDdFku)

rduhdh lfefr dk xBurduhdh lfefr dk xBurduhdh lfefr dk xBurduhdh lfefr dk xBurduhdh lfefr dk xBu

vfXu 'keu fo"k; lfefr] chMhlh 22

vè;{kJh th- ch- esuu

lSDVj 12] 1242] vkj- ds- iqjeubZ fnYyh 110022

izfrfuèkku lnL;

n bafLVV~;w'kWu vkWiQ iQk;j bathfu;lZ (bafM;k)] ubZ fnYyh Jh ,- ,u- vkgyqokfy;kJh ch- vkj- esgrk (fodYih)

LVhy vFkkWfjVh vkWiQ bafM;k (cksdkjks LVhy IykaV)] cksdkjks LVhy flVh Jh ,l- vkj- caly

E;wfufliy dkWiksZjs'ku vkWiQ fnYyh] fnYyh phiQ iQk;j vkWfiQljJh vkj- osQ- Hkkj}kt (fodYih)

if'pe caxky] vfXu 'keu lsok] if'pe caxky ljdkj] dydÙkk Jh osQ- osQ- nkl xqIrk

jsy ea=kky; mi&egkfujh{kd (vkjih,lbZ)lgk;d lqj{kk vfèkdkjh (vfXu)] uknZu jsyos (fodYih)

j{kk ea=kky; (MhthvkbZ) Jh oh- ih- nhokuys-&duZ oh- vkj- ckukgkVh (fodYih)

HkkHkk ,Vksfed fjlpZ lsaVj] cEcbZ Jh vkj- vkj- /kscys

gkse (iqfyl) fMikVZesaV] vkaèkz izns'k ljdkj] gSnjkckn funs'kd (vfXu 'keu lsok,¡)mi funs'kd (vfXu 'keu lsok,¡) (fodYih)

gkse fMikVZesaV (vfXu 'keu lsok,¡)] rfeyukMq ljdkj] enzkl egkfuns'kdmi funs'kd (fodYih)

x`g ea=kky; vfXu 'keu lykgdkj

dsUnzh; Hkou vuqla/ku laLFkku (lh,lvkbZvkj)] #M+dh Jh ,- osQ- xqIrk

LVhyst baMLVªht fyfeVsM (fefuesDl fMfotu)] cEcbZ Jh ts- ,l- te'ksnthJh lh- ?kujkt (fodYih)

t;Jh VsDlVkbYl ,aM baMLVªht] fj'kjk Jh ih- [kUuk

vkW;y ,aM usP;qjy xSl deh'ku] nsgjknwu Jh oh- oh- fdEerdj

iQk;j ,aM lsÝVh ,Iykbafll dks] dydÙkk Jh ,l- ,u- dqaMq

,ou l£olsls (ih ,.M ,) izkbosV fy-] cEcbZ izcaèk funs'kdVsDuhdy ,DthD;wfVo (fodYih)

LVhy vFkkWfjVh vkWiQ bafM;k (jkmjosQyk] LVhy IykaV)] jkmjosQyk Jh ,e- eq[kthZJh lh- Mh- 'kekZ (fodYih)

E;qfufliy dkWiksZjs'ku vkWiQ xzsVj cEcbZ (cEcbZ iQk;j fczxsM)] cEcbZ Jh oh- ch- fude

lsaVªy baMfLVª;y lhD;ksjsVh iQkslZ (x`g ea=kky;)] ubZ fnYyh Jh ih- ,u- ikapky

iw£r ,oa fuiVku egkfuns'kd] ubZ fnYyh Jh Mh- ,u- iafMr

dwojth nso'kh ,aM oQa- izk-] fy-] cEcbZ Jh ih- ,p- lsBukJh ,u- Vh- iatkokuh (fodYih)

flaFksfVDl ,aM dsfedYt fy-] cjsyh Jh Mh- osQ- ljdkj

>sfuFk iQk;j l£olsl] cEcbZ Jh pUnzdkar ,e- 'kkgJh ,e- ,p- 'kkg (fodYih)

U;w,t baMLVªht] lqjsUnzuxj (xqtjkr) Jh ts- oh- 'kkgJh ch- ts- 'kkg (fodYih)

j{kk ea=kky; (vkj ,aM Mh) Jh ,e- ch- flagJh osQ- jkepUnzu (fodYih)

L;ksjsDl izkWMD'ku ,.M lsYl izk- fy-] dydÙkk Jh rfjr lwj

rduhdh fodkl egkfuns'kky;] ubZ fnYyh Jh lq'khy dqekj

13

vkbZ,l@IS 2925 : 1984

izfrfuèkku lnL;

VSjhiQ lykgdkj lfefr] cEcbZ Jh ts- ,u- odhyJh osQ- jfo (fodYih)

ukxj foekuu egkfuns'kky;] ubZ fnYyh Jh ,l- osadkLokeh

vjcu MsoyiesaV] ifCyd gsYFk gkmflax fMikVZesaV] egkjk"Vªk ljdkj Jh ch- oh- okxysJh oh- ,p- endfjdj (fodYih)

egkfuns'kd] chvkbZ,l (insu lnL;) Jh th- jkeu]funs'kd (flfoy baftfu;jh)

lfpoJh osQ- ,e- ekFkqj

ofj"B mi funs'kd (flfoy baftfu;jh)] (Hkk ek C;wjks)

gsyesV milfefr] chMhlh 22 % 5C;wjks vkWiQ iqfyl fjlpZ ,aM MsoyiesaV] ubZ fnYyh Jh ,l- osQ- vjksM+k

x`g ea=kky; vfXu lykgdkj

n ekbal l£ol dkWjiksZjs'ku] vklulksy Jh ih- ih- tSuJh ,- ih- vxzoky (fodYih)

[kku lqj{kk egkfuns'kky;] èkuckn [kku lqj{kk la;qDr funs'kd

U;w LVhy cMZ baMLVªht] ubZ fnYyh Jh jes'k diwjJh v'kksd diwj (fodYih)

xstsV~l bafM;k] iQjhnkckn Jh vkj- ch- [kqjkukJh ,e- ch- [kqjkuk (fodYih)

futh gSfl;r ls (lsDVj 12] 1242 vkj- osQ- iqje] ubZ fnYyh) Jh th- ch- esuu*

osQUnzh; [kuu vuqlaèkku LVs'ku (lh,lvkbZvkj)] èkuckn Jh ;w- ,l- fuxe

n vkWVkseksfVo fjlpZ ,lksfl,'ku vkWiQ bafM;k] iq.ks Jh ,l- jktw

dksudksMZ vjkbZ izkboV fyfeVsM] enzkl Jh vkj- jkekÑ".kuJh ch- jktxksiky (fodYih)

LVhy vFkkWfjVh vkWiQ bafM;k fy-] ubZ fnYyh Jh f'ko dqekj

j{kk ea=kky; (vkj ,aM Mh) Jh ,e- ch- flagJh osQ- jkepUnzu (fodYih)

flaFksfVDl ,.M dsfedyT+k fy-] cjsyh Jh Mh- ljdkj

*bl ekud dks vafre :i fn, tkus okyh cSBd osQ la;kstd osQ :i esa dk;Z fd;kA

© izfrfyI;fèkdkj 2011Hkkjrh; ekud C;wjks

;g izdk'ku Hkkjrh; izfrfyI;fèkdkj vfèkfu;e (1957 dk 14) osQ varxZr lajf{kr gS vkSj izdk'kd dh fyf[kr vuqefr osQ fcuk bldk fdlhHkh :i eas iw.kZ ;k vkaf'kd izdk'ku mDr vfèkfu;e osQ vèkhu izfrfyI;fèkdkj dk mYya?ku ekuk tk,xkA

fookn dh fLFkfr esa bl ekud dk vaxzsT+kh ikB gh ekU; gksxkAIn case of dispute English version of this standard shall be authentic.

14

vkbZ,l@IS 2925 : 1984

APPENDIX K(Foreword)

COMPOSITION OF THE TECHNICAL COMMITTEE

Fire Fighting Sectional Committee, BDC 22

ChairmanSHRI G. B. MENON

Sector 12, 1242, R.K. PuramNew Delhi 110022

Members Representing

The Institution of Fire Engineers (India), New Delhi SHRI A. N. AHLUWALIA

SHRI B. R. MEHTA (Alternate)

Steel Authority of India (Bokaro Steel Plant), Bokaro Steel City SHRI S. R. BANSAL

Muncipal Corporation of Delhi, Delhi CHIEF FIRE OFFICER

SHRI R. K. BHARDWAJ (Alternate)

West Bengal Fire Services, Government of West Bengal, Calcutta SHRI K. K. DAS GUPTA

Ministry of Railways DEPUTY INSPECTOR GENERAL (RPSE)ASSISTANT SECURITY OFFICER (FIRE), NORTHERN RAILWAY

(Alternate)

Ministry of Defence (DGI) SHRI V. P. DEWAN

LT-COL V. R. BANAHATI (Alternate)

Bhabha Atomic Research Centre, Bombay SHRI R.R. DHOBLEY

Home (Police) Department, Government of Andhra Pradesh, Hyderabad DIRECTOR (FIRE SERVICES)DEPUTY DIRECTOR (FIRE SERVICES) (Alternate)

Home Department (Fire Service), Government of Tamil Nadu, Madras DIRECTOR GENERAL

DEPUTY DIRECTOR (Alternate)

Ministry of Home Affairs FIRE ADVISER

Central Building Research Institute (CSIR), Roorkee SHRI A. K. GUPTA

Steelage Industries Limited (Minimax Division), Bombay SHRI J. S. JAMSHEDJI

SHRI C. GHANARAJ (Alternate)

Jayashree Textiles and Industries, Rishra SHRI P. KHANNA

Oil and Natural Gas Commission, Dehra Dun SHRI V. V. KIMMATAKAR

Fire and Safety Appliances Co, Calcutta SHRI S. N. KUNDU

Avon Services (P & A) Private Ltd, Bombay MANAGING DIRECTOR

TECHNICAL EXECUTIVE (Alternate)

Steel Authority of India (Rourkela Steel Plant), Rourkela SHRI M. MUKHERJI

SHRI C. D. SHARMA (Alternate)

Municipal Corporation of Greater Bomaby (Bombay Fire Brigade), Bombay SHRI V. B. NIKAM

Central Industrial Secutiry Force (Ministry of Home Affairs), New Delhi SHRI P. N. PANCHAL

Directorate General of Supplies and Disposals, New Delhi SHRI D. N. PANDIT

Kooverji Devshi and Co Pvt Ltd, Bombay SHRI P. H. SETHNA

SHRI N. T. PANJWANI (Alternate)

Synthetics and Chemicals Ltd, Bareily SHRI D. K. SIRKAR

Zenith Fire Services, Bombay SHRI CHANDRAKANT M. SHAH

SHRI M. H. SHAH (Alternate)

Newage Industries, Surendranagar (Gujarat) SHRI J. V. SHAH

SHRI B. J. SHAH (Alternate)

Ministry of Defence (R & D) SHRI M. B. SINGH

SHRI K. RAMACHANDRAN (Alternate)

Surex Production and Sales Pvt Ltd, Calcutta SHRI TARIT SUR

Directorate General of Technical Development, New Delhi SHRI SUSHIL KUMAR

15

vkbZ,l@IS 2925 : 1984

Members Representing

Traiff Advisory Committee, Bombay SHRI J. N. VAKIL

SHRI K. RAVI (Alternate)

Directorate General of Civil Aviation, New Delhi SHRI S. VENKASWAMY

Urban Development, Public Health, Housing Department, SHRI B. V. WAGLE

Goverrnent of Maharashtra SHRI V. H. MADKARIKAR (Alternate)

Director General, BIS (Ex-offcio Member) SHRI G. RAMAN,Director (Civ Engg)

SecretarySHRI K. M. MATHUR

Senior Deputy Director (Civ Engg), BIS

Helmets Subcommittee, BDC 22 : 5

Bureau of Police Research and Development, New Delhi SHRI S. K. ARORA

Ministry of Home Affairs FIRE ADVISER

The Mines Service Corporation, Asansol SHRI P. P. JAIN

SHRI A. P. AGARWAL (Alternate)

Directorate General of Mines Safety, Dhanbad JOINT DIRECTOR OF MINES SAFETY

New Steel Bird Industries, New Delhi SHRI RAMESH KAPOOR

SHRI ASHOK KAPOOR (Alternate)

Gadgets India, Faridabad SHRI R. B. KHURANA

SHRI M. B. KHURANA (Alternate)

In personal capacity (Sector 12, 1242 R.K. Puram, New Delhi) SHRI G. B. MENON*

Cenral Mining Research Station (CSIR), Dhanbad SHRI U. S. NIGAM

The Automotive Research Association of India, Pune SHRI S. RAJU

Concord Arai Private Limited, Madras SHRI R. RAMAKRISHNAN

SHRI B. RAJAGOPAL (Alternate)

Steel Authority of India Limited, New Delhi SHRI SHIV KUMAR

Ministry of Defence (R & D) SHRI M. B. SINGH

SHRI K. RAMACHANDRAN (Alternate)

Synthetics and Chemicals Ltd, Bareilly SHRI D. SIRKAR

*Acted as convener in the meeting in which this standard is finalized.

fookn dh fLFkfr esa bl ekud dk vaxzsT+kh ikB gh ekU; gksxkAIn case of dispute English version of this standard shall be authentic.

© Copyright 2011Bureau of Indian Standards

This publication is protected under the Indian Copyright Act (XIV of 1957) and reproduction in whole or in part byany means except with written permission of the publisher shall be deemed to be an infringement of copyrightunder the said Act.

bl ekud osQ fuèkkZj.k osQ fy, mÙkjnk;h lfefr dk xBu vuqcaèk ×k esa fn;k x;k gSA

;g ekud rS;kj djrs le; ekudksa esa varjkZ"Vªh; leUo; vkSj fofHkUu ns'kksa esa izpfyr jhfr;ksa dks fo'ks"k izkFkfedrk nsus osQvfrfjDr ns'k esa bl {ks=k esa izpfyr jhfr;ksa ls tksM+us ij fo'ks"k è;ku fn;k x;k gSA bl ekud esa nh xbZ dk;Zdkfjrk lacaèkhvis{kk,¡ vkbZ,lvks 3873 esa nh xbZ vis{kkvksa osQ led{k gSaA

;g fuf'pr djus osQ fy, fd bl ekud esa fdlh vis{kk fo'ks"k dk ikyu fd;k x;k gS ;k ugha] ijh{k.k ;k fo'ys"k.k osQifj.kke dks n'kkZus okys voyksdu ;k x.kuk }kjk izkIr vafre eku dks vkbZ,l 2 % 1960 ^la[;kRed ekuksa osQ iw.kk±du lacaèkhfu;e (iqujhf{kr)* osQ vuqlkj iw.kk±fdr dj fn;k tk,A iw.kk±fdr eku esa j[ks x, lkFkZd LFkkuksa dh la[;k mruh gh gks] ftruhbl ekud esa fu£n"V eku dh gSA

(Continued from second cover)

(nwljs doj ls tkjh)

The composition of the Committee responsible for the formulation of this standard is given in Annex K.

In the formulation of this standard, due weightage has been given to international co-ordination among the standardsand practices prevailing in different countries in addition to relating it to the practices in the field in this country.The performance requirements given in this standard are technically equivalent to those given in ISO 3873.

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, shall be rounded off in accordance withIS 2 : 1960 ‘Rules for rounding off numerical values (revised)’. This number of significant places retained in therounded off value should be the same as that of the specified value in this standard.

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goodsand attending to connected matters in the country.

Copyright

BIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Review of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of‘BIS Catalogue’ and ‘Standards : Monthly Additions’.

This Indian Standard has been developed from Doc No.: BDC 22.

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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