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1、IS940:2003=mw–fi~l~IndianStandardPORTABLEFIREEXTINGUISHER,WATERTYPE(GASCARTRIDGE)-SPECIFICATION(FourhRevision)ICS33.220.100BIS2003BUREAUOFINDIANSTANDARDSMANAKBHAVAN,9BAHADURSHAHZAFARMARGNEWDELHI110002May2003PriceGroup4FireFightingSectionalCommittee,CED22FOREWORDTh
2、isIndianStandard(FourthRevision)wasadoptedbytheBureauofIndianStandards,afterthedraftfinalizedbytheFireFightingSectionalCommitteehadbeenapprovedbytheCivilEngineeringDivisionCouncil.Portablefireextinguisher,watertype(gascartridge)isoneofthetypesofthetireextinguisher
3、susedasfirst-aidfirefightingappliance.ThistypeofextinguisherissuitableforfightingfiresinClassAfires,thatis,inwood,textiles,paper,etc.ThedetailsinregardtomaintenanceofthisapplianceinefticientconditionaregiveninIS2190‘Codeofpracticeforselection,installationandmainte
4、nanceofportablefirst-aidfireextinguishers(thirdrevision)’.Thisstandardwasfirstpublishedin1961andsubsequentlyrevisedin1972,1976and1989.Inthisrevision,theprincipalmodificationsmadeareinrespectofprovidingcaphavingsqueezegriptypeCOZgascartridgepuncturemechanismandalso
5、on-offcontroldischarge.Squeezegriptypecaphasfollowingadvantagesovertheconventionalcap:a)Itissafeinoperationastheoperationneednothittheknobwithforcebyhand.b)Thedischargecanbehaltedandrestartedatthewilloftheoperator.c)Ithasbuiltinoperationleverandcarryinghandle.Othe
6、rmodificationsmadeareasfollows:a)Stainlesssteelbodyisincludedtoprovideresistancefromcorrosionandgoodaestheticappearance.b)Internalplasticliningoftheextinguishertoavoidcorrosioninusage.c)Typetestforleadedtinalloycoatingandstainlesssteelbodieshavebeenincorporated.d)
7、Epoxypowde-coatingforexternalsurfaceisincludedtoimprovethescratchhardness,lifeandaesthetics.e)Provisionofthicknessofbodyinaccordancewithburstingformulae.Inadditiontoabovevariousprovisionshavebeenupdatedwhicharebasedonexperiencegainedintheuseofthisapplianceinthepas
8、t.AschemeforIabellingenvironmentfriendlyproductsknownasECO-MarkhasbeenintroducedattheinstanceoftheMinistryofEnvironmentandForests(MEF),GovernmentofIndia
