BSEN1346332005Nonelectricalequipmentforpotentially

BRITISHSTANDARDBSEN13463-3:2005Non-electricalequipmentforuseinpotentiallyexplosivePart3:Protectionbyflameproofenclosure‘d’TheEuropeanStandardEN13463-3:2005hasthestatusofaBritishStandardICS13.230  atmospheres—LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:15:44GMT+00:002007,UncontrolledCopy,(c)BSIBSEN13463-3:2005ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon18November2005©BSI18November2005ISBN0580467457NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN13463-3:2005.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeFSH/23,Fireprecautionsinindustrialandchemicalplant,whichhastheresponsibilityto:—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeepUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.AdditionalinformationThisstandardwaspreparedbyCEN/TC305/WG2,Equipmentforuseinpotentiallyexplosiveatmospheres,and,inaccordancewiththeirgeneralpolicy,itiswrittentobeapplicabletoallpotentiallyexplosiveatmosphereswhetherarisingfromgas,vapourordust.Flameproofenclosuresfornon-electricalequipmentaremostlikelytobeuseful,however,inapplicationswheretheequipmentmaybeexposedtoexplosivegasatmospheres,includingapplicationswheretheexposureistobothgasanddustatmospheresandwheretheuserwantsequipmentsuitableforeithertypeofservice.Inapplicationswheretheequipmentmaybeexposedtoexplosivedustatmospheresonly,other,simpler,enclosures,whichprovideasuitableingressprotection,arelikelytobemoreeffective.SeeBSEN13463-5:2003Non-electricalequipmentforpotentiallyexplosiveatmospheres.Protectionbyconstructionalsafety‘c’.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to18,aninsidebackcoverandabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:15:44GMT+00:002007,UncontrolledCopy,(c)BSIEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN13463-3April2005ICS13.230EnglishversionNon-electricalequipmentforuseinpotentiallyexplosiveatmospheres-Part3:Protectionbyflameproofenclosure'd'Appareilsnonélectriquesdestinésàêtreutilisésenatmosphèresexplosibles-Partie3:protectionparenveloppeantidéflagrante'd'Nicht-elektrischeGerätefürdenEinsatzinexplosionsgefährdetenBereichen-Teil3:SchutzdurchdruckfesteKapselung'd'ThisEuropeanStandardwasapprovedbyCENon15March2005.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EUROPEANCOMMITTEEFORSTANDARDIZATIONCOMITÉEUROPÉENDENORMALISATIONEUROPÄISCHESKOMITEEFÜRNORMUNGManagementCentre:ruedeStassart,36B-1050Brussels©2005CENAllrightsofexploitationinanyformandbyanymeansreservedworldwideforCENnationalMembers.Ref.No.EN13463-3:2005:ELicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:15:44GMT+00:002007,UncontrolledCopy,(c)BSIEN13463-3:2005(E)2ContentsPageForeword......................................................................................................................................................................3Introduction.................................................................................................................................................................41Scope..............................................................................................................................................................52Normativereferences..............