BSEN1346362005Nonelectricalequipmentforpotentially

BRITISHSTANDARDBSEN13463-6:2005Non-electricalequipmentforuseinpotentiallyexplosiveatmospheres—Part6:Protectionbycontrolofignitionsource‘b’TheEuropeanStandardEN13463-6:2005hasthestatusofaBritishStandardICS13.230  LicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:15:31GMT+00:002007,UncontrolledCopy,(c)BSIBSEN13463-6:2005ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon28July2005©BSI28July2005ISBN0580464504NationalforewordThisBritishStandardistheofficialEnglishlanguageversionofEN13463-6:2005.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteeFSH/23,Fireprecautionsinindustrialandchemicalplant,whichhastheresponsibilityto:Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitssecretary.AdditionalinformationThecontentsofinformativeAnnexCwerethesubjectofconsiderabledebateduringthedevelopmentofthisEuropeanStandard.Thosewhoarefamiliarwithprogrammableelectronicsystemsandtheirpotentiallycomplexfailuremodesseetheneedformuchmoredetailedadviceondesigningequipmentwhichhasreliableprotectivesystems.AspointedoutinAnnexC,EN954-1:1996doesnoteffectivelycoveralloftheprinciplesdescribedinthisEuropeanStandardforthepurposesofassessingignitioncontroldevices.Thosefromamechanicalbackgroundrecognizedthatverysimpledevicescansometimesbeusedassafetysystems.IfdesignersweretoconsideralltheissuescoveredinEN61508thenthiswouldbeabarriertothesuccessfulapplicationoftheprinciplesfoundinthisEuropeanStandard.ThisEuropeanStandardwillneedreviewandmaybesubjecttoamendmentatalaterdateinthelightofthefullvarietyofnewproductsthatwillbedevelopedusingitsprinciplesandtheeventualpublicationEN62061.Cross-referencesTheBritishStandardswhichimplementinternationalorEuropeanpublicationsreferredtointhisdocumentmaybefoundintheBSICatalogueunderthesectionentitled“InternationalStandardsCorrespondenceIndex”,orbyusingthe“Search”facilityoftheBSIElectronicCatalogueorofBritishStandardsOnline.Thispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandarddoesnotofitselfconferimmunityfromlegalobligations.—aidenquirerstounderstandthetext;—presenttotheresponsibleinternational/Europeancommitteeanyenquiriesontheinterpretation,orproposalsforchange,andkeeptheUKinterestsinformed;—monitorrelatedinternationalandEuropeandevelopmentsandpromulgatethemintheUK.SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,theENtitlepage,pages2to21andabackcover.TheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.AmendmentsissuedsincepublicationAmd.No.DateCommentsLicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:15:31GMT+00:002007,UncontrolledCopy,(c)BSIEUROPEANSTANDARDNORMEEUROPÉENNEEUROPÄISCHENORMEN13463-6April2005ICS13.230EnglishversionNon-electricalequipmentforuseinpotentiallyexplosiveatmospheres-Part6:Protectionbycontrolofignitionsource'b'Appareilsnonélectriquesdestinésàêtreutilisésenatmosphèresexplosibles-Partie6:Protectionparcontrôledelasourced'inflammation'b'Nicht-elektrischeGerätefürdenEinsatzinexplosionsgefährdetenBereichen-Teil6:SchutzdurchZündquellenüberwachung'b'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.EN13463-6:2005:ELicensedCopy:InstituteOfTechnologyTallaght,InstituteofTechnology,MonJul2310:15:31GMT+00:002007,UncontrolledCopy,(c)BSIEN13463-6:2005(E)2ContentsPageForeword......................................................................................................................................................................3Introduction.................................................................................................................................................................41Scope...............................................................................................................