BS6387-2013

BSIStandardsPublicationBS6387:2013TestmethodforresistancetofireofcablesrequiredtomaintaincircuitintegrityunderfireconditionsPublishingandcopyrightinformationTheBSIcopyrightnoticedisplayedinthisdocumentindicateswhenthedocumentwaslastissued.©TheBritishStandardsInstitution2013PublishedbyBSIStandardsLimited2013ISBN9780580810466ICS13.220.99;29.060.20ThefollowingBSIreferencesrelatetotheworkonthisstandard:CommitteereferenceGEL/20/18Draftforcomment13/30273419DCPublicationhistoryFirstpublishedSeptember1983SecondeditionJanuary1994Third(present)editionDecember2013AmendmentsissuedsincepublicationDateTextaffectedBS6387:2013BRITISHSTANDARDContentsForewordii1Scope12Normativereferences13Termsanddefinitions14Categorizationofcables15Testchamber26ProtocolCforresistancetofirealone27ProtocolWforresistancetofirewithwater58ProtocolZforresistancetofirewithmechanicalshock10Bibliography15ListoffiguresFigure1–Cablesupportingarrangementfortestforfireresistancealone3Figure2–Circuitdiagram4Figure3–Methodofsupportingcablefortestofresistancetofirewithwater5Figure4–Exampleofsupportingframefortestforresistancetofirewithwater6Figure5–Endelevationofsupportingframefortestforresistancetofirewithwater7Figure6–Burnerfacefortest8Figure7–Exampleofsprinklerheadfortestforresistancetofirewithwater9Figure8–Rigfortestforresistancetofirewithmechanicalshock11Figure9–Typicalrubberbushforfasteningboardfortestforresistancetofirewithmechanicalshock12Figure10–Cablemountingfortestforresistancetofirewithmechanicalshock13SummaryofpagesThisdocumentcomprisesafrontcover,aninsidefrontcover,pagesitoiv,pages1to16,aninsidebackcoverandabackcover.BRITISHSTANDARDBS6387:2013©TheBritishStandardsInstitution2013•iForewordPublishinginformationThisBritishStandardispublishedbyBSIStandardsLimited,underlicencefromTheBritishStandardsInstitution,andcameintoeffecton31December2013.ItwaspreparedbySubcommitteeGEL/20/18,Firetesting,undertheauthorityofTechnicalCommitteeGEL/20,Electriccables.Alistoforganizationsrepresentedonthesecommitteescanbeobtainedonrequesttotheirsecretary.SupersessionThisBritishStandardsupersedesBS6387:1994,whichiswithdrawn.InformationaboutthisdocumentThisisafullrevisionofthestandard,whichnowgivesonlyatestmethodforfireresistancecharacteristicsofcables.Physicalandelectricaltestsandtheirrelevantrequirementsarenowgivenintheappropriateproductstandards.OthertestmethodsforthefireresistanceofcableshavebeendevelopedsincethepreviousrevisionofBS6387.TheseincludeBS8434andBS8491,cateringforspecificapplications,installationsandend-usermarkets.ThetestmethodgiveninthisBritishStandardconsistsofthreecomponentprotocols,designatedC,WandZ.Thesearetechnicallyunchangedfromthepreviousedition.PreviouseditionsofBS6387haveincludedcategoriesbasedonotherprotocols(A,B,S,XandY).Thesearenowregardedasobsolete.Whenseparatetestpiecesfromthesamesampleofcablearetestedtoeachofthesethreeprotocols,thesetogethercomprisethefulltest.Whentherequirementsofeachoneoftheprotocolsaremet,thecablemaybedesignatedas“categoryCWZ”.Indetail:a)ProtocolCsubjectsthecableundertesttoaflameviadirectimpingementcorrespondingtoatemperatureattackof950°C±40°C.b)ProtocolWsubjectsthecableundertesttoaflameviadirectimpingementcorrespondingtoatemperatureattackof650°C±40°Cwithdirectapplicationofwatersimulatingasprinklersystem.c)ProtocolZsubjectsthecableundertesttoaflameviadirectimpingementcorrespondingtoatemperatureattackof950°C±40°Cwithindirectapplicationofmechanicalshock.ProductstandardsmightrefertoonlyoneoftheprotocolsCorWorZin,respectively,Clauses6,7or8but,insuchcases,maynotusethedesignation“CategoryCWZ”.Itisemphasizedthatfiretestsdonotassessafirehazard,norcantheresultsoffiretestsaloneguaranteesafety.Theyonlyprovideinformationtoassistintheassessmentofthesuitabilityofacableforagivenapplication.HazardwarningsWARNING.ThisBritishStandardcallsfortheuseofsubstancesand/orproceduresthatcanbeinjurioustohealthifadequateprecautionsarenottaken.Itrefersonlytotechnicalsuitabilityanddoesnotabsolvetheuserfromlegalobligationsrelatingtohealthandsafetyatanystage.ThetestmethodsgiveninthisBritishStandardmightinvolvetheuseofdangerousvoltagesandtemperatures.Suitableprecautionsshouldbetakenagainsttherisksofshock,burning,fireandexplosionthatmightbeinvolved,andagainstanynoxiousfumesthatmightbeproduced.BRITISHSTANDARDBS6387:2013ii•©TheBritishStandardsInstitution2013UseofthisdocumentIthasbeenassumedinthepreparationofthisBritishStandardthattheexecutionofitsprovisionswillbeentrustedtoappropriatelyqualifiedandexperiencedpeople,forwhoseuseithasbeenproduced.PresentationalconventionsTheprovisionsofthisstandardarepresentedinroman(i.e.upright)type.Itsmethodsareexpressedasasetofinstructions,adescription,orinsentencesinwhichtheprincipalauxiliaryverbis“shall”.Commentary,explanationandgeneralinformativematerialispresentedinsmalleritalictype,anddoesnotconstituteanormativeelement.ContractualandlegalconsiderationsThispublicationdoesnotpurporttoincludeallthenecessaryprovisionsofacontract.Usersareresponsibleforitscorrectapplication.CompliancewithaBritishStandardcannotconferimmuni