oftheNuclearSafetyStandardsCommission(KTA)KTA3407(06/91)PipepenetrationsthroughtheReactorContainmentVesselRohrdurchführungendurchdenReaktorsicherheitsbehälterIfthereisanydoubtregardingtheinformationcontainedinthistranslation,theGermanwordingshallapply.Editor:KTA-Geschaeftsstellec/oBundesamtfuerStrahlenschutz(BfS)Willy-Brandt-Strasse5•D-38226Salzgitter•GermanyTelephone+49-5341/885-(0)901•Telefax+49-5341/885-905Reaffirmed:6/96,6/01,11/06KTASAFETYSTANDARDJune1991PipepenetrationsthroughtheReactorContainmentVesselKTA3407ThisKTAsafetystandardwaspreparedonbehalfofKerntechnischerAusschuss(KTA)bytheNuclearStandardsCommittee,NKe.TheNKeintendstopublishaliteralversionofthe(German)safetystandardasDIN25432.CONTENTSFundamentals....................................................................51Scope.........................................................................52Definitions...............................................................53Materials...................................................................84Conceptualdesign..................................................84.1Safetyrequirements.................................................84.2Postulatedrupture...................................................94.3Classificationofpipepenetrations........................94.4Bellowsexpansionjoints.........................................95Designandconstruction......................................105.1General....................................................................105.2Arrangement..........................................................105.3Determinationofpipepenetrationdesigntypes.........................................................................115.4Designmeetingtestingandinspectionrequirements...........................................................115.5Possibilityofdecontamination.............................115.6Non-integralsupportstructures..........................115.7Bellowsexpansionjoints.......................................116Calculation.............................................................116.1General....................................................................116.2Containedfluidloadcase.....................................126.3Calculationofnon-integralsupportstructures.................................................................127Designapprovalandmanufacture....................218Transportationandstorage.................................218.1Transportation........................................................218.2Storage.....................................................................219Installation..............................................................219.1General.....................................................................219.2Inspectionsuponinstallation................................2110Documentation.......................................................2111In-serviceinspections...........................................21AnnexesABellowsexpansionjoints.....................................22A1Application..............................................................23A2Materials..................................................................23A3Conceptualdesign..................................................23A4Construction............................................................23A5Calculation...............................................................25A6Designapproval......................................................26A7Manufacture............................................................26A8Inspectionandtesting............................................28BRequirementsforcomponentsofindivi-dualpartgroupEG2andforcomponentsofdesignloadinglevelR3...................................29B1Application..............................................................30B2Materialsandtypesofproducts...........................30B3Documents,documentation..................................31B4Manufacture............................................................31CRegulationsreferredtointhisSafetyStandard..................................................................37PLEASENOTE:OnlytheoriginalGermanversionofthissafetystandardrepresentsthejointresolutionofthe50-memberNuclearSafetyStandardsCommission(KerntechnischerAusschuss,KTA).TheGermanversionwasmadepublicinBundesanzeigerNo.113aonJune23,1992.CopiesmaybeorderedthroughtheCarlHeymannsVer-lagKG,LuxemburgerStr.449,D-50939Koeln(Telefax+49-221-94373-603).AllquestionsregardingthisEnglishtranslationshouldpleasebedirectedto:KTA-Geschaeftsstellec/oBfS,Willy-Brandt-Strasse5,D-38226Salzgitter,GermanyPage4Commentsbytheeditor:TakingintoaccountthemeaningandusageofauxiliaryverbsintheGermanlanguage,inthistranslationthefollowingagreementsareeffective:shallindicatesamandatoryrequirement,shallbasicallyisusedinthecaseofmandatoryrequirementstowhichspecificexceptions(andonlythose!)arepermitted.ItisarequirementoftheKTAthattheseexceptions-otherthanthoseinthecaseofshallnormally-arespecifiedinthetexto