Division 3
Containment Systems for Transportation
and Storage of Spent Nuclear Fuel and High-Level Radioactive Material S E C T I O N I I I Rules for Construction of Nuclear Facility Components 2 0 1 7 A S M E B o i l e r a n d P r e s s u r e V e s s e l C o d e An I nt er na t i onal Code
logos, or the Certification Mark shall not be used on any item that is not constructed in
accordance with all of the applicable requirements of the Code or Standard. Use of ASME’s name,
logos, or Certification Mark requires formal ASME certification; if no certification program is
available, such ASME markings may not be used. (For Certification and Accreditation Programs,
see https:/ / www.asme.org/ shop/ certification‐accreditation.)
Items produced by parties not formally certified by ASME may not be described, either explicitly
I I I
R ULES FOR CONST R UCT ION
OF NUCLEA R FA CILIT Y
COMPONENT S
Div ision 3
Conta inment Sy stems for
T r a nspor ta tion a nd Stor a ge of
Spent Nuc l ea r Fuel a nd
High-Lev el R a dioa c tiv e
Ma ter ia l
A SME Boil era nd Pr essure V esselCommittee
on Constr uction ofNucl ea rFacil ity Components
201 7 A SME Boil er &
Pr essur e V essel Code
201 7 Edition Jul y 1, 201 7
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A mericanNationalStandardsanditisanA mericanNational Standard. TheStandardsCommitteethatapproved
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com-mentthatprovidesanopportunityforadditional publicinputfromindustry,academia, reg ulatoryag encies, and
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expresslyadvisedthatdeterminationofthevalidityofanysuchpatentrig hts,andtheriskofinfring ementofsuch
rig hts, isentirelytheirow n responsibility.
Participationbyfederalag encyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedas
g overnmentorindustryendorsementofthiscodeorstandard.
A SMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancew iththe
es-tablishedA SMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividuals.
Theendnotesandpreambleinthisdocument(ifany) arepartofthisA mericanNationalStandard.
A SMEcollectiv emembershipmark
Cer tificationMark
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Nopartofthisdocumentmayber eproducedinanyform,inanelectronic
retrievalsy stemorotherwise,withoutthepriorw rittenper missionofthe
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LibraryofCongr essCatalogCardNumber:56-3934
PrintedintheUnitedStatesofA mer ica
AdoptedbytheCouncilofTheAmericanSocietyofMechanicalEngineers,1914;latestedition2017.
TheA mericanSocietyofMechanicalEng ineers
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THEA MERICA NSOCIETYOFMECHA NICA LENGINEERS
ListofSections ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .... x v
Forew ord .... .... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .... x v ii
StatementofPolicyon the UseoftheCertificationMarkandCodeA uthorization inA dv ertising . ... .... x ix
StatementofPolicyon the UseofA SMEMarkingtoIdentifyManufacturedItems ... ... ... ... .... x ix
SubmittalofTechnicalInquiries totheBoilerandPressure V essel StandardsCommittees . ... ... .... x x
Personnel .... .... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .... x x iii
Org anizationofSectionIII ... ... ... ... ... ... ... ... ... ... ... ... ... .... x lii
SummaryofChang es ... ... ... ... ... ... ... ... ... ... ... ... ... ... .... x lv
ListofChang esinRecordOrderNumber .. ... ... ... ... ... ... ... ... ... ... .... l
Cross-ReferencingandSty listicChang esin the BoilerandPressureV esselCode .... ... ... ... .... li
SubsectionWA GeneralRequirements ... ... ... .... ... ... ... ... .... ... 1
A rticleWA -1000 ScopeofDivision3 ... ... ... ... .... ... ... ... ... .... ... 1
WA -1100 Scope . ... ... ... ... ... ... .... ... ... ... ... .... ... 1
WA -1110 Nature ofTheseRulesand ContainmentSystemstoWhichTheyAre A pplicable ... 1
WA -1120 Definitions . ... ... ... ... ... .... ... ... ... ... .... ... 1
WA -1130 LimitsofThese Rules .. ... ... ... .... ... ... ... ... .... ... 1
WA -1140 UseofCode Editionsand Cases .... ... .... ... ... ... ... .... ... 1
WA -1150 Units ofMeasure . ... ... ... ... .... ... ... ... ... .... ... 2
WA -1200 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 2
WA -1210 V alv es ... ... ... ... ... ... .... ... ... ... ... .... ... 2
WA -1220 Materials ... ... ... ... ... ... .... ... ... ... ... .... ... 2
WA -1230 Parts . ... ... ... ... ... ... .... ... ... ... ... .... ... 2
A rticleWA -2000 Desig nBasis .... ... ... ... ... .... ... ... ... ... ... ... 3
WA -2100 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 3
WA -2110 Scope . ... ... ... ... ... ... .... ... ... ... ... .... ... 3
WA -2120 Desig nBasis ... ... ... ... ... .... ... ... ... ... .... ... 3
WA -2130 Special Requirements .. ... ... ... .... ... ... ... ... .... ... 4
A rticleWA -3000 ResponsibilitiesandDuties ... ... .... ... ... ... ... .... ... 5
WA -3100 General .... ... ... ... ... ... .... ... ... ... ... .... ... 5
WA -3110 ResponsibilitiesV s.Leg alLiabilities ... .... ... ... ... ... .... ... 5
WA -3120 A uthorization .... ... ... ... ... .... ... ... ... ... .... ... 5
WA -3130 WeldingandSubcontractingofWelding .. .... ... ... ... ... .... ... 6
WA -3300 ResponsibilitiesofanN3 CertificateHolder ... ... ... ... ... .... ... 7
WA -3320 Categ ories oftheN3CertificateHolder’sResponsibilities .. ... ... .... ... 7
WA -3330 ObtainingaCertificate . ... ... ... .... ... ... ... ... .... ... 7
WA -3340 ComplianceWithThis Div ision .... ... .... ... ... ... ... .... ... 7
WA -3350 Desig nDocuments ... ... ... ... .... ... ... ... ... .... ... 7
WA -3360 FabricationSpecification .... ... ... .... ... ... ... ... .... ... 9
WA -3370 ResponsibilityforQualityA ssurance ... .... ... ... ... ... .... ... 9
WA -3380 DataReports .... ... ... ... ... .... ... ... ... ... .... ... 9
WA -3390 N3CertificateHolder’s ResponsibilityforRecords ... ... ... ... .... ... 10
WA -3400 ResponsibilitiesofanNPTCertificateHolder .. ... ... ... ... .... ... 10
WA -3420 Categ ories ofanNPTCertificateHolder’sResponsibilities . ... ... .... ... 10
WA -3430 ObtainingaCertificate . ... ... ... .... ... ... ... ... .... ... 10
WA -3440 ComplianceWithThis Div ision .... ... .... ... ... ... ... .... ... 10
WA -3450 ResponsibilityforQualityA ssurance ... .... ... ... ... ... .... ... 10
WA -3800 MetallicMaterial . ... ... ... ... ... ... ... ... .... ... ... 10
WA -3810 ScopeandA pplicability ... ... ... ... ... ... ... .... ... ... 10
WA -3820 Material Org anizations . ... ... ... ... ... ... ... .... ... ... 11
Ar ticleWA -4000 QualityA ssurance .... ... ... ... ... ... ... ... .... ... ... 12
WA -4100 Requirements .... ... ... ... ... ... ... ... ... .... ... ... 12
WA -4110 ScopeandA pplicability ... ... ... ... ... ... ... .... ... ... 12
WA -4120 Definitions . ... ... ... ... ... ... ... ... ... .... ... ... 12
WA -4130 EstablishmentandImplementation ... ... ... ... ... .... ... ... 12
Ar ticleWA -5000 Author izedInspection ... ... ... ... ... ... ... .... ... ... 14
WA -5100 Introduction ... ... ... ... ... ... ... ... ... .... ... ... 14
WA -5110 Applicability ... ... ... ... ... ... ... ... ... .... ... ... 14
WA -5120 PerformanceofInspection ... ... ... ... ... ... ... .... ... ... 14
WA -5130 AccessforInspection A g encyPersonnel . ... ... ... ... .... ... ... 14
WA -5200 Duties ofInspector .... ... ... ... ... ... ... ... .... ... ... 14
WA -5210 GeneralInspectionDuties ... ... ... ... ... ... ... .... ... ... 14
WA -5220 Categ ories ofInspector’s Duties ... ... ... ... ... ... .... ... ... 15
WA -5230 ScopeofWork,Desig nSpecifications,Desig nReports,andFabricationSpecifications 15 WA -5240 Q ualityA ssurance Prog rams . ... ... ... ... ... ... .... ... ... 15
WA -5250 Q ualificationRecords .. ... ... ... ... ... ... ... .... ... ... 15
WA -5260 Materials, Parts, andHeatTreatment .... ... ... ... ... .... ... ... 16
WA -5270 Ex aminations andTests ... ... ... ... ... ... ... .... ... ... 16
WA -5280 FinalTests . ... ... ... ... ... ... ... ... ... .... ... ... 16
WA -5290 DataReports .... ... ... ... ... ... ... ... ... .... ... ... 16
WA -5300 ResponsibilitiesoftheA uthorizedInspectionA g ency ... ... .... ... ... 16
Ar ticleWA -7000 ReferenceStandards . ... ... ... ... ... ... ... .... ... ... 17
WA -7100 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 17
Ar ticleWA -8000 CertificatesofAuthor ization,Nameplates,CertificationMark,andDataReports 19 WA -8100 AuthorizationtoPerform CodeA ctivities ... ... ... ... .... ... ... 19
WA -8110 General .... ... ... ... ... ... ... ... ... ... .... ... ... 19
WA -8120 ScopeofA uthorization . ... ... ... ... ... ... ... .... ... ... 19
WA -8130 Inspection A g reementRequired ... ... ... ... ... ... .... ... ... 19
WA -8140 Q ualityA ssurance Prog ramRequirements ... ... ... ... .... ... ... 20
WA -8150 Application forA uthorization ... ... ... ... ... ... .... ... ... 20
WA -8160 Ev aluation forAuthorization . ... ... ... ... ... ... .... ... ... 20
WA -8170 IssuanceofA uthorization .... ... ... ... ... ... ... .... ... ... 20
WA -8180 RenewalofA uthorization .... ... ... ... ... ... ... .... ... ... 20
WA -8200 Nameplates andStampingWithCertificationMark .. ... ... .... ... ... 20
WA -8210 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 20
WA -8220 Nameplates ... ... ... ... ... ... ... ... ... .... ... ... 21
WA -8230 Nameplates forCertificationMarkWithNPTDesig natorItems ... .... ... ... 21
WA -8300 CertificationMark ... ... ... ... ... ... ... .... ... ... ... 21
WA -8310 GeneralRequirements . ... ... ... ... ... ... .... ... ... ... 21
WA -8330 Remov able Items . ... ... ... ... ... ... ... .... ... ... ... 22
WA -8400 DataReports .... ... ... ... ... ... ... ... .... ... ... ... 22
WA -8410 GeneralRequirements . ... ... ... ... ... ... .... ... ... ... 22
Ar ticleWA -9000 Glossary ... ... ... ... ... ... ... ... ... .... ... ... ... 29
WA -9100 Introduction ... ... ... ... ... ... ... ... .... ... ... ... 29
A rticleWB-1000 Introduction .... ... ... ... ... .... ... ... ... ... ... ... 31
WB-1100 Scope . ... ... ... ... ... ... .... ... ... ... ... .... ... 31
WB-1120 LimitsofRulesforClassTCTransportationContainments . ... ... .... ... 31
WB-1130 BoundariesofJurisdiction ... ... ... .... ... ... ... ... .... ... 31
A rticleWB-2000 Material ... ... ... ... ... ... .... ... ... ... ... ... ... 33
WB-2100 GeneralRequirementsforMaterial . ... .... ... ... ... ... .... ... 33
WB-2110 ScopeofPrincipal TermsEmploy ed ... .... ... ... ... ... .... ... 33
WB-2120 ContainmentMaterial .. ... ... ... .... ... ... ... ... .... ... 33
WB-2130 CertificationofMaterial ... ... ... .... ... ... ... ... .... ... 34
WB-2140 WeldingMaterial . ... ... ... ... .... ... ... ... ... .... ... 34
WB-2150 Material Identification . ... ... ... .... ... ... ... ... .... ... 34
WB-2160 DeteriorationofMaterial inService ... .... ... ... ... ... .... ... 35
WB-2170 HeatTreatmenttoEnhanceImpactProperties . ... ... ... ... .... ... 35
WB-2180 ProceduresforHeatTreatmentofMaterial .... ... ... ... ... .... ... 35
WB-2190 Material NotPerformingaContainmentFunction ... ... ... ... .... ... 35
WB-2200 MaterialTestCouponsandSpecimensforFerriticSteelMaterialandDuctileCastIron 35 WB-2210 HeatTreatmentRequirements .... ... .... ... ... ... ... .... ... 35
WB-2220 ProcedureforObtainingTestCoupons andSpecimensforQ uenched andTempered MaterialandforDuctileCastIron ... .... ... ... ... ... .... ... 36
WB-2300 FractureToug hnessRequirementsforMaterial ... ... ... ... .... ... 37
WB-2310 Material toBeToug hnessTested .. ... .... ... ... ... ... .... ... 37
WB-2320 ImpactTestProcedures ... ... ... .... ... ... ... ... .... ... 37
WB-2330 TestRequirementsandA cceptance Standards . ... ... ... ... .... ... 38
WB-2340 NumberofToug hness Tests Required .... .... ... ... ... ... .... ... 40
WB-2350 Retests .... ... ... ... ... ... .... ... ... ... ... .... ... 41
WB-2360 CalibrationofInstruments andEquipment .... ... ... ... ... .... ... 41
WB-2400 WeldingMaterial . ... ... ... ... .... ... ... ... ... .... ... 41
WB-2410 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 41
WB-2420 Required Tests ... ... ... ... ... .... ... ... ... ... .... ... 41
WB-2430 WeldMetalTests . ... ... ... ... .... ... ... ... ... .... ... 42
WB-2440 Storag eandHandlingofWeldingMaterial .... ... ... ... ... .... ... 45
WB-2500 Ex amination and RepairofContainmentMaterial ... ... ... ... .... ... 45
WB-2510 Ex amination ofContainmentMaterial .... .... ... ... ... ... .... ... 45
WB-2520 Ex amination A fterQuenchingandTempering .. ... ... ... ... .... ... 46
WB-2530 Ex amination and RepairofPlate ... ... .... ... ... ... ... .... ... 46
WB-2540 Ex amination and RepairofForg ing sandBars . ... ... ... ... .... ... 47
WB-2550 Ex amination and RepairofSeamless andWeldedTubularProducts andFitting s ... 49
WB-2570 Ex amination and RepairofCastProducts . .... ... ... ... ... .... ... 52
WB-2580 Ex amination ofBolts,Studs,andNuts .... .... ... ... ... ... .... ... 53
WB-2600 Material Org anization’sQualitySy stemProg rams ... ... ... ... .... ... 55
WB-2610 Documentationand MaintenanceofQualitySystemProg rams .... ... .... ... 55
WB-2700 DimensionalStandards . ... ... ... .... ... ... ... ... .... ... 55
A rticleWB-3000 Desig n .... ... ... ... ... ... .... ... ... ... ... ... ... 56
WB-3100 GeneralDesig n ... ... ... ... ... .... ... ... ... ... .... ... 56
WB-3110 LoadingCriteria .. ... ... ... ... .... ... ... ... ... .... ... 56
WB-3120 Special Considerations . ... ... ... .... ... ... ... ... .... ... 57
WB-3130 GeneralDesig n Rules .. ... ... ... .... ... ... ... ... .... ... 57
WB-3200 Desig nofContainments ... ... ... .... ... ... ... ... .... ... 61
WB-3210 Desig nCriteria ... ... ... ... ... .... ... ... ... ... .... ... 61
WB-3220 StressLimitsforOtherThanBolts . ... .... ... ... ... ... .... ... 64
WB-3230 StressLimitsforBolts . ... ... ... .... ... ... ... ... .... ... 74
WB-3240 Nozzles orOpening s ... ... ... ... .... ... ... ... ... .... ... 75
WB-3700 Strain-Based A cceptanceCriteria .. ... ... ... ... ... .... ... ... 79
Ar ticleWB-4000 Fabrication ... ... ... ... ... ... ... ... ... .... ... ... 81
WB-4100 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 81
WB-4110 Introduction ... ... ... ... ... ... ... ... ... .... ... ... 81
WB-4120 CertificationofMaterials and Fabrication byCertificateHolder ... .... ... ... 81
WB-4130 RepairofMaterial ... ... ... ... ... ... ... ... .... ... ... 82
WB-4200 Forming ,Fitting , andA lig ning ... ... ... ... ... ... .... ... ... 82
WB-4210 Cutting ,Forming ,andBending .... ... ... ... ... ... .... ... ... 82
WB-4220 FormingTolerances ... ... ... ... ... ... ... ... .... ... ... 83
WB-4230 FittingandA lig ning .... ... ... ... ... ... ... ... .... ... ... 85
WB-4240 Requirements forWeld JointsinContainments ... ... ... .... ... ... 87
WB-4300 WeldingQualifications . ... ... ... ... ... ... ... .... ... ... 92
WB-4310 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 92
WB-4320 WeldingQualifications,Records,andIdentify ingStamps ... ... .... ... ... 92
WB-4330 GeneralRequirementsforWeldingProcedureQualificationTests . .... ... ... 94
WB-4400 RulesGoverningMaking ,Ex amining ,andRepairingWelds .. ... .... ... ... 97
WB-4410 Precautions toBe Taken BeforeWelding . ... ... ... ... .... ... ... 97
WB-4420 RulesforMakingWeldedJoints ... ... ... ... ... ... .... ... ... 97
WB-4430 WeldingofA ttachments ... ... ... ... ... ... ... .... ... ... 98
WB-4450 RepairofWeldMetalDefects ... ... ... ... ... ... .... ... ... 99
WB-4600 HeatTreatment .. ... ... ... ... ... ... ... ... .... ... ... 101
WB-4610 WeldingPreheatRequirements .... ... ... ... ... ... .... ... ... 101
WB-4620 PostweldHeatTreatment .... ... ... ... ... ... ... .... ... ... 101
WB-4630 HeatTreatmentofWeldsOtherThantheFinalPostweldHeatTreatment .... ... 111
WB-4700 MechanicalJoints . ... ... ... ... ... ... ... ... .... ... ... 111
WB-4710 Boltingand Threading . ... ... ... ... ... ... ... .... ... ... 111
WB-4720 BoltingFlang edJoints .. ... ... ... ... ... ... ... .... ... ... 111
Ar ticleWB-5000 Ex amination .... ... ... ... ... ... ... ... ... .... ... ... 112
WB-5100 GeneralRequirementsforEx amination .. ... ... ... ... .... ... ... 112
WB-5110 Procedures,Q ualifications,andEv aluation .... ... ... ... .... ... ... 112
WB-5120 Time ofEx aminationofWelds andWeldMetalCladding ... ... .... ... ... 112
WB-5130 Ex amination ofWeldEdg ePreparationSurfaces .... ... ... .... ... ... 114
WB-5140 Ex amination ofA djacentBase Material .. ... ... ... ... .... ... ... 114
WB-5200 Required Ex aminationofWelds ... ... ... ... ... ... .... ... ... 114
WB-5210 Categ oryAWeldedJoints .... ... ... ... ... ... ... .... ... ... 114
WB-5220 Categ oryBWeldedJoints .... ... ... ... ... ... ... .... ... ... 114
WB-5230 Categ oryCWeldedJoints .... ... ... ... ... ... .... ... ... ... 114
WB-5240 Categ oryDWelded Joints .... ... ... ... ... ... .... ... ... ... 114
WB-5260 Fillet, PartialPenetration,Socket,andA ttachmentWeldedJoints ... ... ... 115
WB-5270 Special Welded Joints .. ... ... ... ... ... ... .... ... ... ... 115
WB-5300 Acceptance Standards .. ... ... ... ... ... ... .... ... ... ... 115
WB-5320 Radiog raphicA cceptanceStandards ... ... ... ... .... ... ... ... 115
WB-5330 UltrasonicA cceptanceStandards .. ... ... ... ... .... ... ... ... 116
WB-5340 Mag neticParticleA cceptance Standards . ... ... ... .... ... ... ... 116
WB-5350 Liquid PenetrantA cceptanceStandards .. ... ... ... .... ... ... ... 116
WB-5400 FinalEx aminationofContainments ... ... ... ... .... ... ... ... 116
WB-5410 Ex amination AfterHydrostaticTest ... ... ... ... .... ... ... ... 116
WB-5500 Q ualificationsand CertificationofNondestructiv eEx aminationPersonnel .... ... 117
WB-5510 GeneralRequirements . ... ... ... ... ... ... .... ... ... ... 117
WB-5520 PersonnelQualification,Certification,and Verification ... .... ... ... ... 117
WB-5530 Records .... ... ... ... ... ... ... ... ... .... ... ... ... 118
Ar ticleWB-6000 Testing .... ... ... ... ... ... ... ... ... .... ... ... ... 119
WB-6100 GeneralRequirements . ... ... ... ... ... ... .... ... ... ... 119
WB-6130 PreparationforTesting ... ... ... .... ... ... ... ... .... ... 119
WB-6200 Hy drostaticTests ... ... ... ... .... ... ... ... ... .... ... 120
WB-6210 Hy drostaticTestProcedure .. ... ... .... ... ... ... ... .... ... 120
WB-6220 Hy drostaticTestPressure Requirements .. .... ... ... ... ... .... ... 120
WB-6300 PneumaticTests . ... ... ... ... .... ... ... ... ... .... ... 120
WB-6310 PneumaticTestingProcedures .... ... .... ... ... ... ... .... ... 120
WB-6320 PneumaticTestPressureRequirements ... .... ... ... ... ... .... ... 120
WB-6400 TestGag es . ... ... ... ... ... .... ... ... ... ... .... ... 121
WB-6410 . ... ... ... ... ... ... ... .... ... ... ... ... .... ... 121
WB-6600 Special TestPressureSituations ... ... .... ... ... ... ... .... ... 121
WB-6610 ContainmentsDesig nedforEx ternalPressure . ... ... ... ... .... ... 121
WB-6620 TestingofCombination Units ... ... .... ... ... ... ... .... ... 121
WB-6700 LeakTesting ... ... ... ... ... .... ... ... ... ... .... ... 121
WB-6710 HeliumLeakTesting ... ... ... ... .... ... ... ... ... .... ... 121
A r ticleWB-8000 Nameplates,StampingWithCertificationMark,andReports . ... .... ... 122
WB-8100 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 122
SubsectionWC ClassSCStorag e Containments .. ... .... ... ... ... ... .... ... 123
A r ticleWC-1000 Introduction .... ... ... ... ... .... ... ... ... ... ... ... 123
WC-1100 Scope . ... ... ... ... ... ... .... ... ... ... ... .... ... 123
WC-1120 LimitsofRulesforClassSCStorag eContainments ... ... ... ... .... ... 123
WC-1130 BoundariesofJurisdiction ... ... ... .... ... ... ... ... .... ... 123
A r ticleWC-2000 Material ... ... ... ... ... ... .... ... ... ... ... ... ... 125
WC-2100 GeneralRequirementsforMaterial . ... .... ... ... ... ... .... ... 125
WC-2110 ScopeofPrincipal TermsEmploy ed ... .... ... ... ... ... .... ... 125
WC-2120 ContainmentMaterial .. ... ... ... .... ... ... ... ... .... ... 125
WC-2130 CertificationofMaterial ... ... ... .... ... ... ... ... .... ... 126
WC-2140 WeldingMaterials ... ... ... ... .... ... ... ... ... .... ... 127
WC-2150 Material Identification . ... ... ... .... ... ... ... ... .... ... 127
WC-2160 DeteriorationofMaterial inService ... .... ... ... ... ... .... ... 127
WC-2170 HeatTreatmenttoEnhanceImpactProperties . ... ... ... ... .... ... 127
WC-2180 ProceduresforHeatTreatmentofMaterial .... ... ... ... ... .... ... 127
WC-2190 A ttachmentMaterial ... ... ... ... .... ... ... ... ... .... ... 127
WC-2200 MaterialTestCouponsandSpecimensforFerriticSteelMaterialandDuctileCastIron 127 WC-2210 HeatTreatmentRequirements .... ... .... ... ... ... ... .... ... 127
WC-2220 ProcedureforObtainingTestCoupons andSpecimensforQ uenched andTempered MaterialandforDuctileCastIron ... .... ... ... ... ... .... ... 128
WC-2300 FractureToug hnessRequirementsforMaterial ... ... ... ... .... ... 129
WC-2310 Material toBeImpactTested . ... ... .... ... ... ... ... .... ... 129
WC-2320 ImpactTestProcedures ... ... ... .... ... ... ... ... .... ... 130
WC-2330 TestRequirementsandA cceptance Standards . ... ... ... ... .... ... 131
WC-2340 NumberofImpactTestsRequired . ... .... ... ... ... ... .... ... 132
WC-2350 Retests .... ... ... ... ... ... .... ... ... ... ... .... ... 133
WC-2360 CalibrationofInstruments andEquipment .... ... ... ... ... .... ... 133
WC-2400 WeldingMaterial . ... ... ... ... .... ... ... .... ... .... ... 133
WC-2410 GeneralRequirements . ... ... ... .... ... ... .... ... .... ... 133
WC-2420 Required Tests ... ... ... ... ... .... ... ... .... ... .... ... 134
WC-2430 WeldMetalTests . ... ... ... ... .... ... ... .... ... .... ... 135
WC-2440 Storag eandHandlingofWeldingMaterial .... ... ... .... ... .... ... 137
WC-2500 Ex amination and RepairofContainmentMaterial ... ... .... ... .... ... 137
WC-2510 ContainmentMaterial .. ... ... ... ... ... ... .... ... .... ... 137
WC-2530 Ex amination and RepairofPlate ... ... ... ... ... .... ... .... ... 137
ProductsandFitting s ... ... ... ... ... ... ... .... ... ... 140
WC-2560 Ex amination andRepairofTubularProductsand Fitting sWeldedWithFillerMetal 142 WC-2570 Ex amination andRepairofCastProducts ... ... ... ... .... ... ... 143
WC-2580 Ex amination ofBolts,Studs,andNuts ... ... ... ... ... .... ... ... 144
WC-2600 Material Org anizations’Q ualitySystemProg rams ... ... ... .... ... ... 145
WC-2610 Documentationand MaintenanceofQ ualitySy stemProg rams .... .... ... ... 145
WC-2700 DimensionalStandards . ... ... ... ... ... ... ... .... ... ... 145
Ar ticleWC-3000 Desig n .... ... ... ... ... ... ... ... ... ... .... ... ... 146
WC-3100 GeneralDesig n ... ... ... ... ... ... ... ... ... .... ... ... 146
WC-3110 LoadingCriteria .. ... ... ... ... ... ... ... ... .... ... ... 146
WC-3120 Special Considerations . ... ... ... ... ... ... ... .... ... ... 147
WC-3130 GeneralDesig nRules .. ... ... ... ... ... ... ... .... ... ... 147
WC-3200 Desig nRules forContainments .... ... ... ... ... ... .... ... ... 150
WC-3210 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 150
WC-3220 Desig nConsideration .. ... ... ... ... ... ... ... .... ... ... 153
WC-3230 Opening s andReinforcement . ... ... ... ... ... ... .... ... ... 160
WC-3250 Desig nofWeldedConstruction .... ... ... ... ... ... .... ... ... 161
WC-3260 Special ContainmentRequirements ... ... ... ... ... .... ... ... 164
WC-3700 Strain-Based A cceptanceCriteria .. ... ... ... ... ... .... ... ... 165
Ar ticleWC-4000 Fabrication ... ... ... ... ... ... ... ... ... .... ... ... 166
WC-4100 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 166
WC-4110 Introduction ... ... ... ... ... ... ... ... ... .... ... ... 166
WC-4120 CertificationofMaterials and Fabrication byCertificateHolder ... .... ... ... 166
WC-4130 RepairofMaterial ... ... ... ... ... ... ... ... .... ... ... 167
WC-4200 Forming ,Cutting ,andA lig ning .... ... ... ... ... ... .... ... ... 167
WC-4210 Cutting ,Forming ,andBending .... ... ... ... ... ... .... ... ... 167
WC-4220 FormingTolerances ... ... ... ... ... ... ... ... .... ... ... 168
WC-4230 FittingandA lig ning .... ... ... ... ... ... ... ... .... ... ... 171
WC-4260 Requirements forWeld JointsinContainments ... ... ... .... ... ... 172
WC-4300 WeldingQualifications . ... ... ... ... ... ... ... .... ... ... 175
WC-4310 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 175
WC-4320 WeldingQualifications,Records,andIdentify ingStamps ... ... .... ... ... 180
WC-4330 GeneralRequirementsforWeldingProcedureQualificationTests . .... ... ... 181
WC-4400 RulesGoverningMaking ,Ex amining ,andRepairingWelds .. ... .... ... ... 183
WC-4410 Precautions toBe Taken BeforeWelding . ... ... ... ... .... ... ... 183
WC-4420 RulesforMakingWeldedJoints ... ... ... ... ... ... .... ... ... 183
WC-4430 WeldingofA ttachments ... ... ... ... ... ... ... .... ... ... 184
WC-4450 RepairofWeldMetalDefects ... ... ... ... ... .... ... ... ... 187
WC-4500 Brazing .... ... ... ... ... ... ... ... ... .... ... ... ... 188
WC-4510 RulesforBrazing . ... ... ... ... ... ... ... .... ... ... ... 188
WC-4520 BrazingQ ualification Requirements ... ... ... ... .... ... ... ... 188
WC-4530 FittingandA lig ningofPartstoBe Brazed ... ... ... .... ... ... ... 189
WC-4540 Ex amination ofBrazedJoints . ... ... ... ... ... .... ... ... ... 189
WC-4600 HeatTreatment .. ... ... ... ... ... ... ... .... ... ... ... 189
WC-4610 WeldingPreheatRequirements .... ... ... ... ... .... ... ... ... 189
WC-4620 PostweldHeatTreatment .... ... ... ... ... ... .... ... ... ... 189
WC-4630 HeatTreatmentofWeldsOtherThantheFinalPostweldHeatTreatment .... ... 199
WC-4700 MechanicalJoints . ... ... ... ... ... ... ... .... ... ... ... 199
WC-4710 Boltingand Threading . ... ... ... ... ... ... .... ... ... ... 199
WC-4720 BoltingFlang edJoints .. ... ... ... ... ... ... .... ... ... ... 200
Ar ticleWC-5000 Ex amination .... ... ... ... ... ... ... ... .... ... ... ... 201
WC-5100 GeneralRequirementsforEx amination .. ... ... ... .... ... ... ... 201
WC-5110 Procedures,Q ualifications,andEv aluation .... ... ... .... ... ... ... 201
WC-5140 Ex amination ofA djacentBase Material ... .... ... ... ... ... .... ... 203
WC-5200 Required Ex aminationofWelds ... ... .... ... ... ... ... .... ... 203
WC-5210 Categ oryALong itudinalWeldedJoints ... .... ... ... ... ... .... ... 203
WC-5220 Categ oryBCircumferential Welded Joints . .... ... ... ... ... .... ... 203
WC-5230 Categ oryCWeldedJoints .... ... ... .... ... ... ... ... .... ... 203
WC-5240 Categ oryDWelded Joints .... ... ... .... ... ... ... ... .... ... 203
WC-5250 Ex amination ofContainmentClosureWelds ... ... ... ... ... .... ... 204
WC-5260 Fillet, PartialPenetration, Socket,andAttachmentWeldedJoints . ... .... ... 204
WC-5270 Special Welds andBrazedJoints ... ... .... ... ... ... ... .... ... 204
WC-5300 A cceptanceStandards .. ... ... ... .... ... ... ... ... .... ... 205
WC-5320 Radiog raphicA cceptanceStandards ... .... ... ... ... ... .... ... 205
WC-5330 UltrasonicA cceptance Standards .. ... .... ... ... ... ... .... ... 205
WC-5340 Mag neticParticleA cceptance Standards .. .... ... ... ... ... .... ... 205
WC-5350 Liquid PenetrantA cceptanceStandards ... .... ... ... ... ... .... ... 205
WC-5360 VisualA cceptanceStandardsforBrazedJoints . ... ... ... ... .... ... 206
WC-5400 FinalEx aminationofContainments ... .... ... ... ... ... .... ... 206
WC-5410 Ex amination A fterPressureTest ... ... .... ... ... ... ... .... ... 206
WC-5500 QualificationsandCertificationofNondestructiv eEx aminationPersonnel ... ... 206
WC-5510 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 206
WC-5520 PersonnelQ ualification,Certification,and V erification ... ... ... .... ... 206
WC-5530 Records .... ... ... ... ... ... .... ... ... ... ... .... ... 207
A r ticleWC-6000 Testing .... ... ... ... ... ... .... ... ... ... ... ... ... 208
WC-6100 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 208
WC-6110 Scope . ... ... ... ... ... ... .... ... ... ... ... .... ... 208
WC-6120 TestingofContainments ... ... ... .... ... ... ... ... .... ... 208
WC-6130 PreparationforTesting ... ... ... .... ... ... ... ... .... ... 208
WC-6200 Hy drostaticTests ... ... ... ... .... ... ... ... ... .... ... 209
WC-6210 Hy drostaticTestProcedure .. ... ... .... ... ... ... ... .... ... 209
WC-6220 Hy drostaticTestPressure Requirements .. .... ... ... ... ... .... ... 209
WC-6300 PneumaticTests . ... ... ... ... .... ... ... ... ... .... ... 209
WC-6310 PneumaticTestingProcedures .... ... .... ... ... ... ... .... ... 209
WC-6320 PneumaticTestPressureRequirements ... .... ... ... ... ... .... ... 209
WC-6400 TestGag es . ... ... ... ... ... .... ... ... ... ... .... ... 210
WC-6410 . ... ... ... ... ... ... ... .... ... ... ... ... .... ... 210
WC-6600 Special TestPressureSituations ... ... .... ... ... ... ... .... ... 210
WC-6610 ContainmentsDesig nedforEx ternalPressure . ... ... ... ... .... ... 210
WC-6620 PressureTestingofCombination Units ... .... ... ... ... ... .... ... 210
WC-6700 LeakTesting ... ... ... ... ... .... ... ... ... ... .... ... 210
WC-6710 HeliumLeakTesting ... ... ... ... .... ... ... ... ... .... ... 210
WC-6720 ContainmentClosures .. ... ... ... .... ... ... ... ... .... ... 211
A r ticleWC-8000 Nameplates,StampingWithCertificationMark,andReports . ... .... ... 212
WC-8100 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 212
SubsectionWD ClassISSInternalSupportStructures .. .... ... ... ... ... .... ... 213
A r ticleWD-1000 Introduction .... ... ... ... ... .... ... ... ... ... ... ... 213
WD-1100 ScopeandGeneralRequirements .. ... .... ... ... ... ... .... ... 213
WD-1110 Scope . ... ... ... ... ... ... .... ... ... ... ... .... ... 213
WD-1120 LimitsofRulesforClassISSInternal SupportStructures ... ... ... .... ... 213
WD-1130 BoundariesofJurisdiction ... ... ... .... ... ... ... ... .... ... 213
A r ticleWD-2000 Material ... ... ... ... ... ... .... ... ... ... ... ... ... 215
WD-2100 GeneralRequirementsforMaterial . ... .... ... ... .... ... .... ... 215
WD-2110 ScopeofPrincipal TermsEmploy ed ... .... ... ... .... ... .... ... 215
WD-2120 Material forInternalSupportStructures .. .... ... ... .... ... .... ... 215
WD-2150 Material Identification . ... ... ... ... ... ... ... .... ... ... 216
WD-2160 DeteriorationofMaterial inServ ice ... ... ... ... ... .... ... ... 216
WD-2170 HeatTreatmenttoEnhanceImpactProperties . ... ... ... .... ... ... 216
WD-2180 Procedures forHeatTreatmentofMaterial .... ... ... ... .... ... ... 216
WD-2190 TemporaryA ttachmentMaterial ... ... ... ... ... ... .... ... ... 216
WD-2200 Material TestCouponsand Specimens forFerriticSteel Material . .... ... ... 216
WD-2210 HeatTreatmentRequirements .... ... ... ... ... ... .... ... ... 216
WD-2220 ProcedureforObtainingTestCoupons andSpecimensforQuenched andTempered Material . ... ... ... ... ... ... ... ... ... .... ... ... 217
WD-2300 FractureToug hnessRequirementsforMaterial ... ... ... .... ... ... 218
WD-2310 Material toBeImpactTested . ... ... ... ... ... ... .... ... ... 218
WD-2320 ImpactTestProcedures ... ... ... ... ... ... ... .... ... ... 218
WD-2330 TestRequirementsandA cceptance Standards . ... ... ... .... ... ... 219
WD-2340 NumberofImpactTestsRequired . ... ... ... ... ... .... ... ... 220
WD-2350 Retests .... ... ... ... ... ... ... ... ... ... .... ... ... 221
WD-2360 CalibrationofInstruments andEquipment .... ... ... ... .... ... ... 221
WD-2400 WeldingMaterial . ... ... ... ... ... ... ... ... .... ... ... 221
WD-2410 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 221
WD-2420 Required Tests ... ... ... ... ... ... ... ... ... .... ... ... 221
WD-2430 WeldMetalTests . ... ... ... ... ... ... ... ... .... ... ... 222
WD-2440 Storag e andHandlingofWeldingMaterial .... ... ... ... .... ... ... 225
WD-2500 Ex amination andRepairofInternalSupportStructureMaterial .. .... ... ... 225
WD-2510 Ex amination ofInternalSupportStructureMaterial . ... ... .... ... ... 225
WD-2520 Ex amination AfterQ uenchingandTempering .. ... ... ... .... ... ... 226
WD-2530 Ex amination andRepairofPlate ... ... ... ... ... ... .... ... ... 226
WD-2540 Ex amination andRepairofForg ing sandBars . ... ... ... .... ... ... 227
WD-2550 Ex amination andRepairofSeamless andWeldedTubularProducts andFitting s ... 228
WD-2580 Ex amination ofBolting . ... ... ... ... ... ... ... .... ... ... 229
WD-2600 Material Org anizations’Q ualitySystemProg rams ... ... ... .... ... ... 230
WD-2610 Documentation and MaintenanceofQ ualitySy stemProg rams .... .... ... ... 230
Ar ticleWD-3000 Desig n .... ... ... ... ... ... ... ... ... ... .... ... ... 231
WD-3100 GeneralRequirementsforDesig n .. ... ... ... ... ... .... ... ... 231
WD-3110 LoadingCriteria .. ... ... ... ... ... ... ... ... .... ... ... 231
WD-3120 Special Considerations . ... ... ... ... ... ... ... .... ... ... 232
WD-3130 GeneralDesig nRules .. ... ... ... ... ... ... ... .... ... ... 232
WD-3200 Desig nRules forPlate-andShell-Ty pe InternalSupportStructures ... ... ... 233
WD-3210 GeneralRequirements . ... ... ... ... ... ... ... .... ... ... 233
WD-3220 Desig nbyA nalysisRequirementsforPlate-andShell-Ty peInternalSupportStructure Members . ... ... ... ... ... ... ... ... .... ... ... ... 236
WD-3230 Desig nRequirementsforPlate-andShell-Ty peInternalSupportStructureBolted Joints .... ... ... ... ... ... ... ... ... .... ... ... ... 247
WD-3240 Desig nRequirementsforPlate-andShell-Ty peInternalSupportStructureWelded Joints .... ... ... ... ... ... ... ... ... .... ... ... ... 251
WD-3300 Desig nRules forLinear-TypeInternalSupportStructures .. ... .... ... ... 254
WD-3310 GeneralRequirements . ... ... ... ... ... ... .... ... ... ... 254
Ar ticleWD-4000 Fabrication ... ... ... ... ... ... ... ... .... ... ... ... 255
WD-4100 GeneralRequirements . ... ... ... ... ... ... .... ... ... ... 255
WD-4110 Introduction ... ... ... ... ... ... ... ... .... ... ... ... 255
WD-4120 CertificationofMaterialand Fabrication byCertificateHolder ... ... ... ... 255
WD-4130 RepairofMaterial ... ... ... ... ... ... ... .... ... ... ... 255
WD-4200 Forming ,Fitting , andA lig ning ... ... ... ... ... .... ... ... ... 256
WD-4210 Cutting ,Forming ,andBending .... ... ... ... ... .... ... ... ... 256
WD-4310 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 257
WD-4320 WeldingQ ualifications,Records,andIdentifyingStamps .. ... ... .... ... 258
WD-4330 GeneralRequirementsforWeldingProcedure Q ualificationTests . ... .... ... 258
WD-4400 RulesGov erningMaking ,Ex amining , andRepairingWelds . ... ... .... ... 261
WD-4410 Precautions toBe Taken BeforeWelding .. .... ... ... ... ... .... ... 261
WD-4420 RulesforMakingWeldedJoints ... ... .... ... ... ... ... .... ... 261
WD-4430 WeldingofA ttachments ... ... ... .... ... ... ... ... .... ... 262
WD-4440 Special Requirements forWelding . ... .... ... ... ... ... .... ... 263
WD-4450 RepairofWeldMetalDefects ... ... .... ... ... ... ... .... ... 264
WD-4500 Brazing .... ... ... ... ... ... .... ... ... ... ... .... ... 265
WD-4600 HeatTreatment .. ... ... ... ... .... ... ... ... ... .... ... 265
WD-4610 WeldingPreheatandInterpass Requirements . ... ... ... ... .... ... 265
WD-4620 PostweldHeatTreatment .... ... ... .... ... ... ... ... .... ... 265
WD-4630 HeatTreatmentofWeldsOtherThantheFinal Postw eldHeatTreatment ... ... 269
WD-4650 HeatTreatmentA fterBendingorForming .... ... ... ... ... .... ... 269
WD-4700 MechanicalJoints . ... ... ... ... .... ... ... ... ... .... ... 269
WD-4710 Boltingand Threading . ... ... ... .... ... ... ... ... .... ... 269
WD-4720 Bolting .... ... ... ... ... ... .... ... ... ... ... .... ... 269
A rticleWD-5000 Ex amination .... ... ... ... ... .... ... ... ... ... ... ... 271
WD-5100 GeneralRequirementsforEx amination ... .... ... ... ... ... .... ... 271
WD-5110 Procedures,Qualifications,andEvaluation .... ... ... ... ... .... ... 271
WD-5120 Time ofEx aminationofWelds ... ... .... ... ... ... ... .... ... 271
WD-5130 Ex amination ofWeldEdg ePreparation Surfaces .... ... ... ... .... ... 271
WD-5140 Ex amination ofA djacentBase Material ... .... ... ... ... ... .... ... 272
WD-5200 Required Ex aminationofWelds ... ... .... ... ... ... ... .... ... 272
WD-5210 PermissibleEx aminationMethods . ... .... ... ... ... ... .... ... 272
WD-5220 Requirements forRadiog raphyorUltrasonicandLiquidPenetrantorMag netic Par-ticle Ex amination .... ... ... ... .... ... ... ... ... .... ... 273
WD-5230 Requirements forLiquidPenetrantorMag neticParticleEx amination .. .... ... 273
WD-5260 Requirements forSurfaceV isualEx amination .. ... ... ... ... .... ... 273
WD-5270 Special Welded Joints .. ... ... ... .... ... ... ... ... .... ... 273
WD-5300 A cceptanceStandards .. ... ... ... .... ... ... ... ... .... ... 274
WD-5320 Radiog raphicA cceptanceStandards ... .... ... ... ... ... .... ... 274
WD-5330 UltrasonicAcceptance Standards .. ... .... ... ... ... ... .... ... 274
WD-5340 Mag neticParticleA cceptance Standards .. .... ... ... ... ... .... ... 274
WD-5350 Liquid PenetrantA cceptanceStandards ... .... ... ... ... ... .... ... 274
WD-5360 V isualEx aminationA cceptance Standards . .... ... ... ... ... .... ... 275
WD-5500 Q ualificationsand CertificationofNondestructive Ex aminationPersonnel ... ... 275
WD-5510 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 275
WD-5520 PersonnelQ ualification,Certification, and V erification .... ... ... .... ... 275
WD-5530 Records .... ... ... ... ... ... .... ... ... ... ... .... ... 276
A rticleWD-8000 Nameplates,StampingWithCertificationMark,andReport .. ... .... ... 277
WD-8100 GeneralRequirements . ... ... ... .... ... ... ... ... .... ... 277
FIGURES WA -8212-1 FormofStamping ... ... ... ... ... ... ... ... .... ... ... .. 21
WB-2433.1-1 WeldMetalDelta FerriteContent ... ... ... ... ... .... ... ... .. 45
WB-2552.1-1 Ax ialPropag ationofSoundinTubeWall .... ... ... ... .... ... ... .. 50
WB-3221-1 StressCateg oriesand LimitsofStress IntensityforDesig nLoading s ... ... .. 67
WB-3222-1 StressCateg oriesand LimitsofStress IntensityforNormalLoading s ... ... .. 68
WB-3224.1-1 StressCateg oriesand LimitsofStress IntensityforA ccidentLoading sforElastic A naly sis .... ... ... ... ... ... ... ... ... .... ... ... .. 72
WB-3251-1 Welded JointLocations Ty pical ofCateg oriesA ,B,C,and D .... .... ... ... .. 76
WB-4221.1-1 Max imumDifferenceinCross‐SectionalDiameters ... ... ... ... ... .. 84
WB-4221.2(a)-1 Max imumPermissible Deviatione FromaTrueCircularForm . ... ... ... .. 85
WB-4221.2(a)-2 Max imumA RCLeng th forDeterminingPlus orMinusDeviation ... ... ... .. 86
WB-4233(a)-1 ButtWeldA lig nmentandMismatchTolerancesforUnequalI.D.andO.D.WhenItems A reWeldedFromOne SideandFairingIsNotPerformed ... ... ... ... .. 87
WB-4243-1 A cceptable FullPenetrationWeldDetails forCateg oryCJoints . ... ... ... .. 88
WB-4243-2 Ty picalFlatHeadsWithHubs ... ... ... .... ... ... ... ... ... .. 89
WB-4244(a)-1 NozzlesA ttachedbyFull Penetration ButtWelds .. ... ... ... ... ... .. 90
WB-4244(b)-1 NozzlesA ttachedbyFull Penetration CornerWelds .... ... ... ... ... .. 91
WB-4244(c)-1 Deposited Weld MetalUsed asReinforcementofOpening sforNozzles .... ... .. 93
WB-4244(d)-1 NozzlesA ttachedbyPartialPenetrationWelds ... ... ... ... ... ... .. 94
WB-4427-1 FilletWeldDetails ... ... ... ... ... .... ... ... ... ... ... .. 99
WB-4433-1 Ty pes ofA ttachmentWelds ... ... ... .... ... ... ... ... ... .. 100
WB-4622.9(c)(8)-1 TemperBeadWeldRepairandWeldTemperBeadReinforcement ... ... ... .. 105
WB-4622.9(c)(8)-2 TemperBeadReinforcement .... ... ... .... ... ... ... ... ... .. 106
WB-4622.9(f)-1 Qualification TestPlate .... ... ... ... .... ... ... ... ... ... .. 107
WB-4622.11(c)(6)-1 TemperBeadWeldRepairandWeldTemperBeadReinforcementofDissimilarMetal WeldsorButtering ... ... ... ... .... ... ... ... ... ... .. 110
WC-2433.1-1 WeldMetalDelta FerriteContent ... ... .... ... ... ... ... ... .. 138
WC-3224.6-1 Desig nCurves forTorispherical Heads and2:1 EllipsoidalHeadsforUse With WC-3224.8andWC-3224.6 ... ... ... .... ... ... ... ... ... .. 155
WC-3225-1 Ty picalFlatHeads ... ... ... ... ... .... ... ... ... ... ... .. 157
WC-3225-2 SomeA cceptableTy pesofUnstay ed FlatHeadsandCov ers .... ... ... ... .. 158
WC-3225-3 A ttachmentofFlatHeads toContainmentShell ... ... ... ... ... ... .. 159
WC-3232.2-1 ChartforDeterminingtheValueofF .. ... .... ... ... ... ... ... .. 161
WC-3251-1 Welded JointLocations Typical ofCateg oriesA ,B,C, and D .... ... ... ... .. 162
WC-3251-2 Ty picalButtJoints ... ... ... ... ... .... ... ... ... ... ... .. 163
WC-3261-1 Categ oriesAandBJointsBetweenSectionsofUnequalThickness ... ... ... .. 165
WC-4221.1-1 Max imumDifferenceinCross‐SectionalDiameters ... ... ... ... ... .. 169
WC-4221.2(a)-1 Max imumPermissible Deviatione FromaTrueCircularForm . ... ... ... .. 170
WC-4221.2(a)-2 Max imumA RCLeng thforDeterminingPlus orMinusDev iation ... ... ... .. 171
WC-4233-1 ButtWeldA lig nmentandMismatchTolerancesforUnequalI.D.andO.D.WhenItems A reWeldedFromOne SideandFairingIsNotPerformed ... ... ... ... .. 173
WC-4265-1 A cceptable FullPenetrationWeldDetails forCateg oryCJoints . ... ... ... .. 174
WC-4265-2 Ty picalPartialPenetration Weld DetailforCateg oryCFlatHeadClosureJoints .. .. 175
WC-4265-3 Ty picalFlatHeads ... ... ... ... ... .... ... ... ... ... ... .. 176
WC-4266(a)-1 NozzlesA ttachedbyFull Penetration ButtWelds .. ... ... ... ... ... .. 177
WC-4266(b)-1 FullPenetrationCorner-WeldedAttachments . .... ... ... ... ... ... .. 178
WC-4266(c)-1 Deposited Weld MetalUsed asReinforcementofOpening sforNozzles .... ... .. 179
WC-4266(d)-1 Fitting sWithInternal Threads .. ... ... .... ... ... ... ... ... .. 179
WC-4266(e)-1 PartialPenetration WeldConnections . ... .... ... ... ... ... ... .. 180
WC-4427-1 FilletandSocketWeld DetailsandDimensions ... ... ... ... ... ... .. 185
WC-4433-1 Ty picalTy pesofA ttachmentWelds ... ... .... ... ... ... ... ... .. 186
WC-4433-2 Ty picalAttachments . ... ... ... ... .... ... ... ... ... ... .. 187
WC-4622.10(c)(7)-1 TemperBeadWeldRepairandWeldTemperBeadReinforcement .. ... ... .. 194
WC-4622.10(c)(7)-2 TemperBeadReinforcement .... ... ... .... ... ... ... ... ... .. 195
WC-4622.10(f)-1 Qualification TestPlate .... ... ... ... .... ... ... ... ... ... .. 196
WC-4622.12(c)(6)-1 TemperBeadWeldRepairandWeldTemperBeadReinforcementofDissimilarMetal WeldsorButtering ... ... ... ... .... ... ... ... ... ... .. 198
WD-1131-1 JurisdictionalBoundaryBetw eentheInternal SupportStructure andthe Containment . ... ... ... ... ... .... ... ... ... ... ... .. 214
WD-2433.1-1 WeldMetalDelta FerriteContent ... ... .... ... ... ... ... ... .. 225
WD-3221-1 Stress Categ oriesand LimitsofStress IntensitiesforDesig nLoading s ... ... .. 238
WD-3222-1 Stress Categ oriesand LimitsofStress IntensitiesforNormalLoading s .... ... .. 239
WD-4441-1 WeldInlayandOv erlaySpecifications . ... .... ... ... ... ... ... .. 264
T ABLES WA -4134.17-1 LifetimeQualityA ssurance Records ... ... ... ... ... ... ... ... ... 13
WA -4134.17-2 NonpermanentQualityA ssurance Records .... ... ... ... ... ... ... ... 13
WA -7100-1 DimensionalStandards . ... ... ... ... ... ... ... ... ... ... ... 17
WA -7100-2 StandardsandSpecifications ReferencedinDiv ision 3 .... ... ... ... ... ... 18
WA -8100-1 A uthorizationsandCertificationMarkIssuedbytheSocietyfortheConstructionof Transportation andStorag eComponentsandParts ... ... ... ... ... ... 19
WB-2331.2-1 Required LST‐RT NDT V aluesforFerriticSteel MaterialforContainmentMaterial . .... 39
WB-2331.2-2 RequiredFractureToug hnessV aluesforFerriticSteelMaterialforContainmentsHavinga SpecifiedYieldStreng thof50ksi(350000kPa) orLess at100°F(38°C) . ... .... 39
WB-2332(a)-1 RequiredC v ValuesforPiping ... ... ... ... ... ... ... ... ... ... 40
WB-2333-1 Required C v ValuesforBoltingMaterial .. ... ... ... ... ... ... ... ... 40
WB-2432.1-1 SamplingofWeldingMaterials forChemicalA naly sis ... ... ... ... ... ... 43
WB-2432.2-1 ChemicalA naly sis forWeldingMaterial .. ... ... ... ... ... ... ... ... 44
WB-3133.4-1 V aluesofSphericalRadiusFactor,K 1 ... ... ... ... ... ... ... ... ... 59
WB-3217-1 Classification ofStressIntensityinContainmentsforSome Typical Cases ... ... ... 65
WB-4232-1 Max imum A llow able OffsetinFinalWelded Joints ... ... ... ... ... ... ... 86
WB-4622.1-1 MandatoryRequirements forPostweldHeatTreatmentofWelds ... ... ... ... 102
WB-4622.4(c)-1 A lternativ eHoldingTemperaturesandTimes .. ... ... ... ... ... ... ... 102
WB-4622.7(b)-1 Ex emptions toMandatoryPWHT .. ... ... ... ... ... ... ... ... ... 103
WB-5111-1 Thickness, IQ I Desig nations, EssentialHoles,andWire Diameters ... ... ... ... 113
WC-2311(a)-1 Ex emptions FromImpactTestingUnderWC-2311(a)(7) .. ... ... ... ... ... 130
WC-2332.1-1 RequiredC v LateralEx pansion V aluesforContainmentMaterial OtherThanBolting ... 131
WC-2332.1-2 Required C v Energ yV alues forContainmentMaterialOtherThan Bolting ... ... ... 132
WC-2332.3-1 Required C v ValuesforBoltingMaterial TestedinA ccordanceWithWC-2332.3 ... .... 132
WC-2432.1-1 SamplingofWeldingMaterials forChemicalA naly sis ... ... ... ... ... ... 136
WC-2432.2-1 WeldingMaterial Chemical A naly sis ... ... ... ... ... ... ... ... ... 137
WC-3133.4-1 V aluesofSphericalRadiusFactor,K 1 ... ... ... ... ... ... ... ... ... 149
WC-3217-1 Stress Intensityk Factors forDesig nandOperatingLoadCombinations .... ... ... 152
WC-3262-1 Stress ReductionFactors andEx aminationsforClosure Welds .. ... ... ... ... 165
WC-4232(a)-1 Max imum A llow able OffsetinFinalWelded Joints ... ... ... ... ... ... ... 172
WC-4524-1 Max imum Desig nTemperaturesforBrazingFillerMetal,°F(°C) . ... ... ... ... 189
WC-4622.1-1 MandatoryRequirements forPostweldHeatTreatmentofWelds ... ... ... ... 190
WC-4622.4(c)-1 A lternativ eHoldingTemperaturesandTimes .. ... ... ... ... ... ... ... 191
WC-4622.7(b)-1 Ex emptions toMandatoryPWHT .. ... ... ... ... ... ... ... ... ... 192
WC-5111-1 Thickness, IQ I Desig nations, EssentialHoles,andWire Diameters ... ... ... ... 202
WD-2331(a)-1 RequiredC v V aluesforInternalSupportStructureMaterialWith2in.(50mm)Max imum Thickness(OtherThanBolting ) . ... ... ... ... ... ... ... .... .... 219
WD-2333-1 RequiredC v ValuesforBoltingMaterial .. ... ... ... ... ... ... ... ... 220
WD-2432.1-1 SamplingofWeldingMaterials forChemicalA naly sis ... ... ... ... ... ... 224
WD-2432.2-1 WeldingMaterial Chemical A naly sis ... ... ... ... ... ... ... ... ... 224
WD-3217-1 ClassificationofStress IntensitiesforSomeTy picalCases . ... ... ... ... ... 237
WD-3229.2-1 V aluesofKforV arious BoundaryConditionsanda/b Ratios ... ... ... ... ... 247
WD-3234-1 Stress LimitFactors forBoltDesig n byA naly sis ... ... ... ... ... ... ... 248
WD-3234.1(d)-1 Effectiv eSlipCoefficientVersus SurfaceCondition ... ... ... ... ... ... ... 249
WD-3234.2-1 Max imum SizesofBoltHoles . ... ... ... ... ... ... ... ... ... ... 250
WD-3234.3(a)-1 Minimum Edg eDistances .... ... ... ... ... ... ... ... ... ... ... 250
WD-3234.4-1 IncrementC1forMinimumSpacingBetween Ov ersized and SlottedHoles .. ... .... 251
WD-3235.4-1 Classification ofLoadingConditions ... ... ... ... ... ... ... ... ... 251
WD-3235.5-1 Stress Categ ories ... ... ... ... ... ... ... ... ... ... ... ... 252
WD-3235.6-1 AllowableStress Rang es ... ... ... ... ... ... ... ... ... ... ... 252
WD-3240-1 PermissibleWeldedJointsandDesig nFactors . ... ... ... ... ... ... ... 253
WD-4622.7(b)-1 Ex emptions toMandatoryPWHT .. ... ... ... ... ... .... ... ... .... 268
WD-5111-1 Thickness, IQIDesig nations, EssentialHoles,andWire Diameters ... ... ... .... 272
FORMS N-7 NuclearContainments . ... ... .... ... ... ... ... ... ... .... ... ... .... 23
N-8 ForClassSC orTCClosure Welds .. .... ... ... ... ... ... ... .... ... ... .... 25
N-9 ShopFabricated Parts . ... ... .... ... ... ... ... ... ... .... ... ... .... 26
N-11 CertificateHolder’sDataReportforInternalSupportStructures . ... ... .... ... ... .... 28
SECTIONS
I Rules forConstructionofPow erBoilers
II Materials
• PartA—Ferrous MaterialSpecifications
• PartB—Nonferrous MaterialSpecifications
• PartC—SpecificationsforWeldingRods,Electrodes, andFillerMetals
• PartD—Properties (Customary)
• PartD—Properties (Metric)
III Rules forConstructionofNuclearFacilityComponents
• Subsection NCA—General RequirementsforDivision1and Division2
• A ppendices
• Div ision1 *
– Subsection NB—Class1Components
– Subsection NC —Class2 Components
– Subsection ND—Class3Components
– Subsection NE —Class MC Components
– Subsection NF—Supports
– Subsection NG—Core SupportStructures
• Division2 —Code forConcrete Containments
• Division3 —ContainmentSy stems forTransportation andStorag eofSpentNuclearFuelandHig h-Level
Radioactiv eMaterial
• Division5 —Hig hTemperature Reactors
IV Rules forConstructionofHeatingBoilers
V NondestructiveEx amination
V I RecommendedRulesfortheCareandOperationofHeatingBoilers
V II RecommendedGuidelines fortheCareofPowerBoilers
V III Rules forConstructionofPressureV essels
• Division1
• Division2 —A lternativeRules
• Division3 —A lternativeRulesforConstruction ofHig h Pressure Vessels
IX Welding ,Brazing ,andFusingQ ualifications
X Fiber-Reinforced PlasticPressureV essels
X I Rules forInserviceInspection ofNuclearPowerPlantComponents
X II Rules forConstructionandContinuedServiceofTransportTanks
*
The2015EditionofSectionIIIwasthelasteditioninwhichSectionIII,Div ision1,SubsectionNH,Class1ComponentsinElevated
Tem-pe ratureServic e,waspublished.TherequirementslocatedwithinSubsectionNHw eremovedtoSectionIII,Div ision5,SubsectionHB,Subpart
InterpretationsareissuedinrealtimeinA SME’sInterpretationsDatabaseathttp://g o.asme.org /Interpretations.
His-torical BPV CinterpretationsmayalsobefoundintheDatabase.
CODE CA SES
TheBoilerandPressureV esselCodecommitteesmeetreg ularlytoconsiderproposedadditionsandrevisionstothe
CodeandtoformulateCasestoclarifytheintentofex istingrequirementsorprovide,whentheneedisurg ent,rulesfor
materials orconstructionsnotcovered byex istingCoderules.ThoseCases thathav ebeen adoptedwillappearinthe
appropriate2017CodeCasesbook:“BoilersandPressureV essels”or“NuclearComponents.”Supplementswillbesent
FOREWOR D
In1911,TheA mericanSocietyofMechanicalEng ineersestablishedtheBoilerandPressureVesselCommitteeto
for-mulatestandardrulesfortheconstructionofsteamboilersandotherpressurev essels.In2009,theBoilerandPressure
V esselCommitteewassupersededbythefollow ingcommittees:
(a)Committee onPow erBoilers (I)
(b)Committee onMaterials (II)
(c)Committee onConstruction ofNuclearFacilityComponents(III)
(d)Committee onHeatingBoilers (IV )
(e)Committee onNondestructiv eEx amination(V )
(f) Committee onPressure Vessels (V III)
(g)Committee onWelding , Brazing , andFusing(IX )
(h)Committee onFiber-ReinforcedPlasticPressureV essels (X )
(i) Committee onNuclearInserv iceInspection(X I)
(j) Committee onTransportTanks(X II)
(k)TechnicalOversig htManag ementCommittee(TOMC)
Wherereferenceismadeto“theCommittee”inthisForeword,eachofthesecommitteesisincludedindiv iduallyand
collectiv ely .
The Committee’s function is to establish rules ofsafetyrelatingonlyto pressure integrity, which govern the
construction **
ofboilers,pressurev essels,transporttanks,andnuclearcomponents,andtheinserv iceinspectionof
nu-clearcomponentsandtransporttanks.TheCommitteealsointerpretstheseruleswhenquestionsarisereg ardingtheir
intent.ThetechnicalconsistencyoftheSectionsoftheCodeandcoordinationofstandardsdev elopmentactiv itiesofthe
Committeesissupported andg uided bytheTechnical Oversig htManag ementCommittee.ThisCodedoesnotaddress
othersafetyissues relatingtotheconstructionofboilers,pressurevessels,transporttanks,ornuclearcomponents,or
theinserviceinspectionofnuclearcomponentsortransporttanks.UsersoftheCodeshouldrefertothepertinentcodes,
standards,laws,reg ulations,orotherrelev antdocumentsforsafetyissuesotherthanthoserelatingtopressure integ
-rity .Ex ceptforSections X IandX II,andwithafewotherex ceptions,therulesdonot,ofpracticalnecessity ,reflectthe
likelihoodandconsequencesofdeteriorationinservicerelatedtospecificservicefluidsorex ternaloperatingenv
iron-ments.Informulatingtherules,theCommitteeconsiderstheneedsofusers,manufacturers,andinspectorsofpressure
v essels.Theobjectiveoftherulesistoaffordreasonablycertainprotectionoflifeandproperty ,andtoprov ideamarg in
fordeteriorationinservicetog iv eareasonablylong ,safeperiodofusefulness.A dvancementsindesig nandmaterials
andevidence ofex perience hav ebeenrecog nized.
ThisCodecontains mandatoryrequirements,specificprohibitions,andnonmandatoryg uidanceforconstruction
ac-tiv itiesandinserviceinspectionandtestingactivities.TheCodedoesnotaddressallaspectsoftheseactivitiesandthose
aspectsthatarenotspecificallyaddressedshouldnotbeconsideredprohibited.TheCodeisnotahandbookandcannot
replaceeducation,ex perience,andtheuseofeng ineeringjudg ment.Thephraseengineeringjudgmentreferstotechnical
judg mentsmadebyknowledg eableeng ineersex periencedintheapplicationoftheCode.Eng ineeringjudg mentsmust
beconsistentwithCodephilosophy ,andsuch judgments mustnev erbeusedtoov errulemandatoryrequirements or
specificprohibitions ofthe Code.
TheCommitteerecog nizesthattoolsand techniques usedfordesign and analysischang eastechnolog yprog resses
andex pectseng ineerstouseg oodjudg mentintheapplicationofthesetools.Thedesig nerisresponsibleforcomply ing
w ithCode rulesand demonst ratingcompliance w it hCode equations w hensuchequat ionsaremandat ory .TheCode
neit herrequires norprohibits the useofcomputers forthe design oranalysis ofcomponent s construct ed to the
*
Theinfor mationcontainedinthisFor ewordisnotpar tofthisA mericanNationalStandard(A NS)andhasnotbeenprocessedinaccordance
withA NSI'srequir ementsforanA NS.Therefore,thisForew ordmaycontainmaterialthathasnotbeensubjectedtopublicr eviewora
con-sensusprocess.Inaddition,itdoesnotcontainrequir ementsnecessaryforconformancetotheCode.
**
Construc tion,asusedinthisForew ord,isanall-inclusiv eter mcompr isingmaterials,desig n,fabrication,ex amination,inspection,testing ,
tionedthattheyareresponsibleforalltechnicalassumptionsinherentintheprog ramstheyuseandtheapplicationof
theseprog ramstotheirdesig n.
TherulesestablishedbytheCommitteearenottobeinterpretedasapprov ing ,recommending ,orendorsingany
pro-prietaryorspecificdesig n,oraslimitinginanywaythemanufacturer’sfreedomtochooseanymethodofdesig norany
formofconstructionthatconformstothe Coderules.
TheCommitteemeetsreg ularlytoconsiderrev isionsoftherules,newrulesasdictatedbytechnolog icaldev elopment,
CodeCases,andrequestsforinterpretations.OnlytheCommitteehastheauthoritytoprov ideofficialinterpretationsof
thisCode.Requestsforrevisions,newrules,CodeCases,orinterpretationsshallbeaddressedtotheSecretaryinwriting
andshallg iv efull particularsin ordertoreceiveconsiderationandaction(seeSubmittalofTechnicalInquiries tothe
BoilerandPressureV esselStandardsCommittees).ProposedrevisionstotheCoderesultingfrominquirieswillbe
pre-sentedtotheCommitteeforappropriateaction.TheactionoftheCommitteebecomeseffectiveonlyafterconfirmation
byballotoftheCommitteeandapprovalbyA SME.Proposedrev isionstotheCodeapprov edbytheCommitteeares
ub-mittedtotheA mericanNationalStandardsInstitute(A NSI) andpublishedathttp://g o.asme.org /BPV CPublicRev iewto
inv itecommentsfromallinterestedpersons.A fterpublicreviewandfinalapprov albyA SME,revisionsarepublishedat
reg ularintervals inEditions ofthe Code.
TheCommitteedoesnotruleonwhetheracomponentshallorshallnotbeconstructedtotheprov isionsoftheCode.
ThescopeofeachSectionhasbeenestablishedtoidentifythecomponentsandparametersconsideredbytheCommittee
informulatingtheCoderules.
Q uestionsorissuesreg ardingcomplianceofaspecificcomponentw iththeCoderulesaretobedirectedtotheA SME
CertificateHolder(Manufacturer).InquiriesconcerningtheinterpretationoftheCodearetobedirectedtothe
Commit-tee.A SME istobenotified shouldquestions arise concerningimproperuseofan A SME CertificationMark.
Whenrequiredbycontex tinthisSection,thesing ularshallbeinterpretedastheplural,andvicev ersa,andthe
MA RK A ND CODE A UT HORIZA T ION IN A DV ER T ISING
A SME hasest ablishedprocedures t oaut horize qualified organizations toperformv arious activ it iesinaccordance
w iththerequirementsoftheA SMEBoilerandPressureV esselCode.ItistheaimoftheSocietytoproviderecog nition
oforg anizationssoauthorized.A norg anizationholdingauthorizationtoperformv ariousactiv itiesinaccordancew ith
therequirementsoftheCodemaystatethiscapabilityinits advertisingliterature.
Organizationsthatareauthorizedtouse theCert ification Markformark ingit ems orconstructionsthathav ebeen
construct ed and inspect edincompliance wit h t heASMEBoilerand PressureV essel Code are issuedCert ificat es of
Authorization.ItistheaimoftheSocietytomaintainthestandingoftheCertificationMarkforthebenefitoftheusers,
theenforcementjurisdictions,andtheholdersofthe CertificationMarkwhocomplywithallrequirements.
Basedontheseobjectives, the followingpolicyhasbeenestablishedonthe usag einadvertisingoffacsimilesofthe
CertificationMark,CertificatesofAuthorization,andreferencetoCodeconstruction.TheA mericanSocietyofMechanical
Eng ineersdoesnot“approve,”“certify,”“rate,”or“endorse”anyitem,construction,oractivityandthereshallbeno
state-ment s orimplicat ionst hatmightsoindicat e.An organizat ionholdingt heCert ification Markand/oraCert ificate of
Aut horizationmayst ate inadv ertisingliteraturethatit ems,const ruct ions, oractiv it ies“arebuilt(producedor
per-for med) oractivitiesconducted inaccordance w it htherequirement s oftheASME BoilerandPressureV essel Code,”
or“meetthe requirement soft he ASMEBoilerand Pressure VesselCode.”A nA SME corporatelogoshall notbe used
byanyorg anizationotherthanA SME.
TheCertificationMarkshallbeusedonlyforstampingandnameplatesasspecificallyprovidedintheCode.However,
facsimilesmaybeusedforthepurposeoffosteringtheuseofsuchconstruction.Suchusag emaybebyanassociationor
asociety,orbyaholderoftheCertificationMarkwhomayalsousethefacsimileinadvertisingtoshowthatclearly
spe-cifieditemswill carrythe Cert ificationMark.Generalusageis permit tedonlywhenallofamanufacturer’s items are
constructed undertherules.
ST A T EMENT OF POLICY ON T HE USE OF A SME MA R KING T O
IDENT IFY MA NUFA CT URED IT EMS
TheA SMEBoilerandPressureV esselCodeprov idesrulesfortheconstructionofboilers,pressurev essels,andnuclear
components.Thisincludesrequirementsformaterials,desig n,fabrication,ex amination,inspection,andstamping .Items
constructedinaccordancewithalloftheapplicablerules oftheCode areidentifiedwiththeofficialCertificationMark
describedintheg overningSectionoftheCode.
Marking ssuchas“A SME,”“A SMEStandard,”oranyothermarkingincluding“A SME”ortheCertificationMarkshallnot
beusedonanyitemthatisnotconstructed inaccordancew ithalloftheapplicablerequirementsoftheCode.
ItemsshallnotbedescribedonA SMEDataReportFormsnoronsimilarformsreferringtoA SMEthattendtoimply
thatallCoderequirementshavebeenmetw hen,infact,theyhav enotbeen.DataReportFormscov eringitemsnotfully
complyingwithA SMErequirementsshouldnotrefertoASMEortheyshouldclearlyidentifyallex ceptionstotheA SME
PRESSURE V ESSEL ST A NDA RDS COMMIT T EES
1 INT RODUCT ION
(a)Thefollow inginformation prov ides guidancetoCode users forsubmit tingtechnicalinquiries tothe applicable
BoilerandPressureV essel(BPV ) Standards Committee (hereinafterreferredtoastheCommittee).See theg uidelines
onapprov alofnewmaterialsundertheASMEBoilerandPressureV esselCodeinSectionII,PartDforrequirementsfor
requeststhatinv olv eaddingnewmaterialstotheCode.Seetheg uidelinesonapprov alofnewweldingandbrazing
ma-terialsinSectionII,PartCforrequirementsforrequeststhatinv olveaddingnewweldingandbrazingmaterials
(“con-sumables”) totheCode.
Technicalinquiriescanincluderequestsforrev isionsoradditionstotheCoderequirements,requestsforCodeCases,
orrequestsforCodeInterpretations, asdescribedbelow :
(1)CodeR evisions.Coderev isions areconsideredtoaccommodatetechnolog icaldevelopments,toaddress
admin-istrative requirements,toincorporateCode Cases,ortoclarifyCode intent.
(2)CodeCases.CodeCasesrepresentalternativesoradditionstoex istingCoderequirements.CodeCasesarew
rit-tenasaQuestionandReply,andareusuallyintendedtobeincorporatedintotheCodeatalaterdate.Whenused,Code
Casesprescribemandatoryrequirementsinthesamesenseasthetex toftheCode.Howev er,usersarecautionedthat
notallregulators, jurisdictions, orOwnersautomaticallyacceptCodeCases. ThemostcommonapplicationsforCode
Casesare as follow s:
(-a) topermitearlyimplementationofan approvedCoderevisionbasedon anurg entneed
(-b) topermituse ofanewmaterialforCode construction
(-c) tog ainex periencewithnewmaterials oralternativ erequirements priortoincorporation directlyintothe
Code
(3)CodeInterpretations
(-a) CodeInterpretations provideclarificationofthemeaningofex istingrequirementsintheCodeandare
pre-sentedinInquiryandReplyformat.Interpretations donotintroduce newrequirements.
(-b) Ifex istingCodetex tdoes notfullyconv eythemeaningthatw as intended,orconv ey sconflictingre
quire-ments,andrevisionoftherequirementsisrequiredtosupporttheInterpretation,anIntentInterpretationwillbeissued
inparallelw itharevision totheCode.
(b)Coderequirements,CodeCases,andCodeInterpretationsestablishedbytheCommitteearenottobeconsidered
asapproving ,recommending ,certifying , orendorsinganyproprietaryorspecificdesig n,oraslimitingin anyw aythe
freedomofmanufacturers,constructors,orOw ners tochoose anymet hod ofdesig noranyformofconstructionthat
conforms totheCoderequirements.
(c) Inquiriesthatdonotcomplywiththefollowingg uidanceorthatdonotprov idesufficientinformationforthe
Com-mittee’s fullunderstandingmayresultintherequestbeingreturnedtothe Inquirerwithnoaction.
2 INQUIRY FORMA T
Submittals totheCommitteeshould include the follow inginformation:
(a)Purpose. Specifyoneofthefollowing :
(1)requestforrevisionofpresentCoderequirements
(2)requestforneworadditional Coderequirements
(3)requestforCodeCase
(4)requestforCodeInterpretation
(b)B ac kground. The Inquirershouldprov ide the informat ion neededfortheCommit tee’s understandingofthe
In-quiry,beingsure toincludereference tothe applicable Code Section,Division, Edit ion,A ddenda(ifapplicable),
para-graphs,figures, andtables.Preferably ,t he Inquirershould prov ideacopyof,orrelev antext ract s from, t hespecific
malpresentationortoanswerquestionsfromtheCommitteemembersw ithreg ardtotheInquiry.A ttendanceataBPV
StandardsCommitteemeetingshallbeattheex penseoftheInquirer.TheInquirer’sattendanceorlackofattendanceat
ameetingwillnotbeusedbytheCommitteeasabasisforacceptanceorrejectionoftheInquirybytheCommittee.
How-ev er,iftheInquirer’srequestisunclear,attendancebytheInquirerorarepresentativemaybenecessaryforthe
Com-mittee tounderstand therequestsufficientlytobe abletoprov idean Interpretation. IftheInquirerdesirestomakea
presentationataCommitteemeeting ,theInquirershouldprov ideadv ancenoticetotheCommitteeSecretary,toensure
timew illbeallottedforthepresentationinthemeetingag enda.TheInquirershouldconsidertheneedforadditional
audiov isual equipmentthatmig htnototherwisebeprov idedbythe Committee. Withsufficientadv ance notice tothe
CommitteeSecretary,such equipmentmaybemadeav ailable.
3 CODE REV ISIONSOR A DDIT IONS
RequestsforCoderevisions oradditions shouldincludethefollowinginformation:
(a)R equestedR evisionsorAdditions. Forrequested revisions,theInquirershould identifythoserequirementsofthe
Codethattheybelieveshouldberevised,andshouldsubmitacopyof,orrelev antex tractsfrom,theappropriate
require-mentsastheyappearintheCode,markedupw iththerequestedrev ision.ForrequestedadditionstotheCode,the
In-quirershouldprovidetherecommendedwordingandshouldclearlyindicatewheretheybelievetheadditionsshouldbe
located inthe Coderequirements.
(b)StatementofNeed.TheInquirershouldprov ide abriefex planationoftheneedfortherevisionoraddition.
(c)B ackgroundInformation.TheInquirershouldprov idebackg roundinformationtosupporttherev isionoraddition,
includinganydataorchang esintechnolog ythatformthebasisfortherequest, thatwillallowtheCommitteeto
ade-quatelyevaluatetherequestedrev isionoraddition.Sketches,tables,fig ures,andg raphsshouldbesubmitted,as
appro-priate.TheInquirershouldidentifyanypertinentportionsoftheCodethatwouldbeaffectedbytherevisionoraddition
andanyportionsofthe Codethatreferencetherequestedrevisedoraddedparag raphs.
4 CODE CA SES
RequestsforCodeCasesshouldbeaccompaniedbyastatementofneedandbackg roundinformationsimilartothat
describedin3(b)and3(c),respectively,forCoderevisionsoradditions.Theurg encyoftheCodeCase(e.g .,project
un-derw ayorimminent,newprocedure)shouldbedescribed.Inaddition,itisimportantthattherequestisinconnection
withequipmentthatwillbeartheCertificationMark,withtheex ceptionofSectionX Iapplications.TheproposedCode
CaseshouldidentifytheCodeSectionandDiv ision,andshouldbewrittenasaQ uestionandaReply,inthesameformat
asex istingCode Cases.RequestsforCodeCasesshouldalsoindicatetheapplicableCodeEditionsandA ddenda(if
ap-plicable) towhichtherequested CodeCase applies.
5 CODE INT ERPRET AT IONS
(a)RequestsforCodeInterpretations shouldbeaccompaniedbythefollowinginformation:
(1)Inquiry.TheInquirershouldproposeacondensedandpreciseInquiry ,omittingsuperfluousbackg round
infor-mationand,whenpossible,composingthe Inquiryinsuchawaythata“y es”ora“no”Reply, withbrieflimitationsor
conditions,ifneeded, canbeprov idedbytheCommittee.The proposed questionshould be technicallyandeditorially
cor rect.
(2)R eply.TheInquirershouldpropose aReplythatclearlyandconciselyanswers theproposed Inquiryquestion.
Preferably ,theReplyshouldbe “y es”or“no,”withbrieflimitationsorconditions,ifneeded.
(3)B ackgroundInformation.TheInquirershouldprov ideanyneedorbackg roundinformation,suchasdescribedin
3(b)and3(c),respectively,forCoderevisionsoradditions,thatw illassisttheCommitteeinunderstandingtheproposed
Inquiryand Reply.
Ifthe Inquirerbeliev esarev isionoftheCoderequirement s would behelpfultosupportthe Interpretation,the
In-quirermayproposesucharev isionforconsiderationbytheCommittee.Inmostcases,suchaproposalisnotnecessary.
(b)RequestsforCodeInterpretationsshouldbelimitedtoanInterpretationofaparticularrequirementintheCodeor
inaCodeCase.Ex ceptw ithreg ardtointerpretingaspecificCoderequirement,theCommitteeisnotpermittedto
con-siderconsulting -ty perequestssuch asthefollow ing :
(1)areviewofcalculations,desig n drawing s,weldingqualifications, ordescriptionsofequipmentorparts to
selection, desig ns,calculations, fabrication,inspection,pressuretesting ,orinstallation
(3)arequestseekingtherationale forCoderequirements
6 SUBMIT T ALS
(a)Submittal .RequestsforCodeInterpretationshouldpreferablybesubmittedthroug htheonlineInterpretationS
ub-mittalForm.Theformis accessibleatht tp://go.asme.org/InterpretationR equest. Upon submittal oftheform,the
In-quirerwill receive an automatice-mail confirmingreceipt. Ifthe Inquireris unable to use the online form, the
Inquirermaymailtherequesttothefollowingaddress:
Secretary
ASMEBoilerand Pressure Vessel Committee
TwoParkA v enue
NewYork,NY10016-5990
AllotherInquiriesshouldbemailedtotheSecretaryoftheBPVCommitteeattheaddressabov e.Inquiriesareunlikely
toreceiv earesponseiftheyarenotwritteninclear,leg ibleEng lish.TheymustalsoincludethenameoftheInquirerand
thecompanytheyrepresentorareemploy edby,ifapplicable,andtheInquirer’saddress,telephonenumber,fax
num-ber,ande-mailaddress, ifavailable.
(b)R esponse.TheSecretaryoftheappropriateCommitteew illprov ideaw rittenresponse,vialetterore-mail,as
ap-propriate,totheInquirer,uponcompletionoftherequestedactionbytheCommittee.Inquirersmaytrackthestatusof
