2013ASMEBoilerandPressureVesselCodeANINTERNATIONALCODEVIIIRulesforConstructionofPressureVesselsDivision2AlternativeRulesVIIIRULESFORCONSTRUCTIONOFPRESSUREVESSELSDivision2AlternativeRulesASMEBoilerandPressureVesselCommitteeonPressureVesselsANINTERNATIONALCODE2013ASMEBoiler&PressureVesselCode2013EditionJuly1,2013TwoParkAvenue�NewYork,NY�10016USADateofIssuance:July1,2013ThisinternationalcodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmer-icanNationalStandardsanditisanAmericanNationalStandard.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanoppor-tunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatpro-videsanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large.ASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivity.ASMEdoesnottakeanypositionwithrespecttothevalidityofanypatentrightsassertedinconnectionwithanyitemsmentionedinthisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareex-presslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtheriskofinfringementofsuchrights,isentirelytheirownresponsibility.Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentorindustryendorsementofthiscodeorstandard.ASMEacceptsresponsibilityforonlythoseinterpretationsofthisdocumentissuedinaccordancewiththeestab-lishedASMEproceduresandpolicies,whichprecludestheissuanceofinterpretationsbyindividuals.Theendnotesinthisdocument(ifany)arepartofthisAmericanNationalStandard.ASMEcollectivemembershipmarkCertificationMarkTheaboveASMEsymbolisregisteredintheU.S.PatentOffice.“ASME”isthetrademarkofTheAmericanSocietyofMechanicalEngineers.Nopartofthisdocumentmaybereproducedinanyform,inanelectronicretrievalsystemorotherwise,withoutthepriorwrittenpermissionofthepublisher.LibraryofCongressCatalogCardNumber:563934PrintedintheUnitedStatesofAmericaAdoptedbytheCouncilofTheAmericanSocietyofMechanicalEngineers,1914;latestedition2013.TheAmericanSocietyofMechanicalEngineersTwoParkAvenue,NewYork,NY100165990Copyright©2013byTHEAMERICANSOCIETYOFMECHANICALENGINEERSAllrightsreservedTABLEOFCONTENTSListofSections................................................................................xviForeword.....................................................................................xviiiStatementofPolicyontheUseoftheCertificationMarkandCodeAuthorizationinAdvertising............xxStatementofPolicyontheUseofASMEMarkingtoIdentifyManufacturedItems........................xxSubmittalofTechnicalInquiriestotheBoilerandPressureVesselStandardsCommittees.................xxiPersonnel.....................................................................................xxiiiSummaryofChanges...........................................................................xxxviiiListofChangesinRecordNumberOrder..........................................................xlviCross-ReferencingandStylisticChangesintheBoilerandPressureVesselCode.........................lPart1GeneralRequirements..........................................................11.1General........................................................................11.2Scope..........................................................................11.3StandardsReferencedbyThisDivision.............................................41.4UnitsofMeasurement...........................................................41.5Tolerances.....................................................................51.6TechnicalInquiries..............................................................51.7Tables.........................................................................5Annex1-A..............................................................................7Annex1-BDefinitions....................................................................8Annex1-CGuidanceForTheUseOfU.S.CustomaryAndSIUnitsInTheASMEBoilerAndPressureVesselCodes.................................................................10Part2ResponsibilitiesandDuties.....................................................162.1General........................................................................162.2UserResponsibilities............................................................162.3Manufacturer’sResponsibilities...................................................182.4TheInspector...................................................................20Annex2-AGuideForCertifyingAUser’sDesignSpecification................................21Annex2-BGuideForCertifyingAManufacturer’sDesignReport.............................23Annex2-CReportFormsandMaintenanceofRecords.......................................25Annex2-DGuideForPreparingManufacturer’sDataReports................................27Annex