BuildingServicesPipingASMECodeforPressurePiping,B31ANAMERICANNATIONALSTANDARDASMEB31.9-2020(RevisionofASMEB31.9-2017)ASMEB31.9-2020(RevisionofASMEB31.9-2017)BuildingServicesPipingASMECodeforPressurePiping,B31ANAMERICANNATIONALSTANDARDTwoParkAvenue•NewYork,NY•10016USAxDateofIssuance:December31,2020ThenexteditionofthisCodeisscheduledforpublicationin2023.ThisCodewillbecomeeffective6monthsaftertheDateofIssuance.ASMEissueswrittenrepliestoinquiriesconcerninginterpretationsoftechnicalaspectsofthisCode.InterpretationsarepublishedontheCommitteewebpageandunderhttp://go.asme.org/InterpsDatabase.PeriodicallycertainactionsoftheASMEB31CommitteesmaybepublishedasCases.CasesarepublishedontheASMEwebsiteundertheB31CommitteePageathttp://go.asme.org/B31committeeastheyareissued.ErratatocodesandstandardsmaybepostedontheASMEwebsiteundertheCommitteePagesoftheassociatedcodesandstandardstoprovidecorrectionstoincorrectlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards.Sucherratashallbeusedonthedateposted.TheB31CommitteePagecanbefoundathttp://go.asme.org/B31committee.TheassociatedB31CommitteePagesforeachcodeandstandardcanbeaccessedfromthismainpage.Thereisanoptionavailabletoautomaticallyreceiveane-mailnotificationwhenerrataarepostedtoaparticularcodeorstandard.ThisoptioncanbefoundontheappropriateCommitteePageafterselecting“Errata”inthe“PublicationInformation”section.ASMEistheregisteredtrademarkofTheAmericanSocietyofMechanicalEngineers.ThiscodeorstandardwasdevelopedunderproceduresaccreditedasmeetingthecriteriaforAmericanNationalStandards.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large.ASMEdoesnot“approve,”“rate,”or“endorse”anyitem,construction,proprietarydevice,oractivity.ASMEd...
