ASME_B31.8S-2020.pdf

Managing System Integrity of Gas PipelinesASME Code for Pressure Piping,B31 Supplement to ASME B31.8AN INTE R NAT IO NAL PIPING CO D EASME B31.8S-2020(Revision of ASME B31.8S-2018)ASME B31.8S-2020(Revision of ASME B31.8S-2018)ManagingSystem Integrityof Gas PipelinesxASME Code for Pressure Piping,B31Supplement to ASME B31.8AN INTERNATIONAL PIPING CODETwo Park Avenue New York,NY 10016 USAxDate of Issuance:June 21,2021The next edition of this Code is scheduled for publication in 2022.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Code.Interpretations arepublished on the Committee web page and under http:/go.asme.org/Interpretations.Periodically certain actions of theASME B31 Committee may be published as Cases.Cases are published on the ASME website under the B31 CommitteePage at http:/go.asme.org/B31committee as they are issued.Errata to codes and standards may be posted on the ASME website under the Committee Pages of the associated codes andstandardstoprovidecorrectionstoincorrectlypublisheditems,ortocorrecttypographicalorgrammaticalerrorsincodesandstandards.Such errata shall be used on the date posted.The B31 Committee Page can be found at http:/go.asme.org/B31committee.The associated B31 Committee Pages for eachcode and standard can be accessed from this main page.There is an option available to automatically receive an e-mailnotification when errata are posted to a particular code or standard.This option can be found on the appropriate CommitteePage after selecting“Errata”in the“Publication Information”section.ASME is the registered trademark of The American Society of Mechanical Engineers.This international code or standard was developed under procedures accredited as meeting the criteria for American National StandardsanditisanAmericanNationalStandard.TheStandardsCommitteethatapprovedthecodeorstandardwasbalancedtoassurethatindividualsfromcompetentandconcernedinterestshavehadanopportunitytoparticipate.Theproposedcodeorstandardwasmadeavailableforpublicreviewandcommentthatprovidesanopportunityforadditionalpublicinputfromindustry,academia,regulatoryagencies,andthepublic-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with any items mentioned in thisdocument,anddoesnotundertaketoinsureanyoneutilizingastandardagainstliabilityforinfringementofanyapplicableletterspatent,norassumeanysuchliability.Usersofacodeorstandardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrights,andtherisk of infringement of such rights,is entirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted as government or industryendorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME proceduresand policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2021 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSForeword.vCommittee Roster.viCorrespondence With the B31 Committee.ixSummary of Changes.xi1Introduction.12Integrity Management Program Overview.23Consequences.74Gathering,Reviewing,and Integrating Data.95Risk Assessment.126Integrity Assessment.177Responses to Integrity Assessments and Mitigation(Repair and Prevention).218Integrity Management Plan.289Performance Plan.2910Communications Plan.3411Management of Change Plan.3412Quality Control Plan.3513Terms,Definitions,and Acronyms.3614References and Standards.42Nonmandatory AppendicesAThreat Process Charts and Prescriptive Integrity Management Plans.45BDirect Assessment Process.63CPreparation of Technical Inquiries.64Figures2.1-1Integrity Management Program Elements.32.1-2Integrity Management Plan Process Flow Diagram.43.2.4-1Potential Impact Area.97.2.1-1Timing for Scheduled Responses:Time-Dependent Threats,Prescriptive Integrity ManagementPlan.2613-1Hierarchy of Terminology for Integrity Assessment.36A-2.1-1Integrity Management Plan,External Corrosion Threat(Simplified Process:Prescriptive).46A-3.1-1Integrity Management Plan,Internal Corrosion Threat(Simplified Process:Prescriptive).48A-5.1-1Integrity Management Plan,Manufacturing Threat(Pipe Seam and Pipe;Simplified Process:Prescriptive).52A-6.1-1IntegrityManagementPlan,ConstructionThreat(PipeGirthWeld,FabricationWeld,WrinkleBendor Buckle,Stripped Threads/Broken Pipe/Coupling;Simplified Process:Prescriptive).54A-7.1-1Integrity Management Plan,Equipment Threat(Gasket and O-Ring,Control/Relief,Seal/PumpPacking;Simplified Process:Prescr