ASME_B31Ea-2010.pdf

ASME B31Ea-2010Addenda toASME B31E-2008Standard for the SeismicDesign and Retrofit ofAbove-Ground Piping SystemsASME Code for Pressure Piping,B31AN AMERICAN NATIONAL STANDARDA0169ACopyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:July 6,2010ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-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 anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participationbyfederalagencyrepresentative(s)orperson(s)affiliatedwithindustryisnottobeinterpretedasgovernmentor industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and 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 EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2010 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME B31Ea-2010Following approval by the ASME B31 Committee and ASME,and after public review,ASME B31Ea-2010 was approved by the American National Standards Institute on May 13,2010.SUMMARY OF CHANGESThis Addenda is published in its entirety for the users convenience.Changes given below are identified on the pages by a margin note,(a),placed next to the affectedarea.The pages not listed are the reverse sides of the listed pages and contain no changes.PageLocationChange23.1Revised3.3.1(1)Both equations revised(2)In the last paragraph,“238 MPa”revised to read“240 MPa”3Table 2Revised57(1)First paragraph revised(2)References updated(c)Copyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.INTENTIONALLY LEFT BLANK(d)Copyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B31 Committee.viIntroduction.vii1Purpose.12Materials.23Design.24Interactions.55Documentation.56Maintenance.57References.5Tables1Seismic Design Requirements,Applicable Sections.32Maximum Span,ft(m),Between Lateral Seismic Restraints for Steel Pipe Witha Yield Stress of 35 ksi(240 MPa),in Water Service at 70F(21C).3iiiCopyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.FOREWORDSeismic design of critical piping systems is often required by Building Codes or by regulation,or it may be voluntari