31-1_Edtn_2007.pdf

Power Piping ASME Code for Pressure Piping,B31AN AMERICAN NATIO NAL STANDARDASME B31.1-2007(Revision of ASME B31.1-2004)Copyright 2007 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 B31.1-2007(Revision of ASME B31.1-2004)Power PipingASME Code for Pressure Piping,B31AN AMERICAN NATIONAL STANDARDThree Park Avenue New York,NY 10016Copyright 2007 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:December 7,2007The2007 editionofthis Codeisbeingissued withanautomatic updateservicethat includesaddenda,interpretations,and cases.The use of addenda allows revisions made in response to public reviewcomments or committee actions to be published on a regular basis;revisions published in addendawill become effective 6 months after the Date of Issuance of the addenda.The next edition of thisCode is scheduled for publication in 2010.ASME 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.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or 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 2007 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2007 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.viCommittee Roster.viiIntroduction.xSummary of Changes.xiiChapter IScope and Definitions.1100General.1Chapter IIDesign.10Part 1Conditions and Criteria.10101Design Conditions.10102Design Criteria.11Part 2Pressure Design of Piping Components.16103Criteria for Pressure Design of Piping Components.16104Pressure Design of Components.16Part 3Selection and Limitations of Piping Components.29105Pipe.29106Fittings,Bends,and Intersections.30107Valves.31108Pipe Flanges,Blanks,Flange Facings,Gaskets,and Bolting.32Part 4Selection and Limitations of Piping Joints.33110Piping Joints.33111Welded Joints.33112Flanged Joints.33113Expanded or Rolled Joints.33114Threaded Joints.33115Flared,Flareless,and Compression Joints,and Unions.38116Bell End Joints.39117Brazed and Soldered Joints.39118Sleeve Coupled and Other Proprietary Joints.39Part 5Expansion,Flexibility,and Pipe Supporting Element.39119Expansion and Flexibility.39120Loads on Pipe Supporting Elements.42121Design of Pipe Supporting Elements.43Part 6Systems.46122Design Requirements Pertaining to Specific Piping Systems.46Chapter IIIMaterials.61123General Requirements.61124Limitations on Materials.62125Materials Applied to Miscellaneous Parts.63Chapter IVDimensional Requirements.64126Material Specifications and Standards for Standard and NonstandardPiping Components.64C