1、AN AMERICAN NATIO NAL STANDARDASME B31G-2009(Revision of ASME B31G-1991)Supplement to ASME B31 Code for Pressure PipingManual for Determining the Remaining Strength of Corroded PipelinesCopyright 2009 by the American Society of Mechanical Engineers.No reproduction may be made of this material withou
2、t 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 B31G-2009(Revision of ASME B31G-1991)Manual forDetermining
3、 theRemaining Strength ofCorroded PipelinesSupplement to ASME B31 Code forPressure PipingAN AMERICAN NATIONAL STANDARDCopyright 2009 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
4、 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:October 30,2009The next edition of this Manual is scheduled for publication in 2012.There will be no addendaissued
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12、ll rights reservedPrinted in U.S.A.Copyright 2009 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 Universit
13、y User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B31 Committee.vi1Introduction.12Evaluation Methods.53Tables of Allowable Length of Corrosion.6Figures1.12-1Corrosion Pit Interaction Distances.71.13-1Hel
14、ically Oriented Corrosion Pattern.72.1-1Corrosion Parameters Used in Analysis.8Tables3-1Values of L for Pipe Sizes NPS 2 and NPS 6.93-1MValues of L for Pipe Sizes 60 mm and 168 mm O.D.93-2Values of L for Pipe Sizes NPS 6 and NPS 10.103-2MValues of L for Pipe Sizes 168 mm and 273 mm O.D.113-3Values o
15、f L for Pipe Sizes NPS 10 and NPS 16.123-3MValues of L for Pipe Sizes 273 mm and 406 mm O.D.133-4Values of L for Pipe Sizes NPS 16 and NPS 20.143-4MValues of L for Pipe Sizes 406 mm and 508 mm O.D.153-5Values of L for Pipe Sizes NPS 20 and NPS 24.163-5MValues of L for Pipe Sizes 508 mm and 610 mm O.
16、D.173-6Values of L for Pipe Sizes NPS 24 and NPS 30.183-6MValues of L for Pipe Sizes 610 mm and 762 mm O.D.193-7Values of L for Pipe Sizes NPS 30 and NPS 36.203-7MValues of L for Pipe Sizes 762 mm and 914 mm O.D.213-8Values of L for Pipe Sizes NPS 36 and NPS 42.223-8MValues of L for Pipe Sizes 914 mm and 1 066 mm O.D.233-9Values of L for Pipe Sizes NPS 42 and NPS 48.243-9MValues of L for Pipe Sizes 1 066 mm and 1 219 mm O.D.273-10Values of L for Pipe Sizes NPS 48 and NPS 52.303-10MValues of L fo
