1、Summary of Significant Changes in the2021 ASME Boiler and Pressure Vessel CodeASME BPVC.SSC.X.II.V-2021Section XSection IISection VASME BPVC.SSC.X.II.V-2021Summary ofSignificant Changesin the 2021 ASMEBoiler and PressureVessel CodeSections X,II,and VTwo Park Avenue New York,NY 10016 USAxDate of Issu
2、ance:April 23,2021ASME does not issue written replies to inquiries concerning this publication.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 P
3、ark Avenue,New York,NY 10016-5990Copyright 2021 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.CONTENTSList of Sections in the ASME Boiler and Pressure Vessel Code.ivForeword.vAcknowledgments.viSECTION X.1Introduction.1Significant Changes.2SECTION II.4Introduction.
4、4Part A.5Part B.9Part DCustomary and Metric.12SECTION V.16Introduction.16Significant Changes.17iiiLIST OF SECTIONSIN THE ASME BOILER AND PRESSURE VESSEL CODEIRules for Construction of Power BoilersIIMaterials Part A Ferrous Material Specifications Part B Nonferrous Material Specifications Part C Spe
5、cifications for Welding Rods,Electrodes,and Filler Metals Part D Properties(Customary)Part D Properties(Metric)IIIRules for Construction of Nuclear Facility Components Subsection NCA General Requirements for Division 1 and Division 2 Appendices Division 1 Subsection NB Class 1 Components Subsection
6、NCD Class 2 and Class 3 Components Subsection NE Class MC Components Subsection NF Supports Subsection NG Core Support Structures Division 2 Code for Concrete Containments Division 3 Containment Systems for Transportation and Storage of Spent Nuclear Fuel and High-LevelRadioactive Material Division
7、5 High Temperature ReactorsIVRules for Construction of Heating BoilersVNondestructive ExaminationVIRecommended Rules for the Care and Operation of Heating BoilersVIIRecommended Guidelines for the Care of Power BoilersVIIIRules for Construction of Pressure Vessels Division 1 Division 2 Alternative Ru
8、les Division 3 Alternative Rules for Construction of High Pressure VesselsIXWelding,Brazing,and Fusing QualificationsXFiber-Reinforced Plastic Pressure VesselsXIRules for Inservice Inspection of Nuclear Power Plant Components Division 1 Rules for Inspection and Testing of Components of Light-Water-C
9、ooled Plants Division 2 Requirements for Reliability and Integrity Management(RIM)Programs for Nuclear PowerPlantsXIIRules for Construction and Continued Service of Transport TanksXIIIRules for Overpressure ProtectionivFOREWORDThisbookisacompaniontothe2021ASMEBoilerandPressureVesselCode(BPVC).Itexpl
10、ainsonlysignificantchangesto Code requirements that have been approved since 2019 and that will be published in the 2021 Edition.It covers thefollowing ASME BPVC Sections:Section X Section II,Parts A,B,and D Section VForeachoftheaboveSections,anIntroductiondescribesthehistoricalbackground,scopeofcov
11、erage,andcommercialapplication of that Section by industry and government organizations.The list of changes follows the Introduction.The“Explanation”for each change provides the reason for the action and the value to the Code user.The sequence of thechanges follows the order of the Code requirements
12、.vACKNOWLEDGMENTSThis book is the work of the following ASME Standards and Certification(S&C)staff:Paul D.Stumpf,S&C Project Engineering Advisor,Section X Colleen E.Rodrigues,S&C Project Engineering Manager,Section II,Parts A,B,and D Carlton R.Ramcharran,S&C Project Engineering Advisor,Section VASME
13、PresssOnlineCompanionGuidetotheASMEBoilerandPressureVesselCodes:CriteriaandCommentaryonSelectAspects of the Boiler&Pressure Vessel and Piping Codes(January 2020)provided source material for the Introductionpreceding each list of changes.The complete Guide is available in the ASME Digital Collection
14、athttps:/asmedigitalcollection.asme.org/ebooks/pages/onlinecompanionguide.ASME gratefully acknowledges the members of the following volunteer committees,who are responsible for devel-opment of the ASME Boiler and Pressure Vessel Code Sections noted in this book:BPV Committee on Fiber-Reinforced Plas
15、tic Pressure Vessels(X)BPV Committee on Materials(II)BPV Committee on Nondestructive Examination(V)viSECTION XIntroductionSection X is part of the ASME Boiler and Pressure Vessel Code(BPVC)and has been adopted by regulation in 37jurisdictions of the United States and in the provinces of Canada.The s
16、cope of this Code covers pressure vesselsconstructed of thermosetting resin(e.g.,epoxy,vinyl ester,polyester,furan,and phenolic)reinforced with glassfibers as well as pressure vessels reinforced with carbon or aramid fibers.The pressure range covered by SectionX is 15 psig to 15,000 psig internal pressure,of which the upper limit depends on the size and construction of thevessel.In addition,Section X covers pressure vessels with external pressure from 0 psig to 15 psig.The processes used to manu
