1、Nondestructive ExaminationSECTION VASME BPVC.V-20212021ASME Boiler andPressure Vessel CodeAn International CodeMarkings such as“ASME,”“ASME Standard,”or any other marking including“ASME,”ASME logos,or the ASME Single Cerficaon Mark shall not be used on any item that is not constructed in accordance
2、with all of the applicable requirements of the Code or Standard.Use of of the ASME Single Cerficaon Mark requires formal ASME cerficaon;if no cerficaon program is available,such ASME markings may not be used.(For Cerficaon and Accreditaon Programs,see hps:/www.asme.org/cerficaon-accreditaon.)Items p
3、roduced by pares not formally possessing an ASME Cerficate may not be described,either explicitly or implicitly,as ASME cerfied or approved in any code forms or other document.VNONDESTRUCTIVEEXAMINATIONASME Boiler and Pressure Vessel Committeeon Nondestructive ExaminationAN INTERNATIONAL CODE2021 AS
4、ME Boiler&Pressure Vessel Code2021 EditionJuly 1,2021Two Park Avenue New York,NY 10016 USADate of Issuance:July 1,2021This international code or standard was developed under procedures accredited as meeting the criteria forAmerican National Standards and it is an American National Standard.The Stand
5、ards Committee that approvedthe code or standard was balanced to assure that individuals from competent and concerned interests havehad an opportunity to participate.The proposed code or standard was made available for public review and com-ment that provides an opportunity for additional public inp
6、ut from industry,academia,regulatory agencies,andthe public-at-large.ASME does not“approve,certify,“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 i
7、n this document,and does not undertake to insure anyone utilizing a standard against liabilityfor infringement of any applicable letters patent,nor assume any such liability.Users of a code or standard areexpressly advised that determination of the validity of any such patent rights,and the risk of
8、infringement of suchrights,is entirely 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 t
9、his document issued in accordance with the es-tablished ASME procedures and policies,which precludes the issuance of interpretations by individuals.The endnotes and preamble in this document(if any)are part of this American National Standard.ASME Collective Membership MarkASME Single Certification M
10、arkASME and the above ASME symbols are registered trademarks of The American Society of Mechanical Engineers.The Specifications published and copyrighted by the American Society for Testing and Materialsare reproduced with the Societys permission.No part of this document may be reproduced in any for
11、m,in an electronicretrieval system or otherwise,without the prior written permission of thepublisher.Library of Congress Catalog Card Number:56-3934Printed in the United States of AmericaAdopted by the Council of The American Society of Mechanical Engineers,1914;latest edition 2021.The American Soci
12、ety of Mechanical EngineersTwo Park Avenue,New York,NY 10016-5990Copyright 2021 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedTABLE OF CONTENTSList of Sections.xxviForeword.xxviiiStatement of Policy on the Use of the ASME Single Certification Mark and Code Authorization in Adverti
13、singxxxStatement of Policy on the Use of ASME Marking to Identify Manufactured Items.xxxSubmittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees.xxxiPersonnel.xxxivASTM Personnel.lvSummary of Changes.lviList of Changes in Record Number Order.lxCross-Referencing and Sty
14、listic Changes in the Boiler and Pressure Vessel Code.lxiSubsection ANondestructive Methods of Examination.1Article 1General Requirements.1T-110Scope.1T-120General.1T-130Equipment.2T-150Procedure.2T-160Calibration.3T-170Examinations and Inspections.3T-180Evaluation.3T-190Records/Documentation.4Manda
15、tory Appendix IGlossary of Terms for Nondestructive Examination.5I-110Scope.5I-120General Requirements.5I-130UT Ultrasonics.26Mandatory Appendix IISupplemental Personnel Qualification Requirements for NDECertification.27II-110Scope.27II-120General Requirements.27Mandatory Appendix IISupplement A.30M
16、andatory Appendix IIIExceptions and Additional Requirements for Use of ASNT SNT-TC-1A 2016 Edition.31III-110Exceptions,Modifications,and Additions.31Mandatory Appendix IVExceptions to ANSI/ASNT CP-189 2020 Edition.37IV-110Introduction.37IV-120Exceptions to ANSI/ASNT CP-189.37Nonmandatory Appendix AImperfection vs Type of NDE Method.39A-110Scope.39Article 2Radiographic Examination.41T-210Scope.41T-220General Requirements.41T-230Equipment and Materials.42iiiT-260Calibration.43T-270Examination.43T-