AN INTERNATIONAL CODE 202l ASME Boiler & Pressure eVesselCode 2021EditionJuly 1, 2021
V NONDESTRUCTIVE EXAMINATION on Nondestructive Examination ASME Boiler and PressureVessel Committee
Mechanical Engineers The American Society of Two ParkAvenueNew York,NY10016USA
Date of Issuance: July 1, 2021 This international code or standard was developed under procedures accredited as meeting the criteria for padde e aau spueps eps euoenueay ue pe spepues euon ueay the code or standard was balanced to assure that individuals from petent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and - pe ue onlau eee nsnpu uo ndu nd eeo uoddoue sapud e u the 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 any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. se paaudau aq o ou s nsnpu um paee (s)uosad ao [s]aapenuasaudau uale qeapaj Aq uogedae government or industry endorsement of this code or standard. ASME accepts responsibility for only those interpretations of this 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.
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ASME Collective Membership Mark
IM ASME Single Certification Mark
ASME° and the above ASME symbols are registered trademarks of The American Society of Mechanical Engineers. slee pee Bugsa, og fapos ueuuy au Aq puaidoo pue paqstqnd suogegoads aL are reproduced with the Society's permission. opp ue u uoy fue u paonpoada aq feu uaumoop s go ued on retrieval system or otherwrise, without the prior written permission of the publisher. Printed in the United States of America Library of Congress Catalog Card Number: 56-3934 Adopted by the Council of The American Society of Mechanical Engineers, 1914; latest edition 2021. The Armerican Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Copyright @ 2021 by All rights reserved
TABLEOFCONTENTS
List of Sections xxvi Foreword xxvil Statement of Policy on the Use of the ASME Single Certification Mark and Code Authorization in Advertising xx Statement of Policy on the Use of ASME Marking to Identify Manufactured Items XXX Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees xxd Personnel xxxiv ASTM Personnel Iv Summary of Changes lvi List of Changes in Record Number Order1x Cross-Referencing and Stylistic Changes in the Boiler and Pressure Vessel Code lxi Subsection A Nondestructive Methods of Examination1 Article 1 General Requirements1 T-110 Scope1 T-120 General1 T-130 Equipment T-150 Procedure2 T-160 Calibration3 T-170 Examinations and Inspections3 T-180 Evaluation3 T-190 Records/Documentation4 Mandatory Appendix 1 Glossary of Terms for Nondestructive Examination5 -110Scope5 I-120 General Requirements5 I-130 UT - UItrasonics26 Mandatory Appendix I1 Supplemental Personnel Qualification Requirements for NDE Certification27 II-110 Scope27 II-120 General Requirements27 Mandatory Appendix I1 Supplement A30 Mandatory Appendix II Exceptions and Additional Requirements for Use of ASNT SNT- TC-1A 2016 Edition31 III-110 Exceptions, Modifications, and Additions31 Mandatory Appendix IV Exceptions to ANS1/ASNT CP-189 2020 Edition37 IV-110 Introduction37 IV-120 Exceptions to ANSI/ASNT CP-18937 Nonmandatory Appendix A Imperfection vs Type of NDE Method68 A-11039 Article 2 Radiographic Examination41 T-210 Scope41 T-220 General Requirements41 T-230 Equipment and Materials42
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T-260 Calibration43 T-270 Examination43 T-280 Evaluation48 T-290 Documentation49 Mandatory Appendix 1 In-Motion Radiography50 I-210 Scope ..50 I-220 General Requirements -....-...50 I-260 Calibration50 1-270Examination50 Mandatory Appendix II Real-Time Radioscopic Examination ...52 II-210 Scope ...52 II-220 General Requirements 52 II-230 Equipment and Materials52 II-260 Calibration52 II-270 Examination53 II-280 Evaluation53 II-290 Documentation53 Mandatory Appendix III and Radioscopy54 III-210 Scope54 III-220 General Requirements54 III-230 Equipment and Materials54 III-250 Image Acquisition and Storage54 III-260 Calibration54 III-280 Evaluation54 III-290 Documentation55 Mandatory Appendix IV Interpretation, Evaluation, and Disposition of Radiographic and Radioscopic Examination Test Results Produced by the Digital Im...
AN INTERNATIONAL CODE 202l ASME Boiler & PressureVesselCode 2021EditionJuly 1, 2021
VIlI RULESFORCONSTRUCTION OFPRESSUREVESSELS
Division 1
on Pressure Vessels ASME Boiler and PressureVessel Committee
Mechanical Engineers The American Society of Two ParkAvenueNew York,NY10016USA
Date of Issuance: July 1, 2021 This international code or standard was developed under procedures accredited as meeting the criteria for padde e aau spueps eps euoenueay ue pe spepues euon ueay the code or standard was balanced to assure that individuals from petent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and - ment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the 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 any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. se paaudau aq oou s nsnpu um paee (s)uosad o [s]apeuasaudau uale eapa q uopede government or industry endorsement of this code or standard. ASME accepts responsibility for only those interpretations of this 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 Mark
IM ASME Single Certification Mark
ASME" and the above ASME symbols are registered trademarks of The American Society af Mechanical Engineers.
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. Library of Congress Catalog Card Number: 56-3934 Printed in the United States of America Adopted by the Council of The American Society of Mechanical Engineers, 1914; latest edition 2021. The American Society of Mechanical Engineers Two Park Avenue, New York, NY 10016-5990
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS Copyright @ 2021 by All rights reserved
TABLEOFCONTENTS
List of Sections xi Foreword XXXV Statement of Policy on the Use of the ASME Single Certification Mark and Code Authorization in Advertising xxxvii Statement of Policy on the Use of ASME Marking to Identify Manufactured Items xxxvii Submittal of Technical Inquiries to the Boiler and Pressure Vessel Standards Committees xxvin Personnel xli Summary of Changes lxil List of Changes in Record Number Order lxix Cross-Referencing and Stylistic Changes in the Boiler and Pressure Vessel Code lxx Introduction1 U-1 Scope1 U-2 General3 U-3 Standards Referenced by This Division4 U-4 Units of Measurement4 U-5 Tolerances5 Subsection A General Requirements8 Part UG General Requirements for All Methods of Construction and All Materials8 UG-1 Scope -8
Materials8 UG-4 General8 UG-5 Plate9 UG-6 Forgings9 UG-7 Castings9 UG-8 Pipe and Tubes9 UG-9 Welding Materials10 UG-10 Material Identified With or Produced to a Specification Not Per- mitted by This Division, and Material Not Fully ldentified10 UG-11 Prefabricated or Preformed Pressure Parts Furmished Without a Certification Mark11 UG-12 Bolts and Studs13 UG-13 Nuts and Washers14 UG-14 sueg pue spoy14 UG-15 Product Specifiation14
Design15 UG-16 General15 UG-17 Methods of Fabrication in Combination-..15 UG-18 Materials in Combination16 UG-19 Special Constructions16 UG-20 Design Temperature16 UG-21 Design Pressure17 UG-22 Loadings17 UG-23 Maximum Allowable Stress Values17 UG-24 Castings19 UG-25 Corrosion20 UG-26 Linings20 UG-27 Thickness of Shells Under Internal Pressure20 UG-28 Thickness of Shells and Tubes Under Extermal Pressure21
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UG-29 Stiffening Rings for Cylindrical Shells Under External Pressure25 UG-30 Attachment of Stiffening Rings.............26 UG-31 Tubes, and Pipe When Used as Tubes or Shells30 UG-32 Formed Heads, and Sections, Pressure on Concave Side30 UG-33 Formed Heads, Pressure on Convex Side31 UG-34 Unstayed Flat Heads and Covers34 UG-35 Other Types of Closures88
Openings and Reinforcements39 UG-36 Openings in Pressure Vessels39 UG-37 Reinforcement Required for Openings in Shells and Formed Heads 42 UG-38 Flued Openings in Shells and Formed Heads46 UG-39 Reinforcement Required for Openings in Flat Heads and Covers46 UG-40 Limits of Reinforcement48 UG-41 Strength of Reinforcement51 UG-42 Reinforcement of Multiple Openings51 UG-43 Methods of Attachment of Pipe and Nozzle Necks to Vessel Walls53 UG-44 Flanges and...