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2004 ASMEBOILER &PRESSUREVESSEL CODEVA N I N T E R N AT I O N A L C O D ENONDESTRUCTIVEEXAMINATION

ASME BOILER AND PRESSURE VESSEL CODEAN INTERNATIONAL CODEVNONDESTRUCTIVEEXAMINATION2004 EditionJuly 1, 2004THE AMERICAN SOCIETY OF MECHANICAL ENGINEERSNEW YORK, NEW YORKASME BOILER ANDPRESSURE VESSELCOMMITTEESUBCOMMITTEE ONNONDESTRUCTIVEEXAMINATION

Date of Issuance: July 1, 2004(Includes all Addenda dated July 2003 and earlier)This international code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards and it is an American National Standard. The Standards Committee that approved the code or standard was balancedto assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed codeor standard was made available for public review and comment that provides an opportunity for additional public input fromindustry, 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 any itemsmentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement ofany applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determinationof the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as governmentor industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASMEprocedures and policies, which precludes the issuance of interpretations by individuals.The footnotes in this document are part of this American National Standard.ASME collective membership markThe above ASME symbols are registered in the U.S. Patent Office.“ASME” is the trademark of the American Society of Mechanical Engineers.The Specifications published and copyrighted by the American Society for Testing and Materialsare reproduced with the Society’s permission.No part of this document may be reproduced in any form, in an electronic retrieval system orotherwise, without the prior written permission of the publisher.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.Revised 1940, 1941, 1943, 1946, 1949, 1952, 1953, 1956, 1959, 1962, 1965, 1968, 1971, 1974, 1977, 1980, 1983, 1986,1989, 1992, 1995, 1998, 2001, 2004The American Society of Mechanical EngineersThree Park Avenue, New York, NY 10016-5990Copyright 2004 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll Rights Reserved

2004 ASMEBOILER AND PRESSURE VESSEL CODESECTIONSIRules for Construction of Power BoilersIIMaterialsPart A — Ferrous Material SpecificationsPart B — Nonferrous Material SpecificationsPart C — Specifications for Welding Rods, Electrodes, and Filler MetalsPart D — Properties (Customary)Part D — Properties (Metric)IIISubsection NCA — General Requirements for Division 1 and Division 2IIIDivision 1Subsection NB — Class 1 ComponentsSubsection NC — Class 2 ComponentsSubsection ND — Class 3 ComponentsSubsection NE — Class MC ComponentsSubsection NF — SupportsSubsection NG — Core Support StructuresSubsection NH — Class 1 Components in Elevated Temperature ServiceAppendicesIIIDivision 2 — Code for Concrete ContainmentsIIIDivision 3 — Containments for Transport and Storage of Spent Nuclear Fuel andHigh Level Radioactive Material and WasteIVRules 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 VesselsDivision 1Division 2 — Alternative RulesDivision 3 — Alternative Rules for Construction of High Pressure VesselsIXWelding and Brazing QualificationsXFiber-Reinforced Plastic Pressure VesselsXIRules for Inservice Inspection of Nuclear Power Plant ComponentsXIIRules for Construction and Continued Service of Transport Tanksiii04

Beginning with the 2004 Edition, Interpretations of theCode will be distributed annually in July with the issuanceof the edition and subsequent addenda. Interpretationspreviously distributed in January will be posted in Januaryat www.cstools.asme.org/interpretations and included inthe July distribution.ADDENDAColored-sheet Addenda, which include additions andrevisions to individual Sections of the Code, are publishedannually and will be sent automatically to purchasers ofthe applicable Sections up to the publication of the 2007Code. The 2004 Code is available only in the loose-leafformat; accordingly, the Addenda will be issued in theloose-leaf, replacement-page format.CODE CASESThe Boiler and Pressure Vessel Committee meets regularly to consider proposed additions and revisions to theCode and to formulate Cases to clarify the intent ofexisting requirements or provide, when the need is urgent,rules for materials or constructions not covered byexisting Code rules. Those Cases which have beenadopted will appear in the appropriate 2004 Code Casesbook: (1) Boilers and Pressure Vessels and (2) NuclearComponents. Supplements will be sent automatically tothe purchasers of the Code Cases books up to the publication of the 2007 Code.INTERPRETATIONSASME issues written replies to inquiries concerninginterpretation of technical aspects of the Code. The Interpretations for each individual Section will be publishedseparately and will be included as part of the updateservice to that Section. They will be issued semiannually(July and December) up to the publication of the 2004Code. Interpretations of Section III, Divisions 1 and 2,will be included with the update service to SubsectionNCA.iv

SUMMARY OF CHANGESAddenda to the 2004 Edition of the Code are issued in the form of replacement pages. Revisions, additions, ordeletions are incorporated directly into the affected pages. It is advisable, however, that all replaced pages beretained for reference.Replace or insert the pages listed. Changes given below are identified on the pages by a margin note, A05,placed next to the affected area. Revisions to the 2004 Edition are indicated by 04. For the listing below, thePage references the affected area. A margin note, A05, placed next to the heading indicates Location. Revisionsare listed under Change.A detailed summary of each change contained in this Addenda is available for review and download on theASME website at the following URL:http://cstools.asme.org/summaryofchangesEach entry in the listings below contains a file number (BC number), which can be used to locate the correspondingchange within the detailed summary.PageLocationChange (BC Number)vi–xi.1ContentsUpdated where indicated by A05xxi–xxx.1RosterUpdated to reflect A057T-221.2Revised (04-1468)9T-234Revised (04-1468)10T-274.1Second paragraph corrected by errata to read determinedat (04-1671)23IV-220First paragraph revised (04-1469)25V-230(1) Subparagraph (a) revised (03-1548)(2) In subparagraph (b), cathode ray tube and displaysystem deleted (03-1469)33.1, 33.2Appendix VIIIAdded to Article 2 (03-1548)45Fig. D-210-8Cross-reference revised (04-1571)50Fig. T-434.2.1(1) General Notes (d) through (f) redesignated as (e)through (g) and new General Note (d) added (04-747)(2) Double-asterisk note redesignated as Note (1)53T-463.1.3First paragraph revised (03-1546)74–76Appendix FDeleted from Article 4 (04-634)84–84.3Appendix MAdded to Article 4 (03-1546)95T-621.2Revised (04-453)98, 99T-676.4Revised in its entirety (04-625)105T-721.2Revised (04-745)113T-777.2Revised in its entirety (04-784)119–122Appendix IIIRedesignated as Article 16 (04-464)141.1–141.4Appendix VIAdded to Article 8 (02-2553)(c)

PageLocationChange (BC Number)234–234.3Article 16(1) Article 7, Appendix III redesignated as Article 16(04-464)(2) T-1623.2 (formerly III-723.2) revised (04-464)571, 572Mandatory AppendixIRevised in its entirety (03-615)NOTE: Volume 55 of the Interpretations to Section V of the ASME Boiler and Pressure Vessel Code followsthe last page of this Addenda.(d)

SUMMARY OF CHANGESAddenda to the 2004 Edition of the Code are issued in the form of replacement pages. Revisions, additions, ordeletions are incorporated directly into the affected pages. It is advisable, however, that all replaced pages beretained for reference.Replace or insert the pages listed. Changes given below are identified on the pages by a margin note, A06,placed next to the affected area. Revisions to the 2004 Edition are indicated by 04 and revisions in the 2005Addenda are indicated by A05. For the listing below, the Page references the affected area. A margin note, A06,placed next to the heading indicates Location. Revisions are listed under Change.A detailed summary of each change contained in this Addenda is available for review and download on theASME website at the following URL:http://cstools.asme.org/summaryofchangesEach entry in the listings below contains a file number (BC number), which can be used to locate the correspondingchange within the detailed summary.PageLocationChange (BC Number)vi–xivContentsUpdated where indicated by A06xv–xviiiForewordLast four paragraphs deleted (05-366)xxi–xxx.1RosterUpdated to reflect A0610T-274.1(1) Nomenclature for F revised (05-302)(2) Nomenclature for D revised (05-302)(3) Note revised (05-302)15T-283.2Commas deleted from second and third sentences(04-1672)25, 26V-230(1) In subparagraph (a), radiograph deleted and recordingmedia added (05-1060)(2) In subparagraph (b), definition for radiograph added;and definition of radiographic examination revised(05-1060)36Fig. A-210-2Exposure arrangement — F sketch revised (05-1062)45Fig. D-210-5Corrected by errata (05-2)Fig. D-210-6Corrected by errata (05-2)47T-434.1.1Revised (05-367)51T-461Revised (05-677)55T-464.1.3Deleted (05-367)T-464.1.4Redesignated as T-464.1.3 and revised (05-367)58T-492(s)Revised (05-1070)59.1–59.6Appendix IIIAdded to Article 4 (03-1545)Appendix IVAdded to Article 4 (05-1093)62Fig. B-461.2Title revised (05-274)84.4–84.22Appendix NAdded to Article 4 (04-824)86T-561Revised (05-677)(c)