【AS澳大利亚标准】AS NZS 39921998 Pressure equipment—Welding and brazing qualification.doc

This is trial version,If you want get full version,please register it,thank you.Web site:E-mail:supportThe Standard is downloaded from Standard SharingAS/NZS 3992:1998AS/NZS 3992(Incorporating Amendment No. 1)Australian/New Zealand StandardPressure equipmentWelding and brazing qualificationAccessed by UNIVERSITY OF MELBOURNE LIBRARY on 14 Jun 2008Accessed by UNIVERSITY OF MELBOURNE LIBRARY on 14 Jun 2008AS/NZS 3992:1998This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee ME/1, Pressure Equipment. It was approved on behalf of the Council of Standards Australia on 13 February 1998 and on behalf of the Council of Standards New Zealand on 16 March 1998. It was published on 5 May 1998.The following interests are represented on Committee ME/1:A.C.T. WorkCoverAustralasian Corrosion AssociationAustralasian Institute of Engineering InspectionAustralian Aluminium CouncilAustralian Building Codes BoardAustralian Chamber of Commerce and IndustryAustralian Institute of EnergyAustralian Institute of PetroleumAustralian Liquefied Petroleum Gas AssociationBoiler and Pressure Vessel Manufacturers Association of AustraliaBureau of Steel Manufacturers of AustraliaDepartment for Industrial Affairs, S.A.Department of Labour, New ZealandDepartment of Training and Industrial Relations, QldElectricity Corporation of New ZealandElectricity Supply Association of AustraliaInstitute of Metals and Materials, AustralasiaInstitution of Engineers, AustraliaInstitution of Professional Engineers, New ZealandMetal Trades Industry Association of AustraliaNational Association of Testing Authorities, AustraliaNew Zealand Engineering FederationNew Zealand Heavy Engineering Research AssociationNew Zealand Institute of WeldingNew Zealand Petrochemical Users GroupNew Zealand Timber Industry FederationVictorian WorkCover AuthorityWelding Technology Institute of AustraliaWorkCover N.S.W.Work Health Authority, N.T.Workplace Standards Authority, Tas.WorkSafe Western AustraliaKeeping Standards up-to-dateStandards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased.Detailed information about joint Australian/New Zealand Standards can be found by visiting the Standards Australia web site at .au or Standards New Zealand web site at www.standard.co.nz and looking up the relevant Standard in the on-line catalogue.Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization.We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia International or Standards New Zealand at the address shown on the back cover.This Standard was issued in draft form for comment as DR 96090.The Standard is downloaded from Standard SharingAS/NZS 3992:1998(Incorporating Amendment No. 1)Australian/New Zealand StandardPressure equipmentWelding and brazing qualificationAccessed by UNIVERSITY OF MELBOURNE LIBRARY on 14 Jun 2008Originated in Australia as AS 3992 1992. Revised and redesignated AS/NZS 3992:1998. Reissued incorporating Amendment No. 1 (April 2000).COPYRIGHT© Standards Australia/Standards New ZealandAll rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher.Jointly published by Standards Australia International Ltd, PO Box 1055, Strathfield, NSW 2135 and Standards New Zealand, Private Bag 2439, Wellington 6020ISBN 0 7337 1876 0AS/NZS 3992:1998Accessed by UNIVERSITY OF MELBOURNE LIBRARY on 14 Jun 2008PREFACEThis Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee ME/1, Pressure Equipment to supersede AS 3992 1992, Boilers and pressure vessels Welding and brazing qualification.This Standard incorporates Amendment No. 1 (April 2000). The changes required by the Amendment are indicated in the text by a marginal bar and amendment number against the clause, note, table, figure, or part thereof affected.This Standard is the result of a consensus among representative on the Joint Committee to produce it as a Joint Australian/New Zealand Standard. Consensus means general agreement by all interested parties. Consensus includes an attempt to remove all objections and implies much more than the concept of a simple majority, but not necessarily unanimity. It is consistent with this meaning that a member may be included in the Committee list and yet not be in full agreement will all clauses of this Standard.This Standard unifies and revises the requirements for the qualification of welding and brazing procedures, welding and brazing personnel, and production test plates and welds, specified in AS 1210, Pressure vessels, AS 1228, Pressure equipment Boilers and AS 4041, Pressure piping.The main changes in this revision are as follows:(a)Inclusion of Amendments 1 and 2 to AS 3992 1992.(b)Inclusion of requirements for hard facing metal overlay. (c)Publication as a Joint Australian/New Zealand Standard.(d)Clarification and revision of text to current accepted welding and brazing practice. (e)Addition of diagrams to define parent material thickness.(f)Recognition of the changing role of the Australian regulatory authorities.The objective of this Standard is to reduce misunderstanding, costs and delays in qualifying welding; avoid unnecessary duplication of testing; promote greater confidence in reciprocal acceptance of approved procedures; and improve safety.This Standard is based on AS 1210, with due allowance for practices or requirements of AS 1228 and AS 4041. Modifications have been made to utilize current appropriate requirements of ASME BPV Sec IX ASME Boiler and Pressure Vessel Code, Section IX: Qualification standard for welding, brazing procedures, welders, brazers and welding and brazing operators, ISO 9956, Specification and approval of welding procedures for metallic materials, BS EN 287, Approval testing of welders for fusion welding, Part 1: Steels, BS EN 288, Specification and approval of welding proceedings formetallic materials,Part1: GeneralrulesforfusionweldingandAS 2885, Pipelines Gas and liquid petroleum, Part 2: Welding.Requirements have been formulated with a view to maximum compatibility with recognized leading international Standards.This Standard introduced to the Pressure Equipment Standards the concept of prequalified welding procedures, i.e. procedures which have been proved by extensive use by many organizations to meet the quality requirements of the Standards readily and consistently. Such procedures are limited to materials and thicknesses which are readily welded with proved processes and consumables by qualified welders.It is not intended that the publication of this edition will invalidate welding tests that were accepted in respect of other Standards of AS/NZS 1200, Pressure equipment.Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of this Standard.3AS/NZS 3992:1998The Standard is downloaded from Standard SharingAccessed by UNIVERSITY OF MELBOURNE LIBRARY on 14 Jun 2008The terms normative and informative have been used in this Standard to define the application of the appendix to which they apply. A normative appendix is an integral part of a Standard, whereas an informative appendix is only for information and guidance.CONTENTSSECTION 1 SCOPE AND GENERALPageAccessed by UNIVERSITY OF MELBOURNE LIBRARY on 14 Jun 20081.1SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.2APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71.3REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.4DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.5OTHER PROCESSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.6OTHER MATERIALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9SECTION 2 PREQUALIFIED WELDING PROCEDURES2.1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102.2PREQUALIFIED GASES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.3ALUMINOTHERMIC WELDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113.1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133.2METHODS OF QUALIFICATION OF WELDING PROCEDURE . . . . . . . . 133.3RECORDING OF WELDING PROCEDURE DATA . . . . . . . . . . . . . . . . . 133.4TESTING OF WELDING PROCEDURE TEST WELDS . . . . . . . . . . . . . . 133.5REQUALIFICATION OF A WELDING PROCEDURE . . . . . . . . . . . . . . . 143.6PORTABILITY OF QUALIFIED WELDING PROCEDURES . . . . . . . . . . . 143.7RECIPROCITY OF QUALIFIED WELDING PROCEDURES . . . . . . . . . . . 143.8WELDING PROCEDURE SPECIFICATION. . . . . . . . . . . . . . . . . . . . . . 143.9WELDING PROCEDURES FOR REPAIR WELDING . . . . . . . . . . . . . . . . 143.10REPAIRS, REPLACEMENT OR ALTERATION TOIN-SERVICE PRESSURE EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . 15SECTION 3 QUALIFICATION OF WELDING PROCEDURES FOR BUTT, BRANCH AND FILLET WELDS4.1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164.2ITEMS SPECIFIC TO NOMINATED WELDING PROCESSES . . . . . . . . . 164.3RECORDING OF WELDING PROCEDURE TEST WELDS . . . . . . . . . . . 16SECTION 4 ITEMS TO BE RECORDED FOR WELDING PROCEDURE TEST WELDSSECTION 5 ESSENTIAL VARIABLES FOR WELDING PROCEDUREQUALIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186.1TEST PIECES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326.2VISUAL EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346.3NON-DESTRUCTIVE EXAMINATION OF TEST PIECES . . . . . . . . . . . . 346.4POSTWELD HEAT TREATMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34SECTION 6 WELD TEST PIECES5AS/NZS 3992:1998The Standard is downloaded from Standard SharingPage7.1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.2RESPONSIBILITY FOR TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.3TEST SPECIMENS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.4TRANSVERSE TENSILE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397.5ALL-WELD-METAL TENSILE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . 407.6BEND TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 407.7CHARPY V-NOTCH IMPACT TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 427.8MACRO EXAMINATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 467.9WELD JOINT HARDNESS TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 467.10FILLET BREAK TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 477.11NICK-BREAK TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 477.12ADDITIONAL TESTS BEFORE REJECTION . . . . . . . . . . . . . . . . . . . . . 477.13REPORTING OF RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48SECTION 7 MECHANICAL TESTING OF WELDS FOR PROCEDURE QUALIFICATIONSECTION 8 WELD OVERLAY QUALIFICATION TESTING8.1CLAD PLATE CONSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498.2CORROSION-RESISTANT WELD METAL OVERLAY . . . . . . . . . . . . . . 498.3HARDFACING WELD METAL OVERLAY . . . . . . . . . . . . . . . . . . . . . . . 50SECTION 9 WELDER QUALIFICATION9.1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529.2METHODS OF QUALIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529.3EXTENT OF APPROVAL OF WELDER QUALIFICATION . . . . . . . . . . . 529.4INFORMATION TO BE GIVEN TO WELDER FOR QUALIFICATIONTEST WELDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529.5EXAMINATION AND TESTING OF WELDER QUALIFICATIONTEST WELDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529.6RECORDING OF WELDER QUALIFICATION TESTS . . . . . . . . . . . . . . . 539.7RETESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 539.8RENEWAL OF WELDER QUALIFICATION . . . . . . . . . . . . . . . . . . . . . . 56Accessed by UNIVERSITY OF MELBOURNE