www bzfxw com BRITISH STANDARD BS EN 729 1 1995 Incorporating Amendment No 1 Quality requirements for welding Fusion welding of metallic materials — Part 1 Guidelines for selection and use The Europea[.]
BS EN 729-1:1995 BRITISH STANDARD `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - Incorporating Amendment No Quality requirements for welding Fusion welding of metallic materials — Part 1: Guidelines for selection and use The European Standard EN 729-1:1994 has the status of a British Standard UDC 621.792:658.562 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 BS EN 729-1:1995 Cooperating organizations `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 January 1995 © BSI 12-1998 The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standard Finland Suomen Standardisoimisliito, r.y France Association franỗaise de normalisation Germany Deutsches Institut fỹr Normung e.V Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portuguès da Qualidade Spain Asociación Espola de Normalización y Certificación Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd No Date Comments 8849 December 1995 Indicated by a sideline in the margin The following BSI references relate to the work on this standard: Committee reference WEE/-/1/6 Draft for comment 92/75856 DC ISBN 580 23131 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 BS EN 729-1:1995 Contents Cooperating organizations National foreword Page Inside front cover ii Foreword Text of EN 729-1 National annex NA (informative) Committees responsible National annex NB (informative) Cross-references Inside back cover Inside back cover `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - © BSI 12-1998 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 i BS EN 729-1:1995 National foreword This British Standard has been prepared under the direction of the Engineering Sector Board and is the English language version of EN 729-1:1994 Quality requirements for welding — Fusion welding of metallic materials — Part 1: Guidelines for selection and use, published by the European Committee for Standardization (CEN) EN 729-1 was produced as the result of international discussion in which the UK took and active part There has previously been no direct British Standard equivalent to this standard Application Standards may request the manufacturer to comply with one of the Parts of EN 729 It is assumed that the execution of the provisions of this document is entrusted to suitably qualified and experienced persons A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages to 6, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy © BSI 12-1998 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 EUROPEAN STANDARD EN 729-1 NORME EUROPÉENNE EUROPÄISCHE NORM September 1994 UDC 621.792:658.562 Descriptors: Welding, welded constructions, quality, quality assurance, selection, utilization; manufacturing, user supplier relations English version Quality requirements for welding — Fusion welding of metallic materials — Part 1: Guidelines for selection and use Exigences de qualité en soudage — Soudage par fusion des matériaux métalliques — Partie 1: Lignes directrices pour la sélection et l’utilisation Schweißtechnische Qualitiätsanforderungen — Schmelzschweißen metallischer Werkstoffe — Teil 1: Richtlinien zur Auswahl und Verwendung ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ This European Standard was approved by CEN on 1994-09-06 CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1994 Copyright reserved to CEN members Ref No EN 729-1:1994 E `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 Foreword Contents This European Standard was prepared by the Technical Committee CEN/TC 121, Welding, of which the secretariat is held by DS CEN/TC 121 has decided to submit the final draft for formal vote by its resolution 173/1993 The result was positive EN 729 is composed of the four following parts: — EN 729-1, Quality requirements for welding — Fusion welding of metallic materials — Part 1: Guidelines for selection and use; — EN 729-2, Quality requirements for welding — Fusion welding of metallic materials — Part 2: Comprehensive quality requirements; — EN 729-3, Quality requirements for welding — Fusion welding of metallic materials — Part 3: Standard quality requirements; — EN 729-4, Quality requirements for welding — Fusion welding of metallic materials — Part 4: Elementary quality requirements This European Standard has been prepared under a mandate given to CEN by the Commission of the European Communities and the European Free Trade Association, and supports essential requirements of EC Directive(s) This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 1995, and conflicting national standards shall be withdrawn at the latest by March 1995 According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom Page Foreword Introduction Scope Normative references 3 Definitions 4 Selection of welding quality requirements Annex A (informative) Flow diagram for selection of welding requirements Annex B (informative) Summary comparison of welding quality requirements with regard to EN 729-2, EN 729-3 and EN 729-4 Table — Selection of welding quality requirements Table B.1 — Summary comparison Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - EN 729-1:1994 ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ © BSI 12-1998 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 EN 729-1:1994 Welding processes are widely used to fabricate many of the constructions of the engineering industry and in some companies they are the key feature of production Such constructions may range from pressure vessels to domestic and agricultural equipment and includes items such as cranes, bridges and other welded structures As such, welding exerts a profound influence on the cost of fabrication and quality of the product It is important, therefore, to ensure that welding is carried out in the most effective way and that appropriate control is exercised over all aspects of the operation Within the EN 29000 series of standards for quality systems, welding is to be treated as a “Special Process” since welds cannot be fully verified by subsequent inspection and testing of the product to ensure that the required quality standards have been met Quality cannot be inspected into a product, it has to be built into it Even the most extensive and sophisticated non-destructive testing does not improve the quality of welds For welded constructions to be effective and free from serious problems in production and in service, it is necessary to provide controls, from the design phase, through material selection, into fabrication and subsequent inspection For example, poor design for welding may create serious and costly difficulties in the workshop, on site, or in service Incorrect material selection may result in welding problems, such as cracking Welding procedures have to be correctly formulated and approved to avoid imperfections Supervision needs to be implemented to ensure that the specified quality will be achieved To ensure effective welded fabrication, management needs to apreciate the sources of potential trouble and to introduce appropriate quality procedures The guidelines define various approaches to quality requirements for welding fabrication, both in workshops and on sites and provide guidance for describing the capability of a manufacturer to be able to produce welded constructions of the specified quality They can also be used by any interested party as a basis for assessing a manufacturer’s welding quality arrangements The guidelines are intended as a guide for the preparation of regulatory or contractual requirements and for a manufacturer’s management to define welding requirements for quality systems related to the type of welded construction The guidelines are not structured to be used in isolation as part of any regulatory, contractual or managerial requirement These guidelines are intended to be used for the following purposes: a) providing interpretation of the requirements in the EN 29000 series of standards, as a guideline for specification and establishment of the part of the quality system related to control of welding as a “Special Process”; b) providing guidelines to establish specifications and welding quality requirements, where a quality system according to EN 29001 and EN 29002 is not involved; c) assessment of the welding quality requirements mentioned in a) or b) above The application of this standard would typically occur in the following circumstances: — in contractual situations: specification of welding requirements for quality systems; — by manufacturers: establishment and maintenance of welding quality requirements; — by committees preparing structural codes or other application standards: specification of welding quality requirements; — by interested parties, e.g third parties, customers or the manufacturer’s management: assessment of welding quality requirements `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - Introduction ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ Scope These guidelines have been prepared to describe welding quality requirements suitable for application by manufacturers using welding as a means of fabrication They are structured such that they can be used for fabrication of virtually any type of fusion welded construction These guidelines relate only to those aspects of the quality of the final construction which may be influenced by welding and allied processes © BSI 12-1998 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Normative references This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 EN 729-1:1994 EN 729-2, Quality requirements for welding — Fusion welding of metallic materials — Part 2: Comprehensive quality requirements EN 729-3, Quality requirements for welding — Fusion welding of metallic materials — Part 3: Standard quality requirements EN 729-4, Quality requirements for welding — Fusion welding of metallic materials — Part 4: Elementary quality requirements EN 29000, Quality management and quality assurance standards — Guidelines for selection and use EN 29001, Quality systems — Model for quality assurance in design development, production, installation and servicing EN 29002, Quality systems — Model for quality assurance in production and installation ISO 8402:1986, Quality — Vocabulary Definitions For the purpose of this standard the following definitions apply `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - 3.1 contract a contract is: — either the agreed requirements for constructions ordered by a customer; — or the manufacturer’s basic specification for constructions manufactured in series for several of customers, unknown to the manufacturer at the time of design and production the contract is, in both cases, assumed to include reference to all relevant regulatory requirements NOTE The role of an independent body is considered to be a matter which is determined by the contracting parties and/or the application standard 3.2 special process these are processes, the results of which cannot be fully verified by subsequent inspection and testing of the product and where, for example, processing deficiencies may become apparent only after the product is in use Accordingly, continous monitoring and/or compliance with documented procedures is required to ensure that the specified requirements are met (according to 4.9.2 of EN 29001:1987 and 4.8.2 of EN 29002:1987) 3.4 qualified person a person whose competence and knowledge has been obtained by education, by training and/or relevant practical experience 3.5 construction the term “construction” is used for product, structure or any other welded item 3.6 quality system according to ISO 8402 Selection of welding quality requirements By using this standard it is possible to select the welding quality requirements, to suit the type of welded construction concerned, in accordance with the appropriate parts of EN 729: — Part 2: Comprehensive quality requirements; — Part 3: Standard quality requirements; — Part 4: Elementary quality requirements Guidance in the selection is shown in Table Annex A and Annex B give further information on the selection and content of EN 729-2, EN 729-3 and EN 729-4 Table — Selection of welding quality requirements ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ Contract welding requirements Quality requirements When quality When quality systemsa to system to EN 29001 or EN 29001 or EN 29002 is not EN 29002 is not required use required use comprehensive quality requirements EN 729-2a EN 729-2 standard quality requirements EN 729-2a EN 729-3 elementary quality requirements EN 729-2a EN 729-4 a Within the scope of EN 29001 and EN 29002 the requirements of EN 729-2 may be minimized to an appropriate level to suit the type of welded construction 3.3 manufacturing organization manufacturing organization means welding workshops and/or sites under the same technical and quality management Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy © BSI 1998 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 EN 729-1:1994 Annex A (informative) Flow diagram for selection of welding quality requirements ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - © BSI 12-1998 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 EN 729-1:1994 Annex B (informative) Summary comparison of welding quality requirements with regard to EN 729-2, EN 729-3 and EN 729-4 Table B.1 — Summary comparison Parts of EN 729 EN 729-2 (comprehensive quality requirements) EN 729-3 (standard quality requirements) EN 729-4 (elementary quality requirements) Elements Contract review Design review Full documented review Less extensive review Design for welding to be confirmed Sub-contractor Treat like a main fabricator Welder, operators Welding coordination Approved to EN 287 or EN 1418 Welding coordination personnel with appropriate technical knowledge according to EN 719, or persons with similar knowledge Sufficient and competent personnel to be available Establish that capability and information is available Shall comply to standard Not required but personal responsibility of manufacturer Inspection personnel Sufficient and competent, access for third parties, as needed Production equipment Required to prepare, cut, weld, transport, lift, together No specific requirement with safety equipment and protective cloths Equipment Has to be carried out, No specific requirements No specific requirement maintenance maintenance plan shall be adequate necessary Production plan Necessary Restricted plan necessary No requirement Welding procedure Instructions to be available to welder, see appropriate No requirement specification (WPS) part of EN 288 Welding procedure To appropriate part of EN 288, approved as application No specific requirement approval standard to contract demands Work instructions Welding procedure specification (WPS) or dedicated No requirement work instructions to be available Documentation Necessary Not specified No requirement Batch testing of Only if specified in Not specified No requirement consumables contract Storage and handling of As per supplier recommended as minimum welding consumables Storage of parent Protection required from influence by the environment; No requirement materials identification shall be maintained Post-weld heat Specification and complete Confirmation to No requirement treatment record necessary specification necessary Inspection before, As required for specified operations Responsibilities as during, after welding specified in contract Non-conformances Procedures shall be available Calibration Procedures shall be Not specified available Identification Required, when Required, when necessary Not specified appropriate Traceability Not specified Quality records Shall be available to meet the rules for product liability As required by contract Retained for five years minimum ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - © BSI 12-1998 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 BS EN 729-1:1995 National annex NA (informative) Committees responsible Associated Offices Technical Committee British Constructional Steelwork Association Ltd British Railways Board Electricity Association Institute of Quality Assurance Power Generation Contractors’ Association (BEAMA Ltd.) Railway Industry Association of Great Britian Welding Manufacturers’ Association Ltd National annex NB (informative) Cross-references Publication referred to EN 729-2:1994 EN 729-3:1994 EN 729-4:1994 `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - The United Kingdom participation in the preparation of this European Standard was entrusted by the Engineering Sector Board to Technical Committee WEE/-/1/6, upon which the following bodies were represented: Corresponding British Standard BS EN 729 Quality requirements for welding Part 2:1995 Comprehensive quality requirements Part 3:1995 Standard quality requirements Part 4:1995 Elementary quality requirements BS 5750 Quality systems Part 0: Principal concepts and applications EN 29000:19871) Section 0.1:1987 Guide to selection and use EN 29001:19871) Part 1:1987 Specification for design/development, production, installation and servicing EN 29002:19871) Part 2:1987 Specification for production and installation 1) EN 29000:1987, EN 29001:1987 and EN 29002:1987 have been superseded by EN ISO 9000:1994, EN ISO 9001:1994 and EN ISO 9002:1994 respectively which have been implemented as BS EN ISO 9000:1994, BS EN ISO 9001:1994 and BS EN ISO 9002:1994 respectively © BSI 12-1998 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy BSI Ð British Standards Institution BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: 020 8996 9000 Fax: 020 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services Tel: 020 8996 9001 Fax: 020 8996 7001 In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: 020 8996 7111 Fax: 020 8996 7048 Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: 020 8996 7002 Fax: 020 8996 7001 Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means ± electronic, photocopying, recording or otherwise ± without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained If permission is granted, the terms may include royalty payments or a licensing agreement Details and advice can be obtained from the Copyright Manager Tel: 020 8996 7070 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/08/2004 05:30:03 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 `,,,,``,`,,,,`,,,`,,`,`,``,,-`-`,,`,,`,`,,` - BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |