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1、BRITISH STANDARD BS EN 288-6: 1995 Specification and approval of welding procedures for metallic materials Part 6: Approval related to previous experience The European Standard EN 288-6:1994 has the status of a British Standard UDC 621.791.55:669:658.562 BS EN 288-6:1995 This British Standard, havin
2、g been prepared under the direction of the Engineering Sector Board, was published underthe authority of the Standards Board and comes into effect on 15 February 1995 BSI 12-1998 The following BSI references relate to the work on this standard: Committee reference WEE/36 Draft for comment 92/82571 D
3、C ISBN 0 580 23695 1 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de
4、normalisation DenmarkDansk Standard FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland
5、ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen
6、 i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments BS EN 288-6:1995 BSI 12-1998i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 288-63 Natio
7、nal annex NA (informative) Committees responsibleInside back cover National annex NB (informative) Cross-referencesInside back cover BS EN 288-6:1995 ii BSI 12-1998 National foreword This British Standard has been prepared under the direction of the Engineering Sector Board and is the English langua
8、ge version of EN 288 Specification and approval of welding procedures for metallic materials Part 6. Approval related to previous experience, published by the European Committee for Standardization (CEN). EN 288-6 was produced as a result of international discussions in which the United Kingdom took
9、 an active part. There has previously been no direct British Standard equivalent to this standard. 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 provisio
10、ns 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,
11、pages 2 to 4, 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. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 288-6 August 1994 UDC621.79
12、1.55:669:658.562 Descriptors: Welding, arc welding, procedure, qualification English version Specification and approval of welding procedures for metallic materials Part 6: Approval related to previous experience Descriptif et qualification dun mode opratoire de soudage pour les matriaux mtalliques
13、Partie 6: Qualification par rfrence lexprience acquise Anforderung und Anerkennung von Schweiverfahren fr metallische Werkstoffe Teil 6: Anerkennung aufgrund vorliegender Erfahrung This European Standard was approved by CEN on 1994-08-17. CEN members are bound to comply with the CEN/CENELEC Internal
14、 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. T
15、his 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
16、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 Comit Europen de Normalisation Europisches Komit
17、ee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 288-6:1994 E EN 288-6:1994 BSI 12-1998 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 121, Welding, the secretariat of which is held by DS.
18、 The Technical Committee CEN/TC 121 has decided to submit the final draft to the formal vote. The result was positive. This standard consists of the following parts: Part 1: General rules for fusion welding; Part 2: Welding procedure specification for arc welding; Part 3: Welding procedure tests for
19、 the arc welding of steels; Part 4: Welding procedure tests for the arc welding of aluminium and its alloys; Part 5: Approval by using approved welding consumables for arc welding; Part 6: Approval related to previous experience; Part 7: Approval by a standard welding procedure for arc welding; Part
20、 8: Approval by a pre-production welding test. 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 February 1995, and conflicting national standards shall be withdrawn at the latest by February 1995.
21、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. Co
22、ntents Page Foreword2 0Introduction3 1Scope3 2Normative references3 3Definitions3 4Preliminary welding procedure specifications (pWPS)3 5Approval of the welding procedure3 6Demonstration of existing previous experience4 7Range of approval4 8Validity4 9Documentation4 EN 288-6:1994 BSI 12-19983 0 Intr
23、oduction In EN 288-1, one of the methods of welding procedure approval is by relating to previous experience. Many manufacturers have considerable experience in fabricating welded structures. Welded components and structures may have been supplied to end users/clients for a variety of applications a
24、nd have performed satisfactorily over a period of time in service. If this experience is traceable and documented this standard provides a route to welding procedure approval based on this experience. 1 Scope This standard simplifies the conditions for approval of a welding procedure based on previo
25、us experience according to EN 288-1. In addition it gives the range of approval and the validity. This standard applies to fusion welding of metallic materials. The process numbers refer to EN 24063. Essentially this standard covers the following processes: Other welding processes may be accepted by
26、 agreement when sufficient experience is available. The use of this standard may be restricted by an application standard or at the enquiry/order stage by the contracting parties. 2 Normative references This European standard incorporates by dated or undated reference, provisions from other publicat
27、ions. 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.
28、For undated references the latest edition of the publication referred to applies. EN 288-1, Specification and approval of welding procedures for metallic materials Part 1: General rules for fusion welding. EN 288-2, Specification and approval of welding procedures for metallic materials Part 2: Weld
29、ing procedure specification for arc welding. EN 288-3, Specification and approval of welding procedures for metallic materials Part 3: Welding procedure tests for the arc welding of steels. EN 288-4, Specification and approval of welding procedures for metallic materials Part 4: Welding procedure te
30、sts for the arc welding of aluminium and its alloys. EN 24063, Welding, brazing, soldering and braze welding of metals. Nomenclature of processes and reference numbers for symbolic representation on drawing. 3 Definitions For the purpose of this standard, the definitions listed in EN 288-1 shall app
31、ly. 4 Preliminary welding procedure specifications (pWPS) The approval of a welding procedure based on previous experience shall be based on a pWPS according to EN 288-2. It shall specify the range for all the relevant parameters. 5 Approval of the welding procedure The approval of the welding proce
32、dure shall be carried out by an examiner or test body according to EN 288-1. The essential items for the approval are: pWPS according to EN 288-2; documentation of the existing previous experience (see clause 6). 111:Metal arc welding with covered electrode 114:Flux cored metal-arc welding without g
33、as shield 121:Submerged arc welding with wire electrode 122:Submerged arc welding with strip electrode 131:Metal-arc inert gas welding; MIG-welding 135:Metal-arc active gas welding; MAG-welding 136:Flux cored wire metal-arc welding with active gas shield 137:Flux cored wire metal-arc welding with in
34、ert gas shield 141:Tungsten inert-gas arc welding; TIG-welding 15:Plasma arc welding EN 288-6:1994 4 BSI 12-1998 6 Demonstration of existing previous experience Previous experience shall be demonstrated by documented examination and/or test data and either a summary of welding manufacturing or satis
35、factory service performance. This shall involve: a) satisfactory documentation of tests (e.g. non-destructive, destructive, leak or pressure tests) in all cases; AND b) a summary of welding manufacturing of at least one year during an appropriate period; OR c) suitability of welds in service for an
36、appropriate period. A period of five years is considered as an appropriate period unless otherwise specified in the application standard or by agreement between contracting parties. 7 Range of approval The range of approval given to a welding procedure approved in accordance with this part of this s
37、tandard shall be as given in the appropriate Part of EN 288, e.g. EN 288-3 and EN 288-4. An approval of WPS obtained by a manufacturer is valid for welding in workshops or sites under the same technical and quality control of that manufacturer. 8 Validity The approved welding procedure based on prev
38、ious experience is valid as far as the welding production is carried out in the specified range, see clause 6. 9 Documentation The pWPS accepted by the examiner or a test body signed and dated is then an approved welding procedure and is to be retained on record by the manufacturer. BS EN 288-6:1995
39、 BSI 12-1998 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Engineering Sector Board to Technical Committee WEE/36 upon which the following bodies were represented: AEA Technology Aluminium Fed
40、eration Associated Offices Technical Committee Association of Consulting Scientists British Constructional Steelwork Association Ltd. British Gas plc British Nuclear Fuels plc British Railways Board British Stainless Steel Association British Steel Industry Electricity Industry in United Kingdom Eng
41、ineering Equipment and Materials Users Association General, Municipal, Boilermakers and Allied Trades Union Health and Safety Executive Lloyds Register of Shipping Ministry of Defence Power Generation Contractors Association (BEAMA Ltd.) Process Plant Association Railway Industry Association of Grea
42、t Britain Welding Institute Welding Manufacturers Association (BEAMA Ltd.) Co-opted members National annex NB (informative) Cross-references Publication referred toCorresponding British Standard BS EN 288 Specification and approval of welding procedures for metallic materials EN 288-1:1992Part 1:199
43、2 General rules for fusion welding EN 288-2:1992Part 2:1992 Welding procedure specification for arc welding EN 288-3:1992Part 3:1992 Welding procedure tests for the arc welding of steels EN 288-4:1992 Part 4:1992 Welding procedure tests for the arc welding of aluminium and its alloys EN 24063:1992BS
44、 EN 24063:1992 Welding, brazing, soldering and braze welding of metals. Nomenclature of processes and reference numbers for symbolic representation on drawings - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -