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1、BRITISH STANDARD BS EN 729-2:1995 Quality requirements for welding Fusion welding of metallic materials Part 2: Comprehensive quality requirements The European Standard EN 729-2:1994 has the status of a British Standard UDC 621.791.5:669:658.562 BS EN 729-2:1995 This British Standard, having been pr
2、epared 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 following BSI references relate to the work on this standard: Committee reference WEE/-/1/6 Draft for comment 92/75857 DC ISBN
3、 0 580 23132 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 normal
4、isation 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 ItalyE
5、nte 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 i Sve
6、rige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments BS EN 729-2:1995 BSI 12-1998i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 729-23 National an
7、nex NA (informative) Committees responsibleInside back cover National annex NB (informative) Cross-referencesInside back cover BS EN 729-2:1995 ii BSI 12-1998 National foreword This British Standard has been prepared under the direction of the Engineering Sector Board and is the English language ver
8、sion of EN 729-2:1994 Quality requirements for welding Fusion welding of metallic materials Part 2: Comprehensive quality requirements, published by the European Committee for Standardization (CEN). EN 729-2 was produced as the result of international discussion in which the UK took an active part.
9、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 perso
10、ns. 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 compri
11、ses a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 8, 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. ? E
12、UROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 729-2 September 1994 UDC 621.791.5:669:658.562 Descriptors: Welding, fusion welding, welded constructions, metal products, quality, quality assurance, manufacturing English version Quality requirements for welding Fusion welding of metallic materia
13、ls Part 2: Comprehensive quality requirements Exigences de qualit en soudage Soudage par fusion des matriaux mtalliques Partie 2: Exigences de qualit complte Schweittechnische Qualittsanforderungen Schmelzschweien metallischer Werkstoffe Teil 2: Umfassende Qualittsanforderungen This European Standar
14、d 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 na
15、tional 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
16、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 Ki
17、ngdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 729-2:1994 E ? EN 729-2:1994 2 BSI 12-1998 Foreword This European Standard was p
18、repared by the Technical Committee 121, Welding, of which the secretariat is held by DS. CEN/TC 121 decided to submit this final draft to the 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 Fu
19、sion 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 qu
20、ality 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, an
21、d 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.
22、 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. C
23、ontents Page Foreword2 1Scope3 2Normative references3 3Definitions4 4Contract and design review4 5Subcontracting5 6Welding personnel5 7Inspection, testing and examination personnel5 8Equipment5 9Welding activities6 10Welding consumables7 11Storage of parent materials7 12Post-weld heat treatment7 13W
24、elding related inspection and testing7 14Non-conforming and corrective action8 15Calibration8 16Identification and traceability8 17Quality records8 ? EN 729-2:1994 BSI 12-19983 1 Scope This standard has been prepared such that: it is independent of the type of welded construction to be manufactured;
25、 it defines quality requirements for welding both in workshops and on site; it provides guidance for describing a manufacturer s capability to produce welded constructions to meet specified requirements; it may also be used as a basis for assessing the manufacturer in respect to his welding capabili
26、ty. The standard is appropriate when demonstration of a manufacturer s capability to produce welded construction, fulfilling specified quality requirements, are specified in one or more of the following: a contract between involved parties; an application standard; a regulatory requirement. The requ
27、irements contained within this standard may be adopted in full or may be selectively deleted by the manufacturer if not applicable to the construction concerned. They provide a flexible framework for the control of welding in the following cases: Case 1 To provide specific requirements for fusion we
28、lding in contracts which require the manufacturer to have a quality system in accordance with EN 29001 or EN 29002. Case 2 To provide specific requirements for fusion welding in contracts which require the manufacturer to have a quality system other than EN 29001 or EN 29002. Case 3 To provide speci
29、fic requirements for fusion welding as guidance to a manufacturer developing a quality system. Case 4 To provide specific requirements for references in application standards which uses fusion welding as part of its requirements or in a contract between relevant parties. It may however be more appro
30、priate for EN 729-3 or EN 729-4 to be used in such cases. 2 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
31、. 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. EN 287-1, Approval testing of welders Fu
32、sion welding Part 1: Steels. EN 287-2, Approval testing of welders Fusion welding Part 2: Aluminium and aluminium alloys. EN 288-1, Specification and approval of welding procedures for metallic materials Part 1: General rules. EN 288-2, Specification and approval of welding procedures for metallic m
33、aterials Part 2: Welding procedure specification for arc welding. EN 288-3, Specification and approval of welding procedures for metallic materials Part 3: Welding procedure tests for arc welding of steels. EN 288-4, Specification and approval of welding procedures for metallic materials Part 4: Wel
34、ding procedure tests for arc welding of aluminium and its alloys. EN 288-5, Specification and qualification of welding procedures for metallic materials Part 5: Approval by using approved welding consumables for arc welding. EN 288-6, Specification and qualification of welding procedures for metalli
35、c materials Part 6: Approval related to previous experience. EN 473, Non-destructive testing Qualification and certification of personnel. EN 719, Welding coordination Tasks and responsibilities. EN 729-1, Quality requirements for welding Fusion welding of metallic materials Part 1: Guidelines for s
36、election and use. EN 729-3, Quality requirements for welding Fusion welding of metallic materials Part 3: Standard quality requirements. ? EN 729-2:1994 4 BSI 12-1998 EN 729-4, Quality requirements for welding Fusion welding of metallic materials Part 4: Elementary quality requirements. prEN 1258, W
37、elding Measurement of preheating temperature, interpass temperature and preheat maintenance temperature during welding. prEN 1418, Welding personnel Approval testing of welding personnel for fully mechanized and automatic welding of metallic materials. EN 29001:1987, Quality systems Model for qualit
38、y assurance in design development, production, installation and servicing. EN 29002:1987, Quality systems Model for quality assurance in production and installation. EN 29692:1994, Metal-arc welding with covered electrode, gas-shielded metal-arc welding and gas welding Joint preparations for steels.
39、 3 Definitions For the purposes of this standard, definitions listed in EN 729-1 apply. 4 Contract and design review 4.1 General The manufacturer shall review the contractual requirements and the design data provided by the purchaser or in-house data for construction designed by the manufacturer. Th
40、is is to ensure that all information necessary to carry out the fabrication operations is available prior to the commencement of the work. The manufacturer shall affirm his capability to meet all welding contract requirements and ensure adequate planning of all quality related activities. Contract r
41、eview is carried out by the manufacturer to verify that the contract is within his capability to perform, that sufficient resources are available to achieve delivery schedules and that documentation is clear and unambiguous. The manufacturer should ensure any variations between the contract and prev
42、ious tender documentation are identified and the purchaser notified of any programme, cost or engineering changes that may result. The items in 4.2 are typically considered at or before the time of the contract review. The items in 4.3 usually form part of the design review and should be taken into
43、account during the contract review if the design is not carried out by the fabricator. It shall be ensured that all relevant information has been supplied by the purchaser. When the contract does not exist, e.g. items made for stock, the manufacturer is required to take into consideration the requir
44、ements of 4.2 whilst carrying out his design review (4.3). 4.2 Application Contract review Contractual requirements to be considered should include: a) the application standard to be used, together with any supplementary requirements; b) the specification of welding procedures, non-destructive testi
45、ng procedures and heat treatment procedures; c) the approach to be used for welding procedure approval; d) the approval of personnel; e) post-weld heat treatment; f) inspection and testing; g) selection, identification and/or traceability, e.g. for materials, welders and welds (see clause 16); h) qu
46、ality control arrangements, including any involvement of an independent inspection body; i) other welding requirements, e.g. batch testing of consumables, ferrite content of weld metal, ageing, hydrogen content; j) environmental conditions relevant to welding on site, e.g. very low temperature ambie
47、nt conditions or any necessity to provide protection against adverse weather conditions; k) subcontracting; l) handling of non-conformances. 4.3 Application Design review Design requirements to be considered should include: a) location, accessibility and sequence of all welds; b) surface finish and
48、the weld profile; c) parent metal(s) specification and welded joint properties; d) permanent backing; e) welds which are to be made in the workshop, or elsewhere; f) dimensions and details of joint preparation and completed joint; g) use of special methods, e.g. to achieve full penetration without b
49、acking when welded from one side only; h) quality and acceptance requirements for welds; i) other special requirements, e.g. acceptability of peening, heat treatment. ? EN 729-2:1994 BSI 12-19985 5 Subcontracting When a manufacturer intends to use subcontracted services (e.g. welding, inspection, non-destructive testing, heat treatment) all relevant specifications and requirements