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1、BRITISH STANDARD BS EN 729-3:1995 Quality requirements for welding Fusion welding of metallic materials Part 3: Standard quality requirements The European Standard EN 729-3:1994 has the status of a British Standard UDC 621.791.5:669:658.562 BS EN 729-3:1995 This British Standard, having been prepare
2、d 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 92/75858 DC ISBN 0 58
3、0 23133 X 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 normalisati
4、on 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 ItalyEnte N
5、azionale 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 Sverige
6、SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments BS EN 729-3:1995 BSI 12-1998i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 729-33 National annex N
7、A (informative) Committees responsibleInside back cover National annex NB (informative) Cross-referencesInside back cover BS EN 729-3:1995 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 version
8、of EN 729-3:1994 Quality requirements for welding Fusion welding of metallic materials Part 3: Standard quality requirements, published by the European Committee for Standardization (CEN). EN 729-3 was produced as the result of international discussion in which the UK took an active part. There has
9、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 Brit
10、ish 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 fron
11、t 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. ? EUROPEAN ST
12、ANDARD NORME EUROPENNE EUROPISCHE NORM EN 729-3 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 materials Part 3:
13、 Standard quality requirements Exigences de qualit en soudage Soudage par fusion des matriaux mtalliques Partie 3: Exigences de qualit normale Schweitechnische Qualittsanforderungen Schmelzschweien metallischer Werkstoffe Teil 3: Standard-Qualittsanforderungen This European Standard was approved by
14、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 m
15、ay 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 Ce
16、ntral 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 Europea
17、n 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 729-3:1994 E ? EN 729-3:1994 BSI 12-1998 2 Foreword This European Standard was prepared by the Tec
18、hnical 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 weldin
19、g 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 requi
20、rements; 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
21、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
22、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. Contents Pag
23、e Foreword2 1Scope3 2Normative references3 3Definitions3 4Contract and design review4 5Subcontracting4 6Welding personnel4 7Inspection, testing and examination personnel5 8Equipment5 9Welding activities5 10Storage and handling of welding consumables6 11Storage of parent materials6 12Post-weld heat t
24、reatment6 13Welding related inspection and testing6 14Non-conforming and corrective action7 15Identification and traceability7 16Quality records7 ? EN 729-3:1994 BSI 12-19983 1 Scope This standard has been prepared such that: it is independent of the type of welded construction to be manufactured; i
25、t 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 capability
26、. 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 requir
27、ements 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 weld
28、ing in contracts which require the manufacturer to have a quality system other than EN 29001 or EN 29002. Case 2 To provide specific requirements for fusion welding as guidance to a manufacturer developing a quality system. Case 3 To provide specific requirements for references in application standa
29、rds which uses fusion welding as part of its requirements or in a contract between relevant parties. It may however be more appropriate for 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.
30、 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 u
31、ndated references the latest edition of the publication referred to applies. EN 287-1, Approval testing of welders Fusion 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 fo
32、r metallic materials Part 1: General rules for fusion welding. EN 288-2, Specification and approval of welding procedures for metallic materials Part 2: Welding procedure specification for arc welding. EN 288-3, Specification and approval of welding procedures for metallic materials Part 3: Welding
33、procedure tests for arc welding of steels. EN 288-4, Specification and approval of welding procedures for metallic materials Part 4: Welding procedure tests for arc welding of aluminium and its alloys. EN 288-5,Specification and qualification of welding procedures for metallic materials Part 5: Appr
34、oval by using approved welding consumables for arc welding. EN 288-6,Specification and qualification of welding procedures for metallic materials Part 6: Approval related to previous experience. EN 473, Non-destructive testing Qualification and certification of personnel. EN 719, Welding coordinatio
35、n Tasks and responsibilities. EN 729-1, Quality requirements for welding Fusion welding of metallic materials Part 1: Guidelines for selection and use. EN 729-4, Quality requirements for welding Fusion welding of metallic materials Part 4: Elementary quality requirements. prEN 1258, Welding Measurem
36、ent 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, Quality systems Model for quality assurance in desig
37、n development, production, installation and servicing. EN 29002, 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 steel. 3 Definitions For the pur
38、poses of this standard, definitions listed in EN 729-1 apply. ? EN 729-3:1994 4 BSI 12-1998 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
39、. This 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. The it
40、ems 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 account during the contract review if the design is not carried out by the fabricator. It shall be ensured that all relevant information
41、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 requirements of 4.2 whilst carrying out his design review (4.3). 4.2 Application Contract review Contractual requirements to be considered shou
42、ld include, when necessary: a) the application standard to be used, together with any supplementary requirements b) the specification of welding procedures, non-destructive testing procedures and heat treatment procedures; c) the approach to be used for welding procedure approval; d) the approval of
43、 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 15); h) quality control arrangements, including any involvement of an independent inspection body; i) other welding requirements, e.
44、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 ambient conditions or any necessity to provide protection against adverse weather conditions; k) subcontracting; l) handling of
45、 non-conformances. 4.3 Application Design review Design requirements to be considered should include, when necessary: a) location, accessibility and sequence of all welds; b) surface finish and the weld profile; c) parent metal(s) specification and welded joint properties; d) permanent backing; e) w
46、elds 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 backing when welded from one side only; h) quality and acceptance requirements for welds; i) other special
47、requirements, e.g. acceptability of peening, heat treatment. 5 Subcontracting When a manufacturer intends to use subcontracted services (e.g. welding, inspection, non-destructive testing, heat treatment) all relevant specifications and requirements shall be supplied by the manufacturer to the subcon
48、tractor. The subcontractor shall provide such records and documentation of his work as may be specified by the manufacturer. Any subcontractor shall work under the order and responsibility of the manufacturer and shall fully comply with the relevant requirements of this standard. The manufacturer sh
49、all ensure that the subcontractor can comply with the quality requirements of the contract. The information to be provided by the manufacturer to the subcontractor shall include all relevant data from the contract review (see 4.2) and the design review (see 4.3). Additional requirements may need to be specified if the design of a structure is to be subcontracted. 6 Welding personnel 6.1 General The manuf