BS-EN-12062-1998.pdf

BRITISH STANDARD BS EN 12062:1998 Incorporating Amendments Nos.1 and 2 Non-destructive examination of welds General rules for metallic materials The European Standard EN 12062:1997, with the incorporation of amendments A1:2002 and A2:2003, has the status of a British Standard ICS 25.160.40 ? BS EN 12062:1998 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 1998 © BSI 26 March 2004 ISBN 0 580 28699 1 National foreword This British Standard is the English language version of EN 12062:1997, including amendments A1:2002 and A2:2003. The start and finish of text introduced or altered by CEN amendment is indicated in the text by tags !“. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“. As agreed by CEN/TC 121/SC 5 resolution 134/2000 and in accordance with amendment A1:2002, the term “examination” has been replaced by “testing” throughout the document. The UK participation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its 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, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Amendments issued since publication Amd. NoDateComments 139861 November 2002See national foreword 1493426 March 2004Revision to foreword page and deletion of Annex ZA EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 12062 August 1997 + A1 May 2002 + A2 December 2003 ICS 25.160.40 Descriptors: Welded joints, steels, aluminium, copper, nickel, titanium, alloys, non destructive tests, quality control, weld defects, qualification, personnel, approved organizations, comparison English version Non-destructive examination of welds General rules for metallic materials (includes amendments A1:2002 and A2:2003) Contrôle non destructif des assemblages soudés Règles générales pour les matériaux métalliques (inclut les amendements A1:2002 et A2:2003) Zerstörungsfreie Prüfung von Schweißverbindungen Allgemeine Regeln für metallische Werkstoffe (enthält Änderungen A1:2002 und A2:2003) This European Standard was approved by CEN on 1997-08-02, amendment A1 was approved by CEN on 2002-05-01, and amendment A2 was approved by CEN on 2003-11-20. 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, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, 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 © 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12062:1997 + A1:2002 + A2:2003 E EN 12062:1997 © BSI 26 March 2004 2 Foreword This European Standard has been prepared by Technical Committee CEN/TC 121, Welding, the Secretariat of which is held by DS. 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 1998, and conflicting national standards shall be withdrawn at the latest by February 1998. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This document EN 12062:1997/A1:2002 has been prepared by Technical Committee CEN/TC 121, Welding, the Secretariat of which is held by DS. This amendment to the European Standard EN 12062:1997 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2002, and conflicting national standards shall be withdrawn at the latest by November 2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. Annex ZA is normative, Annex C and Annex D are informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A2 This document EN 12062:1997/A2:2003 has been prepared by Technical Committee CEN/TC 121, Welding, the Secretariat of which is held by DS. This Amendment to the European Standard EN 12062:1997 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2004, and conflicting national standards shall be withdrawn at the latest by June 2004. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. EN 12062:1997 © BSI 26 March 2004 3 Contents Page Foreword2 1Scope5 2Normative references5 3Definitions6 4Abbreviations6 5Limitations7 5.1Stage of manufacture7 5.2Extent of testing7 5.3Materials7 6Personnel qualification7 7Testing organization7 8Documentation7 8.1Documentation prior to testing7 8.2Documentation after testing7 9Selection of testing method8 9.1General8 9.2Butt- and T-joints with full penetration9 9.3Butt- and T-joints without full penetration and fillet welds9 10Performance of testing9 10.1 Determination of standard to be applied9 10.2 Conditions for testing9 10.3 Time of testing10 10.4 Non-acceptable indications10 Annex A (normative) Rules and standards to be applied11 Annex B (informative) Classification of indications13 Annex C (informative) Extent of testing14 Annex D (informative) Non-acceptable indications14 4 blank EN 12062:1997 © BSI 26 March 2004 5 1 Scope Based on quality requirements, material, weld thickness, welding process and extent of testing, this standard gives guidance for the choice of non-destructive testing methods of welds and evaluation of the results for quality control purposes. This standard also specifies general rules and standards to be applied to the different types of testing, for either the methodology or the acceptance level for metallic materials. Acceptance levels cannot be a direct interpretation of the quality levels defined in EN 25817 or EN 30042. They are linked to the overall quality of the produced batch of welds. Requirements for acceptance levels for non-destructive testing comply with quality levels stated in EN 25817 or EN 30042 (moderate, intermediate, stringent), only on a general basis and not in detail for each indication. This standard can be used by application standards or by agreement between the contracting parties. 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. 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 473, Qualification and certification of NDT personnel General principles. EN 571-1, Non-destructive examination Penetrant testing Part 1: General principles. EN 970, Non-destructive examination of fusion welds Visual examination. prEN 1289, Non-destructive testing of welds Penetrant testing of welds Acceptance levels. prEN 1290,!Non-destructive testing of welds Magnetic particle testing of welds.“ prEN 1291, Non-destructive testing of welds Magnetic particle examination of welds Acceptance levels. EN 1435, Non-destructive examination of welds Radiographic testing of welded joints. prEN 1711, Non-destructive examination of welds Eddy current examination by phase discrimination method. EN 1712, Non-destructive examination of welds Ultrasonic examination of welded joints Acceptance levels. prEN 1713, Non-destructive examination of welds Ultrasonic examination Characterization of imperfections in welds. EN 1714, Non-destructive testing of welds Ultrasonic testing of welded joints. prEN 12517, Non-destructive examination of welds Radiographic examination of welded joints Acceptance levels. EN 25817, Arc-welded joints in steel Guidance on quality levels for imperfections. (ISO 5817:1992) EN 30042, Arc-welded joints in aluminium and its weldable alloys Guidance on quality levels for imperfections. (ISO 10042:1992) EN 45001, General criteria for the operation of testing laboratories. !EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories. (ISO/IEC 17025)“ EN 12062:1997 6© BSI 26 March 2004 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 testing testing of a material in accordance with a standard, or a specification, or a procedure 3.2 testing level degree of thoroughness and selection of parameter settings with which testing method is applied. Different levels correspond to different sensitivities and/or probabilities of detection. The selection of testing levels is normally related to the quality requirements 3.3 evaluation level testing level from which an indication is to be evaluated (see Annex B) 3.4 recording level testing level from which an indication is to be recorded (see Annex B) 3.5 acceptance level testing level below which components are accepted (see Annex B) 3.6 testing organization internal or external organization carrying out the non-destructive testing 3.7 indication representation or signal from a discontinuity in the format allowed by the non-destructive testing method used 3.8 internal imperfections imperfections that are not open to a surface or not directly accessible 3.9 quality level fixed limits of imperfections corresponding to the expected quality in a weld. The limits are determined with regard to type of imperfection, their amount and their actual dimensions 3.10 inspection lot a group of welds (a group can be a part of weld or a full weld or several welds) which would be expected to show a uniform quality because of the welding procedure applied, material, type of joints, welder, environmental conditions during execution, time period or other items affecting the quality 4 Abbreviations For the purposes of this standard, the abbreviations given in Table 1 apply. Table 1 Abbreviations Testing method Abbreviation Eddy current testing ET Magnetic particle testing MT Penetrant testing PT Radiographic testing RT Ultrasonic testing UT Visual testing VT EN 12062:1997 © BSI 26 March 2004 7 5 Limitations 5.1 Stage of manufacture This standard has been prepared for the testing of completed welds (see 10.3). Testing of parent materials prior to welding or between welding sequences are not covered by this standard. It is, however, recommended that such testing should be performed in accordance with the referred standards for methods and acceptance levels. 5.2 Extent of testing !The extent of testing shall be given in an application standard or defined by specification.“ Guidance on random testing is given in Annex C. 5.3 Materials This standard includes requirements for the testing of fusion welds in the following materials, their alloys and their combinations: steel; aluminium; copper; nickel; titanium. !The use of this standard for other metallic materials shall be defined by specification.“ 6 Personnel qualification Personnel performing non-destructive testing and the evaluation of the results for final acceptance of welds shall be qualified in accordance with EN 473 or equivalent at an appropriate level in the relevant industrial sector. 7 Testing organization The testing organization should be organized independently of the production and its activities should be controlled by a quality assurance system.