30106105 fm Copyright European Comm Provided by IHS under lice No reproduction or network BRITISH STANDARD BS EN 12062 1998 Incorporating Amendments Nos 1 and 2 ` ` ` , , ` ` ` , , ` , , ` , ` , , ` N[.]
Trang 1Non-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
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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As agreed by CEN/TC 121/SC 5 resolution 134/2000 and in accordance with amendment A1:2002, the term “examination” has been replaced by “testing” throughout the document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
of Annex ZA
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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
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© 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
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Page
9.2 Butt- and T-joints with full penetration 9 9.3 Butt- and T-joints without full penetration
10.1 Determination of standard to be applied 9
Annex A (normative) Rules and standards to be
Annex B (informative) Classification of
Annex C (informative) Extent of testing 14 Annex D (informative) Non-acceptable
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Trang 71 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)"
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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
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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
!If required, an external organization, which is employed with the inspection, shall be accredited in accordance with EN ISO/IEC 17025."
8 Documentation
8.1 Documentation prior to testing
Prior to testing, all necessary preliminary information required by the testing method standards shall be provided
8.1.1 Written procedures
!Testing shall always be performed in accordance with written procedures as required by the standard for the individual testing method or as defined by specification."
8.1.2 Testing plan
In certain cases, it can be necessary to carry out additional testing including more than one non-destructive testing method (other than visual testing) or multiple applications of one method In such cases all methods used shall be defined in a testing plan, which shall determine the sequence and extent of testing and other relevant aspects for control of testing and other related activities
8.2 Documentation after testing
8.2.1 Records of individual testing
All testing shall be recorded as required by the referred standard for the relevant testing method
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8.2.2 Final report
For each component or group of components, a final report shall contain the information required by the
testing plan and shall as a minimum include:
— reports required by the standards for the individual testing methods;
— identification of the component;
— reference to the individual testing records including status (not inspected, accepted, rejected);
— identification of welds tested and/or reference to documents identifying these welds;
— system for marking of the individual welds and/or reference to documents indicating !the
description of coordinate system used for testing;"
— identification of personnel and organizations that have performed the testing;
— record of deviations from the applied standard regarding testing technique and acceptance levels
9 Selection of testing method
9.1 General
This standard determines requirements for selection of testing methods for various types of materials and types of fusion welds These methods may be used alone or in combination in order to give the required
result
Before selecting testing methods and levels, the following items should be considered:
— welding processes;
— parent metal, welding consumable and treatment;
— joint type and geometry;
— component configuration (accessibility, surface condition, );
— quality levels;
— imperfection type and orientation expected
Table 2 — Generally accepted methods for detection of accessible surface imperfections for
all types of welds including fillet welds
Materials Testing method
VT and MT
VT and PT
VT and (ET) Austenitic steel, aluminium, nickel, copper and
VT and (ET) ( ) Indicates that the method is applicable with limitations
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