1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 17640:2010Non-destructive testing ofwelds Ultrasonic testing Techniques, testing levels, andassessment (ISO 17640:2010)BS EN ISO 17640:2010 BRITISH STANDARDNational for
2、ewordThis British Standard is the UK implementation of EN ISO17640:2010. It supersedes BS EN 1714:1998 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/46, Non-destructive testing.A list of organizations represented on this committee can beobtained o
3、n request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 55536 7ICS 25.160.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British
4、 Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17640 December 2010 ICS 25.160.40 Supersedes EN 1714:1997English Version Non-dest
5、ructive testing of welds - Ultrasonic testing - Techniques, testing levels, and assessment (ISO 17640:2010)Contrle non destructif des assemblages souds - Contrle par ultrasons - Techniques, niveaux dessai et valuation (ISO 17640:2010) Zerstrungsfreie Prfung von Schweiverbindungen - Ultraschallprfung
6、 - Techniken, Zulssigkeitsgrenzen und Bewertungskriterien (ISO 17640:2010) This European Standard was approved by CEN on 27 November 2010. 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 nation
7、al standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A versi
8、on in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Cz
9、ech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EU
10、ROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17640:2010: EBS EN ISO 17640:2010EN ISO 17640:2010 (E) 3 Foreword T
11、his document (EN ISO 17640:2010) has been prepared by Technical Committee CEN/TC 121 “Welding”, the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 44 “Welding and allied processes“. This European Standard shall be given the status of a national standard, either
12、 by publication of an identical text or by endorsement, at the latest by June 2011, and conflicting national standards shall be withdrawn at the latest by June 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENEL
13、EC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1714:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, B
14、ulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN ISO 17640
15、:2010ISO 17640:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Symbols and definitions.2 4 Principle .2 5 Information required prior to testing.3 5.1 Items to be specified.3 5.2 Specific information required before testing .3 5.3 Written test proc
16、edure 4 6 Requirements for personnel and equipment4 6.1 Personnel qualifications.4 6.2 Equipment 4 6.3 Probe parameters4 7 Testing volume 5 8 Preparation of scanning surfaces .5 9 Parent metal testing 6 10 Range and sensitivity setting.7 10.1 General .7 10.2 Reference for sensitivity setting7 10.3 E
17、valuation levels .8 10.4 Transfer correction8 10.5 Signal to noise ratio 8 11 Testing levels.9 12 Testing techniques9 12.1 General .9 12.2 Manual scan path 9 12.3 Testing for imperfections perpendicular to the testing surface.9 12.4 Location of indications .9 12.5 Evaluation of indications10 13 Test
18、 report11 Annex A (normative) Testing levels for various types of welded joints .13 BS EN ISO 17640:2010ISO 17640:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The w
19、ork of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-govern
20、mental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The
21、 main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
22、 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 17640 was prepared by the European Committee for Standardization (CEN) Technical Committee TC 12
23、1, Welding, Subcommittee SC 5, Testing of welds, in collaboration with ISO Technical Committee TC 44, Welding and allied processes, Subcommittee SC 5, Testing and inspection of welds, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement). This second editio
24、n cancels and replaces the first edition (ISO 17640:2005), which has been technically revised. Requests for official interpretations of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44/SC 5 via your national standards body. A complete listing of these bodi
25、es can be found at www.iso.org. BS EN ISO 17640:2010INTERNATIONAL STANDARD ISO 17640:2010(E) ISO 2010 All rights reserved 1Non-destructive testing of welds Ultrasonic testing Techniques, testing levels, and assessment 1 Scope This International Standard specifies techniques for the manual ultrasonic
26、 testing of fusion-welded joints in metallic materials of thickness greater than or equal to 8 mm which exhibit low ultrasonic attenuation (especially that due to scatter) at object temperatures from 0 C to 60 C. It is primarily intended for use on full penetration welded joints where both the welde
27、d and parent material are ferritic. Where material-dependent ultrasonic values are specified in this International Standard, they are based on steels having an ultrasonic sound velocity of (5 920 50) m/s for longitudinal waves and (3 255 30) m/s for transverse waves. This International Standard spec
28、ifies four testing levels, each corresponding to a different probability of detection of imperfections. Guidance on the selection of testing levels A, B, and C is given in Annex A. This International Standard specifies that the requirements of testing level D, which is intended for special applicati
29、ons, be in accordance with general requirements. Testing level D can only be used when defined by specification. This includes tests of metals other than ferritic steel, tests on partial penetration welds, tests with automated equipment, and tests at object temperatures outside the range 0 C to 60 C
30、. This International Standard can be used for the assessment of indications, for acceptance purposes, by either of the following techniques: a) evaluation based primarily on length and echo amplitude of the signal indication; b) evaluation based on characterization and sizing of the indication by pr
31、obe movement techniques. The techniques used shall be specified. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docume
32、nt (including any amendments) applies. ISO 5817, Welding Fusion-welded joints in steel, nick el, titanium and their alloys (beam welding excluded) Quality levels for imperfection s ISO 9712, Non-destructive testing Qualificat ion and certification of personnel ISO 11666:2010, Non-destructive testing
33、 of welds Ultrasonic testing of welded joints Acceptance levels ISO 23279, Non-destructive testing of welds Ultrasonic testing Characterization of indications in welds ISO 17635, Non-destructive testing of welds General rules for metallic material s EN 473, Non-destructive testing Qualification and
34、certification of NDT personnel General principles BS EN ISO 17640:2010ISO 17640:2010(E) 2 ISO 2010 All rights reservedEN 583-1, Non-destructive testing Ultrasonic ex amination Part 1: General principles EN 583-2, Non-destructive testing Ultrasonic exami nation Part 2: Sensitivity and range setting E
35、N 583-4, Non-destructive testing Ultrasonic examination Part 4: Examination for discontinuities perpendicular to the surface EN 1330-4, Non-destructive testing Te rminology Part 4: Terms used in ultrasonic testing EN 12668 (all parts), Non-destructive testing Characterization and verification of ult
36、rasonic examination equipment 3 Symbols and definitions 3.1 For the purposes of this International Standard, the definitions given in EN 1330-4 and ISO 17635 apply. 3.2 For symbols, their definitions, and units, see Table 1. Indications shall be considered to be either longitudinal or transverse, de
37、pending on the direction of their major dimension with respect to the weld axis, x, in accordance with Figure 2. Table 1 Symbols, their definitions, and units Symbol Definition Unit DDSRdiameter of the disk-shaped reflector mm h extension of the indication in depth direction mm l length of the indic
38、ation mm lxprojected length of the indication in the x-direction mm lyprojected length of the indication in the y-direction mm p full skip distance mm t thickness of parent material (thinnest part) mm x position of the indication in the longitudinal direction mm y position of the indication in the t
39、ransverse direction mm z position of the indication in depth mm 4 Principle The purpose of this International Standard is to describe general techniques of ultrasonic weld testing, using standard criteria, for the most commonly used welded joints at object temperatures in the range 0 C to 60 C. The
40、specific requirements of this International Standard cover the equipment, preparation, performance of the testing, and reporting. The parameters specified, in particular those for the probes, are compatible with the requirements of ISO 11666 and ISO 23279. BS EN ISO 17640:2010ISO 17640:2010(E) ISO 2
41、010 All rights reserved 35 Information required prior to testing 5.1 Items to be specified These include: a) method for setting the reference level; b) method to be used for evaluation of indications; c) acceptance levels; d) testing level; e) manufacturing and operation stage(s) at which the testin
42、g is to be carried out; f) qualification of personnel; g) extent of the testing for transverse indications; h) requirements for additional tandem testing (see EN 583-4); i) parent metal testing prior to and/or after welding; j) whether or not a written testing procedure is required; k) requirements
43、for written testing procedures. 5.2 Specific information required before testing Before any testing of a welded joint can begin, the operator shall have access to the following essential information: a) written testing procedure, if required (see 5.3); b) type(s) of parent material and product form
44、(i.e. cast, forged, rolled); c) manufacturing or operation stage at which testing is to be made, including heat treatment, if any; d) time and extent of any post-weld heat treatment; e) joint preparation and dimensions; f) requirements for surface conditions; g) welding procedure or relevant informa
45、tion on the welding process; h) reporting requirements; i) acceptance levels; j) extent of testing, including requirements for transverse indications, if relevant; k) testing level; l) personnel qualification level; m) procedures for corrective actions when unacceptable indications are revealed. BS
46、EN ISO 17640:2010ISO 17640:2010(E) 4 ISO 2010 All rights reserved5.3 Written test procedure The definitions and requirements in this International Standard normally satisfy the need for a written test procedure. Where this is not the case, or where the techniques described in this International Stan
47、dard are not applicable to the weld joint to be examined, additional written test procedures shall be used, if required by specification. 6 Requirements for personnel and equipment 6.1 Personnel qualifications Personnel performing testing in accordance with this International Standard shall be quali
48、fied to an appropriate level in ultrasonic testing in accordance with ISO 9712 or EN 473 or equivalent in the relevant industrial sector. In addition to a general knowledge of ultrasonic weld inspection, personnel shall also be familiar with testing problems specifically associated with the type of
49、weld joints to be examined. 6.2 Equipment Any equipment used for testing in conjunction with this International Standard shall comply with the requirements of EN 12668 (all parts). 6.3 Probe parameters 6.3.1 Test frequency The frequency shall be within the range 2 MHz to 5 MHz, and shall be selected to comply with the specified acceptance levels. For the initial testing, the frequency shall be as low as possible, within the above range, when the evaluation is carried out according to acceptanc
