1、BS EN ISO 17637:2016Non-destructive testing of welds Visual testing of fusion-welded joints(ISO 17637:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 17637:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO17
2、637:2016. It supersedes BS EN ISO 17637:2011 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not pur
3、port to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 87798 8 ICS 25.160.40 Compliance with a British Standard cannot confer immunity from legal oblig
4、ations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17637 December 2016 ICS 25.160.40 Super
5、sedes EN ISO 17637:2011English Version Non-destructive testing of welds - Visual testing of fusion-welded joints (ISO 17637:2016) Contrle non destructif des assemblages souds - Contrle visuel des assemblages souds par fusion (ISO 17637:2016) Zerstrungsfreie Prfung von Schweiverbindungen - Sichtprfun
6、g von Schmelzschweiverbindungen (ISO 17637:2016) This European Standard was approved by CEN on 19 October 2016. 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 alt
7、eration. 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 version in any other language ma
8、de 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, Czech Republic, Denmark, Esto
9、nia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STAND
10、ARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17637:2016 EBS EN ISO 17637:2016EN I
11、SO 17637:2016 (E) 3 European foreword This document (EN ISO 17637:2016) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” the secretariat of which is held by DIN. This European Standar
12、d shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2017, and conflicting national standards shall be withdrawn at the latest by June 2017. Attention is drawn to the possibility that some of the elements of this docu
13、ment may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 17637:2011. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are
14、 bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Por
15、tugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17637:2016 has been approved by CEN as EN ISO 17637:2016 without any modification. BS EN ISO 17637:2016ISO 17637:2016(E)Foreword iv1 Scope . 12 Normative references 13 Te
16、rms and definitions . 14 Test conditions and equipment . 15 Personnel qualification . 26 Visual testing 26.1 General . 26.2 Visual testing of joint preparation . 26.3 Visual testing during welding 26.4 Visual testing of the finished weld . 36.4.1 General 36.4.2 Cleaning and dressing . 36.4.3 Profile
17、 and dimensions . 36.4.4 Weld root and surfaces . 36.4.5 Post-weld heat treatment . 46.5 Visual testing of repaired welds . 46.5.1 General 46.5.2 Partially removed weld 46.5.3 Completely removed weld . 47 Test records 4Annex A (informative) Examples of test equipment . 6Bibliography .10 ISO 2016 All
18、 rights reserved iiiContents PageBS EN ISO 17637:2016ISO 17637:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technic
19、al 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-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely wi
20、th the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed
21、for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent righ
22、ts. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this
23、 document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in
24、 the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee SC 5, Testing and inspection of welds.This second edition cancels and replaces the first edition (ISO 17637
25、:2003), 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 bodies can be found at www.iso.org.iv ISO 2016 All right
26、s reservedBS EN ISO 17637:2016INTERNATIONAL STANDARD ISO 17637:2016(E)Non-destructive testing of welds Visual testing of fusion-welded joints1 ScopeThis document specifies the visual testing of fusion welds in metallic materials. It may also be applied to visual testing of the joint prior to welding
27、.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electrop
28、edia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 Test conditions and equipmentThe illuminance at the surface with white light shall be a minimum of 350 lx; wearing of tinted goggles (e.g. protective sunglasses) increases the minimum illuminance. However, 500 lx is recommen
29、ded.For direct inspection, the access shall be sufficient to place the eye within 600 mm of the surface to be examined and at an angle not less than 30 (see Figure 1).aRange.Figure 1 Access for testingRemote inspection using mirrors, boroscopes, fibre optic cables or cameras shall be considered when
30、 the access for testing in accordance with Figure 1 is not possible or when specified by an application standard.An additional light source can be used to increase the contrast and relief between imperfections and the background. ISO 2016 All rights reserved 1BS EN ISO 17637:2016ISO 17637:2016(E)Whe
31、re the result of visual testing is inconclusive, the visual test should be supplemented by other non-destructive testing methods for surface inspections.Examples of equipment used for visual testing are given in Annex A.5 Personnel qualificationVisual testing of welds and the evaluation of results f
32、or final acceptance shall be performed by qualified and capable personnel. It is recommended that the personnel performing indirect visual testing is qualified according to ISO 9712 or at an appropriate level in the relevant industry sector.6 Visual testing6.1 GeneralThis document does not define th
33、e extent of visual testing. However, this should be determined in advance, e.g. by reference to an application or product standard.The examiner shall have access to the necessary inspection and production documentation required.Any visual testing prior to, during or after completion of the weld shou
34、ld be carried out while physical access is still possible. This may include the visual testing of surface treatments.6.2 Visual testing of joint preparationWhen visual testing is required prior to welding, the joint shall be examined to check the following:a) the shape and dimensions of the weld pre
35、paration meet the requirements of the welding procedurespecification;b) the fusion faces and adjacent surfaces are clean and any required surface treatment has beencarried out in accordance with the application or product standard;c) the parts to be welded are correctly fixed in relation to each oth
36、er according to drawings orinstructions.6.3 Visual testing during weldingWhen required, the weld shall be tested during the welding process to check the following:a) each run or layer of weld metal is cleaned before it is covered by a further run, particular attentionbeing paid to the junctions betw
37、een the weld metal and the fusion face;b) there are no visible imperfections, e.g. cracks or cavities; if imperfections are observed, they shallbe reported so that remedial action can be taken before the deposition of further weld metal;c) the transition between the runs and between the weld and the
38、 parent metal is so formed thatsatisfactory melting can be accomplished when welding the next run;d) the depth and shape of gouging is in accordance with the WPS or compared with the original grooveshape in order to ensure complete removal of the weld metal as specified;e) after any necessary repair
39、s/remedial action, the weld conforms to the original requirements ofthe WPS.2 ISO 2016 All rights reservedBS EN ISO 17637:2016ISO 17637:2016(E)6.4 Visual testing of the finished weld6.4.1 GeneralThe finished weld shall be examined to determine whether it meets the requirements of the application or
40、product standard or other agreed acceptance criteria, e.g. ISO 5817 or ISO 10042. Finished welds shall at least be examined in accordance with the requirements given in 6.4.2 to 6.4.5.6.4.2 Cleaning and dressingThe weld shall be examined to check the following:a) all slag has been removed by manual
41、or mechanical means in order to avoid imperfections beingobscured;b) there are no tool impressions or blow marks;c) when weld dressing is required, overheating of the joint due to grinding is avoided and that grinding marks and an uneven finish are also avoided;d) for fillet welds and butt welds to
42、be dressed flush, the joint merges smoothly with the parent metalwithout under flushing.If imperfections (caused by dressing or otherwise) are observed, they shall be reported so that remedial action can be taken.6.4.3 Profile and dimensionsThe weld shall be examined to check the following:a) the pr
43、ofile of the weld face and the height of any excess weld metal meet the requirements of theacceptance criteria (see 6.4.1);b) the surface of the weld is regular: the pattern and the pitch of weave marks present an even andsatisfactory visual appearance; the distance between the last layer and the pa
44、rent metal or theposition of runs has been measured where required by the WPS;c) the weld width is consistent over the whole of the joint and that it meets the requirements given inthe weld drawing or acceptance criteria (see 6.4.1); in the case of butt welds, the weld preparationshall be checked to
45、 ensure it has been completely filled and meets the requirements of drawing oracceptance criteria (see 6.4.1).6.4.4 Weld root and surfacesThe visually accessible parts of the weld, i.e. the weld root for a single-sided butt weld and the weld surfaces, shall be examined for deviations from the accept
46、ance criteria (see 6.4.1).The weld shall be examined to check the following:a) in the case of single-sided butt welds, the penetration, root concavity and any burn-through orshrinkage grooves are within the limits specified in the acceptance criteria over the whole ofthe joint;b) any undercut is wit
47、hin the limits indicated in the acceptance criteria;c) any imperfections such as cracks or porosity, detected using optical aids when necessary, in theweld surface or heat affected zones comply with the appropriate acceptance criteria;d) any attachments temporarily welded to the object to facilitate
48、 production or assembly and whichare prejudicial to the function of the object or the ability to examine it are removed so that the ISO 2016 All rights reserved 3BS EN ISO 17637:2016ISO 17637:2016(E)object is not damaged; the area where the attachment was fixed shall be checked to ensure freedom of
49、cracks;e) any arc strikes are within the limits of the acceptance criteria.6.4.5 Post-weld heat treatmentFinal testing shall be done after heat treatment.6.5 Visual testing of repaired welds6.5.1 GeneralWhen welds fail to comply wholly or in part with the acceptance criteria and repair is necessary, the welded joint shall be examined in accordance with 6.5.2 and 6.5.3 prior to re-welding.Every repaired weld shall be re-examined to the same requirements as the original weld.6.5.2 Partially removed weldThe excavation shall be sufficiently deep a
