BS EN ISO 10893-6-2011 Non-destructive testing of steel tubes Radiographic testing of the weld seam of welded steel tubes for the detection of imperfections《钢管的无损测试 缺陷检测焊接钢管焊缝的放射检测.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 10893-6:2011Non-destructive testing of steeltubesPart 6: Radiographic testing of theweld seam of welded steel tubes forthe detection of imperfections (ISO10893-6:2011)B

2、S EN ISO 10893-6:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO10893-6:2011. It supersedes BS EN 10246-10:2000 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/110, Steel Tubes, and Iron and Steel Fittin

3、gs.A list of organizations represented on this committee can beobtained on 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 59034 4ICS 23.040.10; 25.160.40; 77.040

4、.20; 77.140.75Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2011.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE

5、EUROPISCHE NORM EN ISO 10893-6 April 2011 ICS 23.040.10; 77.040.20; 77.140.75 Supersedes EN 10246-10:2000English Version Non-destructive testing of steel tubes - Part 6: Radiographic testing of the weld seam of welded steel tubes for the detection of imperfections (ISO 10893-6:2011) Essais non destr

6、uctifs des tubes en acier - Partie 6: Contrle radiographique du cordon de soudure des tubes en acier souds pour la dtection des imperfections (ISO 10893-6:2011) Zerstrungsfreie Prfung von Stahlrohren - Teil 6: Durchstrahlungsprfung der Schweinaht geschweiter Stahlrohre zum Nachweis von Unvollkommenh

7、eiten (ISO 10893-6:2011) This European Standard was approved by CEN on 10 December 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 national standard without any alteration. Up-to-date lis

8、ts 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 made by translation under

9、 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, Estonia, Finland, France, G

10、ermany, 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 EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORM

11、UNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10893-6:2011: EBS EN ISO 10893-6:2011EN ISO 10893-6:2011 (E) 3 Foreword This document (EN ISO 10893-6:2011) has been

12、prepared by Technical Committee ISO/TC 17 “Steel“ in collaboration with Technical Committee ECISS/TC 110 “Steel tubes, and iron and steel fittings” the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical

13、text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 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 CENELEC shall not be held respo

14、nsible for identifying any or all such patent rights. This document supersedes EN 10246-10:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cypr

15、us, 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. Endorsement notice The text of ISO 10

16、893-6:2011 has been approved by CEN as a EN ISO 10893-6:2011 without any modification. BS EN ISO 10893-6:2011ISO 10893-6:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 General requirements .2 5 Test method .3 6 Image qu

17、ality6 7 Processing of film .11 8 Viewing conditions for radiographs11 9 Classification of indications.11 10 Acceptance limits11 11 Acceptance 12 12 Test report12 Annex A (informative) Examples of distribution of imperfections.13 BS EN ISO 10893-6:2011ISO 10893-6:2011(E) iv ISO 2011 All rights reser

18、vedForeword ISO (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 technical committees. Each member body interested in a subject for which

19、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 with the International Electrotechnical Commission (IEC) on all matt

20、ers of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circul

21、ated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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 responsib

22、le for identifying any or all such patent rights. ISO 10893-6 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 19, Technical delivery conditions for steel tubes for pressure purposes. This first edition cancels and replaces ISO 12096:1996, which has been technically revised. ISO

23、 10893 consists of the following parts, under the general title Non-destructive testing of steel tubes: Part 1: Automated electromagnetic testing of seamless and welded (except submerged arc-welded) steel tubes for the verification of hydraulic leaktightness Part 2: Automated eddy current testing of

24、 seamless and welded (except submerged arc-welded) steel tubes for the detection of imperfections Part 3: Automated full peripheral flux leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection of longitudinal and/or transverse imperfections Pa

25、rt 4: Liquid penetrant inspection of seamless and welded steel tubes for the detection of surface imperfections Part 5: Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface imperfections Part 6: Radiographic testing of the weld seam of welded ste

26、el tubes for the detection of imperfections Part 7: Digital radiographic testing of the weld seam of welded steel tubes for the detection of imperfections Part 8: Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections Part 9: Automated ultrasonic t

27、esting for the detection of laminar imperfections in strip/plate used for the manufacture of welded steel tubes Part 10: Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections BS

28、EN ISO 10893-6:2011ISO 10893-6:2011(E) ISO 2011 All rights reserved v Part 11: Automated ultrasonic testing of the weld seam of welded steel tubes for the detection of longitudinal and/or transverse imperfections Part 12: Automated full peripheral ultrasonic thickness testing of seamless and welded

29、(except submerged arc-welded) steel tubes BS EN ISO 10893-6:2011BS EN ISO 10893-6:2011INTERNATIONAL STANDARD ISO 10893-6:2011(E) ISO 2011 All rights reserved 1Non-destructive testing of steel tubes Part 6: Radiographic testing of the weld seam of welded steel tubes for the detection of imperfections

30、 1 Scope This part of ISO 10893 specifies requirements for film-based radiographic X-ray testing of the longitudinal or helical weld seams of automated fusion arc-welded steel tubes for the detection of imperfections. It can also be applicable to the testing of circular hollow sections. NOTE As an a

31、lternative, see ISO 10893-7 for digital radiographic testing. 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 document

32、(including any amendments) applies. ISO 5576, Non-destructive testing Industrial X-ray and gamma-ray radiology Vocabulary ISO 5579, Non-destructive testing Radiographic examination of metallic materials by X- and gamma rays Basic rules ISO 9712, Non-destructive testing Qualification and certificatio

33、n of personnel ISO 10893-7, Non-destructive testing Part 7: Digital radiographic testing of the weld seam of welded steel tubes for the detection of imperfections ISO 11484, Steel products Employers qualification system for non-destructive testing (NDT) personnel ISO 11699-1, Non-destructive testing

34、 Industrial radiographic films Part 1: Classification of film systems for industrial radiography ISO 17636, Non-destructive testing of welds Radiographic testing of fusion-welded joints ISO 19232-1, Non-destructive testing Image quality of radiographs Part 1: Image quality indicators (wire type) Det

35、ermination of image quality value ISO 19232-2, Non-destructive testing Image quality of radiographs Part 2: Image quality indicators (step/hole type) Determination of image quality value BS EN ISO 10893-6:2011ISO 10893-6:2011(E) 2 ISO 2011 All rights reserved3 Terms and definitions For the purposes

36、of this document, the terms and definitions given in ISO 5576 and ISO 11484 and the following apply. 3.1 tube hollow long product open at both ends, of any cross-sectional shape 3.2 welded tube tube made by forming a hollow profile from a flat product and welding adjacent edges together, and which a

37、fter welding can be further processed, either hot or cold, into its final dimensions 3.3 manufacturer organization that manufactures products in accordance with the relevant standard(s) and declares the compliance of the delivered products with all applicable provisions of the relevant standard(s) 3

38、.4 agreement contractual arrangement between the manufacturer and purchaser at the time of enquiry and order 4 General requirements 4.1 Unless otherwise specified by the product standard or agreed on by the purchaser and manufacturer, a radiographic inspection shall be carried out on tubes after com

39、pletion of all the primary production process operations (rolling, heat treating, cold and hot working, sizing, primary straightening, etc.). 4.2 This inspection shall be carried out by trained operators qualified in accordance with ISO 9712, ISO 11484 or equivalent, and supervised by competent pers

40、onnel nominated by the manufacturer. In the case of third-party inspection, this shall be agreed on between the purchaser and manufacturer. The operating authorization issued by the employer shall be according to a written procedure. NDT operations shall be authorized by a level 3 NDT individual app

41、roved by the employer. NOTE The definitions of level 1, 2 and 3 can be found in appropriate International Standards, e.g. ISO 9712 and ISO 11484. 4.3 The tubes under test shall be sufficiently straight and free of foreign matter as to ensure the validity of the test. The surfaces of the weld seam an

42、d adjacent parent metal shall be sufficiently free of such foreign matter and surface irregularities which can interfere with the interpretation of the radiographs. Surface grinding is permitted in order to achieve an acceptable surface finish. 4.4 In cases where the weld reinforcement is removed, m

43、arkers, usually in the form of lead arrows, shall be placed on each side of the weld such that its position can be identified on the radiograph. 4.5 Identification symbols, usually in the form of lead letters, shall be placed on each section of the weld beam radiograph such that the images of these

44、symbols appear in the radiograph to ensure unequivocal identification of the section. 4.6 Permanent markings shall be provided on the source side of the tube surface to provide reference points for the accurate relocation of the position of each radiograph. Where the nature of the product or its int

45、ended service conditions render stamping impossible, other suitable means shall be provided for relocating the radiographs, e.g. by paint marking or reference to accurate sketches. BS EN ISO 10893-6:2011ISO 10893-6:2011(E) ISO 2011 All rights reserved 34.7 When carrying out radiography of a continuo

46、us length of a weld with separate films, adjacent films shall overlap by at least 10 mm to ensure that no portion of the weld length remains unexamined. 5 Test method 5.1 The weld of longitudinally or helically welded tubes shall be radiographically tested using the X-ray film technique. The applica

47、tion of non-film, digital radiographic techniques shall conform to ISO 10893-7. 5.2 Two image quality classes A and B, in accordance with ISO 17636, shall be specified: class A: X-ray examination technique with standard sensitivity; class B: X-ray examination technique with enhanced sensitivity. NOT

48、E Most applications are covered by the use of image quality class A. Image quality class B is intended for more important and difficult applications where image quality class A can be insufficiently sensitive to reveal all the imperfections being detected. Image quality class B requires the use of f

49、ilm system class C4 or higher (fine grain films and lead screens) and, therefore, generally requires a longer exposure time. The required image quality class is usually stated in the relevant product standard. 5.3 The film system class used shall be at least film system class C5 for image quality class A and shall be at least C4 (C3 for X-ray voltage 150 kV) for image quality class B. (The classes are defined in ISO 5579, ISO 11699-1 and ISO 17636.) The front intensifying metal screen, for