1、July 2011 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 2
2、3.040.10; 77.040.20!$sb“1805663www.din.deDDIN EN ISO 10893-6Non-destructive testing of steel tubes Part 6: Radiographic testing of the weld seam of welded steel tubes forthe detection of imperfections (ISO 10893-6:2011)English translation of DIN EN ISO 10893-6:2011-07Zerstrungsfreie Prfung von Stahl
3、rohren Teil 6: Durchstrahlungsprfung der Schweinaht geschweiter Stahlrohre zum Nachweisvon Unvollkommenheiten (ISO 10893-6:2011)Englische bersetzung von DIN EN ISO 10893-6:2011-07Essais non destructifs des tubes en acier Partie 6: Contrle radiographique du cordon de soudure des tubes en acier souds
4、pourla dtection des imperfections (ISO 10893-6:2011)Traduction anglaise de DIN EN ISO 10893-6:2011-07SupersedesDIN EN 10246-10:2000-07 andDIN EN 10246-10 www.beuth.deDocument comprises 20 pagesIn case of doubt, the German-language original shall be considered authoritative.Corrigendum 1:2001-0707.11
5、 DIN EN ISO 10893-6:2011-07 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 17 “Steel” in collaboration with Technical Committee ECISS/TC 110 “Steel tubes, and iron and steel fittings” (Secretariat: UNI, Italy). The responsible
6、 German body involved in its preparation was the Normenausschuss Eisen und Stahl (Iron and Steel Standards Committee), Working Committee NA 021-00-09-06 UA Zerstrungsfreie Prfung von Rohren. Amendments This standard differs from DIN EN 10246-10:2000-07 and DIN EN 10246-10:Berichtigung 1:2001-07 as f
7、ollows: a) the scope has been extended to include all fusion welded steel tubes; b) Clause 3 “Terms and definitions” has been added; c) specifications relating to the qualification of the personnel have been included; d) the image quality classes A and B (previously R2 and R1) have been aligned with
8、 the corresponding ISO standards and the relevant tables have been updated; e) Figures 3 and 4 have been added to explain the specifications of the positioning and types of image quality indicators; f) Clause 12 “Test report” has been extended; g) the standard has been editorially revised. Previous
9、editions DIN EN 10246-10: 2000-07 DIN EN 10246-10: Corrigendum 1: 2001-07 EUROPEAN STANDARD NORME EUROPENNE 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 o
10、f the weld seam of welded steel tubes for the detection of imperfections (ISO 10893-6:2011) Essais non destructifs 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 Stah
11、lrohren - Teil 6: Durchstrahlungsprfung der Schweinaht geschweiter Stahlrohre zum Nachweis von Unvollkommenheiten (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 condition
12、s 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in
13、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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards
14、 bodies of Austria, Belgium, Bulgaria, 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 Unite
15、d Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG 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 10893-6:2
16、011: EContents Page Foreword3 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 General requirements6 5 Test method7 6 Image quality10 7 Processing of film15 8 Viewing conditions for radiographs 15 9 Classification of indications.15 10 Acceptance limits 15 11 Acceptance.16 12 Test repo
17、rt 16 Annex A (informative) Examples of distribution of imperfections.17 DIN EN ISO 10893-6:2011-07 EN ISO 10893-6:2011 (E) 2 Foreword This document (EN ISO 10893-6:2011) has been prepared by Technical Committee ISO/TC 17 “Steel” in collaboration with Technical Committee ECISS/TC 110 “Steel tubes, a
18、nd 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 text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the late
19、st 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 responsible for identifying any or all such patent rights. This document supersedes EN 10246-10:2000. DIN EN ISO 10893 consis
20、ts 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 seamless and
21、 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 Part 4: Liquid
22、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 steel tubes for
23、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 testing for th
24、e 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 Part 11: Automat
25、ed 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 (except submerged arc-welded) steel tubes DIN EN ISO 10893-6:2011-07 EN ISO 10893-6:20
26、11 (E) 3 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland
27、, 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 10893-6:2011 has been approved by CEN as a EN ISO 10893-6:2011 without any modification. D
28、IN EN ISO 10893-6:2011-07 EN ISO 10893-6:2011 (E) 4 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 th
29、e testing of circular hollow sections. NOTE As an alternative, 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 referen
30、ces, the latest edition of the referenced document (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
31、-destructive testing Qualification and certification 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 (
32、NDT) personnel ISO 11699-1, Non-destructive testing 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 radiograp
33、hs Part 1: Image quality indicators (wire type) Determination 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 DIN EN ISO 10893-6:2011-07 EN ISO 10893-6:2011 (E) 5 3 Terms a
34、nd definitions For the purposes 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 adja
35、cent edges together, and which after 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 provisio
36、ns of the relevant standard(s) 3.4 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 b
37、e carried out on tubes after completion 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,
38、and supervised by competent personnel 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
39、 by a level 3 NDT individual approved 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.
40、The surfaces of the weld seam and 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
41、weld reinforcement is removed, markers, 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 radiograp
42、h such that the images of these 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
43、nature of the product or its intended 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. DIN EN ISO 10893-6:2011-07 EN ISO 10893-6:2011 (E) 6 4.7 When carrying out radiography
44、of a continuous 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
45、. The application 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 tec hnique with standard sensitivity; class B: X-ray examination tec hnique with enhanced s
46、ensitivity. NOTE 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 requir
47、es the use of film 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 i
48、mage 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 both image quality class B and image quality class A, shall have a thickness of between 0,
49、02 mm and 0,25 mm. Other thicknesses may be adopted for the back intensifying screen. In cases where a double film technique is used, both intensifying screens, if used, shall be in the upper thickness range of the front intensifying screen. 5.4 Salt intensifying screens shall not be used. 5.5 The amount of back-scattered and internally scattered X-ray radiation absorbed by the film shall be minimized. If there is doubt regarding the adequacy of protection from back-scattered X-ray radiation, a ch
