1、July 2011 Translation by DIN-Sprachendienst.English price group 9No 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 23
2、.040.10; 77.040.20!$sN“1805843www.din.deDDIN EN ISO 10893-4Non-destructive testing of steel tubes Part 4: Liquid penetrant inspection of seamless and welded steel tubesfor the detection of surface imperfections (ISO 10893-4:2011)English translation of DIN EN ISO 10893-4:2011-07Zerstrungsfreie Prfung
3、 von Stahlrohren Teil 4: Eindringprfung nahtloser und geschweiter Stahlrohre zum Nachweis vonOberflchenunvollkommenheiten (ISO 10893-4:2011)Englische bersetzung von DIN EN ISO 10893-4:2011-07Essais non destructifs des tubes en acier Partie 4: Contrle par ressuage des tubes en acier sans soudure ou s
4、ouds pour ladtection des imperfections de surface (ISO 10893-4:2011)Traduction anglaise de DIN EN ISO 10893-4:2011-07SupersedesDIN EN 10246-11:2000-06www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 12 pages07.11 DIN EN ISO 10893-4:2011-
5、07 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 German body involved in it
6、s 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 10246-11:2000-06 as follows: a) Clause 3 “Terms and definitions” has been added; b) specifi
7、cations relating to the qualification of the personnel have been included; c) the maximum permissible length of imperfections on the tube surface has been partly reduced for acceptance level P4; d) Clause 8 “Test report” has been extended; e) the standard has been editorially revised. Previous editi
8、ons DIN EN 10246-11: 2000-06 2 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10893-4 April 2011 ICS 23.040.10; 77.040.20; 77.140.75 Supersedes EN 10246-11:2000English Version Non-destructive testing of steel tubes Part 4: Liquid penetrant inspection of seamless and welded steel tubes for
9、the detection of surface imperfections (ISO 10893-4:2011) Essais non destructifs des tubes en acier Partie 4: Contrle par ressuage des tubes en acier sans soudure ou souds pour la dtection des imperfections de surface (ISO 10893-4:2011) Zerstrungsfreie Prfung von Stahlrohren Teil 4: Eindringprfung n
10、ahtloser und geschweiter Stahlrohre zum Nachweis von Oberflchenunvollkommenheiten (ISO 10893-4:2011) 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 Stand
11、ard 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 three official versions (English
12、, 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 bodies of Austria, Belgium, Bul
13、garia, 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 United Kingdom. Management Centre: Av
14、enue 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 10893-4:2011: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Contents Page Foreword .3
15、1 Scope4 2 Normative references4 3 Terms and definitions .4 4 General requirements .5 5 Test method .5 5.1 General .5 5.2 Detection of imperfections and their classification.6 5.3 Procedure.6 6 Evaluation of indications7 7 Acceptance 9 8 Test report 2DIN EN ISO 10893-4:2011-07 EN ISO 10893-4:2011 (E
16、) 10Foreword This document (EN ISO 10893-4:2011) 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” the secretariat of which is held by UNI. This European Standard shall be given the status of a
17、 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 latest by October 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of
18、 patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10246-11:2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Eu
19、ropean Standard: 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
20、 the United Kingdom. Endorsement notice The text of ISO 10893-4:2011 has been approved by CEN as a EN ISO 10893-4:2011 without any modification. Non-destructive testing of steel tubes: Part 1: Automated electromagnetic testing of seamless and welded (except submerged arc-welded) steel tubes for the
21、verification of hydraulic leaktightness Part 2: Automated eddy current testing of 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
22、 steel tubes for the detection of longitudinal and/or transverse imperfections Part 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
23、surface imperfections Part 6: Radiographic testing of the weld seam of welded steel 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 stee
24、l tubes for the detection of laminar imperfections Part 9: Automated ultrasonic testing 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)
25、steel tubes for the detection of longitudinal and/or transverse imperfections 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
26、 welded (except submerged arc-welded) steel tubes DIN EN ISO 10893 consists of the following parts, under the general title 3DIN EN ISO 10893-4:2011-07 EN ISO 10893-4:2011 (E) 1 Scope This part of ISO 10893 specifies requirements applicable to liquid penetrant testing of seamless and welded tubes fo
27、r the detection of surface imperfections. It is applicable to all or any part of the tube surface as required by the relevant product standards. It can also be applicable to the testing of hollow sections. 2 Normative references The following referenced documents are indispensable for the applicatio
28、n of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3059, Non-destructive testing Penetrant testing and magnetic particle testing Viewing conditions ISO 3452-1, Non-des
29、tructive testing Penetrant testing Part 1: General principles ISO 3452-2, Non-destructive testing Penetrant testing Part 2: Testing of penetrant materials ISO 9712, Non destructive testing Qualification and certification of personnel ISO 11484, Steel products Employers qualification system for non-d
30、estructive testing (NDT) personnel 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 3452-1 and ISO 11484 and the following apply. 3.1 tube hollow long product open at both ends, of any cross-sectional shape 3.2 seamless tube tube made by piercing a so
31、lid product to obtain a tube hollow, which is further processed, either hot or cold, into its final dimensions 4DIN EN ISO 10893-4:2011-07 EN ISO 10893-4:2011 (E) ISO 10893-4:2011(E) 3.3 welded tube tube made by forming a hollow profile from a flat product and welding adjacent edges together, and wh
32、ich, after welding, can be further processed, either hot or cold, into its final dimensions 3.4 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 standa
33、rd(s) 3.5 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, this liquid penetrant inspection shall be carried out on t
34、ubes after completion of all the primary production process operations (rolling, heat treating, cold and hot working, sizing, primary straightening, etc.). 4.2 The surface of the tube being tested shall be sufficiently clean and free of oil, grease, sand, scale or any other foreign matter which can
35、potentially interfere with the correct interpretation of the indications obtained from liquid penetrant testing. The type of indications, as well as the minimum dimension of the surface imperfections detected, depends on the specific tube manufacturing process and the surface finish. 4.3 This inspec
36、tion shall be carried out by trained operators, qualified in accordance with ISO 9712, ISO 11484 or equivalent, 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 au
37、thorization issued by the employer shall be according to a written procedure. NDT operations shall be authorized by a level 3 NDT individual approved by the employer. NOTE The definition of levels 1, 2 and 3 can be found in appropriate International Standards, e.g. ISO 9712 and ISO 11484. 5 Test met
38、hod 5.1 General 5.1.1 A liquid penetrant is applied to the surface being examined and allowed to enter the surface imperfections. All excess penetrant is then removed; the surface of the part is dried and a developer is applied. The developer functions both as a blotter to absorb penetrant that has
39、been trapped in imperfections and as a contrasting background to enhance the visibility of penetrant indications. The dyestuffs in penetrants are either colour-contrast (visible under white light) or fluorescent (visible under ultraviolet light). For both penetrant techniques, the following three ty
40、pes of penetrant systems can be used: a) water washable; b) post emulsifying; c) solvent removable. Where the term “penetrant materials” is used in this part of ISO 10893, it is intended to include all penetrants, solvents or cleaning agents, developers, etc., used in the testing process. 5DIN EN IS
41、O 10893-4:2011-07 EN ISO 10893-4:2011 (E) 5.1.2 For each tube or each part of the tube under test, either a colour-contrast penetrant technique or a fluorescent penetrant technique, both techniques with one of the three types of penetrant systems, shall be used. The general principles and the method
42、s of verification of liquid penetrant testing as described in ISO 3059, ISO 3452-1 and ISO 3452-2 shall be applied (see 5.3). 5.2 Detection of imperfections and their classification The liquid penetrant method is an effective means of detecting imperfections which are open to the surface (called sur
43、face imperfections in this part of ISO 10893). Typical surface imperfections detectable by this method are cracks, seams, laps, cold shuts, laminations and porosity. The liquid penetrant method does not make it possible to determine the nature, shape and, more generally, the dimensions of the surfac
44、e imperfections revealed. The dimensions of the penetrant indication do not directly represent the actual dimensions of the surface imperfection causing this indication. That is why the classification of liquid penetrant indications shall be the following: a) linear indications indications where the
45、 length of the indication is equal to or more than three times the width of the indication; b) rounded indications indications which are circular or elliptical in shape, where the length of the indication is less than three times the width of the indication; c) accumulated indications indications wh
46、ich are linear or rounded and are aligned or clustered with a separation of not more than the length of the smallest indication and consisting of at least three indications; d) non-relevant indications indications which may result from localized surface irregularities to a particular tube-making pro
47、cess, for example machining marks, scratches and sizing/straightening marks. The minimum dimension of indications that shall be considered during the evaluation shall be as given in Table 1, in relation to the acceptance level specified. Table 1 Minimum dimension of indications that shall be conside
48、red for evaluation Diameter, D, or length, L, of the smallest indication that shall be considered Acceptance level mm P1 1,5 P2 2,0 P3 3,0 P4 5,0 5.3 Procedure The liquid penetrant testing shall be in accordance with the following operational conditions: a) for the choice of the penetrant system, the tube surface condition as well as the test category shall be taken into account; b) for stainless steel tubes, low halogen (chlorine/fluorine) and low sulphur penetrant materials shall b
