BS EN 1971-1-2011 Copper and copper alloys Eddy current test for measuring defects on seamless round copper and copper alloy tubes Test with an encircling test coil on the outer su.pdf
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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1971-1:2011Copper and copper alloys Eddy current test formeasuring defects on seamlessround copper and copper alloytubesPart 1: Test with an encircling test coil onthe oute
2、r surfaceCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1971-1:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1971-1:2011.Toget
3、her with BS EN 1971-2:2011, it supersedes BS EN 1971:1999which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee NFE/34/1, Wrought and unwrought copper and copperalloys.A list of organizations represented on this committee can beobtained on request to its secre
4、tary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012ISBN 978 0 580 70540 3ICS 23.040.15; 77.150.30Compliance with a British Standard cannot confer immunity fromlegal oblig
5、ations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2012.Amendments issued since publicationDate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or
6、 networking permitted without license from IHS-,-,-BS EN 1971-1:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1971-1 December 2011 ICS 77.150.30 Supersedes EN 1971:1998English Version Copper and copper alloys - Eddy current test for measuring defects on seamless round copper and copper al
7、loy tubes - Part 1: Test with an encircling test coil on the outer surface Cuivre et alliages de cuivre - Mthode de contrle par courants de Foucault pour le mesurage des dfauts des tubes ronds sans soudure en cuivre et alliages de cuivre - Partie 1: Essai avec une bobine encerclante sur la paroi ext
8、erne Kupfer und Kupferlegierungen - Wirbelstromprfung an Rohren zur Messung von Fehlern an nahtlos gezogenen runden Rohren aus Kupfer und Kupferlegierungen - Teil 1: Prfung mit umfassender Spule auf der Auenseite This European Standard was approved by CEN on 5 November 2011. CEN members are bound to
9、 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 lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CE
10、NELEC 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 the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has t
11、he 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pola
12、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United 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 a
13、ny means reserved worldwide for CEN national Members. Ref. No. EN 1971-1:2011: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1971-1:2011EN 1971-1:2011 (E) 2 Contents Pag
14、e Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .54 General requirements 54.1 Personnel qualification .54.2 Condition of tube to be tested 54.3 Equipment 55 Reference standard tube .76 Acceptance criteria 76.1 Detection of local discontinuities by encircling coils
15、 systems 76.2 Detection of non-local discontinuities by encircling coils systems with lower detection levels .76.3 Other test methods 87 Instrument adjustment 8Figures Figure 1 Representation of eddy current control using encircling coils .6 Figure 2 Representation of eddy current systems that invol
16、ve a relative rotational motion between the tube and the probe (helicoidal control of the tube) 6 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 1971-1:2011EN 1971-1:2011
17、(E) 3 Foreword This document (EN 1971-1:2011) has been prepared by Technical Committee CEN/TC 133 “Copper and copper alloys”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement
18、, at the latest by June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. 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 o
19、r all such patent rights. This document supersedes EN 1971:1998. 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, Est
20、onia, 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. Within its programme of work, Technical Committee CEN/TC 133 requeste
21、d CEN/TC 133/WG 3 “Copper tubes (installation and industrial)“ to revise the following document: EN 1971:1998, Copper and copper alloys Eddy current test for tubes This is one of two parts of the standard for the eddy current test for measuring defects on seamless round copper and copper alloy tubes
22、. The other part is: EN 1971-2, Copper and copper alloys Eddy current test for measuring defects on seamless round copper and copper alloy tubes Part 2: Test with an internal probe on the inner surface In comparison with the first edition of EN 1971:1998, the following significant technical changes
23、were made: split of and extension in two parts; modification of Scope introduction of the choice of test method with encircling coil or internal probe. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without
24、 license from IHS-,-,-BS EN 1971-1:2011EN 1971-1:2011 (E) 4 Introduction The eddy current test described in this European Standard has the objective of detecting during production potential leaks and serious defects in seamless round copper and copper alloy tubes. The eddy current test is able to de
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