EN 12732-2013 en Gas infrastructure - Welding steel pipework - Functional requirements (Incorporates Amendment A1 2014)《燃气基础设施 焊接钢管 功能要求》.pdf
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1、BSI Standards PublicationBS EN 12732:2013+A1:2014BS EN 12732:2013Gas infrastructure Weldingsteel pipework FunctionalrequirementsBS EN 12732:2013+A1:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12732:2013+A1:2014. It supersedes BS EN 12732:2013 which is w
2、ithdrawn.The UK committee voted against this standard for several reasons, particularly because of technical differences with a long established UK gas industry standard for welding procedures, BS 4515, and on the requirements for the qualification of welding personnel. Also several improvements req
3、uested by the UK gas industry stakeholders to the draft EN 12732 were not accepted. A full set of UK comments may be obtained from BSI Committee Service Centre. The UK will attempt again to have improvements made when this standard is revised. The UK committee also acknowledges that despite voting a
4、gainst this standard, it can still be used by other UK industries.The UK participation in its preparation was entrusted to Technical Committee GSE/33, Gas supply.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to inc
5、lude all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014ISBN 978 0 580 83807 1ICS 25.160.40Compliance with a British Standard cannot confer immunity from legal obligations.This
6、British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2013.Amendments/corrigenda issued since publicationDate Text affected30 September 2014 Implementation of CEN amendment A1:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12732:2
7、013+A1 April 2014 ICS 25.160.40 Supersedes EN 12732:2013English Version Gas infrastructure - Welding steel pipework - Functional requirements Infrastructures gazires - Soudage des tuyauteries en acier - Prescriptions fonctionnelles Gasinfrastruktur - Schweien an Rohrleitungen aus Stahl - Funktionale
8、 Anforderungen This European Standard was approved by CEN on 14 March 2013 and includes Amendment 1 approved by CEN on 3 February 2014. 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
9、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, French, German). A version
10、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, Bulgaria, Croatia, Cyprus, Czech
11、 Republic, Denmark, Estonia, 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 and United Kingdom. EUR
12、OPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12732:2013+A1:2
13、014 EBS EN 12732:2013+A1:2014EN 12732:2013+A1:2014 (E) 2 Contents Page Foreword 6 1 Scope 7 2 Normative references 8 3 Terms and definitions 11 4 Quality system 13 4.1 General . 13 4.2 Welding contractors . 14 4.3 Welders 15 4.4 Welding supervisory and coordination personnel 15 4.5 Testing companies
14、 and personnel 15 4.5.1 General . 15 4.5.2 Non-destructive testing (NDT) . 15 4.5.3 Destructive testing (DT) . 15 5 Welding consumables 15 6 Production welding. 16 6.1 General requirements . 16 6.1.1 General . 16 6.1.2 Working area . 16 6.1.3 Layout of weld joints 17 6.1.4 Types of weld joints . 17
15、6.1.5 Joint edge preparation . 17 6.1.6 Weld fit-up . 17 6.1.7 Different wall thickness 17 6.1.8 Pipe branches and nozzles 17 6.1.9 Laminations . 17 6.1.10 Butt welds cross joints 17 6.2 Joint preparation. 17 6.2.1 Pipe end preparation 17 6.2.2 Alignment of the joints . 17 6.3 Preheating . 18 6.4 Ta
16、cking 18 6.5 Welding 18 6.6 Actions after welding . 18 6.7 Repair of weld defects 19 7 Special procedures . 19 7.1 General . 19 7.2 Attachment of structural parts 19 7.3 Attachment of cathodic protection connections . 19 7.4 Hot-tapping and other welding work on in-service pipelines 20 8 Inspection
17、of the weld joint . 20 8.1 General . 20 8.2 Scope of inspection 20 8.3 Non-destructive testing and assessment levels . 22 8.4 Time of inspection 23 8.5 Acceptance criteria . 23 8.6 Recording of test results . 24 BS EN 12732:2013+A1:2014EN 12732:2013+A1:2014 (E) 2 Contents Page Foreword 6 1 Scope 7 2
18、 Normative references 8 3 Terms and definitions 11 4 Quality system 13 4.1 General . 13 4.2 Welding contractors . 14 4.3 Welders 15 4.4 Welding supervisory and coordination personnel 15 4.5 Testing companies and personnel 15 4.5.1 General . 15 4.5.2 Non-destructive testing (NDT) . 15 4.5.3 Destructi
19、ve testing (DT) . 15 5 Welding consumables 15 6 Production welding. 16 6.1 General requirements . 16 6.1.1 General . 16 6.1.2 Working area . 16 6.1.3 Layout of weld joints 17 6.1.4 Types of weld joints . 17 6.1.5 Joint edge preparation . 17 6.1.6 Weld fit-up . 17 6.1.7 Different wall thickness 17 6.
20、1.8 Pipe branches and nozzles 17 6.1.9 Laminations . 17 6.1.10 Butt welds cross joints 17 6.2 Joint preparation. 17 6.2.1 Pipe end preparation 17 6.2.2 Alignment of the joints . 17 6.3 Preheating . 18 6.4 Tacking 18 6.5 Welding 18 6.6 Actions after welding . 18 6.7 Repair of weld defects 19 7 Specia
21、l procedures . 19 7.1 General . 19 7.2 Attachment of structural parts 19 7.3 Attachment of cathodic protection connections . 19 7.4 Hot-tapping and other welding work on in-service pipelines 20 8 Inspection of the weld joint . 20 8.1 General . 20 8.2 Scope of inspection 20 8.3 Non-destructive testin
22、g and assessment levels . 22 8.4 Time of inspection 23 8.5 Acceptance criteria . 23 8.6 Recording of test results . 24 EN 12732:2013+A1:2014 (E) 3 9 Documentation 24 9.1 General . 24 9.2 Archiving requirements 24 10 Specific requirements for gas infrastructure with a MOP up to and including 16 bar .
23、 24 10.1 General . 24 10.2 Welders . 24 10.3 Welding supervisory personnel . 25 10.4 Production welding . 25 10.4.1 General . 25 10.4.2 Joint preparation . 25 10.4.3 Welding . 25 10.5 Requirements for records and documentation 25 11 Specific requirements for gas infrastructure with a MOP greater tha
24、n 16 bar . 26 11.1 General . 26 11.2 Welders . 26 11.3 Welding supervisory personnel . 26 11.4 Qualification of welding procedures . 26 11.4.1 General . 26 11.4.2 Filler material requirements for welding procedure qualification 26 11.4.3 Impact testing 27 11.4.4 Transverse tensile test 27 11.4.5 All
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