BS EN 13067-2012 Plastics welding personnel Qualification testing of welders Thermoplastics welded assemblies《塑料焊接人员 焊工的资格考试 热塑塑料焊接组件》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13067:2012Plastics welding personnel Qualification testing of welders Thermoplastics weldedassembliesBS EN 13067:2012 BRITISH STANDARDNational forewordThis British Standard

2、 is the UK implementation of EN 13067:2012. It supersedes BS EN 13067:2003 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/80, Welding thermoplastics.A list of organizations represented on this committee can be obtained on request to its secretary.

3、This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 74081 7 ICS 25.160.10 Compliance with a British Standard cannot co

4、nfer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendments issued since publicationDate Text affectedBS EN 13067:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13067 November 201

5、2 ICS 03.100.30; 25.160.10 Supersedes EN 13067:2003English Version Plastics welding personnel - Qualification testing of welders - Thermoplastics welded assemblies Personnel en soudage des plastiques - preuve de qualification des soudeurs - Assemblages souds thermoplastiques Kunststoffschweipersonal

6、 - Anerkennungsprfung von Schweiern - Thermoplastische Schweiverbindungen This European Standard was approved by CEN on 22 September 2012. 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 nation

7、al 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 versi

8、on 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, Cz

9、ech 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.

10、EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13067:2012: EBS EN 13067

11、:2012EN 13067:2012 (E) 2 Contents Page Foreword . 3Introduction 41 Scope . 52 Normative references . 63 Terms and definitions 64 Admission to the qualification tests . 85 Testing of skill and knowledge . 96 Duty of Plastics Welding Examiner and invigilator. 167 Range of qualification 168 Welding of

12、test piece 169 Test piece and test specimens, shapes and dimensions 1610 Evaluation and acceptance criteria of test piece(s) and test specimens . 2411 Test result and qualification test certificate . 2812 Failed test 2913 Period of validity . 2914 Qualification test certificate renewal 30Annex A (in

13、formative) Welding recording sheet . 31Annex B (informative) Welders qualification tests certificate format . 32Annex C (informative) PWE evaluation sheet for practical test 33Bibliography . 42BS EN 13067:2012EN 13067:2012 (E) 3 Foreword This document (EN 13067:2012) has been prepared by Technical C

14、ommittee CEN/TC 249 “Plastics”, the secretariat of which is held by NBN. 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 May 2013, and conflicting national standards shall be withdrawn at the late

15、st by May 2013. 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 13067:2003. In this revision, the scope of

16、 this standards includes solvent welding: socket and covers the welding of the polypropylene (PP) lining membranes (group 9: PP). According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria,

17、 Belgium, Bulgaria, Croatia, Cyprus, Czech 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, S

18、witzerland, Turkey and the United Kingdom. BS EN 13067:2012EN 13067:2012 (E) 4 Introduction This standard covers the principles to be observed in the qualification testing of welder performance for the welding of thermoplastic materials. The ability of the welder to follow verbal or written instruct

19、ions and testing of his skill are important factors in ensuring the quality of the welded product. This standard is intended to provide the basis for the mutual recognition by examining bodies for qualification relating to welders competence in the various fields of application. BS EN 13067:2012EN 1

20、3067:2012 (E) 5 1 Scope This European Standard specifies the method of testing the knowledge and skill of a welder who is required to carry out welds on thermoplastics in new constructions and repair work. The skill examination of a welder is an essential condition for the assurance of the quality o

21、f the welding work. The application of this standard guarantees that the examination is carried out according to a uniform test procedure. This European Standard applies when the contractor or the authorities responsible for the application require it. Gas and water utility network industries with a

22、lternative qualification programmes are excluded from this standard. This European Standard applies to the following welding processes: hot gas welding: round nozzle, high speed nozzle, wedge; extrusion welding; heated tool welding: butt, saddle, socket, wedge; electrofusion welding: socket, saddle;

23、 solvent welding: socket. This European Standard applies to the welding of the following products: sheet; pipe; fittings; lining membrane. This European Standard covers the welding of the following groups of materials: a) for sheets, pipes and fittings: 1) group 1: PVC (including all kinds of PVC-U,

24、 PVC-C), ABS; 2) group 2: PP (including all kinds of PP); 3) group 3: PE (including all kinds of PE); 4) group 4: PVDF; 5) group 5: ECTFE or PFA or FEP; b) for lining membranes: 1) group 6: PVC-P; BS EN 13067:2012EN 13067:2012 (E) 6 2) group 7: PE (including all kinds of PE); 3) group 8: ECB; 4) gro

25、up 9: PP. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including

26、 any amendments) applies. EN 12814-1, Testing of welded joints of thermoplastics semi-finished products Part 1: Bend test EN 12814-2:2000, Testing of welded joints of thermoplastics semi-finished products Part 2: Tensile test EN 12814-4, Testing of welded joints of thermoplastics semi-finished produ

27、cts Part 4: Peel test EN 12814-8, Testing of welded joints of thermoplastics semi-finished products Part 8: Requirements EN 13100-1, Non destructive testing of welded joints of thermoplastics semi-finished products Part 1: Visual examination EN 14728, Imperfections in thermoplastic welds Classificat

28、ion EN ISO/IEC 17024:2003, Conformity assessment General requirements for bodies operating certification of persons (ISO/IEC 17024:2003) EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025) 3 Terms and definitions For the purposes of this

29、document, the terms and definitions from EN ISO/IEC 17024:2003 and the following apply. 3.1 AD-WLD break failure mode in an extrusion welded membrane peel test specimen where the failure is through the weld material 3.2 certificate issuing authority establishment responsible for approving the PWE an

30、d or the Invigilator 3.3 invigilator qualified person approved by Certificate Issuing Authority (CIA) who can supervise the practical and theoretical tests Note 1 to entry: 3.3 and 3.5 can be the same person. 3.4 manufacturer company, contractor or organisation who is responsible for the welding BS

31、EN 13067:2012EN 13067:2012 (E) 7 3.5 Plastics Welding Examiner PWE qualified person approved by Certificate Issuing Authority (CIA) who verifies the compliance with this standard 3.6 qualification test theoretical and practical tests in order to verify the knowledge and the skill of the welder 3.7 r

32、ange of qualification welding processes, types of joint, materials, thicknesses and diameters for which a welder is qualified 3.8 test piece assembly which is welded during the practical test 3.9 test specimen part or portion cut from the test piece for the test specified 3.10 test house establishme

33、nt having all relevant test equipment to carry out the required tests and working in compliance with EN ISO/IEC 17025 3.11 training centre educational establishment for training plastics welding personnel and/or Plastics Welding Examiner, approved by CIA 3.12 welding process technique characterized

34、by the method of softening to obtain permanent assembly 3.12.1 electrofusion welding softening of fitting and pipe surfaces to be welded is obtained by means of a heating element embedded in the fitting which remain between welded joints 3.12.2 extrusion welding welding process in which an extruder

35、unit with a melting chamber gives the extruded material required by the thickness and shape of the joint. Hot air or inert gas heats simultaneously the parent material 3.12.3 heated tool welding welding process in which the joint surfaces are adequately heated by exposure, through direct contact wit

36、h heated elements and are welded under pressure, which includes butt fusion welding (also called hot plate welding, platen welding or mirror welding) and socket fusion welding 3.12.4 heated wedge welding process in which the lining membrane welded is gripped by rollers which guide and propel the wel

37、ding machine which uses either hot gas to heat the lining membrane and the wedge to effect the weld or electrically heated wedge to heat the lining membrane in the area being welded BS EN 13067:2012EN 13067:2012 (E) 8 3.12.5 high-speed nozzle welding process in which the welding rod is suitably guid

38、ed and pre-heated and the nozzle tip is provided with a profiled area to apply the welding pressure 3.12.6 hot gas welding welding process in which the materials to be unified are softened by hot air or inert gas and are pressed together 3.12.7 round nozzle welding process in which the pressure is a

39、pplied via the welding rod or a suitable attachment such as a pressure roller 3.12.8 solvent welding softening of fitting and pipe surfaces, by means of a solvent contained in the cement Note 1 to entry: After suitable cure time, the solvent dries leaving the parent material in the interface between

40、 welded joints. 3.13 welding Procedure Specification WPS document providing in detail the required variables for a specific application to assure repeatability 3.14 welding record sheet document recording in detail the variables used during the practical test 3.15 welder person making a welded assem

41、bly by any process, whose manual skill and knowledge are two of the determining factors influencing the quality of the welded joint, or person performing a welding operation by means of mechanical or automatic equipment 4 Admission to the qualification tests Only welders whose training and/or for wh

42、ose previous activities show that they are likely to pass the planned test may be admitted. As a rule this is the case if one of the following conditions is met: completed apprenticeship as plastics fabricator; at least two years experience as a plastics welder confirmed by manufacturers declaration

43、; completion of both a technical and practical training course in preparation for the plastic welders qualification test. An example of a suitable training course is defined in Entry 1 in the Bibliography or may be identified in national standards. BS EN 13067:2012EN 13067:2012 (E) 9 5 Testing of sk

44、ill and knowledge 5.1 General During the qualification test, the welder shall demonstrate his practical skill according to 5.2 and his theoretical knowledge according to 5.3. 5.2 Practical test This test is carried out under the supervision of the PWE or Invigilator. The welder shall complete the te

45、st piece specified by the required sub-group in Table 1 or Table 2 in accordance with the relevant WPS. All welding equipment, materials and documents necessary to complete the test piece shall be available to the welder. All welding shall be performed in a horizontal position. The time taken by the

46、 welder to complete the test piece shall correspond to that taken under production conditions. 5.3 Theoretical test This test is carried out under the supervision of the PWE or Invigilator. The welders knowledge of the practical working rules for skilful and safe working shall be evaluated in the th

47、eoretical test. The welder shall answer a minimum of 20 multiple-choice questions relevant to the qualification testing. Completion of the theoretical test shall not exceed one hour, be continuous without access to teaching aids. The questions shall cover the following subjects, as appropriate: rule

48、s for welding of thermoplastics to which the test is designed to apply, meaning of the welding signs and symbols of the range of work; operation and control of the welding equipment; welding processes; knowledge concerning on-site welding; correct preparation of the work pieces for welding; knowledg

49、e concerning the characteristics of thermoplastics within the sub-groups; knowledge concerning the characteristics of solvents / cements within the relevant sub-group; preventing and correcting faults when making welds; knowledge concerning the types of imperfections for the applied welding process(es); knowledge concerning the WPS and welding record sheet; BS EN 13067:2012EN 13067:2012 (E) 10 awareness of the consequences of misapplying weldin