1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58welding of rails Part 2: Qualification of aluminothermic welders, approval of contractors and accep
2、tance of weldsThe European Standard EN 14730-2:2006 has the status of a British StandardICS 25.160.10; 45.080Railway applications Track Aluminothermic BRITISH STANDARDBS EN14730-2:2006BS EN 14730-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Commi
3、ttee on 31 August 2006 BSI 2006ISBN 0 580 48705 9Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Sea
4、rch” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal ob
5、ligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No.
6、Date CommentsA list of organizations represented on this committee can be obtained on request to its secretary. present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and
7、European developments and promulgate them in the UK.National forewordThis British Standard is the official English language version of EN 14730-2:2006. The UK participation in its preparation was entrusted to Technical Committee RAE/2, Railway track and components, which has the responsibility to: a
8、id enquirers to understand the text;EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14730-2August 2006ICS 25.160.10; 45.080English VersionRailway applications - Track - Aluminothermic welding of rails -Part 2: Qualification of aluminothermic welders, approval ofcontractors and acceptance of weldsA
9、pplications ferroviaires - Voie - Soudage des rails paraluminothermie - Partie 2 : Qualification des soudeurs paraluminothermie, agrments des entreprises et rceptiondes souduresBahnanwendungen - Oberbau - AluminothermischesSchweien von Schienen - Teil 2: Qualifizierungaluminothermischer Schweier, Ze
10、rtifizierung vonBetrieben und Abnahme von SchweiungenThis European Standard was approved by CEN on 12 June 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alte
11、ration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by transla
12、tionunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary
13、, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue d
14、e Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14730-2:2006: EEN 14730-2:2006 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Qualification of alumino
15、thermic welders 5 4.1 Initial training and issue of a Diploma in Aluminothermic Welding of Rails.5 4.2 Permit to Weld6 4.3 Welder identification .7 4.4 Welder records.7 5 Approval of aluminothermic welding contractors7 5.1 General7 5.2 Quality management system8 5.3 Practical experience 8 5.4 Alumin
16、othermic welders .8 5.5 Training.8 5.6 Equipment 8 5.7 Purchase, management and control of consumables .8 5.8 Supervision 8 5.9 Weld inspection .8 5.10 Traceability.8 5.11 Audits9 6 Acceptance of aluminothermic welds .9 6.1 General9 6.2 Weld inspector qualification.9 6.3 Weld inspection .9 6.4 Geome
17、tric requirements .9 6.4.1 General9 6.4.2 Alignment and match of the weld collars10 6.4.3 Welded rail alignment11 6.5 Weld integrity .14 6.6 Documentation.15 Annex A (informative) Diploma in Aluminothermic Welding of Rails 16 Annex B (informative) Permit to Weld .17 Bibliography 18 EN 14730-2:2006 (
18、E) 3 Foreword This document (EN 14730-2:2006) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, 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, at
19、 the latest by February 2007, and conflicting national standards shall be withdrawn at the latest by February 2007. The purpose of this standard is to provide systems for successful delivery of aluminothermic welds in track. This standard covers: qualifications of aluminothermic welders; approval of
20、 aluminothermic welding contractors; Acceptance of welds. The minimum information requirements shown in Annex A and B are normative. The format is informative. The standard contains “alternative requirements“ in certain clauses, which enable a railway authority to select a position that will protect
21、 those principles which might be considered as “sovereign rights.“ When installing aluminothermic welds in track across Europe, railway authorities, process suppliers and contractors shall comply with rules, regulations and codes of practice pertaining to the country where the work is executed. Acco
22、rding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithua
23、nia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14730-2:2006 (E) 4 1 Scope This standard applies to aluminothermic welds made on Vignole rails of 46 kg/m and above as contained in EN 13674-1: This standard
24、specifies: the system for training, testing and maintaining the skills of aluminothermic welders. It applies to those aluminothermic welding processes compliant with the requirements of EN 14730-1 “Railway applications Track Aluminothermic welding of rails Part 1: Approval of welding processes“. It
25、requires that the system for training and testing of welders shall be approved by the relevant railway authority; the systems and requirements for the approval of aluminothermic welding contractors. It applies to those contractors using aluminothermic welding processes compliant with the requirement
26、s of EN 14730-1 “Railway applications Track Aluminothermic welding of rails Part 1: Approval of welding processes“ and who employ welders who are in possession of a valid Permit to Weld as defined in Clause 4 of this standard; the acceptance requirements for aluminothermic welds. It requires that we
27、ld inspectors are competent in aluminothermic weld inspection and are approved by the relevant railway authority. It covers the final inspection of aluminothermic welds for acceptance in track. It does not cover any previous inspections by welders or others. 2 Normative references The following refe
28、renced documents are indispensable for the application 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. EN 14730-1, Railway applications Track Aluminothermic welding of ra
29、ils Part 1: Approval of welding processes 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 railway authority either the railway regulator or the owner of a railway infrastructure or the custodian with a delegated responsibility for a railway i
30、nfrastructure 3.2 aluminothermic welder track operative trained and certified for the joining of rails by aluminothermic welding processes 3.3 welding contractor and welding subcontractor company accepted in accordance with the requirements of a railway authority to execute the production of alumino
31、thermic welds on that particular infrastructure 3.4 process supplier company which provides an approved aluminothermic welding process accepted in accordance with EN 14730-1 and which is approved by the railway authority to supply consumables and tools for the execution of aluminothermic welds EN 14
32、730-2:2006 (E) 5 3.5 employer company that employs aluminothermic welders who are approved by a process supplier and railway authority, or by the railway authority itself 3.6 process manual manual referred to and described in EN 14730-1, produced by the process supplier, identifying all the consumab
33、le materials and equipment used and the operating method to be followed for all steps of welding. The manual specifies the critical parameters of the welding process and their safe bounds 3.7 training establishment welder training organisation or centre approved by the railway authority 4 Qualificat
34、ion of aluminothermic welders 4.1 Initial training and issue of a Diploma in Aluminothermic Welding of Rails The initial training and testing shall be conducted in a training establishment. The process supplier shall provide the process manual and determine the duration of training and the minimum n
35、umber of welds to be made. The initial training shall be carried out in accordance with the suppliers process manual. In addition to the welding processes the initial training shall include as a minimum: basic safety items relating to the process; cause and effect of operating outside of the correct
36、 processes; rail identification; basic grinding; visual weld inspection. The training shall conclude with a practical and theoretical test or tests so designed to confirm the trainees ability to carry out the aluminothermic welding of rails in accordance with the requirements of that suppliers proce
37、ss manual. Upon the successful completion of training and testing the welder shall be issued with a Diploma in Aluminothermic Welding of Rails by the training establishment. The minimum information to be given on the diploma is: Full name of the welder; Date of birth; Date of examination; Number of
38、diploma; Process supplier; EN 14730-2:2006 (E) 6 Skill modules; Extra skills; Cutting method(s); Training establishment; Signature and name of the examiner. A specimen Diploma in Aluminothermic Welding of Rails showing the format is given in informative Annex A. The possession of the Diploma in Alum
39、inothermic Welding of Rails shall be a prerequisite to applying for the Permit to Weld. Diplomas in Aluminothermic Welding of Rails shall remain the property of the welder. 4.2 Permit to Weld The Permit to Weld shall remain the property of the railway authority. The validity of the Permit to Weld sh
40、all not exceed 5 years. The railway authority shall define any relevant conditions relating to the training, testing, re-training, re-testing and the validity and renewal of the Permit to Weld as well as the extension of the welders skill. The subjects to be included in the training for a Permit to
41、Weld shall be defined by the railway authority. The employer shall be responsible for ensuring that the training of aluminothermic welders to obtain a Permit to Weld is in accordance with the requirements of the railway authority. Upon successful completion of the requirements and demonstration of t
42、he necessary competencies, which shall include railway authority tests if required, the welder shall be issued with a Permit to Weld by the relevant railway authority upon receipt of the relevant qualifying information from the employer. The issue of the Permit to Weld shall be via the welders emplo
43、yer who shall maintain up to date records. The Permit to Weld shall include a unique identification relating to the particular welder and the employer, and shall contain as a minimum: Employer; Certificate number; Welders full name; Stamp number; Photo of the welder; Issue date; Expiry date; Line ca
44、tegories; Process supplier; Process; EN 14730-2:2006 (E) 7 Rail cutting method(s); Issuing railway authority; Signature of the issuing railway authority; Surrender conditions. In any instance of a welder changing employment to another welding contractor or employer, the railway authority shall issue
45、 a new Permit to Weld on the request, and receipt of relevant qualifying proof, from the new welding contractor or employer. The railway authority shall, at any time, withdraw the Permit to Weld upon evidence of poor performance by the welder and ask the employer to return it. The railway authority
46、shall also withdraw the Permit to Weld upon accepted documented notification from the employer. The employer shall return it to the railway authority. Upon request from the employer, the Permit to Weld shall be renewed by the railway authority as may be necessary to reflect the maintenance and/or ex
47、tension of the welders skills. Such renewal shall require receipt of the relevant qualifying information from the employer. A specimen of the Permit to Weld is shown in the informative Annex B. 4.3 Welder identification To identify the welder, each and every weld shall be marked by the stamp number
48、allocated in the Permit to Weld. 4.4 Welder records The contractor or sub-contractor shall maintain welder records, which shall form part of a quality management system and which shall include: Welder training and competences; Weld records; Number of welds produced in a given period; Number of welds
49、 rejected; Notified number of welds failed in service. 5 Approval of aluminothermic welding contractors 5.1 General The railway authority shall be responsible for specifying the requirements for the qualification of aluminothermic welding contractors. A certifying document shall be issued by the railway authority or the authorised body to contractors meeting the requirements. EN 14730-2:2006 (E) 8 5.2 Quality management
