EN 14730-2:2021

SLOVENSKI STANDARD
01-julij-2021
Nadomešča:
SIST EN 14730-2:2007
Železniške naprave - Zgornji ustroj proge - Aluminotermično varjenje tirnic - 2. del:
Kvalifikacije varilcev, cerificiranje izvajalcev in prevzem zvarov
Railway applications - Track - Aluminothermic welding of rails - Part 2: Qualification of
aluminothermic welders, approval of contractors and acceptance of welds
Bahnanwendungen - Oberbau - Aluminothermisches Schweißen von Schienen - Teil 2:
Qualifizierung aluminothermischer Schweißer, Zertifizierung von Betrieben und Abnahme
von Schweißungen
Applications ferroviaires - Voie - Soudage des rails par aluminothermie - Partie 2 :
Qualification des soudeurs par aluminothermie, agrément des entreprises et réception
des soudures
Ta slovenski standard je istoveten z: EN 14730-2:2021
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
93.100 Gradnja železnic Construction of railways
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 14730-2
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2021
EUROPÄISCHE NORM
ICS 25.160.01; 25.160.10; 93.100 Supersedes EN 14730-2:2006
English Version
Railway applications - Track - Aluminothermic welding of
rails - Part 2: Qualification of aluminothermic welders,
approval of contractors and acceptance of welds
Applications ferroviaires - Voie - Soudage des rails par Bahnanwendungen - Oberbau - Aluminothermisches
aluminothermie - Partie 2 : Qualification des soudeurs Schweißen von Schienen - Teil 2: Qualifizierung
par aluminothermie, agrément des entreprises et aluminothermischer Schweißer, Zertifizierung von
réception des soudures Betrieben und Abnahme von Schweißungen
This European Standard was approved by CEN on 30 November 2020.

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 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 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 Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14730-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Qualification of aluminothermic trainers and welders . 7
4.1 Training requirements . 7
4.2 Duration of training . 7
4.3 Examination . 7
4.4 Diploma. 8
4.5 Permit to Weld . 8
4.6 Welder identification . 9
4.7 Welder records . 9
5 Approval of Aluminothermic Welding Contractors . 9
5.1 General . 9
5.2 Welding Quality Management System . 9
5.3 Welding Coordination . 10
5.4 Aluminothermic Welders . 10
5.5 Training . 10
5.6 Equipment . 10
5.7 Purchase, Management and Control of Consumables . 10
5.8 Weld Inspection . 10
5.9 Traceability . 10
5.10 Audits . 11
6 Acceptance of Aluminothermic Welds . 11
6.1 General . 11
6.2 Weld Inspector . 11
6.3 Weld Inspection . 11
6.4 Geometric Requirements . 11
6.5 Weld Integrity . 17
6.6 Documentation . 17
Annex A (informative) Diploma in Aluminothermic Welding of Rails . 18
Annex B (informative) Permit to Weld . 19
Annex C (normative) Check list . 20
Bibliography . 21

European foreword
This document (EN 14730-2:2021) 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 the latest by October 2021, and conflicting national standards shall
be withdrawn at the latest by October 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 14730-2:2006.
This document is the second part of the EN 14730 series which provides systems for the successful
delivery of aluminothermic welds in track.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European 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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Introduction
This document (EN 14730-2) has five main topics:
a) approval of welding trainers;
b) approval of welding training centres;
c) qualifications of aluminothermic welders;
d) approval of aluminothermic welding contractors;
e) acceptance of welds.
This part of EN 14730 has been occasioned by a European Directive that will permit the freedom of an
open European market. To enable this perception to become a reality, it is essential a standard is in
place that satisfies the needs of the infrastructure owners or custodians and reflects the production
capabilities of the manufacturers in technical and quality terms.
1 Scope
This document specifies requirements for the:
— approval of training facilities, testing and maintaining the skills of aluminothermic welders and
welding trainers. It applies to those aluminothermic welding processes compliant with the
requirements of EN 14730-1. It requires that the system for training and testing of welders be
approved by the railway authority;
— approval of aluminothermic welding contractors. It applies to those contractors using
aluminothermic welding processes compliant with the requirements of EN 14730-1 and who
employ welders in the possession of a valid permit to weld as defined in Clause 4 of this document;
— acceptance of the final aluminothermic weld inspections and aluminothermic weld inspectors
approved by the railway authority. It does not cover any previous weld inspections by the welder
or others.
This document also applies to aluminothermic welds produced on railway rails as contained in
EN 13674-1 to EN 13674-4 and EN 16771.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 rails - Part 1: Approval of welding
processes
EN ISO 3834-2, Quality requirements for fusion welding of metallic materials - Part 2: Comprehensive
quality requirements (ISO 3834-2)
EN ISO 14731, Welding coordination - Tasks and responsibilities (ISO 14731)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
aluminothermic welder
welder trained in an approved training centre in accordance with 3.7 and holding a permit to weld in
accordance with 4.5
3.2
contractor
company approved by a railway authority to provide staff and equipment to execute the production of
aluminothermic welds
Note 1 to entry: This may include staff and machinery from within the railway authority.
3.3
employer
company that employs approved aluminothermic welders
3.4
process manual
manual produced by the process supplier, it identifies the consumables, equipment and operating
method to be followed for all steps of the critical welding parameters
Note 1 to entry: This manual is referred to and described in EN 14730-1.
3.5
process supplier
company that provides an approved aluminothermic welding process and is approved by the railway
authority to supply consumables and tools for the execution of aluminothermic welds
Note 1 to entry: This process is accepted in accordance with EN 14730-1.
3.6
railway authority
either the railway regulator or the owner of a railway infrastructure or the custodian with a delegated
responsibility for a railway infrastructure
3.7
training centre
welder training organisation or centre approved by the process supplier and by the railway authority
3.8
weld inspector
person approved and authorised to carry out weld inspections by the railway authority
3.9
welding contractor/sub-contractor
company approved in a
...