Railway applications - Track - Aluminothermic welding of rails - Part 2: Qualification of aluminothermic welders, approval of contractors and acceptance of welds

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.

Bahnanwendungen - Oberbau - Aluminothermisches Schweißen von Schienen - Teil 2: Qualifizierung aluminothermischer Schweißer, Zertifizierung von Betrieben und Abnahme von Schweißungen

Dieses Dokument legt Anforderungen fest für:
- Zulassung von Ausbildungseinrichtungen, Prüfung und Erhaltung der Fähigkeiten von aluminothermischen Schweißern und Schweißausbildern. Sie gilt für aluminothermische Schweißverfahren entsprechend den Anforderungen in EN 14730-1. Sie verlangt, dass das System zur Ausbildung und Prüfung von Schweißern von dem Eisenbahnunternehmen zugelassen wird;
- Zulassung von aluminothermischen Schweißfachbetrieben. Sie gilt für Auftragnehmer, die aluminothermische Schweißverfahren entsprechend den Anforderungen in EN 14730-1 anwenden und Schweißer beschäftigen, die im Besitz eines gültigen Berechtigungsausweises für das Schweißen im Sinne von Abschnitt 4 dieses Dokuments sind;
- Endabnahme der von dem Eisenbahnunternehmen genehmigten aluminothermischen Prüfungen und aluminothermischen Schweißüberwacher. Sie umfasst keine früheren Schweißprüfungen durch den Schweißer oder andere.
Dieses Dokument ist für aluminothermische Schweißungen von Eisenbahnschienen anzuwenden, die in EN 13674 1 bis EN 13674 4 und EN 16771 enthalten sind.

Applications ferroviaires - Voie - Soudage des rails par aluminothermie - Partie 2 : Qualification des soudeurs par aluminothermie, agrément des entreprises et réception des soudures

Le présent document spécifie les exigences relatives à :
- l'agrément des établissements de formation, le test et le maintien des compétences des soudeurs et des formateurs en soudage par aluminothermie. Il s'applique aux procédés de soudage par aluminothermie satisfaisant aux exigences de l'EN 14730 1. Il nécessite l'approbation du système de formation et de test des soudeurs par l'autorité ferroviaire concernée ;
- l'agrément des prestataires de soudage par aluminothermie. Il s'applique aux prestataires qui utilisent des procédés de soudage par aluminothermie satisfaisant aux exigences de l'EN 14730 1 et qui emploient des soudeurs titulaires d'un permis de souder valide conformément à l'Article 4 du présent document ;
- la réception des vérifications finales des soudures par aluminothermie et des contrôleurs soudure par aluminothermie approuvés par l'autorité ferroviaire. Il ne couvre pas les vérifications des soudures antérieures réalisées par le soudeur ou d'autres personnes.
Le présent document s'applique également aux soudures par aluminothermie réalisées sur des rails tel que définis dans l'EN 13674 1 à l'EN 13674 4 et dans l'EN 16771.

Železniške naprave - Zgornji ustroj proge - Aluminotermično varjenje tirnic - 2. del: Kvalifikacije varilcev, cerificiranje izvajalcev in prevzem zvarov

General Information

Status
Published
Publication Date
27-Apr-2021
Withdrawal Date
30-Oct-2021
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
28-Apr-2021
Completion Date
28-Apr-2021

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SLOVENSKI STANDARD
SIST EN 14730-2:2021
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
SIST EN 14730-2:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 14730-2:2021

---------------------- Page: 2 ----------------------
SIST EN 14730-2:2021


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.

---------------------- Page: 3 ----------------------
SIST EN 14730-2:2021
EN 14730-2:2021 (E)
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

2

---------------------- Page: 4 ----------------------
SIST EN 14730-2:2021
EN 14730-2:2021 (E)
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.
3

---------------------- Page: 5 ----------------------
SIST EN 14730-2:2021
EN 14730-2:2021 (E)
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.
4

---------------------- Page: 6 ----------------------
SIST EN 14730-2:2021
EN 14730-2:2021 (E)
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.
5

---------------------- Page: 7 ----------------------
SIST EN 14730-2:2021
EN 14730-2:2021 (E)
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 accordance with Clause 5 of this document
3.10
welding trainer
qualified and certified trainer approved by the process supplier and authorised by the railway authority
3.11
responsible welding coordinator
person responsible and competent to perform welding coordination
3.12
examiner
person qualified by the process supplier and the railway authority to examine knowledge and skills of a
welder
6

---------------------- Page: 8 ----------------------
SIST EN 14730-2:2021
EN 14730-2:2021 (E)
4 Qualification of aluminothermic trainers and welders
4.1 Training requirements
The training and testing shall be conducted in a training centre. The process supplier shall provide the
process manual. The training shall be carried out in accordance with the supplier’s process manual. In
addition to the welding processes the initial training shall include as a minimum:
— basic safety items relating to the process;
— rail identification;
— gas equipment for preheating and cutting;
— abrasive wheels;
— portable powered plant;
— cause and effect of operating outside of the correct procedures;
— weld manufacture
...

SLOVENSKI STANDARD
oSIST prEN 14730-2:2019
01-julij-2019
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: prEN 14730-2
ICS:
25.160.10 Varilni postopki in varjenje Welding processes
93.100 Gradnja železnic Construction of railways
oSIST prEN 14730-2:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 14730-2:2019

---------------------- Page: 2 ----------------------
oSIST prEN 14730-2:2019


DRAFT
EUROPEAN STANDARD
prEN 14730-2
NORME EUROPÉENNE

EUROPÄISCHE NORM

May 2019
ICS 25.160.01; 25.160.10; 93.100 Will supersede 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 Schweiß¿en von Schienen - Teil 2: Qualifizierung
par aluminothermie, agrément des entreprises et aluminothermischer Schweiß¿er, Zertifizierung von
réception des soudures Betrieben und Abnahme von Schweiß¿ungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14730-2:2019 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
oSIST prEN 14730-2:2019
prEN 14730-2:2019 (E)
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

2

---------------------- Page: 4 ----------------------
oSIST prEN 14730-2:2019
prEN 14730-2:2019 (E)
European foreword
This document (prEN 14730-2:2019) has been prepared by Technical Committee CEN/TC 256 “Railway
applications”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede 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.
3

---------------------- Page: 5 ----------------------
oSIST prEN 14730-2:2019
prEN 14730-2:2019 (E)
Introduction
This document (prEN 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.
4

---------------------- Page: 6 ----------------------
oSIST prEN 14730-2:2019
prEN 14730-2:2019 (E)
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 standard;
— 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 Vignole railway rail 46 kg/m and
above, as contained in EN 13674-1.
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
ISO 3834-2, Quality requirements for fusion welding of metallic materials — Part 2: Comprehensive
quality requirements
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 http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
aluminothermic welder
a welder trained in an approved training centre in accordance with Clause 3.7 and holds a permit to
weld in accordance with Clause 4.6
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
5

---------------------- Page: 7 ----------------------
oSIST prEN 14730-2:2019
prEN 14730-2:2019 (E)
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
approved and authorised to carry out weld inspections by the railway authority
3.9
welding contractor/sub-contractor
company approved in accordance with section 5 of this standard
3.10
welding trainer
qualified and certified trainer approved by the process supplier and authorised by the railway authority
3.11
responsible welding coordinator
person responsible and competent to perform welding coordination
3.12
examiner
person qualified by the process supplier and the railway authority to examine knowledge and skills of a
welder
6

---------------------- Page: 8 ----------------------
oSIST prEN 14730-2:2019
prEN 14730-2:2019 (E)
4 Qualification of aluminothermic trainers and welders
4.1 Training requirements
The training and testing shall be conducted in a training centre. The process supplier shall provide the
process manual. The training shall be carried out in accordance with the supplier’s process manual. In
addition to the welding processes the initial training shall include as a minimum:
— basic safety items relating to the process;
— rail identification;
— gas equipment for preheating and cutting;
— abrasive wheels;
— portable powered plant;
— cause and effect of operating outside of the correct procedures;
— weld manufacture;
— basic weld profile grinding;
— visual weld inspection.
4.2 Duration of training
4.2.1 Initial training – no welding experience
The training course duration shall be a minimum of 4 weeks.
This applies to any individual that
...

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