kSIST FprEN IEC 63341-2:2025
(Main)Railway applications - Hydrogen and fuel cell systems for rolling stock - Part 2: Hydrogen fuel system
Railway applications - Hydrogen and fuel cell systems for rolling stock - Part 2: Hydrogen fuel system
IEC 63341-2:2025 applies to on-board hydrogen fuel systems (HFSs) used to supply the fuel cells for the traction power and the auxiliaries supply of railway vehicles (such as hybrid vehicles as defined in IEC 62864-1).
This document applies to hydrogen storage in gaseous form. Other means of storage (such as liquid, liquid cryo-compressed, metal hydrides) are not covered in this document.
This document applies to any rolling stock type (e.g. light rail vehicles, tramways, streetcars, metros, commuter trains, regional trains, high speed trains, locomotives).
This document addresses the on-board mechanical, fluidic and electrical interfaces between the on-board hydrogen fuel system and fuelling station. The fuelling station, fuelling protocol and communication for the fuelling protocol are not in the scope of this document.
This document defines:
– the scope of supply of hydrogen fuel system and the description of the interfaces with sub systems internal and external to the rolling stock such as fuel cell power system, fuelling station systems;
– the environmental constraints;
– the design requirements to support HFS compliance with railway applications;
– the safety and reliability requirements to design and install the HFS for railway applications;
– the marking and labelling requirements;
– the requirements related to storage, transportation, installation and maintenance;
– the validation (type, routine and investigation tests) requirements.
Bahnanwendungen - Wasserstoff und Brennstoffzellen-Energiesysteme für Bahnfahrzeuge - Wasserstoff Energiesystem
Applications ferroviaires – Systèmes à hydrogène et à pile à combustible pour le matériel roulant – Partie 2: Système à hydrogène
L'IEC 63341-2:2025 s'applique aux systèmes à hydrogène (HFS) embarqués, qui sont utilisés pour alimenter les piles à combustible assurant la puissance de traction et l'alimentation auxiliaire des véhicules ferroviaires (tels que les véhicules hybrides conformément à l'IEC 62864-1).
Le présent document s'applique au stockage de l'hydrogène sous forme gazeuse. Les autres moyens de stockage (liquides, cryocomprimés liquides, hydrures métalliques, par exemple) ne sont pas couverts dans le présent document.
Le présent document s'applique à tout type de matériel roulant (par exemple, véhicules ferroviaires légers, tramways, métros, trains de banlieue, trains régionaux, trains à grande vitesse, locomotives).
Le présent document traite des interfaces mécaniques, fluidiques et électriques embarquées entre le système à hydrogène embarqué et la station de ravitaillement. La station de ravitaillement, le protocole de ravitaillement et la communication autour du protocole de ravitaillement ne relèvent pas du domaine d'application du présent document.
Le présent document définit:
– le contrat de fourniture du système à hydrogène et la description des interfaces avec les sous systèmes internes et externes au matériel roulant, tels que le système à pile à combustible ou les systèmes de la station de ravitaillement;
– les contraintes environnementales;
– les exigences de conception visant à assurer la conformité du HFS pour les applications ferroviaires;
– les exigences de sécurité et de fiabilité concernant la conception et l'installation du HFS destiné aux applications ferroviaires;
– les exigences relatives au marquage et à l'étiquetage;
– les exigences relatives au stockage, au transport, à l'installation et à la maintenance;
– les exigences de validation (essais de type, essais individuels de série et essais d'investigation).
Železniške naprave - Vozna sredstva - Sistemi gorivnih celic za vozna sredstva - 2. del: Sistem za shranjevanje vodika
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN IEC 63341-2:2024
01-maj-2024
Železniške naprave - Vozna sredstva - Sistemi gorivnih celic za vozna sredstva - 2.
del: Sistem za shranjevanje vodika
Railway applications - Rolling stock - Fuel cell systems for propulsion - Part 2: Hydrogen
storage system
Ta slovenski standard je istoveten z: prEN IEC 63341-2:2024
ICS:
27.070 Gorilne celice Fuel cells
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
oSIST prEN IEC 63341-2:2024 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN IEC 63341-2:2024
oSIST prEN IEC 63341-2:2024
9/3050/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63341-2 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-03-08 2024-05-31
SUPERSEDES DOCUMENTS:
9/2923/CD, 9/2963A/CC
IEC TC 9 : ELECTRICAL EQUIPMENT AND SYSTEMS FOR RAILWAYS
SECRETARIAT: SECRETARY:
France Mr Denis MIGLIANICO
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 105
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for Vote
(CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries” clauses to
be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for submitting ISC clauses.
(SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Railway applications – Hydrogen and fuel cell systems for rolling stock – Part 2: Hydrogen fuel system
PROPOSED STABILITY DATE: 2028
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.
oSIST prEN IEC 63341-2:2024
9/3050/CDV – 2 – IEC CDV 63341-2 © IEC 2024
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 11
2 Normative references . 11
3 Terms, definitions and abbreviated terms . 14
3.1 Terms and definitions . 14
3.2 Abbreviations . 21
4 Hydrogen fuel system description . 23
4.1 Overview. 23
4.2 Compressed hydrogen storage system module (CHSS module) . 24
4.3 Hydrogen handling system (HHS) . 24
4.4 On-board refuelling interface . 25
4.5 Fuel, purge and vent lines . 25
4.6 Monitoring and Control System (MCS) . 25
4.7 Safety monitoring devices (optional) . 26
5 Environmental requirements . 26
5.1 General . 26
5.2 Ambient air temperature . 26
5.3 Humidity . 26
5.4 Altitude . 26
5.5 Air movement, rain, snow, hail and solar radiation . 27
5.6 Atmosphere corrosivity & pollution degree . 27
5.7 Other constraints from the environment . 27
6 Interface requirements . 27
6.1 General . 27
6.2 Fluidic hydrogen interfaces . 27
6.2.1 Hydrogen supply from HHS to FCPS. 27
6.2.2 Fluidic interface with refilling station . 28
6.2.3 Purging fluidic interfaces . 28
6.2.4 Discharge of hydrogen to the atmosphere in case of fire . 29
6.2.5 Discharge of hydrogen to the atmosphere in case of overpressure . 30
6.3 Electrical hardwire interfaces . 30
6.4 Communication interfaces . 30
6.4.1 Interface with other on-board controllers . 30
6.4.2 Interface with refilling Station (optional) . 31
6.4.3 Interface with maintenance tools (optional) . 31
7 Performance requirements of the HFS . 32
8 Design requirements for hydrogen fuel system . 33
8.1 General . 33
8.2 Hydrogen quality . 33
8.3 Pressure ranges . 33
8.3.1 High-pressure section . 33
8.3.2 Medium pressure section . 34
8.4 Hydrogen flow rate . 36
8.5 Hydrogen temperature . 36
8.6 Hydrogen compatibility of materials. 36
oSIST prEN IEC 63341-2:2024
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8.7 Electrical & network . 36
8.7.1 General . 36
8.7.2 General electrical principles. 36
8.8 Mechanical . 37
8.8.1 Mechanical integration of the HFS . 37
8.8.2 Structural design . 38
8.8.3 Bolted assemblies . 38
8.8.4 Lifting points . 38
8.8.5 Degree of protection . 38
8.8.6 Shock & vibration. 38
8.9 Fire protection . 38
8.10 Lifetime and refilling & duty cycles . 39
8.11 Eco-design . 39
8.12 Storage and transportation . 40
9 Design requirements for specific HFS sub-assemblies and components . 40
9.1 Introduction . 40
9.2 Methodology . 40
9.3 Compressed hydrogen storage system (CHSS) . 41
9.3.1 Hydrogen containers . 41
9.3.2 Mandatory fuel components . 41
9.3.3 Optional fuel components . 41
9.3.4 Structural frame of CHSS module . 42
9.4 Hydrogen handling system . 43
9.4.1 Introduction . 43
9.4.2 Mandatory fuel components . 43
9.4.3 Optional fuel components . 43
9.5 Rigid and flexible fuel and vent lines . 43
9.6 Hydrogen Refuelling Interface . 44
9.6.1 On-board hydrogen receptacle . 44
9.6.2 Optional refuelling components . 44
9.6.3 Refuelling communication devices (optional) . 44
9.7 General electrical principles . 45
9.7.1 Electronic devices . 45
9.7.2 Cabling & connectors . 45
9.7.3 EMC requirements . 45
9.8 Monitoring and Control System (MCS) . 45
9.8.1 Hardware . 45
9.8.2 Software . 45
9.9 Monitoring devices (optional) . 46
10 Control and monitoring requirements . 46
11 RAMS requirements. 46
11.1 Reliability & availability . 46
11.2 Safety . 47
11.2.1 Methodology . 47
11.2.2 Hazard identification . 48
11.2.3 Explosive atmosphere management. 48
11.2.4 Safety of refuelling process . 50
11.3 Maintenance . 51
11.3.1 Maintenance requirements . 51
oSIST prEN IEC 63341-2:2024
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11.3.2 Maintenance documentation . 51
11.3.3 Flushing & inertizing processes . 52
11.3.4 Leak testing . 53
12 Marking and labelling . 54
12.1 Saf
...
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