BS ISO 23273:2013 BSl Standards Publication Licensedcopy:ImperialCollege,ImperialCollegeLondon,Versioncorrec Fuel cell road vehicles Safety specifications Protection against hydrogen hazards for vehicles fuelled with compressed hydrogen bsi. ..making excellence a habit. BRITISH STANDARD BSISO 23273:2013 National foreword This British Standard is the UK implementation of IS0 23273:2013.It supersedes BS ISO 23273-2:2006 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PEL/69, Electric vehicles. A list of organizations represented on this committee can be obtained on request to its secretary. 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 2013.Published by BSI Standards Limited 2013 ISBN 978 0580833878 ICS 43.120 Compliance with a British Standard cannot confer immunityfrom legal obligations. This British Standard was published under the authority of the StandardsPolicyandStrategyCommitteeon31October2013. Amendments issued since publication Date Textaffected BS ISO 23273:2013 INTERNATIONAL ISO STANDARD 23273 First edition 2013-06-15 Fuel cell road vehicles - Safety specifications Protection against hydrogen hazards for vehicles fuelled with compressed hydrogen Vehicules routiers alimentésparpilea combustible-Specifications de securiteProtectioncontre lesdangers de I'hydrogene pour les vehiculesutilisantdeIhydrogenecomprimé Referencenumber IS0 23273:2013(E) TSO @ISO2013 BSISO23273:2013 IS023273:2013(E) Licensed copy:Imperial College, COPYRIGHTPROTECTEDDOCUMENT @IS02013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56·CH-1211Geneva20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland i @ IS0 2013 - All rights reserved BSISO 23273:2013 IS023273:2013(E) Contents Page Foreword ..iv 1 Scope .1 2 Normativereferences 3 Termsand definitions 4 Environmentalandoperationalconditions ..3 5 Design and performance requirements ofthefuel system .3 5.1 .3 General 5.2 .3 Components 5.3 Locationandinstallationofcomponents 4 5.4 Discharges. 4 6 Test methods for determining flammability around the vehicle from fuel discharges 4 7 Complementary or alternative approach to verify hydrogen-related safety requirements..4 7.1 General 4 .5 7.2 Hydrogen-related components andsystems 7.3 Integration of the hydrogen-related components and systems into the FCV .5 7.4 Verification of the safety concept ..5 .5 8 Fuelling requirements 8.1 General .5 8.2 Fuelling inlet .5 Bibliography 6 Licensedcopy:ImperialCollege, IS0 2013-All rights reserved ili BS ISO 23273:2013 IS0 23273:2013(E) Foreword Iso (the International Organizationfor Standardization) is a worldwide federation ofnational standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out through Iso technical committees.Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International 6 organizations, governmental and non-governmental, in liaison with Iso, also take part in the work. Iso collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISo/IEc Directives, Part 1. In particular the different approval criteria needed for the different types of Iso documents should benoted.This document was drafted in accordancewith the se editorial rules of the ISO/IEC Directives, Part 2.www.iso.org/directives Att