1、Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system componentsPart 9: Pressure relief valve (PRV)BS ISO 126199:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017Road vehicles Compressed gaseous hydrogen (CGH2) and h
2、ydrogen/natural gas blends fuel system components Part 9: Pressure relief valve (PRV)Vhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 9: Soupape de surpressionINTERNATIONAL STANDARDISO12619-9First edition2017-08R
3、eference numberISO 12619-9:2017(E)National forewordThis British Standard is the UK implementation of ISO 126199:2017.The UK participation in its preparation was entrusted to Technical Committee GSE/40, Gas supply equipment for natural gas vehicles.A list of organizations represented on this committe
4、e 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 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 94493 2ICS 43.060.40C
5、ompliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS ISO 126199:20
6、17 ISO 2017Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components Part 9: Pressure relief valve (PRV)Vhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 9: Soupape de
7、 surpressionINTERNATIONAL STANDARDISO12619-9First edition2017-08Reference numberISO 12619-9:2017(E)BS ISO 126199:2017ISO 12619-9:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publi
8、cation may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the count
9、ry of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 126199:2017ISO 12619-9:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerlan
10、dAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requeste
11、d from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgISO 12619-9:2017(E)Foreword iv1 Scope . 12 Normative refere
12、nces 13 Terms and definitions . 14 Marking 25 Construction and assembly . 26 Tests . 26.1 Applicability 26.2 Hydrostatic strength 36.3 Leakage 36.4 Continued operation 36.5 Operational test 46.5.1 General 46.5.2 Test procedure . 4Bibliography 5 ISO 2017 All rights reserved iiiContents PageBS ISO 126
13、199:2017ISO 12619-9:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested
14、in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commi
15、ssion (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 sh
16、ould be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible fo
17、r identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used in this document is information given for th
18、e convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in t
19、he Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fuels.A list of all parts in the ISO 12619 series can be found on the ISO websit
20、e.iv ISO 2017 All rights reservedBS ISO 126199:2017ISO 12619-9:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technic
21、al 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 organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely wi
22、th 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
23、for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent r
24、ights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents).Any trade name used i
25、n this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the Wor
26、ld Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fuels.A list of all parts in the ISO
27、12619 series can be found on the ISO website.iv ISO 2017 All rights reserved INTERNATIONAL STANDARD ISO 12619-9:2017(E)Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components Part 9: Pressure relief valve (PRV)1 ScopeThis document specifies tests and r
28、equirements for the pressure relief valve (PRV), a compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system component intended for use on the types of motor vehicles defined in ISO 3833.It is applicable to vehicles using CGH2in accordance with ISO 14687-1 or ISO 14687-2 and hydr
29、ogen/natural gas blend using natural gas in accordance with ISO 15403-1 and ISO/TR 15403-2. It is not applicable to the following:a) liquefied hydrogen (LH2) fuel system components;b) fuel containers;c) stationary gas engines;d) container mounting hardware;e) electronic fuel management;f) refuelling
30、 receptacles;g) fuel cell vehicles.NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this document and tested according to the appropriate functional tests.NOTE 2 All references to pressure in this document are considered ga
31、uge pressures unless otherwise specified.2 Normative referencesThe 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 editi
32、on of the referenced document (including any amendments) applies.ISO 12619-1, Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components Part 1: General requirements and definitionsISO 12619-2, Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/
33、natural gas blend fuel system components Part 2: Performance and general test methods3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 12619-1 and the following apply. ISO 2017 All rights reserved 1BS ISO 126199:2017ISO 12619-9:2017(E)ISO and IEC mainta
34、in terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp3.1set pressurepressure at which it is intended that the PRV opens4 MarkingMark
35、ing of the component shall provide sufficient information to allow the following to be traced:a) the manufacturers or agents name, trademark or symbol;b) the model designation (part number);c) the working pressure and temperature range.The following additional markings are recommended: the direction
36、 of flow (when necessary for correct installation); the type of fuel; the electrical ratings (if applicable); the symbol of the certification agency; the type approval number; the serial number or date code; a reference to this document, i.e. ISO 12619-9:2017.NOTE This information can be provided by
37、 a suitable identification code on at least one part of the component when it consists of more than one part.5 Construction and assemblyThe PRV shall comply with the applicable provisions of ISO 12619-1 and ISO 12619-2 and with the tests specified in Clause 6. Tolerances should follow the specificat
38、ions of ISO 12619-2.The PRV may be integrated with other components. The other components shall not interfere with the operation/activation of the PRV.6 Tests6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.2 ISO 2017 All rights reservedBS ISO 126199:2017ISO 12619-9:201
39、7(E)ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp3.1set pressurepressure at which it is intended that the
40、PRV opens4 MarkingMarking of the component shall provide sufficient information to allow the following to be traced:a) the manufacturers or agents name, trademark or symbol;b) the model designation (part number);c) the working pressure and temperature range.The following additional markings are reco
41、mmended: the direction of flow (when necessary for correct installation); the type of fuel; the electrical ratings (if applicable); the symbol of the certification agency; the type approval number; the serial number or date code; a reference to this document, i.e. ISO 12619-9:2017.NOTE This informat
42、ion can be provided by a suitable identification code on at least one part of the component when it consists of more than one part.5 Construction and assemblyThe PRV shall comply with the applicable provisions of ISO 12619-1 and ISO 12619-2 and with the tests specified in Clause 6. Tolerances should
43、 follow the specifications of ISO 12619-2.The PRV may be integrated with other components. The other components shall not interfere with the operation/activation of the PRV.6 Tests6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.2 ISO 2017 All rights reserved ISO 12619-
44、9:2017(E)Table 1 Applicable testsTest ApplicableTest procedure as required by ISO 12619-2Specific test requirements of this documentHydrostatic strength X X (see 6.2)Leakage X X (see 6.3)Excess torque resistance X X Bending moment X X Continued operation X X (see 6.4)Operational X X (see 6.5)Corrosi
45、on resistance X X Oxygen ageing X X Ozone ageing X X N-pentane X X Heat ageing X X Automotive fluid exposure X X Non-metallic material immersion X X Non-metallic material compatibility to hydrogenX X Ultraviolet resistance of external surfacesX XVibration resistance X X Brass material compatibility
46、X X 6.2 Hydrostatic strengthTest the PRV according to the procedure for testing hydrostatic strength specified in ISO 12619-2 to at least 2,5 times its working pressure.For the purposes of this test, the PRVs mechanism shall be removed and its orifice blocked.6.3 LeakageTest the PRV at 40 C or 20 C,
47、 room temperature and 85 C or 120 C (if required by the operating conditions), at working pressure.6.4 Continued operationThe PRV shall be capable of withstanding 600 cycles of operation when tested according to the provisions of the continued operation test procedure given in ISO 12619-2 and the fo
48、llowing:a) a test cycle consists of, first, pressurizing the PRV to the set pressure. This action shall cause the PRV to open and vent. Once the valve is venting, reduce the inlet pressure; when the PRV re-seats, the cycle is finished;b) after 600 cycles, test the PRV for leakage at (20 5) C at its
49、working pressure. Cycle time shall be within a period of (10 2) s. ISO 2017 All rights reserved 3BS ISO 126199:2017ISO 12619-9:2017(E)6.5 Operational test6.5.1 GeneralVerify the opening and re-seating pressures of the PRV. The opening pressure shall be equal to the set pressure 5 % at 20 C, 40 C or 20 C (as applicable) and 85 C or 120 C (as required by the operating conditions).6.5.2 Test procedureThree randomly selected samples
