1、Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system componentsPart 8: Pressure indicatorBS ISO 126198:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06 ISO 2017Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/n
2、atural gas blends fuel system components Part 8: Pressure indicatorVhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 8: Indicateur de pressionINTERNATIONAL STANDARDISO12619-8First edition2017-07Reference numberISO
3、 12619-8:2017(E)National forewordThis British Standard is the UK implementation of ISO 126198:2017.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 committee can be obtained
4、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 94526 7ICS 43.060.40Compliance with a B
5、ritish 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 126198:2017 ISO 2017Road ve
6、hicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components Part 8: Pressure indicatorVhicules routiers Composants des circuits dalimentation pour hydrogne gazeux comprim (CGH2) et mlanges de gaz naturel et hydrogne Partie 8: Indicateur de pressionINTERNATIONAL S
7、TANDARDISO12619-8First edition2017-07Reference numberISO 12619-8:2017(E)BS ISO 126198:2017ISO 12619-8:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or
8、 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 country of the requester.ISO cop
9、yright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 126198:2017ISO 12619-8:2017(E)ii ISO 2017 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in SwitzerlandAll rights reserved. Unles
10、s 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 requested from either ISO at the ad
11、dress 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 12619-8:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitio
12、ns . 14 Marking 25 Construction and assembly . 26 Tests . 26.1 Applicability 26.2 Hydrostatic strength 36.3 Leakage 36.4 Continued operation 36.5 Insulation resistance 46.6 Minimum operating voltage 4Bibliography 5 ISO 2017 All rights reserved iiiContents PageBS ISO 126198:2017ISO 12619-8:2017(E)For
13、ewordISO (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 in a subject for which a techn
14、ical 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 Commission (IEC) on all matters of
15、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 be noted. This document w
16、as 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 for identifying any or all such
17、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 the convenience of users and doe
18、s 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 the Technical Barriers to Trade
19、 (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 website.iv ISO 2017 All rights reser
20、vedBS ISO 126198:2017ISO 12619-8:2017(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 bod
21、y 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 with the International Electrote
22、chnical 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
23、 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 rights. ISO shall not be held r
24、esponsible 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 in this document is information
25、 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 World Trade Organization (WTO) pr
26、inciples 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 12619 series can be found on t
27、he ISO website.iv ISO 2017 All rights reserved INTERNATIONAL STANDARD ISO 12619-8:2017(E)Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components Part 8: Pressure indicator1 ScopeThis document specifies tests and requirements for the pressure indicator,
28、 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 hydrogen/natural gas blend using natural gas in acco
29、rdance 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 receptacles;g) fuel cell vehicles.NOTE 1 It is
30、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 gauge pressures unless otherwise specified.2 Norma
31、tive 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 edition of the referenced document (including any ame
32、ndments) applies.ISO 12619-1, Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components Part 1: General requirements and definitionsISO 12619-2:2014, Road vehicles Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components Pa
33、rt 2: Performance and general test methods3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 12619-1 apply. ISO 2017 All rights reserved 1BS ISO 126198:2017ISO 12619-8:2017(E)ISO and IEC maintain terminological databases for use in standardization at the
34、 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/ obp4 MarkingMarking of the component shall provide sufficient information to allow the following to be traced:a) the manufacturers or agents na
35、me, trademark or symbol;b) the model designation (part number);c) the working pressure or pressure and temperature range.The following additional markings are recommended: the direction of flow (when necessary for correct installation); the type of fuel; the electrical ratings (if applicable); the s
36、ymbol of the certification agency; the type approval number; the serial number or date code; a reference to this document, i.e. ISO 12619-8:2017.NOTE This information 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 Cons
37、truction and assembly5.1 Pressure transducers and gauges 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 specifications of ISO 12619-2.5.2 The pressure indicator shall be capable of displaying at least
38、1,5 times the service pressure.5.3 If the pressure indicator is a gauge, it shall be equipped with a shatter-proof lens and possess an external means of pressure relief. Potential release shall not be directed to the front of the gauge.6 Tests6.1 ApplicabilityThe tests required to be carried out are
39、 indicated in Table 1.2 ISO 2017 All rights reservedBS ISO 126198:2017ISO 12619-8:2017(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
40、 t t p :/ www .iso .org/ obp4 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 or pressure and temperature range.The followi
41、ng additional markings are recommended: 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
42、12619-8:2017.NOTE This information 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 assembly5.1 Pressure transducers and gauges shall comply with the applicable provisions of ISO 12619-1 and ISO 12619-2
43、and with the tests specified in Clause 6. Tolerances should follow the specifications of ISO 12619-2.5.2 The pressure indicator shall be capable of displaying at least 1,5 times the service pressure.5.3 If the pressure indicator is a gauge, it shall be equipped with a shatter-proof lens and possess
44、an external means of pressure relief. Potential release shall not be directed to the front of the gauge.6 Tests6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.2 ISO 2017 All rights reserved ISO 12619-8:2017(E)Table 1 Applicable testsTest ApplicableTest procedure as req
45、uired 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)Corrosion resistance X X Oxygen ageing X X Ozone ageing X X N-pentane X X Heat ageing X X Automotive
46、fluid exposure X X Electrical over-voltages XaX Non-metallic material immersion X X Non-metallic material compatibility to hydrogenX X Ultraviolet resistance of external surfacesX X Vibration resistance X X Brass material compatibility X X Insulation resistance Xa X (see 6.5)Minimum operating voltag
47、e Xa X (see 6.6)aApplicable only if the pressure indicator has an electrical or electronic component.6.2 Hydrostatic strengthTest the pressure indicator according to the procedure for testing hydrostatic strength specified in ISO 12619-2. The test pressure shall be 2,5 times the working pressure.6.3
48、 LeakageTest the pressure indicator at the temperatures and pressures given in Table 2.Table 2 Test temperatures and pressuresTemperature CPressure MPaFirst test Second test40 or 20 0,75 WP 0,025 WP20 0,025 WP1,5 WP85 or 120 0,05 WP6.4 Continued operation6.4.1 Test the pressure indicator in accordan
49、ce with the procedure for testing continued operation given in ISO 12619-2:2014, Clause 9 for 20 000 cycles; a cycle consists of pressurization to working pressure followed by depressurization to less than 0,5 times the working pressure. ISO 2017 All rights reserved 3BS ISO 126198:2017ISO 12619-8:2017(E)6.4.2 Perform the leakage test in accordance with 6.3.6.5 Insulation resistanceThis test is designed to check for a potential failu
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