1、BSI Standards PublicationBS ISO 15500-15:2015Road vehicles Compressednatural gas (CNG) fuel systemcomponentsPart 15: Gas-tight housing and ventilationhoseBS ISO 15500-15:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO15500-15:2015.The UK participation in i
2、ts preparation was entrusted to TechnicalCommittee GSE/40, Gas supply equipment for natural gas vehicles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are
3、responsible for its correctapplication. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 88533 4ICS 43.060.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStand
4、ards Policy and Strategy Committee on 30 November 2015.Amendments/corrigenda issued since publicationDateText affectedBS ISO 15500-15:2015 ISO 2015Road vehicles Compressed natural gas (CNG) fuel system components Part 15: Gas-tight housing and ventilation hoseVhicules routiers Composants des systmes
5、 de combustible gaz naturel comprim (GNC) Partie 15: Compartiment tanche pour gaz et tuyaux de ventilationINTERNATIONAL STANDARDISO15500-15Second edition2015-10-15Reference numberISO 15500-15:2015(E)BS ISO 15500-15:2015ISO 15500-15:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT I
6、SO 2015, Published in SwitzerlandAll 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 permis
7、sion. Permission can be requested 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.orgBS ISO 15500-15:2015ISO 155
8、00-15:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Marking 25 Construction and assembly . 26 Tests . 26.1 Applicability 26.2 Leakage 36.2.1 External leakage . 36.2.2 External Leakage, of pressure retaining ventilation passages . 36.2.3 Venting ability and pressur
9、e retention . 46.3 Pull-off 4Bibliography 5 ISO 2015 All rights reserved iiiContents PageBS ISO 15500-15:2015ISO 15500-15:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internat
10、ional 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 organizations, governmental and non-governmental, in liaison with I
11、SO, 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, Pa
12、rt 1. In particular the different approval criteria needed 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
13、elements of this document may be the subject of patent rights. 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 rec
14、eived (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs ad
15、herence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fuels.This second edition cancels and replaces t
16、he first edition (ISO 15500-15:2001), which has been technically revised.ISO 15500 consists of the following parts, under the general title Road vehicles Compressed natural gas (CNG) fuel system components : Part 1: General requirements and definitions Part 2: Performance and general test methods Pa
17、rt 3: Check valve Part 4: Manual valve Part 5: Manual cylinder valve Part 6: Automatic valve Part 7: Gas injector Part 8: Pressure indicator Part 9: Pressure regulator Part 10: Gas-flow adjuster Part 11: Gas/air mixer Part 12: Pressure relief valve (PRV) Part 13: Pressure relief device (PRD)iv ISO 2
18、015 All rights reservedBS ISO 15500-15:2015ISO 15500-15:2015(E) Part 14: Excess flow valve Part 15: Gas-tight housing and ventilation hose Part 16: Rigid fuel line in stainless steel Part 17: Flexible fuel line Part 18: Filter Part 19: Fittings Part 20: Rigid fuel line in material other than stainle
19、ss steel ISO 2015 All rights reserved vBS ISO 15500-15:2015BS ISO 15500-15:2015Road vehicles Compressed natural gas (CNG) fuel system components Part 15: Gas-tight housing and ventilation hose1 ScopeThis part of ISO 15500 specifies tests and requirements for the gas-tight housing and ventilation hos
20、e, compressed natural gas fuel system components intended for use on the types of motor vehicles defined in ISO 3833.This part of ISO 15500 is applicable to vehicles using natural gas in accordance with ISO 15403-1 (mono-fuel, bi-fuel, or dual-fuel applications). It is not applicable to the followin
21、g:a) liquefied natural gas (LNG) fuel system components located upstream of, and including, the vaporizer;b) fuel containers;c) stationary gas engines;d) container mounting hardware;e) electronic fuel management;f) refuelling receptacles.NOTE 1 It is recognized that miscellaneous components not spec
22、ifically covered herein can be examined to meet the criteria of this part of ISO 15500 and tested according to the appropriate functional tests.NOTE 2 All references to pressure in this part of ISO 15500 are to be considered gauge pressures unless otherwise specified.NOTE 3 This part of ISO 15500 is
23、 based upon a service pressure for natural gas as a fuel of 20 MPa (200 bar1) settled at 15 C. Other service pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, a 25 MPa (250 bar) service pressure system will require pressures to be multiplied by 1
24、,25.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any am
25、endments) applies.ISO 15500-1, Road vehicles Compressed natural gas (CNG) fuel system components Part 1: General requirements and definitionsISO 15500-2, Road vehicles Compressed natural gas (CNG) fuel system components Part 2: Performance and general test methods3 Terms and definitionsFor the purpo
26、ses of this document, the terms and definitions given in ISO 15500-1 apply.1) 1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2.INTERNATIONAL STANDARD ISO 15500-15:2015(E) ISO 2015 All rights reserved 1BS ISO 15500-15:2015ISO 15500-15:2015(E)4 MarkingMarking of the component shall provide sufficient informat
27、ion to allow the following to be traced:a) the manufacturers or agents name, trademark or symbol;b) the model designation (part number);c) the temperature range.The following additional markings are recommended: the direction of flow (when necessary for correct installation); the type of fuel; elect
28、rical ratings (if applicable); the symbol of the certification agency; the type approval number; the serial number or date code; a reference to this part of ISO 15500.NOTE This information can be provided by a suitable identification code on at least one part of the component when it consists of mor
29、e than one part.5 Construction and assemblyThe gas-tight housing and ventilation hose shall comply with the applicable provisions of ISO 15500-1 and ISO 15500-2, and with the tests specified in Clause 6.The gas-tight housing and ventilation hose are intended to contain and vent to a safe place perme
30、ation gas and small leaks from the primary pressure retaining components.The gas-tight housing shall be assembled in such a way that the function of the pressure relief device or devices (PRD) will not be affected.6 Tests6.1 ApplicabilityThe tests required to be carried out are indicated in Table 1.
31、2 ISO 2015 All rights reservedBS ISO 15500-15:2015ISO 15500-15:2015(E)Table 1 Tests applicableTest Applicable Test procedure as required by ISO 15500-2Specific test requirements of this part of ISO 15500Leakage X X X (see 6.2)Excess torque resistance XaXBending momentContinued operationCorrosion res
32、istance XbXOxygen ageing X XOzone ageing X XHeat Ageing X XAutomotive Fluids X XElectrical over-voltagesNon-metallic synthetic immersion X XVibration resistance XaXBrass material compatibilityPull-off X X (see 6.3)aApplicable only to rigid components.bApplicable to metallic parts or components.6.2 L
33、eakageTest the gas-tight housing according to the procedure for leakage specified in ISO 15500-2, at the temperatures and pressures given in Table 2.Table 2 Test temperatures and pressuresTemperature CPressure MPa bar-40 or -20 (as applicable) 0,05 0,520 0,05 0,585 0,05 0,56.2.1 External leakageThis
34、 external leakage test is intended for ventilation hoses and gas-tight housings. Ventilation hoses and gas-tight housings shall be leak-tight when tested at the pressures and temperatures given in Table 2. Atmospheric passages and other connections shall be connected or plugged as recommended by the
35、 manufacturer for normal service.6.2.2 External Leakage, of pressure retaining ventilation passagesThis external leakage test is intended for ventilation passages of pressure retaining components. Ventilation passages of pressure retaining components shall meet the requirements of the following test
36、s.6.2.2.1 Plug the ventilation passage outlets and pressurize the ventilation passages to the maximum pressure the vent passage is expected to be exposed to in service as specified by the manufacturer. The component shall be leak-tight other than through the intended vent passage. ISO 2015 All right
37、s reserved 3BS ISO 15500-15:2015ISO 15500-15:2015(E)6.2.2.2 Allow the vent passage to vent normally. Remove or damage the worst case high pressure sealing component and pressurize the relevant high pressure portions of the component to a high enough pressure to create 0,5 g/s nitrogen leak, but not
38、more than service pressure. The component shall be leak-tight other than through the intended vent passage.6.2.3 Venting ability and pressure retentionThe venting ability and pressure retention test is intended for gas-tight housings and ventilation hoses. Install the component as recommended by the
39、 manufacturer for normal service, including typical components between the high pressure component and the final atmosphere port. Apply a 0,5 g/s nitrogen or dry air source to the interior or inlet of the component to simulate a pressure retaining component leak.The gas-tight housing or ventilation
40、hose shall not retain more than 50 kPa pressure during leakage of the high pressure component.6.3 Pull-offTest the ventilation hose, attached by a suitable connection device to the gas-tight housing and to any other connecting point used, according to the following procedure and acceptance criterion
41、.Place the test specimen in an appropriate test fixture, then statically apply a tensile load along the ventilation hose axis at a maximum rate of 100 N/min until the ventilation hose separates from its connecting points.The force required to pull the ventilation hose apart from its connecting point
42、s shall be not less than 100 N.4 ISO 2015 All rights reservedBS ISO 15500-15:2015ISO 15500-15:2015(E)Bibliography1 ISO 3833, Road vehicles Types Terms and definitions2 ISO 15403-1, Natural gas Natural gas for use as a compressed fuel for vehicles Part 1: Designation of the quality ISO 2015 All right
43、s reserved 5BS ISO 15500-15:2015ISO 15500-15:2015(E) ISO 2015 All rights reservedICS 43.060.40Price based on 5 pagesThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorpor
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