1、BS ISO 15501-1:2016Road vehicles Compressed natural gas (CNG) fuel systemsPart 1: Safety requirementsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 15501-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 15501-1:201
2、6. It supersedes BS ISO 15501-1:2012 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee GSE/40, Gas supply equipment for natural gas vehicles.A list of organizations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 on request to its secretary.This publicatio
3、n does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 90270 3 ICS 43.060.40 Compliance with a British Standard cannot confer immunity fr
4、om legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 15501-1:2016 ISO 2016Road vehicles Compressed natural gas (CNG) fuel system
5、s Part 1: Safety requirementsVhicules routiers Systmes dalimentation en gaz naturel comprim (GNC) Partie 1: Exigences de scuritINTERNATIONAL STANDARDISO15501-1Third edition2016-11-15Reference numberISO 15501-1:2016(E)BS ISO 15501-1:2016ISO 15501-1:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROT
6、ECTED DOCUMENT ISO 2016, 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 prio
7、r written permission. 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 1550
8、1-1:2016ISO 15501-1:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Requirements 34.1 Design . 34.1.1 General 34.1.2 Components . 44.2 Refuelling connection 54.2.1 General 54.2.2 Receptacle location 54.2.3 Receptacle mounting 54.2.4 Minimum receptacle
9、clearance . 64.3 Leakage control 64.4 Mounting of the cylinders 74.5 Heat protection . 84.6 Minimizing risk of gas ignition 84.7 Venting system 85 Instruction for use 96 Marking 9Annex A (informative) Technical solutions to functional requirements 10Annex B (informative) Compressed natural gas (CNG)
10、 on-board fuel systems .11Bibliography .13 ISO 2016 All rights reserved iiiContents PageBS ISO 15501-1:2016ISO 15501-1:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internation
11、al 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 ISO,
12、 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
13、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 ele
14、ments 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 receiv
15、ed (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 adher
16、ence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 22, Road vehicles, Subcommittee SC 41, Specific aspects for gaseous fuels.This third edition cance
17、ls and replaces the second edition (ISO 15501-1:2012), which has been technically revised.A list of all parts in the ISO 15501 series can be found on the ISO website.iv ISO 2016 All rights reservedBS ISO 15501-1:2016ISO 15501-1:2016(E)IntroductionFor the purposes of this document, all fuel system co
18、mponents in contact with natural gas have been considered suitable for natural gas as defined in ISO 15403.When applying this document, it is to be understood that a safety device to prevent overfilling the vehicles fuel system is part of the refuelling station. The pressure gauge has not been consi
19、dered as a safety component.When necessary, technical solutions regarding functional requirements are given in Annex A.This document refers to a service pressure of 20 MPa (200 bar).NOTE 1 1 bar = 0,1 MPa = 105Pa. 1 MPa = 1 N/mm2.NOTE 2 This document is based upon a service pressure for natural gas
20、as fuel of 20 MPa (200 bar) 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 1,25. ISO 2016 All rights reserved vBS ISO 15501-1:
21、2016BS ISO 15501-1:2016Road vehicles Compressed natural gas (CNG) fuel systems Part 1: Safety requirements1 ScopeThis document specifies the minimum safety requirements applicable for the functionality of CNG on-board fuel systems intended for use on the types of motor vehicles defined in ISO 3833.
22、This document is applicable to vehicles using compressed natural gas in accordance with ISO 15403, including mono-fuel, bi-fuel or dual-fuel applications, original-production and converted vehicles.All matters relating to the skills of installers and converters have been excluded from this document.
23、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 edition of the referenced document (including
24、any amendments) applies.ISO 11439, Gas cylinders High pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehiclesISO 14469 (all parts), Road vehicles Compressed natural gas (CNG) refuelling connectorISO 15500 (all parts), Road vehicles Compressed natural gas (CNG) fu
25、el system componentsISO 15501-2, Road vehicles Compressed natural gas (CNG) fuel systems Part 2: Test methodsIEC 60079-10-1, Explosive atmospheres Part 10-1: Classification of areas Explosive gas atmospheres3 Terms and definitionsFor the purposes of this document, the terms and definitions given in
26、ISO 1176, ISO 15500-1 and the following apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp3.1service pressuresettled pre
27、ssure of 20 MPa (200 bar) at a uniform gas temperature of 15 C3.2CNG on-board fuel systemcompressed natural gas fuel system comprising cylinder, or cylinders according to ISO 11439, mounting, one or more refuelling receptacles according to ISO 14469 (all parts), and the components described in ISO 1
28、5500-3 to ISO 15500-20INTERNATIONAL STANDARD ISO 15501-1:2016(E) ISO 2016 All rights reserved 1BS ISO 15501-1:2016ISO 15501-1:2016(E)3.3main shut-off valveautomatic valve designed to isolate a high-pressure source3.4mono-fuel NGVvehicle which operates on natural gas onlyNote 1 to entry: Also known a
29、s “Dedicated Natural Gas Vehicle”.Note 2 to entry: In Europe and in India the term Mono-Fuel also applies to a light duty NGV with max 15 l gasoline tank.3.5bi-fuel NGVvehicle that has two independent fuel systems (one of them for natural gas) and can run alternatively on either fuel, but only on on
30、e at a timeNote 1 to entry: The term bi-fuel also applies to vehicles that run on both fuels simultaneously in limited amount or duration.3.6dual-fuel NGVvehicle that has two independent fuel systems (one of them for natural gas) and can run on both fuels simultaneouslyNote 1 to entry: Vehicle also
31、may run on one fuel alone.3.7 Vehicle mass3.7.1kerb masscomplete shipping mass of a vehicle fitted with all equipment necessary for normal operation plus the mass of the following elements for M1, N1 and M2 having a maximum authorized mass not exceeding 3 500 kg: lubricants, coolant (if needed), was
32、her fluid; fuel (tank filled to at least 90 % of the capacity specified by the manufacturer); other equipment if included as basic parts for the vehicle, such as spare wheels, wheel chocks, fire extinguishers, spare parts and tool kitNote 1 to entry: The definition of kerb mass may vary from country
33、 to country, but in this document it refers to the definition contained in ISO 1176.3.7.2maximum authorized masskerb mass plus the maximum allowable payload3.8 Vehicle categories3.8.1category Mpower-driven vehicles having at least four wheels and used for the carriage of passengers3.8.1.1category M1
34、vehicles used for the carriage of passengers and comprising no more than eight seats in addition to the drivers seat2 ISO 2016 All rights reservedBS ISO 15501-1:2016ISO 15501-1:2016(E)3.8.1.2category M2vehicles used for the carriage of passengers and comprising more than eight seats in addition to t
35、he drivers seat and having a maximum authorized mass not exceeding 5 000 kg3.8.1.3category M3vehicles used for the carriage of passengers and comprising more than eight seats in addition to the drivers seat and having a maximum authorized mass exceeding 5 000 kg3.8.2category Npower-driven vehicles h
36、aving at least four wheels and used for the carriage of goods3.8.2.1category N1vehicles used for the carriage of goods and having a maximum authorized mass not exceeding 3 500 kg3.8.2.2category N2vehicles used for the carriage of goods and having a maximum authorized mass exceeding 3 500 kg but not
37、exceeding 12 000 kg3.8.2.3category N3vehicles used for the carriage of goods and having a maximum authorized mass exceeding 12 000 kg4 Requirements4.1 Design4.1.1 GeneralThe CNG on-board fuel system components shall comply with ISO 11439, ISO 14469 (all parts) and ISO 15500 (all parts), as applicabl
38、e.For bi-fuel vehicles, provision shall be made to avoid accelerated deterioration of the non-CNG fuel system as a result of sustained operation on natural gas. Such measures shall be as recommended by the original vehicle manufacturer (e.g. fuel hoses).All fuel system components shall fulfill the f
39、ollowing conditions.a) They shall withstand the environmental temperatures and other environmental conditions safely during their operational life.b) They shall be located with full regard for anticipated damage while the vehicle is being used safely. Such damage may be caused by the vehicle itself,
40、 by extraneous factors such as heat, road debris, automotive fluids (brake liquid, oil, petrol, cooling liquid, etc.), or by rust, etc.c) They shall be fitted so that they are not the outermost, highest or lowest parts of the vehicles; otherwise they shall be protected.d) They shall be fitted so as
41、not to affect ground clearance, approach angle, ramp (break-over) angle or departure angles as defined by the vehicle manufacturer.e) They shall be located so that they will not suffer corrosion damage by accumulation of water or cargo chemicals.f) They shall ensure the proper electrical conductivit
42、y throughout the fuel system in order to avoid the electrostatic charges. This provision does not apply to gas-tight housing and ventilation hose. ISO 2016 All rights reserved 3BS ISO 15501-1:2016ISO 15501-1:2016(E)g) All connections shall be made in locations where access is possible for inspection
43、.The CNG system shall be installed in such a way that it has suitable protection against damage, such as damage due to moving vehicle components, collision, grit or due to the loading or unloading of the vehicle or the shifting of those loads.The CNG system shall include automatic valves designed to
44、 close when the engine is not running on CNG, and shall be able to be manually opened or closed in case of failure of the automatism (see Annex B).The CNG on-board fuel system shall include the following: an automatic valve to be installed directly on every CNG cylinder with a manual valve rigidly f
45、ixed to the CNG cylinder, which may be integrated into the automatic valve. The manual valve shall be able to isolate the cylinder content from the automatic valve; a PRD installed on each cylinder, functionally independent from any other component; one or more additional PRD as applicable to the ap
46、proval of the cylinder according to ISO 11439; and an excess flow valve inside every cylinder or a functionally equivalent system to control the gas leakage in the event of an abnormal flow (see informative Annex A).The automatic valve shall be closed when the vehicle is not operating on CNG, and th
47、e engine is not running.The valve may remain open when the engine stops during the stop phase in start-stop systems where the valve shall remain open by design.Only automatic valves that are normally closed when deactivated shall be used in the CNG on-board fuel system.4.1.2 Components4.1.2.1 Recept
48、acleThe receptacle shall comply with ISO 14469 (all parts).The receptacle shall be provided with a protective cap, to prevent the entry of dust, fluid or other foreign matter. The protective cap shall be attached in such a way that will prevent loss of the cap.The following data shall be displayed n
49、ear the receptacle (marking shall be permanent): type of fuel (i.e. “CNG” for compressed natural gas); periodic inspection date for gas cylinders according to ISO 11439 or applicable regulations; and service pressure for the vehicle.4.1.2.2 Gas cylinderGas cylinders shall be provided with cylinder valves, automatic valves, excess flow valves (or a functionally equivalent system) and pressure-relief devices, and shall be mounted in accordance with 4.4.To prevent heat damage, gas cylinders and appurtenances sh
