1、BS ISO 16923:2016Natural gas fuelling stations CNG stations for fuellingvehiclesBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS ISO 16923:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 16923:2016.The UK participation in
2、 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 publication does not purport to include all the necessary provisions of a contract. Users
3、 are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 80677 3 ICS 75.200 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of th
4、e Standards Policy and Strategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO 16923:2016 ISO 2016Natural gas fuelling stations CNG stations for fuelling vehiclesStations-service de gaz naturel Stations GNC pour le ravitaillement de vhi
5、culesINTERNATIONAL STANDARDISO16923First edition2016-12-15Reference numberISO 16923:2016(E)BS ISO 16923:2016ISO 16923:2016(E)ii ISO 2016 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2016, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may
6、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 country of the r
7、equester.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 16923:2016ISO 16923:2016(E)Foreword v1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols and abbreviated terms . 8
8、4.1 Symbols . 84.2 Abbreviated terms . 85 Risk management 86 General design requirements . 96.1 General . 96.2 Site layout . 106.3 Pressure safety relief valves and venting 107 Fuel supply to the fuelling station .117.1 Supply by pipeline . 117.2 Supply by mobile storage 118 Dryer 129 Compressors 12
9、9.1 General 129.2 Instrumentation and control . 139.3 Crankcase design 139.4 Compressor enclosures, buildings and canopies .149.5 Underground compressor installations . 169.6 Hazardous area classification 1610 Buffer storage .1611 Dispensers 1711.1 General requirements 1711.2 Breakaway devices . 171
10、1.3 Fuelling hose assemblies . 1811.4 Fuelling hoses . 1911.5 Enclosure 1911.6 Fuelling controls and instrumentation . 2011.7 Electrical systems and interconnections . 2211.8 Documentation 2212 Gas odorization .2213 Pipework 2313.1 General 2313.2 Buried piping . 2314 Electrical 2414.1 Labelling 2414
11、.2 Contact with live parts. 2414.3 Cables . 2414.4 Performance after power fail and restoration 2414.5 Electrical bonding and grounding . 2515 Instrumentation and control system 2515.1 Gas detection . 2515.2 Emergency shutdown devices 2516 Emergency shutdown .2616.1 Emergency shutdown procedure . 26
12、 ISO 2016 All rights reserved iiiContents PageBS ISO 16923:2016ISO 16923:2016(E)16.2 Restoration after emergency shutdown . 2617 Indoor fuelling .2617.1 General 2617.2 Ventilation 2617.3 Additional requirements . 2718 Testing and commissioning 2719 Operation 2819.1 Fuelling procedures . 2819.2 Safet
13、y signs 2819.3 Training 2819.4 Emergency response plan 2919.5 Operations manual . 2920 Inspection and maintenance .2920.1 Inspection and maintenance program. 2920.2 Maintenance and testing frequency of gas detection .30Annex A (informative) Examples of hazardous zone classification .31Annex B (norma
14、tive) Separation distances 38Annex C (informative) Fuelling procedures .39Annex D (informative) Emergency instructions example 40Annex E (informative) Example of fuelling station periodic inspection and maintenance 41Bibliography .43iv ISO 2016 All rights reservedBS ISO 16923:2016ISO 16923:2016(E)Fo
15、rewordISO (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 tech
16、nical 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
17、 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
18、 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 for identifying any or all such p
19、atent 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 does no
20、t 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 adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.o
21、rg/iso/foreword.html.The committee responsible for this document is ISO/PC 252, Natural gas fuelling stations for vehicles. ISO 2016 All rights reserved vBS ISO 16923:2016BS ISO 16923:2016Natural gas fuelling stations CNG stations for fuelling vehicles1 ScopeThis document covers the design, construc
22、tion, operation, inspection and maintenance of stations for fuelling compressed natural gas (CNG) to vehicles, including equipment, safety and control devices.This document also applies to portions of a fuelling station where natural gas is in a gaseous state and dispensing CNG derived from liquefie
23、d natural gas (LCNG) according to ISO 16924.This document applies to fuelling stations supplied with natural gas as defined in local applicable gas composition regulations or ISO 13686. It also applies to other gases meeting these requirements including biomethane, upgraded coal-bed methane (CBM) an
24、d gas supplies coming from LNG vaporization (on-site or off-site).This document includes all equipment for downstream gas supply connection (i.e. point of separation between the CNG fuelling station piping and the pipeline network). Fuelling station nozzles are not defined in this document.This docu
25、ment covers fuelling stations with the following characteristics: slow fill; fast fill; private access; public access (self-service or assisted); fuelling stations with fixed storage; fuelling stations with mobile storage (daughter station); multi-fuel stations.This document is not applicable to dom
26、estic CNG fuelling devices without buffer storage.NOTE This document is based on the condition that the gas entering the fuelling station is odorized. For unodorized gas fuelling stations, additional safety requirements are included in Clause 10.2 Normative referencesThe following documents are refe
27、rred to in 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 amendments) applies.ISO 7-1, Pipe threads where pressu
28、re-tight joints are made on the threads Part 1: Dimensions, tolerances and designationISO 834-1, Fire-resistance tests Elements of building construction Part 1: General requirementsISO 4126-1, Safety devices for protection against excessive pressure Part 1: Safety valvesISO 8580, Rubber and plastics
29、 hoses Determination of ultra-violet resistance under static conditionsINTERNATIONAL STANDARD ISO 16923:2016(E) ISO 2016 All rights reserved 1BS ISO 16923:2016ISO 16923:2016(E)ISO 9809-1, Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 1: Quenched and temp
30、ered steel cylinders with tensile strength less than 1 100 MPaISO 9809-2, Gas cylinders Refillable seamless steel gas cylinders Design, construction and testing Part 2: Quenched and tempered steel cylinders with tensile strength greater than or equal to 1 100 MPaISO 11119-1, Gas cylinders Refillable
31、 composite gas cylinders and tubes Design, construction and testing Part 1: Hoop wrapped fibre reinforced composite gas cylinders and tubes up to 450 lISO 11119-2, Gas cylinders Refillable composite gas cylinders and tubes Design, construction and testing Part 2: Fully wrapped fibre reinforced compo
32、site gas cylinders and tubes up to 450 l with load-sharing metal linersISO 11119-3, Gas cylinders Refillable composite gas cylinders and tubes Design, construction and testing Part 3: Fully wrapped fibre reinforced composite gas cylinders and tubes up to 450L with non-load-sharing metallic or non-me
33、tallic linersISO 11439, Gas cylinders High pressure cylinders for the on-board storage of natural gas as a fuel for automotive vehiclesISO 11925-3, Reaction to fire tests Ignitability of building products subjected to direct impingement of flame Part 3: Multi-source testISO 12100, Safety of machiner
34、y General principles for design Risk assessment and risk reductionISO 13847, Petroleum and natural gas industries Pipeline transportation systems Welding of pipelinesISO 14120, Safety of machinery Guards General requirements for the design and construction of fixed and movable guardsISO 15500-2, Roa
35、d vehicles Compressed natural gas (CNG) fuel system components Part 2: Performance and general test methodsISO 15500-17, Road vehicles Compressed natural gas (CNG) fuel system components Part 17: Flexible fuel lineISO 15589-1, Petroleum, petrochemical and natural gas industries Cathodic protection o
36、f pipeline systems Part 1: On-land pipelinesISO 15649, Petroleum and natural gas industries PipingIEC 31010, Risk management Risk assessment techniquesIEC 60079-0, Electrical apparatus for explosive gas atmospheres Part 0: General requirementsIEC 60079-10-1, Explosive atmospheres Part 10-1: Classifi
37、cation of areas Explosive gas atmospheresIEC 60079-11, Explosive atmospheres Part 11: Equipment Protection by Intrinsic Safety “i”IEC 60079-14, Electrical apparatus for explosive gas atmospheres Part 14: Electrical installations in hazardous areas (other than mines)IEC 60079-25, Explosive atmosphere
38、s Part 25: Intrinsically safe electrical systemsIEC 60204-1, Safety of machinery Electrical equipment of machines Part 1: General requirementsIEC 60529, Degrees of protection provided by enclosures (IP Code)3 Terms and definitionsFor the purposes of this document, the following terms and definitions
39、 apply.2 ISO 2016 All rights reservedBS ISO 16923:2016ISO 16923:2016(E)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/obp3.1as
40、semblysub-system of fuelling stations comprising several components3.2auto-extinguishingfeature of a material that ceases combustion upon removal of flame or ignition source3.3biomethanemethane rich gas derived from biogas or from gasification of biomass by upgrading with the properties similar to n
41、atural gasSOURCE: ISO 14532:2014, 2.1.1.153.4bondingequipotential zone where potentially live exposed metallic parts are electrically connected with at least one point connected to ground/earth3.5breakaway devicecoupling which separates at a predetermined section when required and each separated sec
42、tion contains a self-closing shut-off valve which seals automaticallySOURCE: ISO/TS 18683:2015, 3.1.33.6buffer storageone or more suitable pressure vessels designed for the purpose of storing compressed natural gas3.7buildingstructures, usually enclosed by walls and a roof, constructed to provide su
43、pport or shelter for an intended occupancy3.8burst pressurepbpressure that causes failure and consequential fluid loss through the component envelope3.9canopyroof, overhead shelter, or hood, that affords a degree of weather protection3.10CNG fuelling stationfacility at which compressed natural gas i
44、s dispensed to vehicles3.11competent personperson having the ability, appropriate training, knowledge and experience, to supervise or carry out the work being undertaken in a safe and proper manner ISO 2016 All rights reserved 3BS ISO 16923:2016ISO 16923:2016(E)3.12compressed natural gasCNGnatural g
45、as which has been compressed and stored for use as a vehicle fuelSOURCE: ISO 15500-1:2000, 3.23.13compressormachine that increases the pressure of gas3.14conduitcasing, tubing or liner, either metallic or non-metallicSOURCE: ISO 14310:2008, 3.63.15cylinderpressure vessel used for the storage of comp
46、ressed natural gas3.16cylinder working pressuresettled pressure of a fully filled cylinder at a uniform temperature of 15 C3.17dispenserequipment through which the fuel is supplied to the vehicleNote 1 to entry: This equipment can include metering.3.18dryerequipment which decreases the water vapour
47、content (moisture) of natural gas3.19enclosurestructure, not being a building or canopy, that encloses a component of the fuelling stationEXAMPLE Housing, container and machine cabinet.3.20explosive gas atmospheremixture of substances with air, under atmospheric conditions, in the form of gases, vap
48、ours, mists or dusts in which, after ignition has occurred, combustion spreads to the entire unburned mixtureSOURCE: IEC 613404-4:2014, 11, 3.43.21fail-safedesign feature that ensures that safe conditions are maintained in the event of a malfunction of a control device or an interruption of a supply
49、 source3.22fast fillfuelling operation which has a designed flow rate greater than 100 m3(N)/h per nozzle3.23field pipingpiping installed for interconnection between equipment at the site4 ISO 2016 All rights reservedBS ISO 16923:2016ISO 16923:2016(E)3.24fire resistantproperty that prevents or retards the passage of excessive heat, hot gases or flames under specified conditions3.25fire wallwall, or separating partition erected to reduce t
