1、ANSI/IAS NGV 4.1-1999CSA 12.5-M99AMERICAN NATIONAL STANDARD/CSA STANDARDFORNGV DISPENSING SYSTEMSAMERICAN NATIONAL STANDARD CANADIAN STANDARDS ASSOCIATIONANSI/IAS NGV 4.1-1999 CSA 12.5-M99First Edition - 1999NGV DISPENSING SYSTEMSApproved byAmerican National Standards Institute, Inc., February 18, 1
2、999Interprovincial Gas Advisory Council, December 1, 1998This Standard is effective June 1, 2000Prepared byCSA INTERNATIONAL8501 East Pleasant Valley Road 178 Rexdale BoulevardCleveland, Ohio 44131 Toronto, OntarioCanada M9W 1R3On behalf ofthe Natural Gas Vehicle CoalitionPublished - May 1999Copyrig
3、ht 1999Canadian Standards AssociationPermission is granted to republish material herein in laws or ordinances,and in regulations, administrative orders, or similar documents issued bypublic authorities. Those desiring permission for other republicationshould consult CSA International at 178 Rexdale
4、Boulevard, Toronto,Ontario, Canada M9W 1R3.Copyright 1999CSA America, Inc.Permission is granted to republish material herein in laws or ordinances,and in regulations, administrative orders, or similar documents issued bypublic authorities. Those desiring permission for other republicationshould cons
5、ult CSA International at 8501 E. Pleasant Valley Road,Cleveland, Ohio 44131.CANADIAN STANDARDS ASSOCIATIONThe Canadian Standards Association, which operatesunder the name CSA International (CSA), under whoseauspices this Standard has been produced, was chartered in1919 and accredited by the Standard
6、s Council of Canada tothe National Standards system in 1973. It is a not-for-profit,nonstatutory, voluntary membership association engaged instandards development and certification activities.CSA standards reflect a national consensus of producers andusers including manufacturers, consumers, retaile
7、rs,unions and professional organizations, and governmentalagencies. The standards are used widely by industry andcommerce and often adopted by municipal, provincial, andfederal governments in their regulations, particularly in thefields of health, safety, building and construction, and theenvironmen
8、t.Individuals, companies, and associations across Canadaindicate their support for CSAs standards development byvolunteering their time and skills to CSA Committee workand supporting the Associations objectives through sustainingmemberships. The more than 7000 committee volunteers andthe 2000 sustai
9、ning memberships together form CSAs totalmembership from which its Directors are chosen. Sustainingmemberships represent a major source of income for CSAsstandards development activities.The Association offers certification and testing services insupport of and as an extension to its standards devel
10、opmentactivities. To ensure the integrity of its certification process,the Association regularly and continually audits and inspectsproducts that bear the CSA Mark.In addition to its head office and laboratory complex inToronto, CSA has regional branch offices in major centresacross Canada and inspe
11、ction and testing agencies in eightcountries. Since 1919, the Association has developed thenecessary expertise to meet its corporate mission: CSA is anindependent service organization whose mission is to providean open and effective forum for activities facilitating theexchange of goods and services
12、 through the use of standards,certification and related services to meet national andinternational needs.LAssociation canadienne de normalisation, maintenantconnue sous le nom CSA International (CSA), sous lesauspices de laquelle cette Norme a t prpare, a reu seslettres patentes en 1919 et son accrd
13、itation au sein duSystme de normes nationales par le Conseil canadien desnormes en 1973. Association daffiliation libre, sans butlucratif ni pouvoir de rglementation, elle se consacre llaboration de normes et la certification.Les normes CSA refltent le consensus de producteurs etdusagers de partout
14、au pays, au nombre desquels setrouvent des fabricants, des consommateurs, des dtaillantset des reprsentants de syndicats, de corps professionnels etdagences gouvernementales. Lutilisation des normes CSA esttrs rpandue dans lindustrie et le commerce, et leuradoption divers ordres de lgislation, tant
15、municipal etprovincial que fdral, est chose courante, particulirementdans les domaines de la sant, de la scurit, du btiment,de la construction et de lenvironnement.Les Canadiens dun bout lautre du pays tmoignent deleur appui au travail de normalisation men par la CSA enparticipant bnvolement aux tra
16、vaux des comits de la CSAet en appuyant ses objectifs par leurs cotisations de membresde soutien. Les quelque 7000 volontaires faisant partie descomits et les 2000 membres de soutien constituentlensemble des membres de la CSA parmi lesquels sesadministrateurs sont choisis. Les cotisations des membre
17、s desoutien reprsentent une source importante de revenu pourles services de soutien la normalisation volontaire.LAssociation offre des services de certification et de mise lessai qui appuient et compltent ses activits dans ledomaine de llaboration de normes. De manire assurerlintgrit de son processu
18、s de certification, lAssociationprocde de faon rgulire et continue lexamen et linspection des produits portant la marque CSA.Outre son sige social et ses laboratoires Toronto, la CSApossde des bureaux rgionaux dans des centres vitauxpartout au Canada, de mme que des agences dinspectionet dessai dans
19、 huit pays. Depuis 1919, lAssociation a parfaitles connaissances techniques qui lui permettent de remplirsa mission dentreprise, savoir la CSA est un organisme deservices indpendant dont la mission est doffrir une tribunelibre et efficace pour la ralisation dactivits facilitantlchange de biens et de
20、 services par lintermdiaire deservices de normalisation de certification et autres, pourrpondre aux besoins de nos clients, tant lchelle nationalequinternationale.For futher information on CSA services, write to Pour plus amples renseignements sur les services de la CSA,sadresser CSA International17
21、8 Rexdale BoulevardToronto, Ontario, M9W 1R3CanadaAMERICAN NATIONAL STANDARDS INSTITUTEThe American National Standards Institute (ANSI),Inc. is the nationally recognized coordinator of voluntarystandards development in the United States throughwhich voluntary organizations, representing virtuallyeve
22、ry technical discipline and every facet of trade andcommerce, organized labor and consumer interests,establish and improve the some 10,000 nationalconsensus standards currently approved as AmericanNational Standards.ANSI provides that the interests of the public mayhave appropriate participation and
23、 representation instandardization activity, and cooperates withdepartments and agencies of U.S. Federal, state andlocal governments in achieving compatibility betweengovernment codes and standards and the voluntarystandards of industry and commerce.ANSI represents the interests of the United Statesi
24、n international nontreaty organizations such as theInternational Organization for Standardization (ISO) andthe International Electrotechnical Commission (IEC).The Institute maintains close ties with regionalorganizations such as the Pacific Area StandardsCongress (PASC) and the Pan American Standard
25、sCommission (COPANT). As such, ANSI coordinates theactivities involved in the U.S. participation in thesegroups.ANSI approval of standards is intended to verifythat the principles of openness and due process havebeen followed in the approval procedure and that aconsensus of those directly and materi
26、ally affected bythe standards has been achieved. ANSI coordination isintended to assist the voluntary system to ensure thatnational standards needs are identified and met with aset of standards that are without conflict or unnecessaryduplication in their requirements.Responsibility of approving Amer
27、ican National Standards rests with theAmerican National Standards Institute, Inc.11 West 42nd StreetNew York, NY10036PREFACEThis publication represents a standard for safe operation, substantial and durable construction andperformance testing of components for natural gas vehicle dispensing systems,
28、 within limitations givenbelow and in the scope of this standard.This standard is based on proven engineering principles, research and the combined expertise of gasutilities, manufacturers, users, and others having specialized experience.Nothing in this standard is to be considered in any way as ind
29、icating a measure of quality beyondcompliance with the provisions it contains. It is designed to allow compliance of products which mayexceed that specified in the provisions herein. In its preparation, full recognition has been given topossibilities of improvement through ingenuity of design. This
30、standard is subject to revision as furtherexperience and investigation may show it is necessary and desirable.The CSA International (CSA), and their respective Laboratories, does not assume or undertake to dischargeany responsibility of the manufacturer or any other party. CSA International, shall n
31、ot incur any obligationor liability for damages, including consequential damages, arising out of or in connection with the use,interpretation of or reliance upon this standard.Users of this Harmonized American National and Canadian Standards Association Standard are advisedthat the devices/products/
32、activities within its scope may be subject to regulation at the Federal, state,provincial, or local levels. Users are strongly urged to investigate this possibility through appropriatechannels. In the event of a conflict with this standard, the Federal, state, provincial or local regulationsshould b
33、e followed.This standard does not apply to fuel system components that will be incorporated during originalmanufacture of motor vehicles which comply with Federal Motor Vehicle Safety Standards (FMVSS) orCanadian Motor Vehicle Safety Standards (CMVSS) for Natural Gas Powered Vehicles.CAUTION NOTICE:
34、 This American National Standard may be revised or withdrawn at any time. Theprocedures of the American National Standards Institute, Inc., require that action be taken to reaffirm,revise, or withdraw this standard no later than five (5) years from the date of approval. Purchasers mayreceive current
35、 information on this and other ANSI standards by calling or writing CSA International,8501 East Pleasant Valley Road, Cleveland, Ohio 44131, (216) 524-4990.Information on this and other Canadian standards may be obtained by calling or writing CSA International,78 Rexdale Boulevard, Toronto, Ontario,
36、 Canada M9W 1R3.EFFECTIVE DATE: An organization using this standard for product evaluation as a part of itscertification program will normally establish the date by which all products certified by that organizationshould comply with this standard. In Canada, effective dates are established by the In
37、terprovincial GasAdvisory Council.HISTORY OF DEVELOPMENT OF ANSI NGV 4.1iiCSA 12.5(This history is informative and is not part of the standard)During 1984, there was growing need in the U.S. natural gas vehicle industry for guidelines pertaining tothe assembly of aftermarket equipment installed on m
38、otor vehicles in order to operate alternatively oneither gasoline or natural gas. The American Gas Association Laboratories (AGAL), in response to thisneed developed an A.G.A. Requirement for Natural Gas Vehicle (CNG) Conversion Kits, No. 1-85. Thisrequirement was intended to help promote the safe d
39、evelopment and installation of NGV conversionsystems by manufacturers and installers. The first draft of A.G.A. Requirement No. 1-85 was developedduring 1984 and 1985, with the final version dated August 20, 1985.At the time of its issuance, the A.G.A. No. 1-85 was in compliance with NGV equipment a
40、nd fuelingstations specifications published by the National Fire Protection Association (NFPA) under its Standard forCompressed Natural Gas (CNG) Vehicular Fuel Systems, NFPA 52. The first edition of NFPA 52 wasissued in 1984. A second edition was issued in 1988.In 1988 a group of U.S. gas utilities
41、 formed the Natural Gas Vehicle (NGV) Coalition (the Coalition) topromote widespread use of compressed natural gas as a transport fuel. The Coalition organized committeesto address technical, marketing and legislative issues which would affect the future expansion of a U.S.transportation industry fu
42、eled by natural gas.The Coalition recognized that an important consideration in the successful commercialization of natural gasas a vehicle fuel was the issue of codes and standards (or the lack of codes and standards, or harmonizedcodes and standards) pertaining to both fuel stations and vehicle fu
43、el systems. The Coalitions TechnologyCommittee was established to achieve the goal of an organized family of coordinated codes, standards andregulations addressing natural gas vehicles and fueling stations. To help achieve this goal, the TechnologyCommittee established the Standards and Standardizat
44、ion Subcommittee.Subsequently, the third edition of NFPA 52 was published in 1992. This edition incorporated manychanges developed and recommended by the NGV Coalitions task groups.During August 1992, an NGV Conversion Equipment Task Group was established to coordinate with theAGAL for requirements
45、for compressed NGV conversion kits. The task group agreed the phrase “NGVfuel system” should replace “NGV conversion kits.” (An NGV fuel system is comprised of all majorcomponents required to supply, manage, and/or control fuel flow, enabling a vehicle to operate on naturalgas.) The task group conti
46、nued to meet during August, October and December 1992 to promulgate thedevelopment of a standard to cover both dedicated and bi-fuel natural gas systems for light and mediumduty vehicles.A standard for NGV fuel system components already existed in Canada namely the National Standard ofCanada CAN/CGA
47、 12.3, Fuel System Components for Natural Gas Powered Vehicles. The genesis for thisCanadian document was the Amendment to the 1982 CGA B149.1, Natural Gas Installation Code whichadded to the Code provisions for Natural Gas for Vehicles (NGV) fuel system components on highwayvehicles, as well as cov
48、erage of NGV refuelling stations. Subsequently these NGV aspects evolved intostand-alone Canadian documents, one being the CAN/CGA-12.3 which was first published in February1991.In order to further common goals for North American harmonization, the task group and the CanadianGas Association (CGA) NG
49、V Steering Committee on Natural Gas Powered Vehicles, initiated formationof a joint activity involving the CGA Steering Committees Subcommittee on Fuel System Componentsfor Natural Gas Powered Vehicles and the NGV Conversion Equipment Task Group.On February 17, 1993, the first joint meeting of the NGV Conversion Equipment Task Group and theCGA 12.3 Standards Subcommittee on Fuel System Components for Natural Gas Powered Vehicles washeld. As a result the U.S. Task Group and Canadian
