ANSI CSA AM CSA NGV 4.2-2014 CSA 12.52-2014 Hoses for natural gas dispensing systems (Second Edition).pdf

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1、ANSI/CSA NGV 4.2-2014CSA 12.52-2014Hoses for natural gas dispensingsystemsLegal Notice for StandardsCanadian Standards Association and CSA America, Inc. (operating as “CSA Group”) develop standards through a consensus standardsdevelopment process approved by the Standards Council of Canada and the A

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18、the terms and conditions of this Legal Notice.Standards UpdateServiceANSI/CSA NGV 4.2-2014 CSA 12.52-2014February 2014Title: Hoses for natural gas dispensing systemsTo register for e-mail notification about any updates to this publication go to shop.csa.ca click on CSA Update ServiceThe List ID that

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21、dards and related publications, visit our Online Store at shop.csa.caor call toll-free 1-800-463-6727 or 416-747-4044.TMA trade-mark of the Canadian Standards Association and CSA America Inc., operating as “CSA Group”American National Standards Institute, Inc.Interprovincial Gas Advisory CouncilAppr

22、oved on February 3, 2014 by ANSIApproved on February 25, 2014 by IGACEffective in Canada August 1, 2015Hoses for natural gas dispensingsystemsANSI/CSA NGV 4.2-2014 CSA 12.52-2014ANSI/CSA NGV 4.2-2014 CSA 12.52-2014 Hoses for natural gas dispensing systemsFebruary 2014 2014 CSA Group 1ContentsJoint A

23、utomotive Technical Committee 3Joint Technical Advisory Group for Hoses for Natural Gas Vehicles and Dispensing Systems 5Technical Committee on Natural Gas Powered Vehicles and Fuelling 7Interprovincial Gas Advisory Council 9Preface 111 Scope 142 Reference publications 153 Definitions 154 General re

24、quirements 184.1 Test samples 184.2 General construction 184.3 Fittings 204.4 Instructions 204.5 Markings 214.6 Gas composition 215 Test methods 225.1 General 225.2 Leakage 225.3 Ultraviolet light and water exposure test 235.4 Hydrostatic strength 235.5 Electrical conductivity 245.6 Kink resistance

25、dispenser hoses Class A 245.7 Kink resistance Class D Hoses 245.8 Crush test 255.9 Impact test 255.10 Torsion strength 265.11 End fitting stress relief and hose bending 265.12 Tensile test 275.13 Materials 285.14 Ozone resistance 295.15 Corrosion test 295.16 Vibration resistance Class D only 305.17

26、Pressure cycle test Class A, and D 315.18 Abrasion resistance test 315.19 Marking material legibility 315.20 Fluids exposure test 325.21 Verification of hose cover perforations 335.22 Oxygen aging 33ANSI/CSA NGV 4.2-2014 CSA 12.52-2014 Hoses for natural gas dispensing systemsFebruary 2014 2014 CSA G

27、roup 25.23 Hose permeation 345.24 Quality assurance 355.25 Manufacturing inspection and acceptance testing 366 Manufacturingand production tests 377 Items unique to one country (Canada) 38Annex A Applications summary 39Annex B Impact test apparatus 40Annex C Danger 41ANSI/CSA NGV 4.2-2014 CSA 12.52-

28、2014 Hoses for natural gas dispensing systemsFebruary 2014 2014 CSA Group 3Joint Automotive Technical CommitteeJ. Birdsall Toyota Motor Engineering c) wording of the proposed change; andd) rationale for the change.6) To submit a request for interpretation of this Standard, please send the following

29、information toinquiriescsagroup.organd include “Request for interpretation” in the subject line:a) define the problem, making reference to the specific clause, and, where appropriate, include anillustrative sketch;b) provide an explanation of circumstances surrounding the actual field condition; and

30、c) where possible, phrase the request in such a way that a specific “yes” or “no” answer will address theissue.Committee interpretations are processed in accordance with the CSA Directives and guidelines governingstandardization and are available on the Current Standards Activities page at standards

31、activities.csa.ca.ANSI/CSA NGV 4.2-2014 CSA 12.52-2014 Hoses for natural gas dispensing systemsFebruary 2014 2014 CSA Group 12History of development of ANSI/CSA NGV 4.2 CSA 12.52Note: This history is informative and is not part of the standardDuring 1984, there was growing need in the U.S. natural g

32、as vehicle industry for guidelines pertaining tothe assembly of aftermarket equipment installed on motor 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

33、Gas Vehicle (CNG) Conversion Kits, No. 1-85. Thisrequirement was intended to help promote the safe development 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 Aug

34、ust 20, 1985.At the time of its issuance,the A.G.A. No. 1-85 was in compliance with NGV equipment and fuelingstations specifications published by the National Fire Protection Association (NFPA) under its Standard forCompressedNatural Gas (CNG) Vehicular Fuel Systems, NFPA 52. The first edition of NF

35、PA 52 was issuedin 1984. A second edition was issued in 1988.In 1988 a group of U.S. gas utilities formed the Natural Gas Vehicle (NGV) Coalition (the Coalition) topromote widespread use of compressed natural gas as a transport fuel. The Coalition organizedcommittees to address technical, marketing

36、and legislative issues which would affect the futureexpansion of a U.S. transportation industry fueled by natural gas.The Coalition recognized that an important consideration in the successful commercialization of naturalgas as a vehicle fuel was the issue of codes and standards (or the lack of code

37、s and standards, orharmonized codes and standards) pertaining to both fuel stations and vehicle fuel systems. TheCoalitions Technology Committee was established to achieve the goal of an organized family ofcoordinated codes, standards and regulations addressing natural gas vehicles and fueling stati

38、ons. Tohelp achieve this goal, the Technology Committee established the Standards and StandardizationSubcommittee.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

39、 NGV Conversion Equipment Task Group was established to coordinate with theAGAL for requirements for compressed NGV conversion kits. The task group agreed the phrase “NGV fuelsystem” should replace “NGV conversion kits.” (An NGV fuel system is comprised of all majorcomponents required to supply, man

40、age, and/or control fuel flow, enabling a vehicle to operate onnatural gas.) The task group continued to meet during August, October and December 1992 topromulgate the development of a standard to cover both dedicated and bi-fuel natural gas systems forlight and medium duty vehicles.A standard for N

41、GV fuel system components already existed in Canada namely the National Standard ofCanada CAN/CGA 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 provis

42、ions for Natural Gas Vehicles (NGV) fuel system components on highwayvehicles, as well as coverage 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 go

43、als for North American harmonization,the task group and the CanadianGas Association (CGA) NGV Steering Committee on Natural Gas Powered Vehicles, initiated formation ofANSI/CSA NGV 4.2-2014 CSA 12.52-2014 Hoses for natural gas dispensing systemsFebruary 2014 2014 CSA Group 13a joint activity involvi

44、ng the CGA Steering Committees Subcommittee on Fuel System Components forNatural 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 the CGA12.3 Standards Subcommittee on Fuel System Components

45、for Natural Gas Powered Vehicles was held.As a result the U.S. Task Group and Canadian Subcommittee agreed to establish the Joint NGVC/CGASubcommittee on Natural Gas Vehicle Conversion Equipment, to develop harmonized requirements for aNorth American Bi-National standard. The newly established subco

46、mmittee agreed to proceed withharmonization of the Canadian Standard for Fuel System Components for Natural Gas Powered Vehicles,CAN/CGA-12.3, which was first published in February 1991, and A.G.A. requirement 1-85. In light of thedifferent approaches in Canada and the U.S. the joint subcommittee ag

47、reed that separate harmonizedstandards should be developed for both complete fuel systems and individual system components.Subsequently, as needs were identified,the following series of standards evolved under the auspices ofthe Joint NGV Subcommittee. Within this series,these standards are compleme

48、ntary and hence thesestandards achieve compatibility with regard to application and performance.Standards for: ANSI NGV 4.1-1999 CSA 12.5-M99, NGV dispensing systems; ANSI NGV 4.2-1999 CSA 12.52-M99,Hoses for natural gas vehicles and dispensing systems; ANSI NGV 4.4-1999 CSA 12.54-M99,breakaway devi

49、ces for natural gas dispensing hoses and systems; ANSI NGV 4.6-1999 CSA 12.56-M99,Manually operated valves for natural gas dispensing systems; and ANSI NGV 4.7-1999 CSA 12.57-M99,Automatic pressure operated valves for natural gas dispensingsystems.The first edition of the harmonized ANSI/CSA Standard for NGV Hoses for Natural Gas Vehicles andDispensing Systems, was approved in the U.S. by the American National Standards Institute, Inc. onFebruary 18, 1999, and in Canada by the (Interim CSA) NGV Standards Steering Committe