1、CSA/ANSI NGV 2-2016Compressed natural gas vehicle fuel containersLegal Notice for StandardsCanadian Standards Association and CSA America, Inc. (operating as “CSA Group”) develop standards thro ugh a consensus standards development pro cess approved by the Standards Council of Canada and the America
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22、SA Group”American National Standards Institute, Inc.Approved on November 7, 2016 by ANSICompressed natural gas vehicle fuel containersCSA/ANSI NGV 2-2016CSA/ANSI NGV 2-2016 Compressed natural gas vehicle fuel containersDecember 2016 2016 CSA Group 1ContentsJoint Automotive Technical Committ ee 5NGV
23、2/HGV 2 Technical Subcommit tee on Standards for Compressed Natural Gas and Compressed Hydrogen Vehicle Fuel Container s 7Preface 111 Scope 131.1 General 131.2 Container type 131.3 Alt ernative construc tion or mater ials 131.4 Units of measure 131.5 Terminology 132 Reference publications 143 Defini
24、tions 164 Service conditions 184.1 General 184.1.1 Standard service conditions 184.1.2 Ins tallation requirements 184.1.3 Service life 184.1.4 Periodic in-service inspections 184.1.5 Conditions requiring immediate inspections 194.1.6 Overpressurization 194.2 Pressures 194.2.1 Service pressure 194.2.
25、2 Maximum pressures 194.3 Maximum number of filling cycles 194.4 Temperature range 194.4.1 Set tled gas tem peratures 194.4.2 Container tempe ratures 194.4.3 Transient tem peratures 204.4.4 Tes t t emperatures 204.5 Gas composition 204.6 Ext ernal surfaces 204.7 Gas permeation 204.8 Ins tallation re
26、quirements 205 Compliance 215.1 General 215.2 Retr oactivity 216 Mat erial qualification t ests and requirements 216.1 General 216.2 Metal container s and metal liner s 21CSA/ANSI NGV 2-2016 Compressed natural gas vehicle fuel containersDecember 2016 2016 CSA Group 26.2.1 Mat erial proper ties 216.2
27、.2 Impact t est for s tee l 226.2.3 Sulfide s tress cracking resis tance for s tee ls 226.2.4 Tensile tes ts for metals 226.2.5 Sus tained load cracking (SLC) tes t for aluminum 226.2.6 Corr osion tes ts for aluminum 236.3 Ext ernal coatings 236.3.1 Ultraviolet resis tance 236.3.2 Mois ture resis ta
28、nce 236.4 Fiber s 236.5 Resins 236.6 Nonmetallic liners (Type 4) 236.7 Bosses for Type 4 container s 247 Wall thickness 247.1 Type 1 container s 247.2 Liner s for Type 2, Type 3, and Type 4 container s 247.3 Composit e reinforcement for Type 2, Type 3, and Type 4 container s 247.3.1 Stress analysis
29、247.3.2 Stress ratios 247.3.3 Modified st ress ratio tes t 247.3.4 Hybrid designs 257.4 Ext ernal loads on container s 258 Threaded openings 259 Inspection requirements 259.1 Inspection during qualification 259.2 Inspection during manufacturing 259.2.1 Duties of inspector during manufacturing 269.3
30、Inspection during use 2710 Manufacture 2710.1 General 2710.2 Metal container s and metal liner s 2710.3 Nonmetallic liners 2710.4 Composit e container s with metallic liners 2810.5 Composit e container s with nonmetallic liners 2810.6 Brazing 2810.7 Welding 2810.8 End closing by forming 2810.9 Mount
31、ing and prot ection 2810.10 Bat ch definitions 2910.11 Design qualification t ests 3011 Pr oduction t ests and examinations 3011.1 General 3011.2 Hydr ostatic tes t 3111.3 Leak t est 31CSA/ANSI NGV 2-2016 Compressed natural gas vehicle fuel containersDecember 2016 2016 CSA Group 312 Batch t es ts 32
32、12.1 General 3212.2 Bat ch mat erial t ests 3212.3 Coat ed container s 3212.4 Bur s t tes t 3212.4.1 Bat ch bur st t est 3212.4.2 Periodic burs t tes t (applicable to NGV 2-Type 1 container s only) 3312.5 Cycle t est 3312.5.1 Bat ch cycle tes t 3312.5.2 Periodic pressure cycling t est 3313 Rejecte d
33、 container s and liner s 3413.1 Physical tes t 3413.2 Leak t est 3413.3 Hydr ostatic tes t 3413.4 Cycle t est 3413.5 Bur s t tes t 3414 Pressure relief devices 3415 Records of manufacture 3516 Manufacturer s ins tructions 3517 Marking and dispatc h 3517.1 Markings 3517.1.1 Marking information 3517.2
34、 Dispat ch 3618 Quality assurance 3618.1 General 3618.2 Independent inspection (option 2) 3619 Design qualification t es ts 3719.1 General 3719.2 Tes t requirements 3719.3 Ambient cycling tes t 4019.4 Envir onmental tes t 4019.4.1 Container set -up and preparation 4019.4.2 Pendulum impact preconditi
35、oning 4119.4.3 Envir onmental fluids for exposure 4119.4.4 Pressure cycle and pressure hold 4119.4.5 Acceptable result 4219.5 Extreme tem perature cycling 4219.6 Hydr ostatic burs t t est 4219.7 Composit e flaw tolerance tes t 4219.8 Dr op t est 4219.9 Bonfire tes t 4319.9.1 General 4319.9.2 Contain
36、er set -up 43CSA/ANSI NGV 2-2016 Compressed natural gas vehicle fuel containersDecember 2016 2016 CSA Group 419.9.3 Container s 1.65 m (65 in) length or less 4319.9.4 Container s greate r than 1.65 m (65 in) length 4419.9.5 Fire source 4419.9.6 Temperature and pressure measurements 4419.9.7 General
37、tes t requirements 4419.9.8 Acceptable results 4419.10 Accelerat ed stress rupture tes t 4519.11 Penetration tes t 4519.12 Permeation tes t 4519.13 Natural gas cycling tes t 4519.14 Leak before break (bur st) t est 4519.15 Non-des tructive examination (NDE) defect size deter mination 4519.15.1 NDE d
38、efect size by engineering critical assessment 4619.15.2 NDE defect size by flawed container cycling 4619.16 Corr osion resis tance 4719.16.1 Accelerat ed cyclic corro sion 4719.16.2 Pr ocedure 4819.16.3 Ins tructions 4819.17 Qualification tes t results 49Annex A (informative) Disassembly under press
39、ure 51Annex B (informative) Records of manufacturer 52Annex C (informative) Table of conver sion factor s 58Annex D (informative) SI (Metric) Symbols 61CSA/ANSI NGV 2-2016 Compressed natural gas vehicle fuel containersDecember 2016 2016 CSA Group5Joint Automotive Technical CommitteeJ.F. Jordan Agili
40、ty Fuel Syst ems, Cook, Minnesota, USA Cat egory: User Interes tVice-ChairJ. Birdsall Toyota Motor Engineering suggestio ns for its improvement will be referred to the appropriate committ ee. To submit a proposal for change, please send the following information to inquiriescsagroup.org and include
41、“Proposal for change” in the subject line: a) Standard designation (number);b) relevant clause, table, and/or figure number;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 information to inquiries
42、csagroup.org and include “Request for interp retation” in the subject line: a) define the problem, making reference to the specific clause, and, where appropriate, include an illustra tive sketch;b) provide an ex planation of circums tances surrounding the actual field condition; andc) where possibl
43、e, phrase the reques t in such a way that a specific “yes” or “no” answer will address the issue. Committ ee interp retations are processed in accordance with the CSA Directives and guidelines governing st andardization and are available on the Current Standards Activities page at standardsactivitie
44、s.csa. ca .CSA/ANSI NGV 2-2016 Compressed natural gas vehicle fuel containersDecember 2016 2016 CSA Group 12History of Development of CSA/ANSI NGV 2Not e: This his to ry is informative and is not part of the s tandard.In 1988, a gr oup of U.S. gas utility companies formed the Natural Gas Vehicle (NG
45、V) Coalition (the Coalition) to prom ote widespread use of natural gas as a vehicle fuel. The Coalition organized committ ees to address technical, marketing and legislative issues which would affect future expansion. The Coalition recognized that an important consideration in the successful commerc
46、ialization of natural gas as a vehicle fuel was the issue of codes and stand ards (or the lack of codes and stand ards, or harmonized codes and s tandards) pertaining to both fuel st ations and vehicle fuel sy st ems. The Coalitions Technology Committ ee undertook the goal of es tablishing a program
47、 for the development of an organized family of coordinat ed codes, st andards and regulations addressing natural gas vehicles and fueling stati ons.One of the major tech nical obs tacles to the above goal concerned the on-board fuel container . It was acknowledged that lack of a design s tandard and
48、 certification progr am for light -weight composite vehicle fuel supply container s was a major obstacle to wider use of compressed natural gas as a vehicle fuel. U.S. Department of Transportation (DOT) regulations and exemptions do not address the use of cylinders as vehicle fuel container s. Such
49、government regulations only cover cylinders which are appr oved for use in inter stat e transport.The Standards and Standardization Subcommitt ees On-Board Fuel Containers Working Gr oup esta blished a task gr oup to prepare a draft stand ard addressing NGV on-board fuel container s.The Fuel Cylinder Task Group initiated a prop osed draft standard for NGV on-board fuel container s, which was (1) based on exis ting standar ds, (2) had no limitation on materia ls or method of construct ion, (3) considered the int ernal and ext ernal container environmen
