ANSI NGV1-2006 CSA NGV1-2006

American National Standard/ CSA Standard for Compressed Natural Gas Vehicle (NGV) Fueling Connection Devices

AMERICAN NATIONAL STANDARD ANSI NGV1-2006

CSA STANDARD CSA NGV1-2006

Second Edition - 2006

This Standard is based on the Standard for Compressed Natural Gas Vehicle (NGV) Fueling Connection Devices

ANSI/AGA NGV1-1994 • CGA NGV1-M94; ANSI/IAS NGV1a-1997 • CGA NGV1a-M97; and ANSI/IAS NGV1b-1998 • CGA NGV1b-M98

APPROVED

IGAC

Reaffirmed and Consolidated March 2, 2006

American National Standards Institute, Inc.

February 28, 1994, December 6, 1996 and

March 25, 1998 Interprovincial Gas Advisory Council Effective in Canada March 1, 1995

On Behalf of

the Natural Gas Vehicle Coalition

CSA AMERICA INC.

8501 East Pleasant Valley Road Cleveland, Ohio 44131

Standard Developer

CANADIAN STANDARDS ASSOCIATION

5060 Spectrum Way, Suite 100 Mississauga, Ontario, Canada L4W 5N6

Published - July 2006

Copyright © 2006 Canadian Standards Association

Permission is granted to republish material herein in laws or ordinances, and in regulations, administrative orders, or similar documents issued by public authorities. Those desiring permission for other republication should consult Canadian Standards Association, 5060 Specrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6.

Copyright © 2006 CSA America, Inc.

Permission is granted to republish material herein in laws or ordinances, and in regulations, administrative orders, or similar documents issued by public authorities. Those desiring permission for other republication should consult CSA America, Inc., 8501 East Pleasant Valley Road, Cleveland, Ohio 44131.

Canadian Standards Association

The Canadian Standards Association (CSA), under whose auspices this National Standard has been produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for-profit, nonstatutory, voluntary membership association engaged in standards development and certification activities.

CSA standards reflect a national consensus of producers and users — including manufacturers, consumers, retailers, unions and professional organizations, and governmental agencies. The standards are used widely by industry and commerce and often adopted by municipal, provincial, and federal governments in their regulations, particularly in the fields of health, safety, building and construction, and the environment.

Individuals, companies, and associations across Canada indicate their support for CSA’s standards development by volunteering their time and skills to CSA Committee work and supporting the Association’s objectives through sustaining memberships. The more than 7000 committee volunteers and the 2000 sustaining memberships together form CSA’s total membership from which its Directors are chosen. Sustaining memberships represent a major source of income for CSA’s standards development activities.

The Association offers certification and testing services in support of and as an extension to its standards development activities. To ensure the integrity of its certification process, the Association regularly and continually audits and inspects products that bear the CSA Mark.

In addition to its head office and laboratory complex in Toronto, CSA has regional branch offices in major centres across Canada and inspection and testing agencies in eight countries. Since 1919, the Association has developed the necessary expertise to meet its corporate mission: CSA is an independent service organization whose mission is to provide an open and effective forum for activities facilitating the exchange of goods and services through the use of standards, certification and related services to meet national and international needs.

L’Association canadienne de normalisation (CSA), sous les auspices de laquelle cette Norme nationale a été préparée, a reçu ses lettres patentes en 1919 et son accréditation au sein du Système de Normes nationales par le Conseil canadien des normes en 1973. Association d’affiliation libre, sans but lucratif ni pouvoir de réglementation, elle se consacre à l’élaboration de normes et à la certification.

Les normes CSA reflètent le consensus de producteurs et d’usagers de partout au pays, au nombre desquels se trouvent des fabricants, des consommateurs, des détaillants et des représentants de syndicats, de corps professionnels et d’agences gouvernementales.

L’utilisation des normes CSA est très répandue dans l’industrie et le commerce, et leur adoption à divers ordres de législation, tant municipal et provincial que fédéral, est chose courante, particulièrement dans les domaines de la santé, de la sécurité, du bâtiment, de la construction et de l’environnement.

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L’Association offre des services de certification et de mise à l’essai qui appuient et complètent ses activités dans le domaine de l’élaboration de normes. De manière à assurer l’intégrité de son processus de certification, l’Association procède de façon régulière et continue à l’examen et à l’inspection des produits portant la marque CSA.

Outre son siège social et ses laboratoires à Toronto, la CSA possède des bureaux régionaux dans des centres vitaux partout au Canada, de même que des agences d’inspection et d’essai dans huit pays. Depuis 1919, l’Association a parfait les connaissances techniques qui lui permettent de remplir sa mission d’entreprise, à savoir la CSA est un organisme de services indépendant dont la mission est d’offrir une tribune libre et efficace pour la réalisation d’activités facilitant l’échange de biens et de services par l’intermédiaire de services de normalisation, de certification et autres, pour répondre aux besoins de nos clients, tant à l’échelle nationale qu’internationale.

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Canadian Standards Association 5060 Spectrum Way, Suite 100Mississauga, Ontario,

Canada L4W 5N6

Pour plus de renseignements sur les services de

la CSA, s’adresser à Association canadienne de normalisation 5060, Spectrum Way, bureau 100 Mississauga, Ontario, Canada L4W 5N6

American National Standards Insititute

The American National Standards Institute (ANSI), Inc. is the nationally recognized coordinator of voluntary standards development in the United States through which voluntary organizations, representing virtually every technical discipline and every facet of trade and commerce, organized labor and consumer interests, establish and improve the some 10,000 national consensus standards currently approved as American National Standards.

ANSI provides that the interests of the public may have appropriate participation and representation in standardization activity, and cooperates with departments and agencies of U.S. Federal, state and local governments in achieving compatibility between government codes and standards and the voluntary standards of industry and commerce.

ANSI represents the interests of the United States in international nontreaty organizations such as the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). The Institute maintains close ties with regional organizations such as the Pacific Area Standards Congress (PASC) and the Pan American Standards Commission (COPANT). As such, ANSI coordinates the activities involved in the U.S. participation in these groups.

ANSI approval of standards is intended to verify that the principles of openness and due process have been followed in the approval procedure and that a consensus of those directly and materially affected by the standards has been achieved. ANSI coordination is intended to assist the voluntary system to ensure that national standards needs are identified and met with a set of standards that are without conflict or unnecessary duplication in their requirements.

Responsibility of approving American National Standards rests with the

American National Standards Institute, Inc.

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10036

Joint Natural Gas Vehicle Coalition Task Group/Canadian Gas Association Subcommittee For Compressed NGV Fueling Connection Devices

REPRESENTING REGULATORY AUTHORITIES:

Oscar Alonso Toros Topaloglu

Peter Priebatsch Martin Whicher

REPRESENTING GENERAL INTERESTS:

Andy Beregszaszy George Mallinos Nick White Robert Cumming (Alternate) Steve Takagishi

Preface

This standard is being developed for agencies in North America to use for examination, testing and certification of compressed Natural Gas Vehicle (NGV) fuelling nozzles and receptacles only. As such, the scope refers to nozzles and receptacles used in the NGV fueling system, and not to the system. The American Gas Association (A.G.A.) Requirements for Natural Gas Refueling Connection Devices (No. 1-90) and Canadian Gas Association Certification Requirement for NGV Nozzles and Receptacles (Draft CR

90-005) provided a basis for this standard.

A nozzle certified to this standard will be functionally compatible from a safety and performance perspective with all listed receptacles of compatible profile and system pressure. Similarly, a receptacle certified to this standard will be functionally compatible from a safety and performance perspective with all listed nozzles of compatible profile and system pressure.

Whereas there may be a multitude of nozzles and receptacles by a host of manufacturers, all of which for safety reasons must be compatible with each other, a series of “standard” receptacle profiles have been specified. These standard profiles incorporate the mandated design specifications (mating materials, geometry and tolerances) which must be utilized in the certification of a submitted nozzle or receptacle. The design shall be unique and not currently in commercial use and shall only be used for compressed natural gas.

Currently, three vehicle system service pressures may be operated in North America; 16 500 kPa (2400 psi), 20 700 kPa (3000 psi) and 24 800 kPa (3600 psi). Consequently, the nozzle and receptacle must be designed in a manner which will prevent a vehicle from being fueled by a dispenser station with a service pressure higher than the vehicle. However, it is desirable that a vehicle can be fueled by a dispenser station with a service pressure lower than the vehicle. This issue is addressed in the geometry of the nozzle and receptacle. All nozzles and receptacles shall be designed to have a service pressure of either 16 500 kPa (2400 psi), 20 700 kPa (3000 psi) or 24 800 kPa (3600 psi), as applicable.

The construction and performance of nozzles and receptacles are based on the observation that three main parameters affect user safety and system compatibility.

1. Service Pressure. Currently, three vehicle system service pressures may be operated in North America; 16 500 ka (2400 psi), 20 700 kPa (3000 psi) and 24 800 kPa (3600 psi). Consequently, the nozzle and receptacle must be designed in a manner which will prevent a vehicle from being fueled by a dispenser station with a service pressure higher than the vehicle. However, it is desirable that a vehicle can be fueled by a dispenser station with a service pressure lower than the vehicle. This issue is addressed in the geometry of the nozzle and receptacle. All nozzles and receptacles shall be designed to have a service pressure of either 16 500 kPa (2400 psi), 20 700 kPa (3000 psi) or 24 800 kPa (3600 psi), as applicable.

   
   

2. Disconnect Venting. Nozzles transferring fuel under high pressure must be fully and safely depressurized prior to being disconnected from the receptacle. This standard addresses three types of nozzles, described as follows:

   CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures 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 of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, Inc., 25 West 43rd Street, Fourth Floor, New York, N.Y. 10036, (212) 642-4900.

   
   

   EFFECTIVE DATE: An organization using this standard for product evaluation as a part of its certification program will normally establish the date by which all products certified by that organization should comply with this standard.

   Type 1 Nozzle - With a Type 1 Nozzle, the vent valve operating mechanism is integral to the nozzle. The term “integral” means that a single operation of a lever or operating mechanism first safely vents the gas trapped between the receptacle check valve and the nozzle inlet valve, and then safely disconnects the nozzle from the receptacle. This type nozzle is primarily intended but not restricted to use at public fill stations.

   
   

   Type 2 Nozzle - With a Type 2 nozzle, the vent valve operating mechanism is external to the nozzle. Venting is required prior to disconnection of this type of nozzle. This type of nozzle is intended to be used by trained operators only.

   
   

   Type 3 Nozzle - With a Type 3 nozzle, the fueling hose is automatically depressurized [typically below 340 kPa (50 psi)] at dispenser shutdown. The nozzle may vent low pressure gas between the receptacle check valve and the nozzle inlet valve coincident with the disconnection of the nozzle. This type of nozzle is intended to be used by trained operators only.

   
   

3. Design Life. Frequency of use is the final parameter to be considered. Since frequency of use will differ with the nozzle/receptacle application (i.e., public sector, fleet employee and residential), all receptacles will be tested at 10,000 connect/disconnect cycles for compliance with this standard. In addition, all nozzles shall be tested according to the following frequency use classifications, as applicable:

Class A Nozzle - This class specifies high frequency use, with a cycle life of 100,000. This equates to approximately 100 fills per day for 3 years.

Class B Nozzle - This class specifies medium frequency use, with a cycle life of 20,000 cycles. This equates to approximately 10 fills per day for 5 years.

ii

History Of The Development Of Standards For ANSI/CSA NGV1

(This History is informative and is not part of the standard.)

In 1985 a NGV Fuelling Probe Task Force was formed in Canada for the purpose of developing a certification requirement for an approved self-serve fuelling system. The key objective was to set a standard so that there would not be a proliferation of various proprietary, mutually-exclusive nozzles and receptacles. The Canadian task force drafted a set of test requirements, which were subsequently adopted by the Canadian Gas Association as laboratory requirements.

At this point, in 1988, the Canadian task force became inactive since one manufacturer’s device was adopted in Ontario and Alberta and was give provisional approval in Ontario by the Fuel Safety Branch in a full-scale field evaluation.

In 1988 a group of U.S. gas utilities formed the Natural Gas Vehicle (NGV) Coalition (the Coalition) to promote widespread use of compressed natural gas as a transport fuel. The Coalition organized committees to address technical, marketing and legislative issues which would affect the future expansion of a U.S. transportation industry fueled by natural gas.

It was recognized by the Coalition, and in Canada, that an important consideration in the successful commercialization of natural gas as a vehicle fuel was the issue of codes and standards (or the lack of codes and standards) pertaining to both fuel stations and vehicle fuel systems. A major goal is to achieve an organized family of coordinated codes, standards and regulations addressing natural gas vehicles and fueling stations.

One of the major areas of concern was the compatibility of vehicle fueling connections devices. It was acknowledged that if someone were to travel across North America in a natural gas vehicle, they would soon learn that many different types of NGV fueling connections devices existed. The problem this presents to the industry is that one manufacturer’s nozzle may not connect to another’s receptacle. In order to overcome this situation, an individual would be required to carry adapters to fuel the vehicle. Another concern is that most connection devices currently in use were adapted from other applications (i.e., hydraulics and pneumatics) and were not specifically designed for use with compressed natural gas.

At its July 19, 1990 meeting, the Coalition’s Fill Stations and Building Working Group established a Fueling Connection Device Task Group to develop a performance standard addressing NGV fueling connection devices.

At its August 15, 1990 meeting, the Fueling Connection Device Task Group initiated a proposed draft standard for NGV fueling connections devices. The draft standard was based on the American Gas Association Laboratories’ (A.G.A.) Requirements for Natural Gas Refueling connections Devices (No. 1-90) and Canadian Gas Association Certification Requirement for NGV Nozzles and Receptacles (CR 90-005). The draft standard to specified certain key devices, i.e., receptacle, nozzle and three-way valve. The Task Group agreed that to effectively address the issues of safety and compatibility: (1) fueling connection devices must be unique to the NGV industry, (2) the profile and interfacing surface of the receptacle must be non-proprietary, (3) the profile, tolerances and material hardness of the receptacle must be specified, and (4) a different profile must be specified for each vehicle fuel system pressure (i.e., 2400, 3000 and 3600 psig).

The standard was prepared during several meetings over a period of 9 months and involved 5 drafts.

iii

At its December 5-6, 1990 and March 6, 1991 meetings, the task group agreed that the draft NGV fueling connection device standard should be processed as an American National Standard in accordance with accredited canvass procedures of the American National Standards Institute (ANSI).

The American Gas Association Laboratories (AGAL), now International Approval Services (IAS), as an ANSI accredited canvass sponsor, agreed to seek expansion of its scope to facilitate processing the standard. On May 30, 1991, ANSI approved the expansion of AGAL’s canvass scope.

During the period of September 1991 through December 1991, AGAL initiated two ANSI Public Review submittals and concurrent canvass ballots to approve proposed AGA NGV1 as an American National Standard. Both ballots prompted comments which delayed the process.

From January 1992 to present, the task group and Canada sought to harmonize efforts, and established the Joint NGVC Task Group/CGA Subcommittee on Standards for Compressed Natural Gas Fueling Connections Devices to prepare harmonized requirements for a North American bi-National standard. Under a Gas Research Institute (GRI) contract, a Validation Test Program substantiated the test requirements and verified receptacle profiles detailed in the proposed AGA/CGA NGV1 standard.

Validation testing was performed by IAS-U.S. testing laboratories and was completed in July 1993. A report was prepared and submitted to the joint task group/subcommittee for consideration.

At its August 17-18, 1993 meeting, the joint task group/subcommittee reviewed the validation report and additional proposed revisions. Following consideration of all the issues, the task group/subcommittee voted affirmatively to initiate a third ANSI Public Review submittal and concurrent canvass ballot.

On December 1-2, 1993, a meeting was convened of the NGV Coalition/Canadian Gas Association Joint Task Group/Subcommittee on Standards for Compressed NGV Fueling Connection Devices to respond to comments received on the canvass ballot.

Following resolution of comments received on the third canvass ballot, the proposed standard was submitted to ANSI for consideration of approval. The first edition of the compressed natural gas vehicle fuelling connection device standard, was approved by the American National Standards Institute, Inc., on February 18, 1994 and the Interprovincial Gas Advisory Council on February 28, 1994.

This, the second edition, consists of a consolidation of ANSI/AGA NGV 1-1994 • CGA NGV 1-M94, Addenda “a” ANSI/IAS NGV 1a-1997 • CGA NGV 1a-M97 and Addenda “b” ANSI/IAS NGV 1b-1998 • CGA NGV 1b- M98. No charges were made to this document.

iv

Interprovincial Gas Advisory Council

(February, 1994)

M.G. Cherry British Columbia Ministry of Municipal Affairs (Chairman)

M. Philip Ontario Ministry of Consumer and Commercial Relations (Vice-Chairman)

J.W. Andrews Manitoba Labour (Alternate Member)

R.L. Culver Alberta Department of Labour (Alternate Member)

M.H. Dunnett New Brunswick Department of Advanced Education &

Labour

D. Eastman Newfoundland & Labrador Government

K. Fenning Alberta Department of Labour

R.H. Jackson Government of the Yukon Territory

I. Killacky British Columbia Ministry of Municipal Affairs (Alternate Member)

A. Leclerc Regie du batiment du Quebec (Alternate Member)

E. Marotta Labour Canada

R. McRae Government of the Northwest Territories

W.G. Mitchell Labour Canada (Alternate Member)

F. McCourt Prince Edward Island Department of Community & Cultural (Alternate Member)

Affairs

I.W. Mault Manitoba Labour

A. Mackay Government of the Northwest Territories (Alternate Member)

D. Price Government of the Yukon Territories (Alternate Member)

V.H. Perry Nova Scotia Department of Labour

R. Ross SaskPower Corporation

J. Samson Regie du Batiment du Quebec

D.C. Stewart Nova Scotia Department of Labour (Alternate Member)

A. Shaw New Brunswick Department of Advanced Education & Labour

(Alternate Member)

E.K. Taylor Ontario Ministry of Consumer and Commercial Relations (Alternate Member)

R.I. Walsh Prince Edward Island Department of Labour

K.G. Bales Canadian Standards Association (Secretary)

v

Contents

Part I Construction

Page

1. Scope 1

2. General Construction 2

3. Nozzles 2

4. Standard Receptacle Dimensions 4

5. Receptacles 4

6. Three-way Valve 5

7. Interchangeability 6

8. Instructions 6

9. Marking 7

Part II Performance

1. General 9

2. User/Machine Interface 9

3. Service Pressures 10

4. Dropping 10

5. Receptacle Protective Caps 10

6. Leakage At Room Temperature 11

7. Valve Operating Handle 11

8. Receptacle Vibration Resistance 11

9. Flow 12

10. Abnormal Loads 13

11. User Rocking/Twisting 14

12. Mounting Hardware Torque 15

13. Low And High Temperatures 15

14. Durability And Maintainability 16

15. Hydrostatic Strength 19

16. Materials 19

17. Corrosion Resistance 20

18. Deformation 20

19. Non-igniting Evaluation 20

20. Pressure Tight Protective Caps 21

Tables

Table I Nozzle Frequency of Use 30

Table II 30

Figures

Figure 1 P36 Receptacle 32

Figure 2 P36 Receptacle 33

Figure 3 P24 Receptacle 34

Figure 4 Test Arrangement for Dropping Test 35

Figure 5 35

Figure 6 Wear Pattern Test Fixture - 2400. 36

vii

Contents (Continued)

Figure 7 Wear Pattern Test Figure - 3000. 37

Figure 8 Wear Pattern Test Fixture - 3600. 38

EXHIBIT A NGV1 P36 Test Fixture 39

EXHIBIT B NGV1 P30 Test Fixture 41

EXHIBIT C NGV1 P24 Test Fixture 43

EXHIBIT D Fueling Receptacle Profile 45

EXHIBIT E List Of Reference Standards 47

Part III Manufacturing And Production Test Plan 49

Part IV Definitions 51

Appendix A List Of U.S. And Canadian Publications Related To Compressed Natural

Gas Vehicle Equipment And Accessories/Components 53

Appendix B Table of Nozzle Characteristics 54

Appendix C Receptacle Profile 55

viii

American National Standard/ CSA Standard for Compressed

Natural Gas Vehicle (NGV) Fueling Connection Devices

Part I: Co nstructio n

1. Scope

   1.1.1

   This standard applies to newly produced compressed Natural Gas Vehicle (NGV) fueling connection devices, hereinafter referred to as devices, constructed entirely of new, unused parts and materials. NGV fueling connection devices shall consist of the following components, as applicable:

   
   

   1. Receptacle and protective cap (mounted on vehicle) (see 1.5, Receptacles);

      
      

   2. Nozzle (see 1.3, Nozzles); and/or

      
      

   3. Three-way valve (external to nozzle and mounted in the fuel dispenser system) (see 1.6, Three-Way Valve).

1.1.2

This standard applies to devices which have a service pressure of either 16 500 kPa (2400 psi), 20 700 kPa (3000 psi), or 24 800 kPa (3600 psi), hereinafter referred to in this standard as the following (see 1.9.1-c):

“P24” - 16 500 kPa (2400 psi)

“P30” - 20 700 kPa (3000 psi)

“P36” - 24 800 kPa (3600 psi)

1.1.3

This standard applies to devices with standardized mating components (see 1.3.9, 1.5.6 and 1.7, Interchangeability.)

1.1.4

This standard applies to devices which (1) prevent natural gas vehicles from being fueled by dispenser stations with service pressures higher than the vehicle, and (2) allow natural gas vehicles to be fueled by dispenser stations with service pressures equal to or lower than the vehicle fuel system service pressure.

1.1.5

All dimensions used in this standard are in metric units [International System of Units (SI)], unless otherwise specified. If a value for measurement, as given in this standard, is followed by an equivalent value in other units, the first stated value is to be regarded as the specification.

1