CSA 12 6-2004 Vehicle Refuelling Appliances (Second Edition).pdf

1、CSA 12.6-04(reaffirmed 2014)Vehicle Refuelling AppliancesLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers repre

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16、th the CSA Directives and guidelines governing standardization and are published in CSAs periodical Info Update, which is available on the CSA Web site at www.csa.ca. CSA 12.6-04 Canadian Standards Association viii February 2004 Foreword The Canadian Standards Association (CSA) develops standards un

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28、ada M9W 1R3. Canadian Standards Association Vehicle Refuelling Appliances February 2004 1 CSA 12.6-04 Vehicle Refuelling Appliances 1 Scope 1.1 This Standard applies to independently operating gas compressor packages designed for installation in accordance with (a) CAN/CSA-B149.1 when used for filli

29、ng vehicles; or (b) CSA B108 when used for filling gas storage or piping systems. 1.2 This Standard applies to independently operating gas compressor packages that are (a) intended to be used for natural gas only; (b) intended for installation only in non-hazardous locations; and (c) designed so as

30、not to create a hazard through leakage. 1.3 This Standard applies to gas compressor packages that are (a) certified as a system for the direct fuelling of vehicles. In this package the system includes components necessary to transfer fuel to a vehicle such as breakaway devices, delivery hoses, and f

31、uel transfer nozzles. Nozzles, hose assemblies, and breakaway devices are not interchangeable between the P30 system and other pressure systems; or (b) certified for use with a piping system or to fill gas storage but not connected to a vehicle. In such cases, the certification need not include comp

32、onents such as the breakaway device, delivery hose, or fuel transfer nozzle. 1.4 This Standard applies to multiple-hose gas compressor packages and multiple accessories (as covered under the Scope) that form a part of the system. 1.5 This Standard applies to compressor packages intended for use on a

33、 system voltage of 600 V or less, designed to be used in accordance with the Canadian Electrical Code, Part I. 1.6 A compressor package is investigated under this Standard for reliable and safe operation at ambient temperatures of 40 C (40F) and the manufacturers declared maximum ambient temperature

34、 rating; this declared rating is not less than 40 C (104F). 1.7 This Standard is written in SI (metric) units. The yard/pound units in parentheses are for information only. CSA 12.6-04 Canadian Standards Association 2 February 2004 2 Reference Publications This Standard refers to the following publi

35、cations, and where such reference is made, it shall be to the edition listed below. CSA (Canadian Standards Association) B51-97 Boiler, Pressure Vessel, and Pressure Piping Code B108 (under development) Natural Gas Fuelling Stations Installation Code CAN/CSA-B149.1-00 Natural Gas and Propane Install

36、ation Code C22.1-02 Canadian Electrical Code, Part I (19th edition) CAN/CSA-C22.2 No. 0-M91 (R2001) General Requirements, Canadian Electrical Code, Part II C22.2 No. 0.4-M1982 (R1999) Bonding and Grounding of Electrical Equipment (Protective Grounding) C22.2 No. 0.6-M1982 (withdrawn) Flammability Te

37、sting of Polymeric Materials C22.2 No. 0.8-M1986 (R1999) Safety Functions Incorporating Electronic Technology C22.2 No. 0.12-M1985 (R1999) Wiring Space and Wire Bending Space in Enclosures for Equipment Rated 750 V or Less CAN/CSA-C22.2 No. 94-M91 (R2001) Special Purpose Enclosures C22.2 No. 236-199

38、5 (R1999) Heating and Cooling Equipment ANSI/IAS (American National Standards Institute/International Approvals Service) (IAS Standards and Codes are now published by CSA) ANSI/IAS NGV 4.4/CSA 12.54-M99 Breakaway Devices for Natural Gas Dispensing Hoses and Systems ASTM (American Society for Testing

39、 and Materials) A 525-91B Specification for General Requirements for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process CGA (Canadian Gas Association) (CGA Standards and Codes are now published by CSA) CAN1-2.21-M85 (R1996) Gas-Fired Appliances for Outdoor Installation Canadian Standards A

40、ssociation Vehicle Refuelling Appliances February 2004 3 3 Definitions The following definitions apply in this Standard: Blowdown system an integral component system of the VRA designed to reduce the delivery side pressure (up to and including the fuelling probe and the space between the vehicle rec

41、eptacle and check valve) from operating level to 517 kPa (75 psig) or less at the end of every fuelling cycle. Note: This allows for safe and easy disconnection of the refuelling hose from the vehicle by the VRA user. The system may also depressurize the compressor to allow easier starting. The syst

42、em includes means to contain the expanded volume of high pressure gas necessary to achieve the pressure reduction. Declared maximum ambient temperature rating (DMATR) the allowable maximum ambient temperature during operation, as declared by the manufacturer. Hazard a condition in which there is a p

43、ossibility of having a flammable or explosive atmosphere. Non-hazardous condition a condition in which there is no possibility of having a flammable or explosive atmosphere. Pressure Delivery pressure (as applied to NGV refuelling systems) the settled pressure of the delivered gas. See Clause 4.7.2

44、for applicable equations. Design pressure (as applied to a pressure piping system or part of a pressure piping system) the pressure used to determine the minimum permissible thicknesses or pressure rating of all piping, tubing, fittings, and pressure vessels in the system. Note: The set-to-open pres

45、sure of pressure-relieving devices protecting the system is not to be greater than the design pressure. Operating pressure (as applied to a pressure piping system or part of a pressure piping system) the highest pressure at which the system, or the specified part of a system, normally operates. Note

46、: It should be at a suitable level below the set-to-open pressure of the pressure-relieving means, protecting the system so as to prevent frequent opening of the pressure-relieving means. Service pressure the settled pressure at a uniform gas temperature of 21 C (70F) and full gas content. Note: Ser

47、vice pressure is the pressure for which the equipment has been constructed, under normal conditions. It is also referred to as nominal service pressure or working pressure. Nominal service pressures are P30, 20 700 kPa (3000 psi), or P36, 24 800 kPa (3600 psi), at 21 C (70F). Settled pressure the ga

48、s pressure at which a given settled temperature is reached. Pressure-relieving means an automatic device that opens a relief vent when the pressure is above a predetermined value. Settled temperature the uniform gas temperature after any change in temperature caused by filling has dissipated. Vehicl

49、e refuelling appliance (VRA) a natural gas compressor package not containing gas storage, having a flow rate not in excess of 0.3 m3/min (10 CFM) (corrected to standard conditions of 101.3 kPa at 15 C (30 in Hg and 60F) and intended for unattended refuelling of vehicles, filling of gas storage facilities, or supplying a piping manifold system. CSA 12.6-04 Canadia