Temperature compensation for compressed natural gas vehicle fueling

Designation Number:
NGV 4.3
Standard Type:
National Standard of Canada - Domestic
Standard Development Activity:
New Edition
ICS code(s):
75.200
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

This Standard details the safety and performance requirements for temperature compensation control used to prevent compressed natural gas (CNG) dispensing systems from exceeding a safe fill level of vehicle fuel storage container(s). This Standard contains safety performance guidelines for compressed natural gas fueling dispenser temperature compensation systems. It applies to newly manufactured dispensing systems and the field evaluation of existing dispensing systems designed primarily to allow for full fill and to avoid over-pressurization of vehicle fuel storage containers under operating temperature conditions as specified in this Standard.

This Standard applies to CNG fueling of vehicle containers with service pressures of P30 [20 700 kPa (3,000 psi)], P30HD [20 700 kPa (3,000 psi)], P36 [24 800 kPa (3,600 psi)], and P36HD [24 800 kPa (3,600 psi)]. P30HD and P36HD are designations used in accordance with CSA/ANSI NGV 1, and throughout the document the use of P30 and P36 are also applicable to P30HD and P36HD, respectively (see Annex A regarding applicable vehicle service pressures).

This Standard is applicable to the dispensing of only natural gas that meets quality specifications contained in ASTM D8080.

Project need:

The primary objective for the new edition is to further refine / define the temperature compensation testing procedure particularly for new compressed natural gas dispensers. This proposed New Edition is being developed at the request of the Natural Gas Transportation Technical Committee.

Note: The information provided above was obtained by the Standards Council of Canada (SCC) and is provided as part of a centralized, transparent notification system for new standards development. The system allows SCC-accredited Standards Development Organizations (SDOs), and members of the public, to be informed of new work in Canadian standards development, and allows SCC-accredited SDOs to identify and resolve potential duplication of standards and effort.

Individual SDOs are responsible for the content and accuracy of the information presented here. The text is presented in the language in which it was provided to SCC.