USA

The 2007 version of NGV2, American National Standard for Compressed Natural Gas Vehicle (NGV) Fuel Containers, is now available from CSA America.  Major changes since the 2000 edition include: 

• a new definition of “service pressure,”
• allowance for maximum container service life up to 25 years,
• specifying that containers should tolerate up to 2.0% hydrogen in natural gas,
• changing the Ambient Cycling test minimum failure requirement to 750 times the container service life in years rather than 750 times the design life with a minimum of 11,250 cycles for all containers, and
• requiring that the container fail by leakage in the Leak-Before-Break pressure cycling test or exceed 2250 times the design life in cycles rather than 45,000 cycles.

This latest version corrects editorial errors identified by the NGVAmerica's NGV2 Advisory Group.

Free electronic copies are available to all CSA Participation Program members (Login at the “Participant Private Area” at https://member.csa.ca/sdow/p_privatearea/PPAlogin.asp, and click on “Standards publications” to download standards). 

CSA also has a limited number of corrected NGV 2-2007 hard copies available.  If you would like to purchase a copy, go to http://www.csa-america.org/, click on “Buy Standards” and when you get to the appropriate “Shop CSA” page, type in “NGV 2” in the “Products” window.