Browse Publications Technical Papers 2005-01-1681
2005-04-11

Demonstration of the Durability of TUFFSHELL™ CNG Fuel Tanks 2005-01-1681

Five type 4 all-composite compressed natural gas (CNG) fuel tanks produced in 1994 were acquired to study the effects of time and environmental exposure. Tank durability was demonstrated by the ability of the tanks to meet or exceed the ANSI/CSA NGV2-20001 standards after 9 years of field service. All tanks passed the NGV2-2000 standard production test requirements, including hydrostatic pressurization testing and standard leak testing. NGV2-2000 design qualification tests were performed on three of the tanks. Design qualification testing included liner and composite mechanical properties, cyclic pressurization, burst testing, and permeation testing as defined by NGV2-2000. All tanks exceeded the NGV2-2000 test requirements and exhibited no adverse effects from time, environment, and cyclic pressurization.

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