ISOにおける天然ガス自動車用高圧ガス容器の基準化の動向

抄録

This paper introduces the acitivity of standardization of high pressure cylinders for natural gas vehicles at ISO.
Natural gas vehicles have been recently high lighted as a low emission vehicle and a alternative fuel vehicle in the world. Natural gas vehicles have to mount high pressure cylinders for gas storage tanks. As the total number of natural gas vehicles has incresed, international standard for these cylinders for natural gas vehicles has been requested.
On the basis of these request, ISO started working group activity to make a draft of standard for these cylinders. Thirteen countries including Japan have taken a part in this working group. Last winter, draft of the standard has offered to a parent committee.
This draft involves new technologies such as filament wound cylinders with not only metal liner but plastic liner and new design philosophy such as fracture mechanics. These new philosophies are still controversial at working group because of shortage of both results of actual use and background technical data. Anyhow, it is expected that more significant discussion for standardization of cylinders for natural gas vehicles will be made based on offered draft.