Abstract:
An apparatus and method of manufacturing a fuel storage tank for a fuel cell system used for storing various pressurized fluids having separate permeation characteristics for reducing permeation leakage during various temperature and pressure cycles. The fuel storage tank comprises a formed liner to define an inner cavity, as well as a boss connected to the liner, a reinforcement structure formed around a portion of the boss and the liner, a permeation bag affixed to a first securing member and inserted into the inner cavity of the liner. The first securing member is coupled with the boss and a second securing member is assembled to the boss adjacent the first securing member to secure a fluid tight connection between the permeation bag, the liner and the boss.