Safety is one of the concerns which may limit a fast and large increase in the use of GHz as a fuel for engines in the future. Furthermore, for a given autonomy of a vehicle, the choice of a storage pressure of several hundreds of bars will significantly reduce the volume of the necessary tank(s). Whatever this pressure and whatever the volume of the tank(s), the storage System must be designed in such a way that the consequences of an accident, in which this system would be submitted to a thermal or mechanical impact, would be as low as possible.