| abstract |
A checkable pressure vessel (10) for containing a liquid, such as CNG, comprising: a generally cylindrical shape over the majority of the length of the vessel, at least one opening for discharging gas and discharging liquid, An additional outer composite layer (200) comprising at least one stainless steel layer as a first layer (100) in contact with the liquid, and at least one fiber-reinforced polymer layer not in contact with the liquid when liquid is contained in the container, Wherein the first layer is made of low-carbon stainless steel. |