ALiquefied Natural Gas Storage TankorLNG Storage Tankis a specialized type of storage tank used for the storage of Liquefied Natural Gas. The common characteristic of LNG Storage tanks is the ability to store LNG at the very low temperature of -162 °C (-260 °F).LNG storage tanks can be built in ground, above ground or in LNG carriers.LNG storage tanks have double containers, where the inner contains LNG and the outer container contains insulation materials.