FIELD: gas storage.
SUBSTANCE: group of inventions relates to storage (1) of liquefied gas and to sealed and heat-insulating tank (71). The tank comprises a loading and unloading opening (10) with a top wall (23) of the cover, a bottom wall (22) of the cover and a heat-insulating structure (24) located between the bottom wall (22) of the cover and the top wall (23) of the cover. The tube (30) and the upper wall (23) of the lid are made of dissimilar iron-based alloys, while one locking protrusion (50) extending from the upper wall (23) of the lid is hermetically attached, directly or indirectly, to the lower wall (22) covers.
EFFECT: increased tightness and strength of the tank.
16 cl, 7 dwg
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