Patent ID: 9664338
Date: 2017-05-30
CPC Classifications: B65D,E04H,F17C,Y10T

Claim:
1. A method for constructing a low-temperature tank in which a low-temperature tank that stores Liquefied Natural Gas (LNG) is constructed on a previously determined construction site, comprising: a unit tank manufacturing step in which a plurality of unit tanks that are able to be connected to each other and that are each capable of storing LNG are manufactured at a factory that is distant from the construction site, the plurality of unit tanks constituting one inner tank; a transporting step in which the unit tanks are transported from the factory to the construction site; a foundation forming step in which a foundation is formed on the construction site; an inner tank assembly step in which the one inner tank is assembled on the foundation at the construction site by connecting together the plurality of unit tanks; an outer tank manufacturing step in which an outer tank is manufactured on the foundation around the one inner tank; and connecting a pumping apparatus to one unit tank from among the plurality of unit tanks, the pumping apparatus being configured to pump the LNG that has been stored in the inner tank to the outside of the inner tank and the outer tank, wherein the unit tanks are assembled in the inner tank assembly step such that heights of centers of bottom surfaces of the unit tanks decrease in a stepped arrangement and the unit tank having the lowest height of a center of a bottom surface is connected to the pumping apparatus.