Abstract: As the national demand for chemical materials continues to increase, the storage capacity of conventional spherical tanks can no longer meet the production turnaround needs of the device. The steel cryogenic full-containment tank has become the preferred way for chemical plants to store olefins owing to its advantages of small footprint, large storage capacity, safety and efficiency, short construction cycle and low cost.Its installation process has a significant impact on the overall construction schedule, safety and quality control management of the storage tanks.Taking the 100,000 m³ steel cryogenic full-capacity tank as an example, this paper mainly introduces the construction process of installation in regular order for the wall plate of cryogenic tanks with three-layer tank wall. It specifically describes the installation and construction technology of the outer tank wall plate, the intermediate tank wall plate and the inner tank wall plate of the trimetallic wall cryogenic storage tank. This technology can provide reference for the installation of similar storage tanks.

Key words: cryogenic storage tank, three-layer tank wall, installation technology