Abstract
IHI Plant Services are developing conventional flat-bottomed cylindrical type storage tanks with a larger capacity. However, this type storage tank with about 40,000 tons or more can’t be constructed, because of possibility that stress corrosion cracking (SCC) may occur. And also periodic open inspection is required in case of this type.
Therefore, in order to solve the problems that the above-mentioned large capacity cannot be constructed and periodic open inspection is required, we are developing a prestressed concrete sidewall membrane storage tank as a new concept type storage tank for storing liquefied ammonia. In this paper, we describe the problems and countermeasures in the development of PC membrane storage tanks.
