France’s Classification Society for Spherical Cargo Tank System Approve LCO2 Carriers
Mitsubishi Shipbuilding Co., Ltd., a part of Mitsubishi Heavy Industries (MHI) Group, has acquired Approval in Principle (AIP)(Note1) from the French classification society Bureau Veritas (BV) for a spherical cargo tank system for liquefied CO2 (LCO2) carriers. A presentation ceremony was held on June 7 at the Metropolitan Expo exhibition center in Athens, Greece, venue for the international shipping exhibition Posidonia 2022.
LCO2 carriers transport liquefied CO2 gas in cargo tanks in a low-temperature, high-pressure state. For that reason, independent Type C tanks as defined by the IGC Code(Note2) are typically used for the cargo tank system of such vessels. Until now, various tank structures have been available, including cylindrical, bilobed and trilobed designs. Now, Mitsubishi Shipbuilding has succeeded in developing a spherical cargo tank system for LCO2 carriers, applying its advanced technologies in structural analysis and material evaluation cultivated through the design and construction of liquefied natural gas (LNG) carriers equipped with spherical tanks. Development of the new spherical structure for LCO2 carriers resulted in acquisition of the AIP from BV.
Compared with cylindrical, bilobed and trilobed options, spherically shaped tanks offer greater structural strength against internal pressure of the tank. The adoption of Mitsubishi Shipbuilding’s spherical cargo tank system is expected to further optimization of ship arrangement and enhance the economic performance of LCO2 carriers.
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