Development of New IMO Type B Tank Based on the Results of Cryogenic Material Property Tests Available to Purchase

As the LNG industry is rapidly growing, the demand of FLNG (Floating LNG) is also increasing. Since the medium to long-term forecasts predict a shortage of LNG supply, the introduction of offshore LNG production can be seen in the near future. In recent, DSME has developed the new IMO type B tank (ACTIB: Aluminum Cargo Tank Independent type B) considering the cryogenic material properties. This paper describes engineering works done during the ACTIB development. A lot of engineering works were carried out from the basic scantling of the tank to characteristic works for IMO type B tank such as thermal stress, crack propagation & fracture analysis and leak & drip tray design concept. As a result of study, DSME received AIP from DNV and could unveil the ACTIB to the market.