At Gastech 2022, DNV awarded an Approval in Principle (AiP) to Mitsui O.S.K. Lines, Ltd. (MOL) and Mitsubishi Shipbuilding Co., Ltd. (MHIMSB) for their design of a 50,000 CBM class liquefied CO2 (LCO2) carrier. Furthermore, DNV awarded an Approval in Principle (AiP) to Samsung Heavy Industries (SHI) for their new liquefied CO2 (LCO2) carrier design.
n particular, MOL and MHIMSB jointly designed the LCO2 vessel, with the concept study completed in November 2021. After conducting a HAZID risk assessment, both parties applied for the AiP which was granted by DNV according to the Class notation “1A Tanker for liquefied CO2”. The main focus of the DNV assessment has been the DNV Rules on Liquefied gas tankers (Pt.5 Ch.7 July 2021) as well as the IGC Code.
With regards to the AIP, presented at the Gastech 2022 Exhibition in Milan, DNV said it reviewed SHI’s design against the requirements of the IGC code and DNV guidelines applicable to CO2 carriers. SHI’s new system is expected to help the shipping industry be ready for future large-scale CO2 transportation demands as increasing numbers of carbon capture, utilization & storage (CCUS) projects evolve. The ship has optimized cargo space and ship performance by utilizing customized bi-lobe cargo tanks. It also features a re-liquefaction system that condenses vaporized and compressed CO2 by a refrigeration process. Once expanded, the CO2 is cooled and returned to the LCO2 tanks.