ClassNK awards AiP to LH2 CCS developed by KHI

The 43-metre diameter containment tank has a capacity equivalent to the size of the largest tanks used in LNG carriers, which is designed to permit the transportation of cryogenic liquefied hydrogen in large volumes.

In addition, the system is designed to address a number of technical challenges identified by KHI during the construction of the Suiso Frontier LH2 carrier. ClassNK engaged in the classification survey during the construction of LH2 carrier, which has a 1,250cbm capacity.

The independent, self-supporting design with a structure capable of responding flexibly to thermal contraction that occurs when loading cryogenic liquefied hydrogen.

The design also features a newly developed, high-performance heat insulation system that mitigates boil-off gas (BOG) which occurs in response to heat ingress.

The system is designed to effectively utilize BOG as fuel to power the ship, which will also contribute to reduced CO2 emissions from liquefied hydrogen transport operations.

ClassNK noted that it carried out the design review of the newly developed CCS for a LH2 carrier based on its Part N of Rules for the Survey and Construction of Steel Ships incorporating the IGC Code, and its guidelines incorporating the IMO’s interim recommendations.

In addition, a comprehensive safety assessment of the CCS was conducted based on the HAZID risk assessment results, which has led to the issuance of the AiP.