ClassNK issues AiP for liquefied hydrogen carrier developed by Kawasaki Heavy Industries

Hydrogen is expected to be used as a clean energy source to realise a decarbonized society as its burning does not emit carbon dioxide (CO₂). To contribute to the maritime transportation of hydrogen and usage for marine fuel, which is anticipated to expand its use worldwide, ClassNK has worked on the establishment of necessary standards and certification.

In addition to class registration of the world’s first liquefied hydrogen carrier, SUISO FRONTIER, of a 1250 m³ carrying capacity built by Kawasaki in line with its rules and guidelines, ClassNK has issued an AiP for the design of the Cargo Containment System (CCS) with a capacity of 40 000 m³ class per tank developed by the company in 2021 for use on a large liquefied hydrogen carrier.

Further to this AiP for CCS, ClassNK has issued AiPs for Cargo Handling Systems (CHS), which are key design elements of the vessel, and dual-fuel main boilers that use hydrogen boil-off gas as fuel, respectively.

ClassNK also examined the integrated design of a 160 000 m³ large liquefied hydrogen carrier equipped with four of the above-mentioned cargo containment systems, and issued an AiP to confirm its feasibility as a ship. Based on those three AiPs for CCS, CHS and dual-fuel main boilers issued already, and the verification of the ship arrangement, hull structure/ stability, power generation/ distribution system, and the comprehensive hydrogen fire protection and extinction philosophy, it is confirmed that large-scale hydrogen transportation with this design is possible to realise.

During the examination, ClassNK carried out the design review of the liquefied hydrogen carrier based on its Part N of Rules for the Survey and Construction of Steel Ships incorporating the IGC Code, and its Guidelines for Liquefied Hydrogen Carriers incorporating the IMO’s interim recommendations for Carriage of Liquefied Hydrogen in Bulk. In addition, a comprehensive safety assessment was conducted based on the HAZID risk assessment results, which has led to the issuance of the AiP.

ClassNK will actively continue to take part in advanced initiatives toward decarbonisation and also support the decarbonisation of the entire maritime industry by incorporating the knowledge gained through collaboration with frontrunners into rules and guidelines.

Read the article online at: https://www.globalhydrogenreview.com/hydrogen/06052022/classnk-issues-aip-for-liquefied-hydrogen-carrier-developed-by-kawasaki-heavy-industries/