Oshima Shipbuilding and Fuji Electric have received a total of three approvals in principle (AiPs) for a design of a bulk carrier with a membrane-based onboard carbon capture and storage system (OCCS) and an 83,000m³ ammonia carrier with an IMO Type B tank.
The design approvals were issued by ClassNK to demonstrate feasibility of the concepts, from both regulatory and safety perspectives.
The AiPs for the OCCS-equipped bulk carrier were granted to Oshima Shipbuilding and Fuji Electric, based on ClassNK’s Guidelines for Onboard CO2 Capture and Storage System (Edition 2.0), which is considered to be the world’s first to include requirements for OCCS using membrane separation technology — an approach that is anticipated to have a lower power demand and smaller installation space than amine absorption. The concept design for this vessel was reviewed in accordance with these guidelines.
Approval for the 83,000m3 Ammonia Carrier with IMO Type B independent tank was granted to Oshima Shipbuilding. The IMO Type B independent tank defined in the IGC Code is said to offer advantages in cargo capacity and outfitting efficiency but requires a significantly high level of engineering sophistication compared with other cargo tank types. ClassNK conducted its review of this concept design based on Part N of its Rules and Guidance for the Survey and Construction of Steel Ships, which incorporates the IGC Code, along with relevant guidelines.
Following the reviews, ClassNK confirmed that both designs comply with the prescribed requirements and therefore issued the respective AiPs.
Image: Bulk carrier installed with membrane-based OCCS (credit: Oshima Shipbuilding)
