Industry Partners Bag ClassNK's Approvals for LCO2 Carrier, FLSU Designs

Knutsen NYK Carbon Carriers (KNCC), a subsidiary of NYK and Knutsen Group, has obtained Approval in Principle (AiP) from ClassNK for the design of liquified CO2 carriers (LCO2-EP carrier) that use the elevated pressure (EP) method to store and transport liquefied CO2 at ambient temperature.

ClassNK has carried out a design review of this ship in accordance with the Rules for the Survey and Construction of Steel Ships, and has issued an AiP after confirming that the ship meets the prescribed requirements.

The LCO2-EP carrier uses LCO2-EP Cargo Tank technology developed by KNCC to transport LCO2 in a stable state. Since there is no need to cool LCO2 to cryogenic temperatures, it is easy to handle and potentially reduces energy and costs during liquefaction.

In addition, NYK, KNCC, and ENEOS Xplora have developed a Floating Liquefied Storage Unit (FLSU) that combines the LCO2-EP Cargo Tank technology with the Isenthalpic Expansion Cooling & Liquefaction Process.

This process has been researched and developed in collaboration among the three companies.

ClassNK has issued an AiP for the FLSU following a review based on the standardized rules.

The FLSU is a pioneering concept that liquefies and temporarily stores CO2 that has been collected and