ClassNK has released second edition of “Guidelines for Onboard CO2 Capture and Storage Systems”. It assumes onboard CO2 capture systems (OCCS) use of a membrane separation method which are expected to be applicable to a wide variety of vessel types. The guidelines can support the safety development, manufacturing, and installation of relevant systems.
Not only fuel transition, but interest in capturing CO2 from ships’ exhaust gas is growing as a way to reduce GHG emissions. Development of onboard systems for capturing and storing CO2 is also being carried out.
In 2023, ClassNK published the first edition of the “Guidelines for Onboard CO2 Capture and Storage Systems” which outlined requirements for OCCS using amine absorption method.
In the newly issued Edition 2.0, the guidelines have been expanded to include requirements for OCCS using membrane separation method which is lower energy requirement compared to amine absorption method and does not require a permanent supply of amine solution.
In addition to that, ClassNK has reorganized the fundamental functional requirements for OCCS, extracted the common requirements across different capture methods, and compiled them into a set of generic requirements that should apply regardless of the specific capture method.
You can download the new guidelines via ClassNK’s website.