ClassNK has released ‘Guidelines for Onboard CO2 Capture and Storage Systems (Edition 2.0)’, said to be the first such documentation concerning onboard carbon capture systems (OCCS) using the membrane separation method, which is expected to be applicable to a wide variety of vessel types.
The guidelines support the safety, development, manufacturing, and installation of relevant system. Interest in capturing CO2 from ships’ exhaust gas is thought to be growing as a way to reduce GHG emissions, and the development of onboard systems for capturing and storing CO2 is underway. In 2023, ClassNK published the first edition of its 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 the membrane separation method, which has a lower energy requirement compared to the amine absorption method and does not require a permanent supply of amine solution.
In addition, ClassNK has reorganised the fundamental functional requirements for OCCS, extracted the common requirements across different capture methods, and compiled these into a set of generic requirements that should apply regardless of the specific capture method.
The guidelines are available to download for registered users of ClassNK’s website.
