World-first requirements for onboard CO2 capture systems using membrane separation method

Tokyo -  ClassNK has released "Guidelines for Onboard CO2 Capture and Storage Systems (Edition 2.0)" first in the world, which assumes onboard CO2 capture systems (OCCS) using membrane separation method which are expected to be applicable to a wide variety of vessel types. The guidelines can be supported the safety development, manufacturing, and installation of relevant system.

Capturing CO2 from ships' exhaust gas
Not only fuel transition, but interest in capturing CO2 from ships' exhaust gas is growing as a way to reduce GHG emissions, and the development of onboard systems for capturing and storing CO2 is being undertaken. 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.

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The newly issued Edition 2.0, 
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.

 The fundamental functional requirements for OCCS, 
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.
The guidelines are available to download via ClassNK's website www.classnk.com for those who have registered for the ClassNK "My Page".
https://www.classnk.or.jp/account/en/Rules_Guidance/ssl/guidelines.aspx

About ClassNK

ClassNK is dedicated to ensuring the safety of life and property at sea, and the prevention of pollution of the marine environment.To achieve this mission ClassNK will: Focus on delivering the highest quality classification services, by the highest quality personnel, while maintaining its totally independent third party, non-profit status.
Focus on the development of relevant rules, procedures and guidance, and maintain and develop its commitment to scientific and technological research and development.
Maintain and develop its global operations in line with the needs of clients using its services. ClassNK has earned an outstanding reputation for its long-standing dedication to safeguarding life and property at sea and preventing marine pollution through the establishment of universally recognized standards for the design, construction and maintenance of ships and other marine structures.

ClassNK , Onboard CO , OCCS,  World-First Guidelines , pollution