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ClassNK issues AiP for ammonia fuel supply system for oil tanker and container ship developed by Samsung Heavy

ClassNK has issued an Approval in Principle (AiP) for an ammonia fuel supply system for oil tanker and container ship developed by Samsung Heavy Industries (SHI).

Ammonia is expected to be used as a ship fuel for decarbonization since it does not emit CO2 when combusted. Meanwhile, adequate safety measures are imperative as ammonia is toxic to humans and corrosive to materials.

ClassNK has been involved in projects aiming for zero-emission ships using ammonia fuel in terms of safety assessment, and has issued its “Guidelines for Ships Using Alternative Fuels” as a necessary standard to minimize the risks related to ammonia fuelled ships for the ships, crews, and environment by stipulating requirements for installation, controls, and safety devices.

ClassNK carried out a review of a conceptual design of the system developed by SHI based on the part C of its “Guidelines for Ships Using Alternative Fuels”. Upon confirming they comply with the prescribed requirements, ClassNK issued the AiP.

Approval in Principle (AiP). At the initial stage of designing or before the specific target ship to be implemented is decided, the design is examined based on the existing regulations such as international conventions and ship classification rules, and an Approval in Principle (AiP) is issued as proof of conformity with requirements. It also prevents rework of regulatory aspects in the post-process, shortens the examination time at the time of class registration, and can be used as a technical basis for external appeal of the design status.


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