ABS clears path for nuclear reactor integration on cargo ships

US-based classification society American Bureau of Shipping (ABS) has awarded an approval in principle (AiP) for the integration of a nuclear reactor in a cargo vessel propulsion system.

IMAGE: A concept design developed as part of ABS study on nuclear propulsion in commercial vessels. ABS

The propulsion system has been developed by a consortium led by the Massachusetts Institute of Technology (MIT).

The design uses a synthetic fluid to carry heat from the reactor core and focuses on micro-scale thermal outputs of 10 to 20 megawatts.

The concept operates on “near-atmospheric operating pressure,” enabling lighter reactor vessels, modular construction and easier transport. “ABS reviewed the reactor-to-machinery interface based on class requirements,” it said.

The consortium also includes offshore engineering company HD Korea Shipbuilding & Offshore Engineering (HD KSOE) and Greece-based shipping company Capital Maritime Group.

Interest in nuclear energy for maritime applications has been gaining momentum in recent years, with industry players exploring its potential for ship propulsion as well as offshore power generation.

Earlier this month, the International Atomic Energy Agency launched a new initiative aimed at supporting the deployment of small modular nuclear reactors on commercial ships and floating nuclear power plants.

By Aparupa Mazumder

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