Floating-type nuclear power generation system

The floating nuclear power generation system addresses the challenge of core meltdowns by employing a core catcher filled with ballast water and a communication valve to passively cool the reactor, ensuring effective meltdown resistance and safety.

JP2025134441AActive Publication Date: 2025-09-17ADVANCED FLOAT CO LTD
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Patent Information

Application Number
JP2024032338
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-03-04
Publication Date
2025-09-17
Estimated Expiration
2044-03-04

AI Technical Summary

Technical Problem

Nuclear power generation systems face challenges in effectively utilizing seawater to counter a core meltdown, especially when floating on the sea, as they lack the necessary mechanisms to passively cool the reactor without relying on external power sources.

Method used

A floating nuclear power generation system with a core catcher below the reactor, filled with ballast water from a bottom ballast tank, and a communication valve to allow seawater into the containment vessel, along with a sinking mechanism to minimize water loss and enhance cooling capabilities.

Benefits of technology

The system effectively withstands core meltdowns by using ballast water to cool the molten core and minimize water loss, ensuring stable cooling without external power, thus enhancing safety and resilience.

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Abstract

To provide a floating-type nuclear power generation system capable of advantageously resisting core meltdown.SOLUTION: The floating-type nuclear power generation system includes: a reactor; a turbine generator driven by steam generated by heat of the reactor; and a floating body in which the reactor and the turbine generator are arranged and which is moored on the sea, the floating body having, below the reactor, a core catcher filled with ballast water of a bottom ballast tank formed in the bottom portion of the floating body by a double-hull structure in the lower side.SELECTED DRAWING: Figure 8
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