Core catcher having an integrated cooling path

Abstract

The object of the present invention is to provide a core catcher having an integrated cooling path, which comprises a structure able to effectively collect, retain and cool molten core material discharged through a damaged part of a nuclear reactor pressure container during a major incident in a nuclear power station. To this end, the present invention is a core catcher which is disposed underneath the nuclear reactor pressure container in order to retain and cool molten core material discharged through a damaged part of the nuclear reactor pressure container and prevent interaction between the molten core material and the pressure-holding structure of the reactor building during a major incident in the nuclear power station, and which comprises: a main container in the shape of an inverted roof which is provided underneath the nuclear reactor pressure container and collects the molten core material; and a lower structure which is disposed below and outside the main container with supports disposed at scattered points placed in between, thereby forming a cooling path having a predetermined spacing for eliminating the heat of the molten core material.

Description

technical field [0001] The present invention relates to a core catcher with integrated cooling passages, and more particularly to a reactor core melt that is released through the damaged part of the nuclear reactor pressure vessel by effectively collecting, storing and cooling the high-temperature reactor core when a major accident occurs in a nuclear power plant, so as to A core catcher with integrated cooling channels to maintain the robustness of the nuclear reactor building by preventing erosion caused by the interaction of the reactor core melt with the nuclear reactor building pressure holding structures. Background technique [0002] Although the possibility of occurrence is very small, when a major accident occurs in a nuclear power plant, there is a possibility that the reactor core melt will be released from the hole in the lower part of the nuclear reactor through the damaged part of the nuclear reactor pressure vessel. Here, the reactor core melt refers to a high...

AI Technical Summary

Problems solved by technology

[0008] However, since the above-mentioned prior art core catcher is configured as a cooling pipeline form in which the cooling channels are separated from each other, the channel cross-sectional area is small and the channel resistance is relatively large. The time of high-temperature reactor core melt is prolonged and it is difficult to respond quickly in the event of an accident

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