HYDRAULIC CONTROL UNIT AND METHOD OF SHUTTING DOWN NUCLEAR REACTOR USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a hydraulic control unit and a method of shutting down a nuclear reactor using the same.SOLUTION: A method of shutting down a nuclear reactor may include a step of compressing a scram gas that is in fluid communication with a scram accumulator 102. The scram accumulator defines a chamber therein and contains bellows within the chamber. The bellows are configured to hold a scram liquid in isolation from the scram gas. The scram gas exerts a compressive force on the bellows in a form of stored energy. The method may additionally include a step of releasing the stored energy in response to a scram signal such that the scram gas expands into the chamber of the scram accumulator to compress the bellows and expel the scram liquid from the scram accumulator to insert control rods into a core of the nuclear reactor.SELECTED DRAWING: Figure 1