Mitigation method and system for severe accidents in nuclear power plants

Abstract

The invention discloses a nuclear power plant serious accident mitigation method and system. The method comprises the following steps: S1, a signal measurement system (1) obtains measurement signals of various monitoring of a nuclear power plant in real time; S2, a signal conversion system (2) compares the measurement signals obtained in real time by the signal measurement system (1) with threshold motion signals stored in advance and corresponding to serious accident guiding rules; when comparison results are in accordance with some entry conditions in the serious accident guiding rules, entry signals of the guiding rules are output to a guiding rule prompt system (3); and S3, the guiding rule prompt system (3) receives the entry signals and gives prompt of the guiding rules corresponding to the entry signals to an operator in a predetermined mode. According to the invention, guiding rule consulting work by the operator is omitted; automatic monitoring of accident signals is realized; the operator is guided to rapidly complete accurate mitigating of serious accidents; and human delay or results of serious accidents due to humans are avoided.

Description

technical field [0001] The invention relates to the field of nuclear power safety, in particular to a method and system for mitigating severe accidents in nuclear power plants. Background technique [0002] Severe accident mitigation mainly refers to the necessary operations of nuclear power plant operators on the reactor core and core safety-related equipment and systems after a severe accident in a nuclear power plant to prevent large-scale melting of the core and ensure the integrity of the containment , to reduce the release of radioactivity to the environment, threatening the property and life safety of residents around the nuclear power plant. The main basis for operators to perform severe accident mitigation operations is the severe accident management guidelines of nuclear power plants (ie, severe accident mitigation operating procedures). Usually, the severe accident management guideline of nuclear power plants is a paper manual. When a severe accident occurs, the ...

AI Technical Summary

Problems solved by technology

[0003] In a severe accident state, it is difficult for the operator to quickly find the corresponding severe accident management guidelines in the paper manual based on the relevant signals, and even a delay of a few seconds or tens of seconds of mitigation will lead to a large-scale melting of the core and cause a serious accident as a result of

Images