Nuclear power plant safety injection system simulation method and system based on risk guidance

Abstract

The invention discloses a nuclear power plant safety injection system simulation method and system based on risk guidance. The method comprises the steps of: determining and identifying a minimum cutset of safety injection system function demands, and determining an implementation principle, system setting and operation mode of the safety injection system; identifying weak links of the safety injection system through the probability theory, determining the importance degree of different design schemes of the safety injection system to the safety of a nuclear power plant, and giving optimization suggestions for system combination in the design of the safety injection system. The set of safety injection system design method based on risk guidance is formed by integrating the analysis of thedeterministic theory and the probability theory, the purposes of safety injection system setting minimization and safety performance maximization are achieved, and the construction cost of the nuclear power plant is further optimized while the safety of the nuclear power plant is guaranteed.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant safety design, in particular to a method and system for simulating a safety injection system of a nuclear power plant based on risk guidance. Background technique [0002] After the reactor coolant pipe breach accident condition (LOCA) occurred in the pressurized water reactor nuclear power plant, the reactor coolant was lost from the pressure vessel, which caused the reactor core fuel elements to lose coolant and burn out, further threatening the safety performance of the reactor; Or when the reactor rod control system fails to function, the power of the core fuel elements is too high and burned due to the loss of reactivity control, which further threatens the safety performance of the reactor. Therefore, it is necessary to set up a safety injection system for core reactivity control and LOCA accidents, to deal with the core reactivity control when the rod control system cannot be ad...

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Problems solved by technology

[0003] The design of the traditional safety injection system is mainly based on the cognition of determinism. According to the requirements of the safe injection water volume of the LOCA accident and the boron concentration requirement of the main steam pipe rupture accident under thermal shutdown, the design requirements of the safety injection system are put forward, but the safety injection is not considered. The optimal configuration of the system, so the safety injection system designed by the existing design method cannot achieve the maximum function and the optimal setting

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