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A method and system for simulating a safety injection system of a nuclear power plant based on risk guidance

A safety injection and system simulation technology, applied in the field of risk-guided nuclear power plant safety injection system simulation, can solve the problems that the safety injection system cannot achieve the maximum function, optimize the settings, and do not consider the optimal configuration of the safety injection system, etc., to achieve Improved safety and economy, wide application range, and minimized settings

Active Publication Date: 2022-03-01
NUCLEAR POWER INSTITUTE OF CHINA
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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

Method used

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  • A method and system for simulating a safety injection system of a nuclear power plant based on risk guidance
  • A method and system for simulating a safety injection system of a nuclear power plant based on risk guidance
  • A method and system for simulating a safety injection system of a nuclear power plant based on risk guidance

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Embodiment 1

[0038] Compared with the traditional design of safety injection system based on determinism, this embodiment comprehensively considers all accident conditions with safety injection system, and combines the probability theory method to optimize the function of safety injection system, and proposes a risk-based Guided approach to simulation of safety injection systems in nuclear power plants.

[0039] The method in this embodiment is mainly used to maintain the water content and reactivity of the reactor under accident conditions, so as to ensure the safety of the reactor. In terms of design, starting from the realization of its main functions, based on deterministic analysis and guided by risk guidance, a complete design method for safe injection system is established.

[0040] Such as figure 1 As shown, the method of the present embodiment includes the following steps:

[0041] 1. Identify design basis accidents and design extension conditions in nuclear power plants that re...

Embodiment 2

[0051] Based on the simulation method proposed in the above-mentioned embodiment 1, such as figure 2 As shown, this embodiment proposes a risk-guided nuclear power plant safety injection system simulation system, which includes a deterministic analysis module, a probability theory analysis module and an optimization module.

[0052] Among them, the deterministic analysis module is used to identify accidents that require safe injection function in nuclear power plants; analyze the restrictive requirements of different accidents on safe injection flow and boron concentration, and determine the minimum cut set of functional requirements of safe injection system; according to the safety injection The functional requirements of the system form the preliminary safety injection system design scheme;

[0053] The probability theory analysis module is used to establish the fault tree model of the safety injection system according to the preliminary design scheme of the safety injectio...

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Abstract

The invention discloses a method and system for simulating the safety injection system of a nuclear power plant based on risk guidance. The method of the invention identifies the minimum cut set of the functional requirements of the safety injection system through determinism, and determines the realization principle, system setting and operation of the safety injection system Methods: Identify the weak links of the safety injection system through probability theory, determine the importance of different design schemes of the safety injection system to the safety of nuclear power plants, and propose optimization suggestions for the system combination in the design of the safety injection system. The present invention integrates the analysis of determinism and probability theory to form a set of safety injection system design method oriented by risk guidance, realizes the goal of minimizing safety injection system settings and maximizing safety performance, and further optimizes while ensuring the safety of nuclear power plants The cost of building a nuclear power plant.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21D3/00G21D3/04
CPCG21D3/002G21D3/04Y02E30/00
Inventor 邱志方邓坚张航党高健曾未李喆丁书华邓纯锐陈伟蒋孝蔚张丹陈宏霞喻娜陈宝文张舒
Owner NUCLEAR POWER INSTITUTE OF CHINA
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