Method and apparatus for nuclear power station equipment risk evaluation by computer

Abstract

This invention relates to a method and apparatus for nuclear power station equipment risk evaluation by computer. Wherein, using a computer to quantize the fault effect and store the information in a database; creating a logic relation between fault and facilities abnormity, as well as the abnormity and parameters; periodic acquiring device real-time data to substitute into the logic relation and calculate probable fault and risk; if over the early-warning value, producing alarm signal. This invention can monitor the plant for security, automatic evaluates risk to eliminate human factor, and obtains much accurate result.

Description

technical field [0001] The invention relates to an equipment management and maintenance method and device for a nuclear power plant. To be precise, a computer is used to realize risk and quantitative assessment of nuclear power plant equipment. Background technique [0002] For nuclear power plants, equipment failure is the main factor affecting the safety and stable power generation of nuclear power plants, which can cause downtime and shutdown of reactors, or endanger human safety and even lead to nuclear accidents. Equipment failure is the focus of nuclear power plant work. [0003] The current difficulties are: when there is an abnormal state of the equipment (the abnormality is generally manifested in the change of the operating parameters, such as the drop of the pump outlet pressure and the increase of the bearing temperature, but the equipment has not failed at this time), it is difficult to quickly judge the source of the abnormality, and it is very difficult It is...

AI Technical Summary

Problems solved by technology

The problem is that this kind of judgment is qualitative, such as "very high risk", "very small", etc., lacks quantitative evaluation standards, is greatly affected by personnel experience and quality, and has poor learnability and repeatability

Another problem is: the time for manual diagnosis and prediction is often long, and for some fast-growing old patterns, the fault often occurs before the diagnosis is completed

[0005] In this case, the risks hidden behind the abnormality of the equipment may be ignored, and the abnormality continues to develop, causing losses due to equipment failure; Introduce new faults (such as misalignment of rotating machinery)

At the same time, for nuclear power plant managers, it is impossible to quickly calculate and analyze the overall risk of nuclear power plants

[0006] In the case of a large number of equipment (nearly 100,000 units) and a limited number of technical experts, the traditional artificial fault prediction and risk assessment technology is increasingly unable to meet the needs of nuclear safety and stable power generation, especially for multiple nuclear power plants The power generation group is even more so

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