Method for retrospecting serious accident process of nuclear power plant

Abstract

The invention relates to a method for retrospecting a serious accident process of a nuclear power plant. By adopting the method provided by the invention, when a serious accident occurs in the nuclear power plant, the originating event type, the originating event parameter and the system response information of the serious accident can be quickly diagnosed. Serious accident process diagnosis information obtained by backtracking is input into a serious accident integrated analysis program, and prediction information of further development of the accident process is obtained, so that positive and negative influence evaluation is provided for intervention operation of an operator. By adopting the method provided by the invention, automatic diagnosis is realized, and manual intervention is not needed. Meanwhile, the method also provides time diagnosis, namely system response time diagnosis, of the head events in the serious accident process of the accident sequence, and analyzes the influence of the delay operation time of each head event of the accident sequence on the serious accident process.

Description

technical field [0001] The invention belongs to the implementation field of severe accident management guidelines of nuclear power plants, and relates to a method for tracing back the serious accident process of nuclear power plants. Background technique [0002] Severe Accident Management Guidelines (SAMG) is a guiding management document for the staff in the main control room and technical support center to take measures to mitigate the consequences of core damage accidents in the event of a severe accident in a nuclear power plant. Typical of many decisions in the Severe Accident Management Guidelines is an assessment of the potential negative impact of the proposed action. One of the key factors for the successful implementation of SAMG is that the technical support personnel quickly diagnose the severe accident process, diagnose the severe accident initiating event, initiating event parameters, and the response of the nuclear power plant system. However, in the emergen...

AI Technical Summary

Problems solved by technology

[0007] However, there are some deficiencies in the existing retrospective methods for the process of these serious accidents: 1) The emergency operation procedures can only address some specific accidents, that is, the accidents that can diagnose the cause of the accident. The cause of the accident; and only the category of the initiating event can be diagnosed, and the parameters of the initiating event cannot be diagnosed specifically

2) The intelligent diagnosis method can diagnose the type of initiating event and its parameters, which is stronger than the emergency operating procedures, but it does not diagnose the response of the nuclear power plant system

3) Manual records can only record the system response in the course of a serious accident, but cannot diagnose the initiating event; and because it is isolated data, it is difficult to integrate with the electronic information system

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