Method for improving safety performance analysis of nuclear power plant by embedding discrete dynamic event tree

A technology for safety performance and nuclear power plants, applied in data processing applications, special data processing applications, instruments, etc., to achieve the effects of reducing conservatism, improving safety and economy, and improving analysis efficiency

CN113051722AActive Publication Date: 2021-06-29HARBIN ENG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-06-29

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Abstract

The invention discloses a method for improving safety performance analysis of a nuclear power plant by embedding a discrete dynamic event tree, which comprises the following steps of: S1, writing a RELAP5 software input file '*. I' file according to a confirm theory safety analysis method according to a safety problem needing to be analyzed of the nuclear power plant; s2, constructing a DETRIA-A module serving as a basic interface module; s3, constructing a DETRIA-B module serving as a data extraction module; s4, constructing a DETRIA-C module serving as a file management module; s5, a DETRIA-D module serving as a RELAP5 starting module is constructed; s6, constructing a DETRIA-E module which is used as a DET simulation module; and S7, constructing a DETRIA-F module as a post-processing module. The method has the advantage that the dynamic event tree method can be autonomously coupled with the RELAP5 program of the deterministic theory safety analysis program.
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Description

Technical field

[0001] The present invention relates to a nuclear power plant safety analysis, and in particular, to the method of improving the safety performance analysis of nuclear power plants using embedded discrete dynamic events. Background technique

[0002] The traditional nuclear power plant safety analysis method includes two types of security analysis methods and probability safety evaluation methods; the judicial analysis method generally uses Relap5 and other software; probability safety evaluation method is based on traditional event tree / fault tree method. Single determination theory and probability theory has limitations in analyzing the dynamic characteristics of nuclear power plants; therefore, in order to achieve the possible complex interactive models of hardware / software / process / human behavior during complex system evolution of nuclear power plants Modeling, thereby developing a dynamic event tree method.

[0003] At present, the discrete dynamic eve...

Examples

Embodiment

[0059] On the basis of the above programs, such as figure 2 As shown, the construction step 1 in the DET model method is as follows:

[0060] S1, based on the root node represents DET and Relap5 program dynamically coupled simulation, the initial state of the nuclear power plant is input file, and writes the Relap5 software input file "*." File in accordance with the deterministic security analysis method;

[0061] S2, build the DETRIA-A module as a basic interface module to implement the Relap5 program model input card file "*." File read, modification, copying and other functions;

[0062] S3, build the DETRIA-B module as a data extraction module to calculate the output file according to the RELAP5 program of different nodes, extract TRIPS data, small editing data, and restart card number data;

[0063] S4, build the DETRIA-C module as a file management module to realize replication file replication and deletion of the Relap5 reacting function;

[0064] S5, build the DETRIA-D mo...