A Method for Improving Safety Performance Analysis of Nuclear Power Plants Using Embedded Discrete Dynamic Event Trees

A technology of safety performance and safety analysis, applied in data processing applications, special data processing applications, instruments, etc., to improve analysis efficiency, reduce impact, and improve weak links

Active Publication Date: 2022-03-11
HARBIN ENG UNIV
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  • Abstract
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Problems solved by technology

[0005] In order to solve the above problems and overcome the shortcomings of the single deterministic safety analysis and probabilistic safety evaluation of traditional nuclear power plants, the present invention provides a method for improving the safety performance analysis of nuclear power plants by using embedded discrete dynamic event trees. The method uses DET and deterministic analysis The dynamic coupling of the software, in addition to obtaining the traditional deterministic analysis and calculation results, can also obtain the possibility of calculation and analysis results, that is, the probability of occurrence, and then provide risk-guided decision support information for the design, operation and management of nuclear power plants

Method used

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  • A Method for Improving Safety Performance Analysis of Nuclear Power Plants Using Embedded Discrete Dynamic Event Trees
  • A Method for Improving Safety Performance Analysis of Nuclear Power Plants Using Embedded Discrete Dynamic Event Trees
  • A Method for Improving Safety Performance Analysis of Nuclear Power Plants Using Embedded Discrete Dynamic Event Trees

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Embodiment

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

[0060] S1. The root node represents the initial state of the nuclear power plant during the dynamic coupling simulation of the DET and RELAP5 program as the input file, and writes the RELAP5 software input file "*.i" file according to the deterministic safety analysis method;

[0061] S2, build the DETRIA-A module as the basic interface module, to realize the functions such as reading, revising, copying of the RELAP5 program model input card file "*.i" file;

[0062] S3, build the DETRIA-B module as data extraction module, with the RELAP5 program calculation output file according to different nodes, extract information such as trips data, minor edit data and restart card number data;

[0063] S4, build the DETRIA-C module as file management module, to realize the restart file duplication and deletion of RELAP5 restart function;

[0064] S5, build the D...

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Abstract

The invention discloses a method for improving safety performance analysis of a nuclear power plant by using an embedded discrete dynamic event tree. File; S2, build DETRIA-A module as basic interface module; S3, build DETRIA-B module as data extraction module; S4, build DETRIA-C module as file management module; S5, build DETRIA-B as RELAP5 startup module -D module; S6, build the DETRIA-E module as the DET simulation module; S7, build the DETRIA-F module as the post-processing module. The invention has the advantage that the dynamic event tree method can be independently coupled with the deterministic security analysis program RELAP5.

Description

technical field [0001] The invention relates to the field of safety analysis of nuclear power plants, in particular to a method for improving safety performance analysis of nuclear power plants by using embedded discrete dynamic event trees. Background technique [0002] Traditional nuclear power plant safety analysis methods include deterministic safety analysis methods and probabilistic safety assessment methods; among them, deterministic safety analysis methods generally use RELAP5 and other software; probabilistic safety assessment methods are based on traditional event tree / fault tree methods. Single determinism and probability theory have limitations in analyzing the dynamic characteristics of nuclear power plant accidents; therefore, in order to explicitly model the possible complex interactions among hardware / software / processes / human behaviors during the evolution of complex systems in nuclear power plants Modeling, and then develop the dynamic event tree method. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q10/06
CPCG06F30/20G06Q10/0635
Inventor 王贺汪良军徐安琪刘铭李磊孙大彬陈思娟
Owner HARBIN ENG UNIV
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