The manipulation of time-varying dynamic variables using the rule modification method and performance-index in NPP accident diagnostic expert systems

Author

Choi, Kie-Yong ; Yang, Joon-On ; Chang, Soon-Heung

Author_Institution

Dept. of Nuclear Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

Volume

35

Issue

5

fYear

1988

fDate

10/1/1988 12:00:00 AM

Firstpage

1121

Lastpage

1125

Abstract

When an expert system is being developed for nuclear power plant (NPP) accident diagnosis, the most difficult problem is the manipulation of the time-varying dynamic variables. To meet this need, the authors propose modification of the rules for accident diagnosis when plant parameters and conditions are varying. In addition to the rule-modification method, a pattern-matching method using the performance index is suggested. This system also uses the results of transient analysis and accident analysis codes as a database. To simulate this expert system, PROLOG was used to construct the knowledge base. The inherent backtracking inference strategy was used for the inference engine. Feedwater line piping failure was selected for system verification

Keywords

PROLOG listings; accidents; expert systems; fission reactor core control and monitoring; fission reactor safety; nuclear engineering computing; nuclear power stations; PROLOG; accident analysis; accident diagnosis; database; expert system; feedwater line piping failure; inference engine; inherent backtracking inference strategy; knowledge base; nuclear power plant; pattern-matching method; performance index; plant parameters; rule-modification method; time-varying dynamic variables; transient analysis; Accidents; Diagnostic expert systems; Engines; Expert systems; Humans; Manipulator dynamics; Pattern matching; Power generation; Power system reliability; Transient analysis;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.7508

Filename

7508