(The) manipulation of time-varying dynamic variables using rule modification method and performance index in NPP accident diagnostics expert system

Abstract

The most significantly difficult problem when developing expert system for NPP accident diagnosis and treatment is the manipulation of time-varying dynamic variables. In order to manipulate the time-varying dynamic plant variables, this paper attempts to modify accident diagnosis rules when time is varying. In addition to rule modification method, this system also used transient analysis codes and accident analysis codes as a data-base. In order to simulate this expert system, PROLOG was used for its knowledge representation and its inherent backtracking inference strategy was used for inference engine.