EXPERIMENTAL-STUDY ON THE OPERATORS COGNI TIVE-BEHAVIOR ANALYSIS FOR THE PLANT ANOMALY DIAGNOSIS

In this paper, a method of human cognitive state estimation based on p hysiological measures has been applied to the analysis of cognitive be havior during anomaly diagnosis observed with nuclear power plant simu lator. This method has also been combined with the conventional experi mental protocol such as operational sequence and questionnaire results . The simulator experiments have been performed using plant experts an d the results demonstrate that the cognitive state estimation method c an be an effective way for understanding cognitive behavior during the anomaly diagnosis of the nuclear power plant. It has also been shown from the results that the combined use of the human cognitive state es timation and the conventional experimental protocol can provide effect ive information in decreasing the ambiguity of the analysis results.