Development of a nuclear plant operator's thought model by the use of a training simulator

This paper reports on the method for developing an operator's thought model by the use of a training simulator that was investigated and the method which analyzes systematically the time series data of an operator's verbal protocol and behavior by putting them in order according to a fixed format has been proposed. The experiment by the use of the experimental fast breeder reactor JOYO training simulator was carried out and the experiment data was analyzed using the above method. An operator's thought model which is founded on hypothesis-based reasoning and very practical has been developed. Finally, how to apply it to the development of autonomous nuclear power plants was investigated