A Methodology for Analysis of Dependency between Operators in Digital Control System in a Nuclear Power Plant

The dependence between actions of the operators is more prevalent in the digital control system.Fuzzy logic-based approach is provided to evaluate the dependence of operators’ actions.Firstly,through the analysis of the characteristics of human factors in the digital control system,the factors influencing the dependence level of operators’ actions are identified,and the analytical model of dependence is constructed.Then,the methodology for analysis of dependency between actions of the operators is established based on the fuzzy logic approach.This method can not only simulate the vague and uncertain knowledge,but also give a clear explanation of the origin of the results and its reasoning process by tracing the reasoning steps.There-fore,there is traceability and repeatability in the proposed method.