A COMPUTATIONAL SITUATION ASSESSMENT MODEL FOR NUCLEAR-POWER-PLANT OPERATIONS

This paper presents a computational situation assessment (SA) model an d a model-based SA metric for nuclear power plant operations. The mode l and metric development starts,vith a definition of the plant operato r's SA centered decision making behavior. A computational SA model and a model-based SA metric are then developed to quantify and measure op erator SA. Using the SA model as a core, we further develop an integra ted operator/plant model that provides for explicit representation of the operator's fundamental functions of information processing, situat ion assessment, and decision making in a closed-loop plant/operator si mulation environment. We evaluate the model and metric in a model-base d simulation of a selected emergency scenario, and a model-based analy sis of a range of contemplated nuclear power plant automation/aiding o ptions.