Abstract
This paper presents the experimental validation of a computerized operator support system (COSS) for BWR (Boiling Water Reactor) power plants. To assess the effects of the COSS on operator performance, a realistic experimental control room and a full scope BWR plant simulator were developed. The control room includes a main and two auxiliary control panels equipped with color cathode-ray tubes (CRT's), control switches, annunciators and paging devices. A supervisory console with CRT's is also installed in the control room. Test transients were selected by taking account of their severity, complexity, generality, duration time and relevance to the functions of the COSS. Experimental data of the operating crew's performance and the plant status during simulated transients were collected on-line by using computers and audio/video tape recorders. The data were processed and transformed into sunmarized forms to facilitate analysis. Questionnaires and interviews were performed to collect subjective data for analyzing and decision making process of the operators. The results of the experiment show the usefulness of the COSS as an operator aid, especially in diagnosing the causes of disturbances and in establishing counteractive strategies
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