Development of JOYO operation support system Development of plamt state prediction function

not registered; not registered; Fukami, Akihiro*; not registered; Igawa, Kenichi*

In Experimental Fast Reactor "JOYO", "Development of operation Support System" is continued as the enhancement, of opration support by using computer, in order to improve the availability and reliability of "JOYO" and future fast reactors. Plant State Prediction is one of these systems, and its function is to predict important parameters with respect to the security of safety and to figure them as valid data on CRT. This report deals with the examinations to put this function into JOYDAS (JOYO Data Acqisition System). Main results are as follows. (1) Objective phenomena and signals were selected from Emergency Procedure-Operation (EPO) and so on. (2)From these signls, sodium level in R/V and decay heat were selected and these prediction models were produced. (3)AS for sodium level in R/V, its prediction model was compared with the data at Primary Main Pump Trip (1987-9-7) and this reasonability was confirmed.