Development of reactor anomaly diagnosis system

TL;DRAbstract

A reactor anomaly diagnosis system which is capable of detecting abnormal conditions of a reactor in early stage and thereby preventing them from developing into a fault or breakdown has been developed. The system consists of an input data process unit which collects from the data logger such reactor signals concerning reactor power, control rod position, coolant inlet and outlet temperatures, etc., a central process unit HITACHI computer 10 which detects the anomaly and determines the cause of the detected anomaly, and a color display unit which indicates the result of computation. In a field test conducted at the Japan Atomic Energy Research Institate, in which a material testing reactor (JMTR) was used, the system proved to have an anomaly detecting capability of 2 cent in terms of reactivity, and plus or minus 2 deg C in terms of coolant temperature change, and the time from signal collection to computation result indication was 1.5 sec. The abnormal conditions to be dealt with thi

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