DIAGNOSIS OF NUCLEAR POWER STATION

Japanese Patent JPH01193697

A

PURPOSE:To enable a detection of a change in long term tendency of an equipment, by obtaining a static characteristic relation between an input and an output of each equipment for a diagnosis, a presumed output value from a measured input value and a deviation of the output values. CONSTITUTION:A date input part 1 converts each measured signal into a digital one and a signal processing part 2 obtains an average value, a standard deviation, the maximum and the minimum values of the input data during a predetermined time interval, and those occurrence time. A data storage part 3 stores the data and a generator part of a standard data 4 obtains an input/output relationship of each equipment for a diagnosis from the stored data, and stores the results. A comparison and decision part 5 substitutes the average values of input data stored at the data storage part 3 into input/output relation functions obtained by the generator part of a standard data 4, and presumes an average value of an output side and also obtains a deviation between the measured data and the average values of signals in the output side which are stored at the date storage part 3, and finally compares amounts of the deviations with a threshold values. In this way, a long term tendency and change to be occurred at an equipment can be detected from a change of an input/output relationship of the equipment.

ENOMOTO MITSUHIRO
FUKUMOTO RYUJI

JP1682888A

August 03, 1989

January 29, 1988

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NIPPON ATOMIC IND GROUP CO
TOSHIBA CORP
TOSHIBA ENGINEERING CO

G21C17/00; G21D3/00; (IPC1-7): G21C17/00; G21D3/00

Shoko Inomata (1 person outside)

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