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Abstract

A nuclear reactor monitoring device, a nuclear reactor control device, and a nuclear power generation plant, wherein a detector (103) for detecting the state quantity of a reactor core (68) in a nuclear reactor (12), an incore instrumentation and calculation unit (211) for generating reactor core performance data on the basis of the state quantity of the reactor core (68) detected by the detector (103), and a reactor core monitoring server main machine (231) for generating reactor core prediction data by predicting and computing the change with the passage of time of the reactor core (68) on the basis of a current reactor core operation condition and the reactor core performance data are provided, the reactor core monitoring server main machine (231) generates the reactor core prediction data when the reactor core performance data exceeds a preset prescribed range.

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First Claim