On the afternoon of the 30th, at Unit 4 of the Kansai Electric Power Company's Takahama Nuclear Power Station in Fukui Prefecture, the nuclear reactor automatically shut down after a signal was issued indicating that the amount of neutrons in the reactor had suddenly decreased. I was.
Kansai Electric Power and the Nuclear Regulation Authority are investigating the cause, saying that the reactor has been shut down normally and that there is no problem with the cooling of the nuclear fuel so far.
According to the Nuclear Regulation Authority, around 3:20 pm on the 30th, the amount of neutrons, which indicates the state of nuclear fission in the reactor, decreased sharply at the operating Kansai Electric Power Company Takahama Nuclear Power Station Unit 4 in Takahama Town, Fukui Prefecture. It means that the reactor automatically shut down when a signal was issued to notify of an abnormality.
The reactor was shut down normally and there are no problems with cooling the nuclear fuel so far.
It means that there is no abnormality in the value of the monitoring post, which measures the radiation dose in the surrounding area.
The Nuclear Regulation Authority and Kansai Electric Power are investigating the cause.
Takahama Nuclear Power Plant Unit 4 started up in November last year and has been in commercial operation since December.
According to the Nuclear Regulation Authority, it was the first time since Unit 3 of the Kansai Electric Power Company's Takahama Nuclear Power Station in 1988 that the same signal automatically shut down a nuclear reactor.