August 4th 2021 Japan’s Kansai Electric Power Company’s Daiichi nuclear power plant Unit 3 occurred a seawater leak. Kansai Power said there had been no radioactive material leak and that the surrounding environment had not been affected.
The unit had previously been suspended for a long time and did not resume operations until July 30 this year.
According to Japan’s “Daily News” reported on the 4th, the same day around 5 a.m., the Otsu nuclear power plant Unit 3 turbine room drainage tank water is higher than normal, and triggered an alarm.
Subsequently, the staff found a pipe to the rehydration of seawater leakage, so shut down one of the two pumps, nuclear power unit output power once reduced to about 65%. In order to cool the high temperature steam generated by the turbine unit, the nuclear power unit draws seawater from the sea and sends it to the rehydration unit.