Tokyo Electric Power Company announced on the 17th that it had completed the fourth and final release of this fiscal year, which began on the 28th of last month, regarding treated water that had accumulated at the Fukushima Daiichi Nuclear Power Plant.
TEPCO began diluting the 1.3 million tons of treated water containing radioactive substances such as tritium at the Fukushima Daiichi Nuclear Power Plant to below standards in August last year and releasing it into the ocean, and has released it three times by November. Ta.
The fourth and final release of this fiscal year began on the 28th of last month, and TEPCO announced that the release had been completed in the afternoon on the 17th.
The amount released this time was 7,794 tons, and the tritium concentration in the seawater collected by TEPCO from 10 locations within 3 km from the nuclear power plant during the release period was a maximum of 16 becquerels per liter, which is the standard for determining whether to stop the release. This is significantly lower than 700 Bq.
In the early hours of the 15th, while the fourth release was in progress, an earthquake occurred off the coast of Fukushima Prefecture with a maximum seismic intensity of just under 5. TEPCO temporarily halted the release based on prior plans. However, it was restarted approximately 15 hours later as no abnormalities were found in the equipment.
The total amount released this fiscal year was 31,145 tons, as originally planned.
TEPCO has proposed a plan to release approximately 54,600 tons in seven waves next fiscal year.