Regarding the trouble at the Fukushima Daiichi Nuclear Power Plant where water containing radioactive substances leaked from the contaminated water purification system, TEPCO has completed the recovery of the soil soaked with water by the 14th, and the risk of radioactive substances spreading has been confirmed. announced that it had been eliminated. The Nuclear Regulation Authority will hear from TEPCO about the cause and other details.
On the 7th of this month, approximately 5.5 tons of water containing radioactive materials far exceeding the reporting standards to the government leaked from a contaminated water purification system at the Fukushima Daiichi Nuclear Power Plant.
TEPCO recovered a total of 27 cubic meters of water-soaked soil, and the radiation level on the soil surface, which was 19 millisieverts per hour when recovery began, has fallen below the pre-work level of 0.02 millisieverts. That is to say.
In addition, by the morning of the 14th, work had been completed to harden the area where the leaked water had accumulated and the ground around it with resin, and TEPCO stated that ``the risk of radioactive materials spreading has been eliminated.'' is.
As for the cause, it appears that the worker may have forgotten to close a valve that is manually opened and closed, and at a meeting of the Nuclear Regulation Authority held on the 14th, a member said, ``What was supposed to be done was not being done.'' "That's true," was pointed out.
TEPCO is investigating the cause of the accident, and the Nuclear Regulation Authority will hear details at its meeting on the 19th next week.