Regarding treated water containing radioactive substances such as tritium, which continues to increase at the Fukushima Daiichi Nuclear Power Station, TEPCO reviewed the time when the storage tank on the premises would be full from the initial fall to next summer to autumn. ..
At the Fukushima Daiichi Nuclear Power Plant, contaminated water generated by cooling the melted down nuclear fuel and flowing rainwater and groundwater into the underground of the reactor building is generated at a pace of about 130 tons a day.
Treated water containing tritium, which remains after removing most of the radioactive substances from this contaminated water, is stored in more than 1000 tanks installed on the premises of the nuclear power plant. It has reached about 1.29 million tons, which is a percentage.
Until now, TEPCO had set the time when the tank was full after autumn, but it has been revised from next summer to around autumn.
The rationale for this is that the ground on the premises was paved with asphalt, and measures such as repairing the roof of the building reduced the inflow of rainwater into the building, reducing the amount of contaminated water.
On the other hand, regarding the release of treated water to the ocean, TEPCO says that it will dilute it to a concentration below the standard according to the government policy, and there will be no change in the plan to release it to the sea around next spring.
Akira Ono, representative of TEPCO's Fukushima Daiichi Decommissioning Promotion Company, said, "We will continue to explain to the local people and related parties and prepare to release it in the spring of next year according to the government policy."