When will the Fukushima nuclear water tank be full? When is nuclear sewage likely to be discharged into the sea?

Beijing, January 29 (Xinhua) according to Kyodo news agency, Tokyo Electric Power Company of Japan said on the 28th that the storage capacity of treated water in the plant area of Fukushima Daiichi nuclear power plant will reach the limit around the summer of 2022, which may be postponed to the autumn of the same year. Dongdian said the reason is that the nuclear sewage countermeasures have been promoted, and the precipitation last year was less.

According to the report, Mino Ono, the top person in charge of the propulsion Department of the scrapped Fukushima nuclear reactor of TEPCO, disclosed the news at a press conference. The specific full time is expected to be investigated in detail in the future.

Dongdian said that by reducing the amount of rainwater flowing into the plant and other measures, the average daily amount of nuclear sewage in 2020 will be about 140 tons, less than expected. The government and TEPCO’s reactor scrapping schedule set a target of about 150 tons by 2020.

It is said that in Fukushima I nuclear power plant, the nuclear sewage continued to increase due to the influence of water injection, inflow of groundwater and rain water aimed at cooling the melted nuclear fuel (fuel debris) left in the plants of units 1-3. Dongdian uses the “multi nuclide removal equipment” (ALPS) to purify the high activity radioactive substances contained in the nuclear sewage, and the treated water is kept in the storage tank. At present, there are 1.24 million tons.

The Japanese government has discussed discharging the treated water into the sea for disposal, but the finalization of the policy has been delayed. Dongdian said that it will take about two years for construction and other preparatory work to discharge into the sea.

On March 11, 2011, the “3.11” East Japan earthquake in Japan triggered a huge tsunami and Fukushima nuclear disaster, killing tens of thousands of people. As for how to treat the nuclear sewage accumulated in the Fukushima nuclear power plant, the Japanese government has previously said that it is safe to discharge the polluted water from the Fukushima nuclear accident into the sea, and stressed that the risk of impact on human health is “very small”.

However, a public opinion survey conducted by Asahi Shimbun from November to December 2020 on the discharge of Fukushima nuclear sewage shows that 55% of the respondents oppose the discharge of nuclear sewage into the sea.

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