Regarding treated water containing tritium at the Fukushima Daiichi Nuclear Power Station, which has been decided to be diluted below the standard and released into the sea, TEPCO is soliciting for practical application of tritium removal technology.

Tritium, a radioactive substance contained in the treated water of the Fukushima Daiichi Nuclear Power Plant, is difficult to remove from the water due to its nature, and a subcommittee of the Ministry of Economy, Trade and Industry, which is made up of experts who have been studying disposal methods, said that it is "practical level". The separation technology has not been confirmed at this time, "and the government finally decided in April to dilute the concentration of seawater below the standard and then release it into the sea.

However, there are deep-rooted concerns from the local community about the release to the ocean, and TEPCO has begun to solicit technology, saying that it is necessary to continue to consider whether there is a technology that can remove tritium and put it into practical use.

TEPCO is demanding that the concentration of tritium can be reduced to 1/1000 or less and that it can process 50 to 500 cubic meters per day as the separation technology that it aims at in the future.

The technology proposed by companies and research institutes in the open call for participants will be evaluated by a private company selected as a third-party institution, and if the possibility of practical application is confirmed, TEPCO will conduct a verification test, etc. It means going and aiming for practical use.