福島原発処理水、沖合１キロで放出　海底トンネル設置―東電・政府

　東京電力福島第１原発から出る放射性物質トリチウムを含んだ処理水の海洋放出をめぐり、東京電力ホールディングスと政府が、海底にトンネルを設置した上で１キロ程度沖合に流す方針を固めたことが２４日、関係者への取材で分かった。原発近くの沿岸から直接放出するよりも風評被害を抑えられると判断した。
　海底トンネルは岩盤の中を通す工事が必要なため、東電は９月以降に海底の地質を確認するボーリング調査などを行う見通し。同月中にも工事計画を原子力規制委員会に申請し、放出を始める２０２３年春ごろまでの完成を目指す。（2021/08/24-20:28）

The Japanese government and Tokyo Electric Power Company Holdings Inc. plan to release treated radioactive water from the stricken Fukushima No. 1 nuclear power plant about 1 kilometer off the coast, informed sources said Tuesday.
   The treated water, containing radioactive tritium, will be released through an undersea tunnel that will be set up, according to the sources.
   The government and TEPCO concluded that the use of such a tunnel would create less reputational damage than releasing the water directly from the coast near the plant, the sources said.
   TEPCO is expected to conduct a drilling survey for geological research in September or later as the undersea tunnel needs to penetrate bedrock.
   It will submit the construction plan to the Nuclear Regulation Authority by the end of September, aiming to build the tunnel by the planned start of the water release around spring 2023.