Tokyo Electric Power Co. on Dec. 19 released a photo showing about 230 tons of radioactive water that had accumulated in an underground tunnel at the Fukushima No. 1 nuclear power plant.
The tunnel, adjacent to the central waste treatment building, may have been flooded with water leaked from supposedly waterproof storage containers of highly radioactive water in the building.
The water in the tunnel was discovered on Dec. 18.
TEPCO said the tunnel is about 4.5 meters wide and about 54 meters in length. (Asahi)
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