Three tons of radioactive water leaked from an absorption unit within a treatment facility that purifies highly radioactive water at the crippled Fukushima No. 1 nuclear power plant, Tokyo Electric Power Co., the plant operator, said Oct. 18.
TEPCO said the water leakage was found in the radioactive cesium absorption unit manufactured by Kurion Inc. of the United States. The location and cause of the leak are under investigation.
The radioactive water had a cesium-137 concentration of 290,000 becquerels per cubic centimeter. The radioactive water that leaked has already been recovered and restored to the central waste treatment facility where it was originally located, the utility said.