Delay in Retrieving Nuclear Debris in Fukushima
Tokyo Electric Power Company (TEPCO) announced that starting of retrieving highly radioactive debris remaining at the bottom of crippled reactors in Fukushima Daiichi Nuclear Power Plant (FDNPP) will be delayed as late as FY2037. Although the company does not change the schedule of ending decommissioning process, which will be 2051, the change of schedule for retracting debris represents difficulty of decommissioning process in Fukushima with no precedent in the world. Losing water to cool reactors after being soaked in tsunami caused by East Japan Great Earthquake in 2011, nuclear fuel in three reactors in FDNPP melted down and remains untouched. The debris amounts to 880 metric ton. Thirteen years after the severe accident, TEPCO for the first time was able to take out a small amount of debris, less than teaspoonful amount, last November. TEPCO had a plan to start removing the debris by early 2030s. It assumes to crack debris down into small pieces and retrieve from the hole in...