Sources Contact Advanced Search Tutorials

An Interest In:

Web News this Week

Search Archive

Some of Our Sources

View All Sources

Help Webnuz

Referal links:

December 6, 2019 07:00 am

Fukushima Melted Fuel Removal Begins 2021, End State Unknown

Japan's economy and industry ministry said Monday that it will start removing melted fuel from the Fukushima Daiichi nuclear power plant in 2021. The milestone step of debris removal is considered the most difficult part of cleaning up the crisis-hit facility. ABC News reports: Nearly nine years after [the Fukushima nuclear power plant was wrecked by a massive earthquake and tsunami], the decommissioning of the plant, where three reactors melted, remains largely an uncertainty. The revised road map, to be formally approved later this month, lacks details on how the complex should look at the end but maintains a 30- to 40-year target to finish. By far the toughest challenge is to remove the 800 tons of nuclear fuel in the three reactors that melted, fell from the cores and hardened at the bottom of their primary containment vessels. In the past two years, plant operator Tokyo Electric Power Co. (TEPCO), has made progress in gathering details mainly from two of the three reactors. In February, a small telescopic robot sent inside Unit 2 showed that small pieces of debris can come off and be lifted out. The milestone step of debris removal is scheduled to begin at Unit 2 by the end of 2021. [...] TEPCO started removing the fuel rods from the Unit 3 pool in April 2019 and aims to get all 566 removed by March 2021. Removal of the rods from Units 1 and 2 is to begin in 2023. By 2031, TEPCO also plans to remove thousands at two other units that survived the tsunami to be stored in dry casks on the compound. More than 6,300 fuel rods were in six reactor cooling pools at the time of the accident, and only the Unit 4 pool has been emptied. "Japan has yet to develop a plan to dispose of the highly radioactive waste that will come out of the reactors," the report adds. "Under the road map, the government and TEPCO will compile a plan sometime after the first decade of debris removal ending in 2031." "Experts say a 30- to 40-year completion target for the decommissioning is too optimistic. Some have raised doubts if removing all of the melted fuel is doable and suggest an approach like Chernobyl -- contain the reactors and wait until radioactivity naturally decreases."

Slashdot

Slashdot was originally created in September of 1997 by Rob "CmdrTaco" Malda. Today it is owned by Geeknet, Inc..

More About this Source Visit Slashdot