13 years after meltdown, the head of Japan’s nuclear cleanup is probing mysteries inside reactors
1 year ago

13 years after meltdown, the head of Japan’s nuclear cleanup is probing mysteries inside reactors

Associated Press  

TOKYO — As Japan prepares to mark the 13th anniversary of its worst-ever nuclear disaster, the man in charge of cleaning it up says his team is fighting to bring a sample out of the heart of the site’s radioactive debris. The key to unlocking that mystery — and figuring out how to clean it up — is a sample of melted fuel from inside a reactor, said Akira Ono, head of decommissioning for Tokyo Electric Power Company Holdings, in an interview with The Associated Press. “We have achieved a number of things, but we still have a lot of thinking to do to tackle the unprecedented task of removing melted fuel.” A magnitude 9.0 earthquake and tsunami on March 11, 2011, damaged the Fukushima Daiichi plant’s cooling systems, causing three of its reactors to meltdown, releasing radiation and driving thousands of residents from their homes. About 880 tons of highly radioactive melted nuclear fuel remains inside the three damaged reactors, but no one knows what condition the melted fuel is in or exactly where in the reactors it fell. The team’s next attempt will come in October, using a previously tested device that resembles a fishing rod to get a preliminary sample out, while waiting technical improvements to the robotic arm, Ono said.

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