Fuel debris is a mixture of melted fuel inside the reactor and reactor materials that has solidified. According to a previous internal examination of the reactor, an estimated 880 tons of fuel debris are present in the building. This debris needs to be retrieved to continue with decommissioning. For more information, please visit our website. https://www.meti.go.jp/english/earthq… Nuclear Accident Response Office, Electricity and Gas Industry Department, Agency for Natural Resources and Energy
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