noun
nuclear fuel debris
Technical term for melted and solidified fuel fragments from a nuclear reactor accident, especially in the context of the Fukushima Daiichi disaster.
See also: 燃料デブリ
福島第一原発では、核燃料デブリの取り出しが最大の課題だ。
At the Fukushima Daiichi Nuclear Power Plant, the removal of nuclear fuel debris is the biggest challenge.
Nuclear fuel debris emits extremely high radiation.