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Japan Nuclear Fukushima
This photo shows the Fukushima Daiichi nuclear power plant in Okuma, Fukushima prefecture, northern Japan, on Aug. 22, 2024. (Kyodo News via AP)

A robot begins removal of melted fuel from the Fukushima nuclear plant. It could take a century

A small robot entered a damaged reactor at Japan’s Fukushima nuclear power plant on Tuesday, beginning a two-week, high-stakes mission to retrieve for the first time a tiny amount of melted fuel debris from the bottom

By MARI YAMAGUCHI
Published - Sep 10, 2024, 12:15 AM ET
Last Updated - Dec 16, 2024, 07:25 PM EST

TOKYO (AP) — A long robot entered a damaged reactor at Japan's Fukushima nuclear power plant on Tuesday, beginning a two-week, high-stakes mission to retrieve for the first time a tiny amount of melted fuel debris from the bottom.

The robot's trip into the Unit 2 reactor is a crucial initial step for what comes next — a daunting, decades-long process to decommission the plant and deal with large amounts of highly radioactive melted fuel inside three reactors that were damaged by a massive earthquake and tsunami in 2011. Specialists hope the robot will help them learn more about the status of the cores and the fuel debris.

Here is an explanation of how the robot works, its mission, significance and what lies ahead as the most challenging phase of the reactor cleanup begins.

What is the fuel debris?
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