TEPCO launched a new Fukushima cleanup mission using to retrieve melted fuel debris, advancing Japan's long nuclear decommissioning effort.
Tokyo Electric Power Company Holdings has launched a new cleanup operation at the crippled Fukushima Daiichi nuclear power plant, using robotic systems to investigate and retrieve melted fuel debris from inside the damaged reactors.
The mission marks the latest step in Japan’s long-running decommissioning effort at the site. March 11 marks 15 years since the nuclear plant was hit by a tsunami, leading to its closure in 2011. For the cleanup process, TEPCO’s unveiled a a 22-meter robotic arm designed to access narrow spaces, inspect internal structures, and collect a third sample of radioactive debris last week.The effort comes as Japan continues to tackle one of the most complex nuclear cleanup operations in the world, with full-scale removal still expected to take years.A brief historyThe Fukushima plant was hit by an earthquake of 9.0 magnitude, triggering a tsunami that caused one of the worst nuclear disasters in human history.As a result, around 880 tons of hazardous material remain inside the power station. The material includes highly radioactive uranium rods, mixed with steel, rock, and concrete.In February, TEPCO revealed a snake-like robotic arm, measuring 3 feet and weighing about 4.6 tons, to start the cleanup of the debris. The robotic arm has helped extract some of the melted atomic fuel lodged at the bottom of the three damaged reactors.In 2024, engineers used a telescopic robot to remove a small piece of debris for the first time. The sample was soft and crumbly, easing fears that the melted fuel had turned into a rock-hard mass that even drills could not break.The robotic arm is expected to provide more precise data that will help the company move a step closer to the large-scale extraction program, which isn’t slated to begin until 2037. It will potentially incur hundreds of billions of dollars for the entire decommissioning process.A lack of claritySatoshi Yanagihara, a visiting professor at the Fukui Research Institute of Nuclear Engineering, revealed it’s still unknown where the waste from the Fukushima facility will be stored.Akira Ono, the chief decommissioning officer, revealed they have figured out how to execute the decommissioning process in a structured manner.“We’ve reached a point where we can carry out decommissioning work in a more planned and forward-looking manner,” he said.He warned and advised the company against “letting the guard down” and to continue investigations to ensure enough information is amassed to move forward.“If you’re told to reach your hand into pitch darkness without knowing what’s inside, you’d feel anxious, but if you have at least some idea of what’s there, then the feeling is quite different,” he said.Understanding the significanceThe project is highly important for Japan and its nuclear industry, which has faced a long struggle to regain public trust and restart reactors closed after the disaster.It also matters to the global nuclear sector, which is growing to provide reliable, carbon-free power for energy-hungry projects such as AI data centers, while also preparing for the safe retirement of aging plants.
Fukushima Disaster Fukushima Nuclear Accident Japan Nuclear Energy Nuclear Power
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