A-UT Robot: 30 Years of Underwater Inspections in Nuclear Reactors
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- leaderobot.com
The A-UT robot, resembling a giraffe, has been operational in Japan's nuclear power plants for 30 years. Developed by Mitsubishi Heavy Industries, it performs critical inspections inside reactor pressure vessels using ultrasonic probes, where human access is impossible due to radiation.
This robot is essential for ensuring the integrity of reactor components that contain high-pressure, high-temperature water and nuclear fuel. Its ability to operate in hazardous conditions makes it an invaluable tool for maintaining safety in nuclear energy production, especially as Japan's nuclear sector begins to revive.
Looking ahead, the A-UT's role is expected to grow as more nuclear reactors restart operations, including the Kashiwazaki-Kariwa Unit 6 in February 2026. The continued use of such robots highlights their importance in energy strategy, ensuring the safety of welds in environments that are too dangerous for humans.
Original report
The 'Metal Giraffe' Robot: 30 Years of Service in Nuclear Reactors
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