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A Step Toward Fuel Debris Removal: Robotic Arm Arrives at TEPCO’s Fukushima Daiichi Nuclear Power Plant

January 31, 2022

Akira Onoda: “The robot arm, which weighs 4.6 tons, is about 8 meters long when folded, but when a device is attached to the end, it can extend up to 22 meters. It can extend up to 22 meters.

On the morning of March 31, the robot arm was brought to Naraha Machi. The development of the arm in the UK was delayed for a year due to the new corona, but the final test will be conducted at the facility in Naraha Machi.

Akira Onoda: “The robotic arm will be placed in the upper part of the facility that mimics the interior of Unit 2 here, and will pass through a hole 55 centimeters in diameter to enter the pedestal where the debris is located.”

First, the telescopic arm is extended to enter the containment vessel. It is assumed that the tip of the arm, which is equipped with a device for extraction, will be used to access the bottom where the debris is located. The final test will be conducted over a period of six months from mid-February using a full-scale model.

Tomoki Kamigaki, chief engineer of MHI’s Decommissioning Project Office: “One important thing is that the device works exactly as we intend it to, so we think it is important to make sure that both the device and the operating system are working properly.

The only thing we know about the fuel debris is that even in Unit 2, the most advanced reactor in the study, it is possible to grab and lift some of it. The only thing we know about the fuel debris is that it can be grabbed and lifted, even in the Unit 2 reactor, which is the most advanced.

Akira Ono, President of TEPCO’s Fukushima Daiichi Nuclear Decommissioning Promotion Company: “I think we will start with a small amount of fuel debris, maybe one or two grains. I think we will be able to understand what the fuel debris is through analysis. I think this is the first step.

TEPCO plans to start removing fuel debris from the Unit 2 reactor by the end of 2022.

Fukushima TV–BD__wvYXpw

February 3, 2022 Posted by | Fuk 2022 | , , , | Leave a comment