Shape Shifting Robot To Inspect Damaged Fukushima Reactor
Japan’s Fukushima Daiichi nuclear plant, which suffered three reactor meltdowns from an earthquake and tsunami in March 2011, can’t be decommissioned until its ruined reactors are inspected. But because of deadly radiation, no human can get close to the facility to survey the damage.
So the Japanese electronics giant Hitachi and an affiliate, Hitachi-GE Nuclear Energy, have designed a snaky-looking, remotely controlled robot to do the job, perhaps as soon as April, to gather information about the state of the No. 1 reactor building to prepare for the removal of its radioactive rubble.
The utility that operates the power plant, Tokyo Electric Power Co. (TEPCO), intends to repair and seal off all damaged chambers in the facility, then fill them with water as a step toward eventually removing the melted remains. That is expected to take place in about 10 years.
Hitachi and Hitachi-GE demonstrated the shape-shifting robot on Feb. 5 at a plant owned by Hitachi-GE. It showed that the slinky, 2-foot-long robot can morph a bit depending on the space it needs to occupy and the work it needs to do.
In the demonstration, the robot, equipped with a camera and a lamp on its “nose,” snaked its way through a pipe with a diameter of only 4 inches. When it emerged from the other end of the pipe, it expanded to a U shape, then crawled around, taking live images of the immediate area and capturing temperature and radiation levels.
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