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Tuesday, April 19, 2011
Robots entered Fukushima Nuclear Pant
As predicted here at Robotland on March 16 robots are now taking over the Fukushima Daiichi Plant.
Surprisingly first one month after the magnitude-9 earthquake and tsunami on March 11, Tokyo Electric Power Company (TEPCO) began using unmanned heavy equipment to remove radioactive rubble at the tsunami-hit Fukushima Daiichi nuclear plant. Hydrogen explosions blew off the ceilings and walls of the Number One and Number Three reactor buildings. The debris is emitting hundreds of millisieverts of radiation per hour in some places, hindering the restoration work. TEPCO started using remote-controlled power shovels and bulldozers to remove the rubble on Sunday April 10. Operators used cameras attached to the equipment as well as 6 fixed cameras at the site to carry out the work from hundreds of meters away.
On April 17 two robots of American company iRobot Corp. were sent into reactor buildings to check whether humans can reenter them found radiation levels as high as 49 millisieverts per hour inside the No. 1 unit, and up to 57 millisieverts in the No. 3 unit, according to the Nuclear and Industrial Safety Agency. The cumulative maximum level for nuclear workers was raised to 250 millisieverts from 100 millisieverts by Japan’s health ministry on March 15. Exposure totaling 100 millisieverts over a year is the lowest level at which any increase in cancer is evident, according to the World Nuclear Association in London. Check out the video below.