TOKYO, March 21 (UPI) -- A rat or a similar animal may have shorted power supply to the systems to cool spent fuel pools at Japan's crippled nuclear power plant, its operator said.
The cooling systems for the spent fuel pools of the Nos. 1, 3 and 4 reactors at the Fukushima-Daiichi plant resumed operations Tuesday after being suspended for nearly two days due to a power failure.