KORIYAMA, Japan (AP) — The U.N. nuclear agency says Japan has declared a state of emergency at another earthquake-affected nuclear plant where higher-than-permitted levels of radioactivity were measured.
The International Atomic Energy Agency says Japan informed it that the source of the radioactivity at the Onagawa power plant is being investigated. It said all three reactors at the plant are under control.
Japan also said authorities at another plant have resorted to using sea water to cool a second reactor in an attempt to prevent a meltdown.
Japan said earlier attempts to cool the No. 3 reactor at the Fukushima Dai-ichi plant had failed. Sea water is also being used to cool the plant’s No. 1 reactor.
Sea water is corrosive and is being used as a last resort.
