In addition to hundreds of deaths caused by the earthquake and tsunami, the Japanese authorities are concerned about the damage to five reactors in Fukushima nuclear power plants 1 and 2, so they declared an emergency. Radiation to the central control unit 1 reactor nuclear plant in Fukushima 1 increased about a thousand times above normal after the powerful earthquake, so that improved security measures.
Furthermore, it detected radiation level eight times higher than normal at the main entrance of the plant. In the Fukushima plant 2 had abnormalities in three of the four nuclear reactors, according to the facility operator, Tokyo Electric Power. Japanese Prime Minister, Naoto Kan, ordered some 45 thousand people to evacuate the area within a radius of 10 km, due to a risk of radioactive leakage.
The failure occurred after the cooling automatically stopped following the earthquake of 8.9 magnitude on the Richter scale. The authorities gave permission to open the valves of reactor number one Fukushima 1 to release radioactive steam and relieve the internal pressure had risen to a very high level.
The Agency for Nuclear and Industrial Safety, quoted by NHK public television, acknowledged that there was a risk of a radioactive leak at the level of reactor No. 1, but without risk to the surrounding population. "Residents are encouraged to evacuation in stride," advised an official of the Agency.
In the reactors are temperature problems had been identified previously. "One of the central supports strong pressure from the earthquake and did not have enough coolant. The planes of the U.S. Air Force could supply, "said Secretary of State, Hillary Clinton. Fukushima plants 1 and 2 are located about 250 kilometers north of Tokyo.
Japan has more than 50 nuclear reactors, all located near the coast. 
Furthermore, it detected radiation level eight times higher than normal at the main entrance of the plant. In the Fukushima plant 2 had abnormalities in three of the four nuclear reactors, according to the facility operator, Tokyo Electric Power. Japanese Prime Minister, Naoto Kan, ordered some 45 thousand people to evacuate the area within a radius of 10 km, due to a risk of radioactive leakage.
The failure occurred after the cooling automatically stopped following the earthquake of 8.9 magnitude on the Richter scale. The authorities gave permission to open the valves of reactor number one Fukushima 1 to release radioactive steam and relieve the internal pressure had risen to a very high level.
The Agency for Nuclear and Industrial Safety, quoted by NHK public television, acknowledged that there was a risk of a radioactive leak at the level of reactor No. 1, but without risk to the surrounding population. "Residents are encouraged to evacuation in stride," advised an official of the Agency.
In the reactors are temperature problems had been identified previously. "One of the central supports strong pressure from the earthquake and did not have enough coolant. The planes of the U.S. Air Force could supply, "said Secretary of State, Hillary Clinton. Fukushima plants 1 and 2 are located about 250 kilometers north of Tokyo.
Japan has more than 50 nuclear reactors, all located near the coast.
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