"There is no doubt that unlike in the past, the numbers already are at levels where human health may be affected," said chief Japanese government spokesman Yukio Edano.
Tens of thousands have been evacuated from an existing zone within a radius of 20 kilometers from the Fukushima No. generators. 1, 250 kilometers northeast of Tokyo. However, Prime Minister Naoto Kan urged people who live within 10 kilometers of the exclusion zone around the plant to stay indoors.
Tuesday morning, an explosion occurred at reactor number two in these plants. Edano later said there was also an explosion that sparked a fire at reactor number four. Although the number four reactor shut down for maintenance when the earthquake and tsunami struck on Friday, "Spent nuclear fuel in the reactor was heating up, creating hydrogen and trigger a hydrogen explosion."
He said the leak of radioactive material together with hydrogen. "Keep in mind that what was burning was not the nuclear fuel itself," said Edano. "We will do our best to extinguish or control the fire as soon as possible."
Similar hydrogen explosion has damaged reactor number one and number three on Saturday and Monday. The buildings for four of six reactors at the plant, which operated in 1971, has now been damaged by the explosion.
Edano said the radioactive material may have spread in the area about 20-30 kilometers. However, these substances will disappear when it spreads even further.
Japan is now struggling to cope with nuclear emergency conditions after a devastating earthquake and tsunami on Friday cut off the electricity to power the 40-year-old and thwart the cooling system. The officers have been struggling to prevent leakage of the damaged reactor. They said the fuel rods may have been damaged due to overheating.
Nuclear crisis has been created by the people in the surrounding area, who are still fighting the post-earthquake and tsunami, so unnerved. "There are very few people out on the streets," said Mako Sato, a maid cafe in town Miharumachi, just outside the evacuation zone. "They live at home or in evacuation centers due to conditions in the vicinity of nuclear power is uncertain. Supplies of food less and all the customers talk about earthquakes and how scary it is because we are still feeling the aftershocks."
An employee at the Chisun Hotel Koriyama said, there were no signs of panic despite the nuclear crisis. "Everyone is calm. But because there are security concerns after the earthquake, we do not accept new business," said the employee. "Food is very little. Convenience store nearest them closed. We do our best with the service we got."
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