Another hour exposed at the gate of the Fukushima Nuclear Power Station will lose fertility
The Japanese government has initially set the nuclear accident to level 4.What does this level mean?
In accordance with the provisions of the "International Nuclear Event Holding Table" of the International Atomic Energy Agency, the nuclear security incidents are divided into level 7, of which level 1 to 3 as the incident; level 4 to 7 is an accident.
In the "incident", level 1 is abnormal; level 2 is an ordinary event, and there is no off -site impact, but the staff in the nuclear facilities suffer from excessive radiation; level 3 is a serious event, and the radioactive substances are very small. Due to the less radiation degree than the specified limit, the health of the staff of nuclear facilities is seriously affected.
In terms of "accident", if level 4 is reached, it means that the radioactive substance is released in small quantities, and the public will suffer the influence of radiation equivalent to the specified limit. At the same time, the nuclear reactor pile core and the radiation barrier will be significantly damaged. Radiation; Level 5 is an accident with off -site risks, and radioactive substances are limited. At this time, the nuclear reactor pile core and the radiation barrier are severely damaged; level 6 and 7 are major and extraordinary accidents, respectively.
Experts said that according to the current nuclear leakage, men will be exposed to the door of the Fukushima nuclear power plant one hour. Men will lose their fertility.
Historically, the Soviet Chel Nobel nuclear accident in 1986 was defined as the worst level 7.At that time, the nuclear power plant No. 4 exploded, causing 8 tons of radioactive substances to leak, directly polluting more than 60,000 square kilometers of land around the nuclear power plant, and more than 3.2 million people were radiated; the US Sanli Island nuclear accident in 1979 belonged to level 5.At that time, due to the failure of the refrigeration system of the nuclear power plant, at least 150,000 residents were forced to evacuate.
(Editor in charge: Chen Bong)
