According to reports two explosions at a nuclear power plant in Japan after the devastating earthquake of Friday experts consider that the risk of radiation of the public appears to be low; The research is more "as three mile Iceland as Chernobyl", said the Director of the Center for radiological research at Columbia University in New York, Dr. David Brenner, the New York Times.
The Japanese authorities, said that the first explosion Saturday the body concrete, around the reactor number 1 of the nuclear power plant by Tokyo electric power company in Fukushima Dai-Ichi, 150 miles (241 km) North of Tokyo.
Since then a second explosion of hydrogen is produced at the plant, but the Japanese authorities told the press the reactor container, which the Interior remains intact, Sky News reported.
Eleven people were injured, four members of the army and seven workers at the site after 3 units of nuclear power plant exploded Monday. The injured is in serious condition.
Secretary of the Cabinet Chief Yukio Edano, Japan, said containment vessel internal holding nuclear fuel is safe and the chances of a radioactive leak "weak."
He said people within a radius of 12 miles (20 km) to stay, the plant indoors.
Today, the seventh fleet of U.S. at about 100 miles (160 km) off the coast of the Japanese was placed, said after that it had moved its ships and airplanes more far, their instruments radiation detected at low altitude.
According to a report by the press of which should, the fleet said that the radiation dose on the normal position of one month to natural radiation in the environment.
It is believed that following the explosions has a collection of hydrogen through a chemical reaction between water and metal sheaths ignited around nuclear fuel rods. The normal cooling systems failed after an earthquake, and the authorities took emergency measures, including the pumping of water, to cool the reactors.
A nuclear expert UK, Robin Grimes, Director of the center of nuclear engineering at Imperial College in London, told of Reuters that it so badly fails, such as three mile Iceland:
"What is released at that time, which is essential, but not overwhelming, it is clear that the structure of the core is probably still intact because of the incident radiation."
In the meantime the Japanese authorities focus on a strategy three blocks, to stop the public from first contaminated: evacuation, housing and iodine pills.
These are the three weapons against civilian contamination, said Patrick Gourmelon, Director of the radiation monitoring of French nuclear power plant, the Institute for radiation protection and nuclear safety (IRSN), according to a report by agency AFP.
According to Sky News, the Japanese authorities warn people not step drink the tap water and iodine to prevent cancer of the throat.
The Chernobyl disaster occurred in April 1986, when only a nuclear reactor to explode, sending a radioactive cloud of dust on the parts of Ukraine and Belarus and its radioactive fuel evaporation.
This was followed by an epidemic of thyroid cancer and the increase of cases of leukaemia, Brenner said.
An estimate of the United Nations provides the number of dead at 4,000, but other non-government groups say that it was much higher.
Three mile Iceland accident was United States 1979 in Pennsylvania, when creating a partial merge core in a reactor pressure vessel for drinking water. Burner, said that the radiation, published by three mile Iceland about a millionth of a published one by Chernobyl.
There is no evidence that someone is sick as a result of three mile Iceland, said Brenner, "decades later."
Radiation interferes with DNA of a human cell, to share their ability and to jeopardize new healthy cells. Need to share to keep our cells to keep us alive and healthy, make new, so that the oldest to die and recycling. Especially in our intestines, where the turnover rate is high, make like in the cells of our bone marrow, blood cells.
Foetus and children are most vulnerable.
The severity of the medical symptoms of radiation depends on two things: the radiation force and duration of exposure.
High exposure to lead, that the disease of severe radiation with symptoms such as fatigue, nausea and vomiting, hair loss, bleeding and diarrhea.
Very high doses can lead to death, that can be performed no more than a few weeks later. Burner, said that it is usually because the lining of the intestines to the end.
Most likely danger to the public about what with Japan, according to the current view of the experts who strongly happens to the information that is shared by the Japanese authorities, however, is that of exposure at low altitude.
This can be the risk of cancer, some years later increase, but it depends on what types of people of radioactive material are exposed to, and for how long. Some materials, such as such as tritium, pass another travel quickly through the body, while a part of the body and live.
The most very dangerous substances such as uranium and other heavy metals would probably fall to the bottom of the vessel control and get released into the air, they would have to be restored later by the teams of the nuclear threat.
The danger to the public is radioactive chemicals, which are widely used in the air: smaller than a grain of sand, can a person through their lungs in the mouth and skin. And in a dose, they can cancer years later.
An example, iodine-131 and strontium-90.
Iodine is normally present in our food and went in the thyroid gland. Strontium is he not usually in our diet, but because it behaves chemically like calcium, went to bones and teeth.
The US Environmental Protection Agency has a half-life of eight days after a year, i.e. it is more radioactive iodine-131. Strontium-90 has a half life of 29 years, on the other hand which means basically, once in the body, it remains the most radioactive for the life of the person.
Brenner said with iodine, the tablets for inhalation of radioactive iodine, it protects the indirect way, through which he gets into the body, is necessary.
For example, in the case of Chernobyl, many of the cancers that years later took place to eat dairy products with radioactive iodine came, which had fallen to the ground and was swallowed up contaminated by the cows.
Brenner also noted that one other street contaminated cultures:
"I would eat an Apple from a tree in the vicinity of [nuclear] not," he told the New York Times.
Sky News announced Sunday, that some 200,000 people have been almost plant of Fukushima Dai-Ichi where has been explosions and also closely evacuated Fukushima Daini facility close.
Sources: New York Times, AP, Wall Street Journal, AFP, BBC, Sky News, US Environmental Protection Agency.