The European-Mediterranean Seismological Centre (EMSC)
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Given the reports of an uncontrolled nuclear fission reactor accident in Japan's Fukushima Munich radiation expert Professor Edmund Lengfelder warns of the possibility of a nuclear explosion ....
It would be "a kind of mini-nuclear bomb in the scale," said Lengfelder the dpa news agency. "The probability, however, I can not estimate at all." Nobody knows how much enriched uranium had flowed together in the manner in which the derelict nuclear power plant units.
This text have been partly translated with Google translate:
Lengfelder had after the meltdown at Chernobyl 25 years ago the Society for Radiological Protection and the Munich-based Otto Hug Radiation Institute. He cared for people with thyroid cancer today in the former Soviet disaster area.
Eight months after the meltdown in Fukushima the isotopes 133 and 135 of the gas xenon has been found, said Lengfelder. Since these isotopes are products of nuclear fission and only have a half life of about five days and nine hours, they could not come from the time of the accident in March. "There is a spontaneous fission - because of this anything can happen, even if one says, it is not likely. But what is to be kept of statements about probabilities, we have on 11 March saw. "At that time, had a severely damaged in this earthquake and unexpected strength of a tsunami and the nuclear power plant caused the meltdown.
In a functioning reactor control rods keep the chain reaction under control. "But in a meltdown this contol is no longer found," said Lengfelder.
As for the actual radiation exposure was given the total load since the accident, the recent nuclear fission is not of great importance. "But it does mean that (the operator) Tepco is even further away than previously claimed from getting things back under control." How long such a nuclear fission, was not foreseen. Depending on the amount and location of the fissile uranium, it could also last for years - and the quantity in Fukushima is very large, it go to tons.
In any case, the partial exclusion zone of 50 km is far too low. You must be at least 100 kilometers in the main northwest. In addition, the Japanese government has raised the limit for children to 20 millisieverts per year. "This is in Germany the maximum radiation dose for a nuclear power plant workers - but not for a child," criticized Lengfelder. It is expected that the cancer rate will rise sharply in the children, including birth defects in newborns are to be feared.
The treatment of the population was "inhumane," said Lengfelder. "For me, it is also inhumane, that in such a wealthy country like Japan, people still live in the gyms. . That there was not even on the Soviets, "The evacuation after Chernobyl have worked much better - and the limits are in Belarus today about three times more severe than in Germany.
Among the volunteers who have used the operator Tepco to clean up in Fukushima, it would be premature deaths in the coming years. "Chernobyl must proceed in analogy to one of them. But I'm skeptical that they will have more clarity on the Japanese as victims in the Soviet Union. "The Japanese government had lied to the people of Japan and the world about the extent of the disaster long. "Japan wants its technical aura not to bet on the game." Now we have the Japanese people decide whether they wanted to live with this risk the threat continues.
Lengfelder is for an immediate shutdown of all reactors. "When they are not properly insured, it means in the case of a super-Gaussian: The citizen is sitting on his injury. First we had Chernobyl, now we have Fukushima - what we need ?"...
For example, there are the words of the Lengfelder because of safety concerns from environmentalists vehemently criticized Czech Temelin nuclear power plant across the Bavarian border, serious problems with the welds. "If there happens a meltdown, and the wind blows from the east, the exclusion zone to reach Munich ."...
Lengfelder had after the meltdown at Chernobyl 25 years ago the Society for Radiological Protection and the Munich-based Otto Hug Radiation Institute. He cared for people with thyroid cancer today in the former Soviet disaster area.
Eight months after the meltdown in Fukushima the isotopes 133 and 135 of the gas xenon has been found, said Lengfelder. Since these isotopes are products of nuclear fission and only have a half life of about five days and nine hours, they could not come from the time of the accident in March. "There is a spontaneous fission - because of this anything can happen, even if one says, it is not likely. But what is to be kept of statements about probabilities, we have on 11 March saw. "At that time, had a severely damaged in this earthquake and unexpected strength of a tsunami and the nuclear power plant caused the meltdown.
In a functioning reactor control rods keep the chain reaction under control. "But in a meltdown this contol is no longer found," said Lengfelder.
As for the actual radiation exposure was given the total load since the accident, the recent nuclear fission is not of great importance. "But it does mean that (the operator) Tepco is even further away than previously claimed from getting things back under control." How long such a nuclear fission, was not foreseen. Depending on the amount and location of the fissile uranium, it could also last for years - and the quantity in Fukushima is very large, it go to tons.
In any case, the partial exclusion zone of 50 km is far too low. You must be at least 100 kilometers in the main northwest. In addition, the Japanese government has raised the limit for children to 20 millisieverts per year. "This is in Germany the maximum radiation dose for a nuclear power plant workers - but not for a child," criticized Lengfelder. It is expected that the cancer rate will rise sharply in the children, including birth defects in newborns are to be feared.
The treatment of the population was "inhumane," said Lengfelder. "For me, it is also inhumane, that in such a wealthy country like Japan, people still live in the gyms. . That there was not even on the Soviets, "The evacuation after Chernobyl have worked much better - and the limits are in Belarus today about three times more severe than in Germany.
Among the volunteers who have used the operator Tepco to clean up in Fukushima, it would be premature deaths in the coming years. "Chernobyl must proceed in analogy to one of them. But I'm skeptical that they will have more clarity on the Japanese as victims in the Soviet Union. "The Japanese government had lied to the people of Japan and the world about the extent of the disaster long. "Japan wants its technical aura not to bet on the game." Now we have the Japanese people decide whether they wanted to live with this risk the threat continues.
Lengfelder is for an immediate shutdown of all reactors. "When they are not properly insured, it means in the case of a super-Gaussian: The citizen is sitting on his injury. First we had Chernobyl, now we have Fukushima - what we need ?"...
For example, there are the words of the Lengfelder because of safety concerns from environmentalists vehemently criticized Czech Temelin nuclear power plant across the Bavarian border, serious problems with the welds. "If there happens a meltdown, and the wind blows from the east, the exclusion zone to reach Munich ."...
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