© EPA
In order to stop contaminated groundwater from leaking at the Fukushima nuclear power station, the Japanese are planning to use artificial permafrost there. They're going to drill 30-metre-deep pipes with liquid nitrogen. The construction of the huge underground fridge will start soon and is scheduled to end next year.
The situation with the crippled Fukushima nuclear reactors still remains very serious. Three years have passed since the time when an earthquake and tsunami caused a disaster at the power plant, but a great deal of experts still describes the situation as a crisis which might transform into a catastrophe if continuous leaks of radioactive water are not stopped.
At the moment, the radiation level at the power station and in its neighborhood breaks all the records. In fact
it's so high that can kill a person over a period of a few hours.
The amount of radioactive substances in water samples collected on January 17 from a well, situated on the territory of the second unit of the Fukushima power plant, exceeded 24 million Bq per liter with the standard of 150 million Bq per liter. In order to put an end to the leaks at the wrecked power station, Japanese want to freeze earth around all four damaged reactor buildings.
The ice wall will run circa 1.5 kilometers. Vertical pipes with coolant will be drilled into the radioactive ground. This technology is rather costly and hasn't been used on such a large scale ever, Oleg Dvoynikov, the editor-in-chief of Pro atom magazine, told the Voice of Russia.
"As far as the cooling of earth is concerned, surely, it's possible to do it from a technical point of view. But they will need a nitrogen unit, practically, a plant working non-stop. It's bad the Japanese won't let any foreign experts visit the station. And there were offers of help, not only from Russia but from many other countries too," he says.
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