After 25 years of the explosion of the Chernobyl nuclear power station, is made known that the catastrophe was caused by a failed test of the security system.
when performing the tests, the reactor produced a large increase in power and catastrophic explosions occurred 2, then the reactor core was destroyed, releasing highly radioactive cloud that swept Ukraine, Belarus, Russia and Western Europe.
Pripyat city with a population of 48,000 was evacuated one day after the explosion, the situation was controlled until mid-May and built a concrete layer to protect against future radioactive emissions.
Chernobyl was closed completely until December 2000 and has since built a large sarcophagus to protect and is expected to be completed in 2015 at a cost of one billion dollars.
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