The Chernobyl Accident

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The Chernobyl-accident

Saturday the 26th April 1986, reactor number four exploded at the nuclear power plant near the town of Chernobyl in the former Soviet Union. It is widely considered to have been the worst nuclear power plant accident in history, and is one of only two classified as a level 7 event on the International Nuclear Event Scale - the other being the Fukushima Daiichi nuclear disaster in 2011.
The accident had disastrous consequences - Many people died because of radioactive contamination, and the Chernobyl accident cost the former Soviet Union hundreds of billions of dollars, and some observers believe it may have hastened the collapse of the Soviet government.

The reason why the disaster actually took place was because the engineer Nikolai Formin wanted to try an experiment. The nature behind this experiment was to check whether the turbines of the power plant could produce enough energy to keep the cool-down pumpers running until the emergency generator was automatically started (in order to continue the producing of energy). To successfully run this experiment they had to switch off the security system.
As a part of the experiment they decreased the reactors energy level so that it only was supposed to use about 25 % of its capacity.
For an unknown reason this didn’t happen. Instead the generator used under 10% of its capacity. They noticed they were losing control at this point, so they started all pumps again to get the cool-down flowing, but this procedure just turned all the water into steam because the temperature was in the generator was so high. After a few minutes there was no water at all, in other words there was no cool-down system. Without the cooling system the reactor exploded.

The damages of the Chernobyl disaster were severe and had a great impact on the environment.…...

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