How It Works

A nuclear experiment with explosive results

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The explosion at Chernobyl Nuclear Power Plant in what was then Soviet Russia is one of the world’s most infamous human-made disasters – and with good reason. It started innocently enough, with engineers performing a routine experiment to find out if the plant’s emergency water cooling would still work during a power outage.

The test had been carried out previously, but on this occasion there was a power surge and engineers couldn’t shut down Chernobyl’s nuclear reactors. Steam built up in one reactor, the roof was blown off, the nuclear core was exposed and radioactiv­e material was released into the atmosphere. Many workers and firefighte­rs were hospitalis­ed and 28 people passed away from acute radiation exposure. It took nearly two weeks and military interventi­on to extinguish the fires. Crucially, it took more than a day for the 50,000 residents of nearby Pripyat to be evacuated. Following this, the government establishe­d a 19-mile ‘exclusion zone‘ and built a containmen­t dome over the top of the site. In the years following the incident, studies estimate that thousands of people have developed cancer because of the radiation. It’s one of the most expensive disasters in history, too, and it’s estimated that containmen­t and clean-up efforts will continue until 2065.

“The explosion at Chernobyl is one of the most infamous human-made disasters”

 ?? ?? The vast explosion at Chernobyl pumped nuclear material into the atmosphere
The vast explosion at Chernobyl pumped nuclear material into the atmosphere
 ?? ?? Special measures were needed to clean up Seveso’s chemical leak
Special measures were needed to clean up Seveso’s chemical leak

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