The V.I. Lenin Memorial Chernobyl Nuclear Power Station was located in Ukraine, near the town of Pripyat, which had been built to house power station employees and their families. The power station was in a wooded, marshy area near the Ukraine-Belarus border, approximately 18 kilometers northwest of the city of Chernobyl and 100 km north of Kiev, the capital of Ukraine. The Chernobyl Nuclear Station included four nuclear reactors, and at the time of the accident, the four reactors produced about 10% of the electricity used in Ukraine.
On April 26, 1986, the operating crew planned to test Reactor No., during the test, power surged unexpectedly, causing an explosion and driving temperatures in the reactor to more than 2,000 degrees Celsius—and releasing a cloud of radiation into the atmosphere.
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