The Chernobyl nuclear accident occurred in the city of Chernobyl. At the time of the accident, Chernobyl was a city in the Soviet Union. Today it is located in Ukraine, north of Kiev.
It was the night of 25th -26th, April 1986 when the Chernobyl accident occurred. The reactor of Unit 4 of the Chernobyl Nuclear Power Plant was being prepared for shutdown. This was a routine procedure, enabling maintenance and repairs to be carried while a series of tests on the unit's turbines were performed. …