Before Chernobyl Disaster | Info

The Chernobyl disaster , also referred to as the Chernobyl accident , was a catastrophic nuclear accident . It occurred on 25–26 April 1986 in the No.4 light water graphite moderated reactor at the Chernobyl Nuclear Power Plant near Pripyat , a town in northern Ukrainian Soviet Socialist Republic which was part of the Soviet Union (USSR), approximately 104 km north of Kiev .