Individual involvement in the Chernobyl disaster a table of victims and other involved people of the Number Four reactor accident (still alive unless date of death is specified or died from explosions or related causes). Individual involvement in the Chernobyl disaster The Chernobyl disaster, () "Chornobylʹsʹka katastrofa," was a nuclear accident that occurred on 26 April 1986 at the Chernobyl Nuclear Power Plant in the Ukrainian Soviet Socialist Republic (then part of the Soviet Union), now in Ukraine. The following is the individual involvement in the accident. Most of the information here is based on Grigoriy Medvedev's work. In the night from 25 to 26 April,
Balakovo Nuclear Power Plant which ameliorates radiation damage and extends service life by between 15 and 30 years. This had been demonstrated on unit 1. On 27 June 1985 during startup of the first reactor unit, a human error (later attributed to inexperience and haste) unexpectedly opened a pressurizer relief valve, and 300 °C steam entered the staff work area. Fourteen people were killed. This event is cited as one of the predecessors of the Chernobyl disaster. Balakovo Nuclear Power Plant Balakovo nuclear power station ( []) is located in the city of Balakovo, Saratov Oblast, Russia, about 900 kilometers south-east of Moscow. It