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,
Chernobyl Nuclear Power Plant was equipped with both types of turbines; Block 4 had the newer ones. The newer turbines, however, turned out to be more sensitive to their operating parameters, and their bearings had frequent problems with vibrations. Four RBMK reactors were at Chernobyl Nuclear Power Plant, Ns. 1–4. The construction of two partially completed reactors, numbers 5 and 6, was suspended immediately after the accident at reactor N. 4, and was eventually cancelled in 1989. Reactors 1-3 continued to operate after the disaster. Reactor N. 2 was permanently shut down in 1991 after a fire broke out due to a faulty switch