Chernobyl is not merely a technological castatrophe of the past. It infuences the present. "The numbers of excess cancers and cancer deaths worldwide will be in the tens of thousands" (Lisbeth Gronlund, Union of Concerned Scentists, 2011). The Chernobyl Nuclear Power Station was commissioned in 1977 by the Union of Soviet Socialist Republics (USSR). It was made by four reactors; the completion of the first reactor was in 1977, followed by reactor No. 2 (1978), No. 3 (1981), and No. 4 (1983). Chernobyl was the third nuclear power station in the Soviet Union. The disaster occurred on the evening of April 25, 1986 when a group of engineers began an electrical-engineering experiment on the Number 4 reactor. The engineers wanted to see if the reactor’s turbine could run emergency water pumps on inertial power.