Deaths due to the Chernobyl disaster 800 roentgens, twice the normal 50% probability of death dose. The following list is of those directly killed by the explosion and initial radioactivity release, or in the support efforts that followed. Deaths due to the Chernobyl disaster The Chernobyl disaster (, "Chornobylʹsʹka katastrofa", "Chernobyl accident") was considered as one of the worst nuclear disasters in history. It 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 scientific consensus on the effects of the disaster has been developed by the United Nations
Deaths due to the Chernobyl disaster by the accident are small compared to background rates of cancer. Theoretical estimates must rely instead on controversial models such as LNT or hormesis models. In the list following are 37 people whose deaths are officially directly attributable to the Chernobyl disaster. Of these, two died at the scene, four died in a single helicopter accident, 29 died within a few months of Acute Radiation Syndrome (ARS) and three died later from medical complications possibly caused by the accident. Of these people, one was a cinematographer, one a physician, five military personnel (four in a single helicopter), seven firefighters, two