Deaths due to the Chernobyl disaster 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 Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). In peer-reviewed publications UNSCEAR has identified 49 immediate deaths from trauma, acute radiation poisoning, a helicopter crash, and from an original group of
Effects of the Chernobyl disaster in 1988 to be "600,000 man Sv, equivalent on average to 21 additional days of world exposure to natural background radiation." The inhalation dose (internal dose) for the public during the time of the accident and their evacuation from the area in what is now the 30 km evacuation zone around the plant has been estimated (based on ground deposition of caesium-137) to be between 3 and 150 mSv. Thyroid doses for adults around the Chernobyl area were estimated to be between 20 and 1000 mSv, while for one-year-old infants, these estimates were higher, at 20 to 6000 mSv. For