Practically all of this radioactive material would then go on to fall-out/precipitate onto much of the surface of the western USSR and Europe.
The Chernobyl accident dominates the energy accidents sub-category, of most disastrous nuclear power plant accident in history, both in terms of cost and casualties.
The Sievert takes into account the relative biological effectiveness (RBE) of ionizing radiation, since each form of such radiation—e.g., X-rays, gamma rays, neutrons—has a slightly different effect on living tissue.The Chernobyl disaster, also referred to as the Chernobyl accident, was a catastrophic nuclear accident.It occurred on 26 April 1986 in the No.4 light water graphite moderated reactor at the Chernobyl Nuclear Power Plant near Pripyat, in what was then part of the Ukrainian Soviet Socialist Republic of the Soviet Union (USSR). 21 Grigori Medvedev, The Truth About Chernobyl (Basic Books, 1991), Evelyn Rossiter, trans.; Piers Paul Read, Ablaze: The Story of the Heroes and Victims of Chernobyl (New York: Random House, 1993); and Zhores Medvedev, The Legacy of Chernobyl (New York: W. For a technical account of the reasons for the accident, see “INSAG-7: The Chernobyl Accident, Updating of INSAG-1,” Safety Series No. Valery Legasov, an academician and deputy director of the Kurchatov Institute in Moscow, who served on an early response team, later listened to tape recordings of the operators’ telephone conversations. Two years after the disaster, Legasov committed suicide. Some additional quotations from Chernyaev’s notes, not contained in the book, were provided by Svetlana Savranskaya. Also see the extensive work of the United Nations Chernobyl Forum Experts Group, including “Environmental Consequences of the Chernobyl Accident and Their Remediation: Twenty Years of Experience,” available at Center/Focus/Chernobyl/.