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Chernobyl Disaster Effects
The 1986 Chernobyl disaster triggered the release of radioactive contamination into the atmosphere in the form of both particulate and gaseous radioisotopes. , it was the world's largest known release of radioactivity into the environment. The work of the Scientific Committee on Problems of the Environment (SCOPE), suggests that the Chernobyl incident cannot be directly compared to atmospheric tests of nuclear weapons by simply saying that it's better or worse. This is partly because the isotopes released at Chernobyl tended to be longer-lived than those released by the detonation of atomic bombs. The economic damage caused by the disaster is estimated at $225 billion. Radiation effects on humans According to a 2009 United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) study, the Chernobyl accident had by 2005 caused 61,200 man- Sv of radiation exposure to recovery workers and evacuees, 125,000 man-Sv to the populace of Ukraine, Belarus, and Ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estimated Number Of Deaths From The Chernobyl Nuclear Disaster, OWID
Estimation (or estimating) is the process of finding an estimate or approximation, which is a value that is usable for some purpose even if input data may be incomplete, uncertain, or unstable. The value is nonetheless usable because it is derived from the best information available.C. Lon Enloe, Elizabeth Garnett, Jonathan Miles, ''Physical Science: What the Technology Professional Needs to Know'' (2000), p. 47. Typically, estimation involves "using the value of a statistic derived from a sample to estimate the value of a corresponding population parameter".Raymond A. Kent, "Estimation", ''Data Construction and Data Analysis for Survey Research'' (2001), p. 157. The sample provides information that can be projected, through various formal or informal processes, to determine a range most likely to describe the missing information. An estimate that turns out to be incorrect will be an overestimate if the estimate exceeds the actual result and an underestimate if the estimate fall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millisievert
The sievert (symbol: SvNot be confused with the sverdrup or the svedberg, two non-SI units that sometimes use the same symbol.) is a unit in the International System of Units (SI) intended to represent the stochastic health risk of ionizing radiation, which is defined as the probability of causing radiation-induced cancer and genetic damage. The sievert is important in dosimetry and radiation protection. It is named after Rolf Maximilian Sievert, a Swedish medical physicist renowned for work on radiation dose measurement and research into the biological effects of radiation. The sievert is used for radiation dose quantities such as equivalent dose and effective dose, which represent the risk of external radiation from sources outside the body, and committed dose, which represents the risk of internal irradiation due to inhaled or ingested radioactive substances. According to the International Commission on Radiological Protection (ICRP) one sievert results in a 5.5% probabilit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Becquerel
The becquerel (; symbol: Bq) is the unit of radioactivity in the International System of Units (SI). One becquerel is defined as the activity of a quantity of radioactive material in which one nucleus decays per second. For applications relating to human health this is a small quantity, and SI multiples of the unit are commonly used. The becquerel is named after Henri Becquerel, who shared a Nobel Prize in Physics with Pierre and Marie Skłodowska Curie in 1903 for their work in discovering radioactivity. Definition 1 Bq = 1 s−1 A special name was introduced for the reciprocal second (s−1) to represent radioactivity to avoid potentially dangerous mistakes with prefixes. For example, 1 µs−1 would mean 106 disintegrations per second: 1·(10−6 s)−1 = 106 s−1, whereas 1 µBq would mean 1 disintegration per 1 million seconds. Other names considered were hertz (Hz), a special name already in use for the reciprocal second, and Fourier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pripyat, Ukraine
Pripyat ( ; russian: При́пять), also known as Prypiat ( uk, При́пʼять, , ), is an abandoned city in northern Ukraine, located near the border with Belarus. Named after the nearby river, Pripyat, it was founded on 4 February 1970 as the ninth ''atomgrad'' (a type of closed town in the Soviet Union) to serve the nearby Chernobyl Nuclear Power Plant, which is located in the adjacent ghost city of Chernobyl. Pripyat was officially proclaimed a city in 1979 and had grown to a population of 49,360 by the time it was evacuated on the afternoon of 27 April 1986, one day after the Chernobyl disaster. Although it was located within the administrative district of Ivankiv Raion (now Vyshhorod Raion since the 2020 raion reform), the abandoned municipality now has the status of city of regional significance within the larger Kyiv Oblast, and is administered directly from the capital of Kyiv. Pripyat is also supervised by the State Emergency Service of Ukraine, which manage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fission Products
Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission. Typically, a large nucleus like that of uranium fissions by splitting into two smaller nuclei, along with a few neutrons, the release of heat energy (kinetic energy of the nuclei), and gamma rays. The two smaller nuclei are the ''fission products''. (See also Fission products (by element)). About 0.2% to 0.4% of fissions are ternary fissions, producing a third light nucleus such as helium-4 (90%) or tritium (7%). The fission products themselves are usually unstable and therefore radioactive. Due to being relatively neutron-rich for their atomic number, many of them quickly undergo beta decay. This releases additional energy in the form of beta particles, antineutrinos, and gamma rays. Thus, fission events normally result in beta and gamma radiation, even though this radiation is not produced directly by the fission event itself. The produced radionuclides have vary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiation
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes: * ''electromagnetic radiation'', such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation (γ) * ''particle radiation'', such as alpha radiation (α), beta radiation (β), proton radiation and neutron radiation (particles of non-zero rest energy) * '' acoustic radiation'', such as ultrasound, sound, and seismic waves (dependent on a physical transmission medium) * ''gravitational wave, gravitational radiation'', that takes the form of gravitational waves, or ripples in the curvature of spacetime Radiation is often categorized as either ''ionizing radiation, ionizing'' or ''non-ionizing radiation, non-ionizing'' depending on the energy of the radiated particles. Ionizing radiation carries more than 10 electron volt, eV, which is enough to ionize atoms and molecules and break ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryansk
Bryansk ( rus, Брянск, p=brʲansk) is a city and the administrative center of Bryansk Oblast, Russia, situated on the River Desna, southwest of Moscow. Population: Geography Urban layout The location of the settlement was originally associated with navigable river-routes and was located in the area of the Chashin Kurgan, where the fortress walls were erected. For reasons that have not yet been clarified, the city changed its location and by the middle of the 12th century had established itself on the steep slopes of the right bank of the Desna on Pokrovskaya Hill (russian: Покровская гора). The foundations of the future urban development of the city were laid even earlier, when around the city-fortress in the 17th century after the Time of Troubles of 1598-1613 on the coastal strip at the foot of the Bryansk fortress the posadskaya "Zatinnaya Sloboda" was upset, and on the upper plateau, between Verkhniy Sudok and White Kolodez - the "Streletskaya Sloboda". ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national republics; in practice, both its government and its economy were highly centralized until its final years. It was a one-party state governed by the Communist Party of the Soviet Union, with the city of Moscow serving as its capital as well as that of its largest and most populous republic: the Russian SFSR. Other major cities included Leningrad (Russian SFSR), Kiev (Ukrainian SSR), Minsk ( Byelorussian SSR), Tashkent (Uzbek SSR), Alma-Ata (Kazakh SSR), and Novosibirsk (Russian SFSR). It was the largest country in the world, covering over and spanning eleven time zones. The country's roots lay in the October Revolution of 1917, when the Bolsheviks, under the leadership of Vladimir Lenin, overthrew the Russian Provisional Government ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forsmark Nuclear Power Plant
Forsmark Nuclear Power Plant is a nuclear power plant in Forsmark, Sweden that provides 14% of Sweden's total electricity output, and also the site of the Swedish Final repository for radioactive operational waste. It is operated by a company mainly owned by Vattenfall. The radiation monitors at Forsmark were the first outside the Soviet Union to detect the elevated radiation levels resulting from the Chernobyl disaster in April 1986, over 1,000 km away, forcing the Soviet government to publicly acknowledge it after two days of them trying to cover it up. Reactors Forsmark NPP has three Boiling water reactors: * F1 with an ABB Atom BWR 69 at 2928 MW thermal and 1010 MWe net was first grid connection, connected to the grid on 5 June 1980, and commenced commercial operation on 10 December 1980. It has two turbo-alternators. * F2 with an ABB Atom BWR 69 at 3253 MW thermal and 1120 MWe net was first grid connected on 15 December 1980 and commenced commercial operation on 7 Jul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institut De Radioprotection Et De Sûreté Nucléaire
The French ''Institut de radioprotection et de sûreté nucléaire'' (IRSN) ("Radioprotection and Nuclear Safety Institute") located in Fontenay-aux-Roses is a public official establishment with an industrial and commercial aspect (EPIC) created by the AFSSE Act ( - French Agency of Sanitary Environmental Security) and by February 22, 2002 decreed n°2002-254. The IRSN is placed under the conjoint authority of the Defence minister, the Environmental minister, the Industry minister and the Health and Research minister. The IRSN gathers more than 1500 experts and researchers from the Institut de protection et de sûreté nucléaire (IPSN - Protection and Nuclear Safety Institute) and the Office de protection contre les rayonnements ionisants (OPRI - Ionizing radiations protection office). These scientists are thus competent on nuclear safety, radioactive protection and control of nuclear and sensitive materials. The IRSN realize investigations, expertise assessments and studies o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio France Internationale
Radio France Internationale, usually referred to as RFI, is the state-owned international radio broadcaster of France. With 37.2 million listeners in 2014, it is one of the most-listened-to international radio stations in the world, along with Deutsche Welle, the BBC World Service, the Voice of America, Radio Netherlands Worldwide, and China Radio International. RFI broadcasts 24 hours per day around the world in French and in 12 other languages in FM, shortwave, medium wave, satellite and on its website. It is a channel of the state company France Médias Monde. The majority of shortwave transmissions are in French and Hausa but also includes some hours of Swahili, Portuguese, Mandinka, and Russian. RFI broadcasts to over 150 countries on 5 continents. Africa is the largest part of radio listeners, representing 60% of the total audience in 2010. In the Paris region, RFI comprises between 150,000 and 200,000 listeners. In 2007, the audience was of 46.1 million listeners, bre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
