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Sofidif
Eurodif, which means ''European Gaseous Diffusion Uranium Enrichment Consortium'', is a subsidiary of the France, French company Orano, which operates a uranium enrichment plant established at the Tricastin Nuclear Power Center in Pierrelatte in Drôme. The nuclear site of Pierrelatte includes many nuclear installations, of which the largest are the Eurodif fuel factory and the Tricastin nuclear power station. Enriched uranium is the preferred fuel for light water reactors, a common nuclear power technology. History In 1973 France, Belgium, Italy, Spain and Sweden formed the joint stock company EURODIF. Sweden withdrew from the project in 1974. In 1975 Sweden's 10 per cent share in EURODIF was transferred to Iran as a result of an arrangement between France and Iran. The French government subsidiary company Cogema and the Iranian Government established the Sofidif () enterprise with 60 per cent and 40 per cent shares, respectively. In turn, Sofidif acquired a 25 per cent share ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurodif
Eurodif, which means ''European Gaseous Diffusion Uranium Enrichment Consortium'', is a subsidiary of the French company Orano, which operates a uranium enrichment plant established at the Tricastin Nuclear Power Center in Pierrelatte in Drôme. The nuclear site of Pierrelatte includes many nuclear installations, of which the largest are the Eurodif fuel factory and the Tricastin nuclear power station. Enriched uranium is the preferred fuel for light water reactors, a common nuclear power technology. History In 1973 France, Belgium, Italy, Spain and Sweden formed the joint stock company EURODIF. Sweden withdrew from the project in 1974. In 1975 Sweden's 10 per cent share in EURODIF was transferred to Iran as a result of an arrangement between France and Iran. The French government subsidiary company Cogema and the Iranian Government established the Sofidif () enterprise with 60 per cent and 40 per cent shares, respectively. In turn, Sofidif acquired a 25 per cent share i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Power
Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced by nuclear ''fission'' of uranium and plutonium in nuclear power plants. Nuclear ''decay'' processes are used in niche applications such as radioisotope thermoelectric generators in some space probes such as ''Voyager 2''. Generating electricity from fusion power, ''fusion'' power remains the focus of international research. Most nuclear power plants use thermal reactors with enriched uranium in a Nuclear fuel cycle#Once-through nuclear fuel cycle, once-through fuel cycle. Fuel is removed when the percentage of neutron poison, neutron absorbing atoms becomes so large that a nuclear chain reaction, chain reaction can no longer be sustained, typically three years. It is then cooled for several years in on-site spent fuel pools before being tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joint Stock Company
A joint-stock company is a business entity in which shares of the company's stock can be bought and sold by shareholders. Each shareholder owns company stock in proportion, evidenced by their shares (certificates of ownership). Shareholders are able to transfer their shares to others without any effects to the continued existence of the company. In modern-day corporate law, the existence of a joint-stock company is often synonymous with incorporation (possession of legal personality separate from shareholders) and limited liability (shareholders are liable for the company's debts only to the value of the money they have invested in the company). Therefore, joint-stock companies are commonly known as corporations or limited companies. Some jurisdictions still provide the possibility of registering joint-stock companies without limited liability. In the United Kingdom and in other countries that have adopted its model of company law, they are known as unlimited companies. In t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Power Companies Of France
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Nuclear may refer to: Physics Relating to the nucleus of the atom: * Nuclear engineering *Nuclear physics *Nuclear power *Nuclear reactor *Nuclear weapon *Nuclear medicine *Radiation therapy *Nuclear warfare Mathematics *Nuclear space *Nuclear operator *Nuclear congruence *Nuclear C*-algebra Biology Relating to the nucleus of the cell: * Nuclear DNA Society * Nuclear family, a family consisting of a pair of adults and their children Music * "Nuclear" (band), group music. * "Nuclear" (Ryan Adams song), 2002 *"Nuclear", a song by Mike Oldfield from his ''Man on the Rocks'' album * ''Nu.Clear'' (EP) by South Korean girl group CLC See also *Nucleus (other) *Nucleolus * Nucleation * Nucleic acid *Nucular ''Nucular'' is a common, proscribed pronunciation of the word "nuclear". It is a rough phonetic spelling of . The ''Oxford English Dictionary''s entry dates the word's first published appearance to 1943. Dictionary notes This is one of two con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decommissioning Nuclear Facilities
Nuclear decommissioning is the process whereby a nuclear facility is dismantled to the point that it no longer requires measures for radiation protection. The presence of radioactive material necessitates processes that are potentially occupationally hazardous, expensive, time-intensive, and present environmental risks that must be addressed to ensure radioactive materials are either transported elsewhere for storage or stored on-site in a safe manner.Benjamin K. Sovacool. "A Critical Evaluation of Nuclear Power and Renewable Electricity in Asia", ''Journal of Contemporary Asia'', Vol. 40, No. 3, August 2010, p. 373. The challenge in nuclear decommissioning is not just technical, but also economical and social. Decommissioning is an administrative and technical process. It includes clean-up of radioactive materials and progressive demolition of the facility. Once a facility is fully decommissioned, no radiological danger should persist. The costs of decommissioning are gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhône-Alpes
Rhône-Alpes () was an administrative region of France. Since 1 January 2016, it is part of the new region Auvergne-Rhône-Alpes. It is located on the eastern border of the country, towards the south. The region was named after the river Rhône and the Alps mountain range. Its capital, Lyon, is the second-largest metropolitan area in France after Paris. Rhône-Alpes has the sixth-largest economy of any European region. Geography Rhône-Alpes is located in the southeast of France. The neighboring (pre-2016) regions are Bourgogne (Burgundy) and Franche-Comté to the north, Auvergne to the west, Languedoc-Roussillon to the southwest, and Provence-Alpes-Côte d'Azur to the south. The eastern part of the region is in the Alps, and borders Switzerland and Italy. The highest peak is Mont Blanc, on the French-Italian border. The central part of the region comprises the river valleys of the Rhône and the Saône. The confluence of these two rivers is at Lyon. The western part of the regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Areva NC
Orano Cycle, formerly COGEMA (''Compagnie générale des matières nucléaires'') and Areva NC, is a French nuclear company. It is the main subsidiary of Orano S.A. It is an industrial group active in all stages of the uranium fuel cycle, including uranium mining, conversion, enrichment, spent fuel reprocessing, and recycling. The company was originally created in 1976. In 2001, it became part of Areva; its name was changed to ''Areva NC'' in March 2006. As a result of restructuring of Areva, Areva NC became part of Orano and changed its name to Orano Cycle. History In 1976, ''Compagnie générale des mines'' was created based on the uranium production activities of ''Commissariat à l'énergie atomique'' (CEA). Later it was renamed ''Compagnie Générale des Matières Nucléaire'' (COGEMA). As of 1999, COGEMA was majority owned by CEA (81.5%) with minority owned by Total S.A. (15%) and Technip (3.5%). It also owned stakes in Framatome and Eramet. In June 2001, Cogema becam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Hexafluoride
Uranium hexafluoride (), (sometimes called "hex") is an inorganic compound with the formula UF6. Uranium hexafluoride is a volatile white solid that reacts with water, releasing corrosive hydrofluoric acid. The compound reacts mildly with aluminium, forming a thin surface layer of AlF3 that resists any further reaction from the compound. UF6 is used in the process of enriching uranium, which produces fuel for nuclear reactors and nuclear weapons. Preparation Milled uranium ore—U3O8 or "yellowcake"—is dissolved in nitric acid, yielding a solution of uranyl nitrate UO2(NO3)2. Pure uranyl nitrate is obtained by solvent extraction, then treated with ammonia to produce ammonium diuranate ("ADU", (NH4)2U2O7). Reduction with hydrogen gives UO2, which is converted with hydrofluoric acid (HF) to uranium tetrafluoride, UF4. Oxidation with fluorine yields UF6. During nuclear reprocessing, uranium is reacted with chlorine trifluoride to give UF6: :U + 2 ClF3 → UF6 + Cl2 Prope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium 235
Uranium-235 (235U or U-235) is an isotope of uranium making up about 0.72% of natural uranium. Unlike the predominant isotope uranium-238, it is fissile, i.e., it can sustain a nuclear chain reaction. It is the only fissile isotope that exists in nature as a primordial nuclide. Uranium-235 has a half-life of 703.8 million years. It was discovered in 1935 by Arthur Jeffrey Dempster. Its fission cross section for slow thermal neutrons is about 584.3±1 barns. For fast neutrons it is on the order of 1 barn. Most but not all neutron absorptions result in fission; a minority result in neutron capture forming uranium-236. Natural decay chain :\begin \ce \begin \ce \\ \ce \end \ce \\ \ce \begin \ce \\ \ce \end \ce \end Fission properties The fission of one atom of uranium-235 releases () inside the reactor. That corresponds to 19.54 TJ/ mol, or 83.14 TJ/kg. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium
Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has the highest atomic weight of the primordially occurring elements. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. It occurs naturally in low concentrations of a few parts per million in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite. In nature, uranium is found as uranium-238 (99. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georges Besse
Georges Besse (25 December 1927 – 17 November 1986) was a French businessman who led several large state-controlled French companies. He was assassinated outside his Paris home by the terrorist group Action directe. At the time of his death he was the CEO of French car manufacturer Renault. Career timeline * 1958 - General manager of USSI Ingénierie (''L'usine de séparation isotopique'', uranium enrichment company). * 1964 - Becomes manager assistant general manager of CIT-Alcatel. * 1974 - Becomes president of Eurodif. * 1978 - Becomes chairman of COGEMA. * 1982 - Becomes director of Pechiney-Ugine-Kulmann. * 1985 - Becomes director of Renault. At Renault Besse became the head of the public-owned Renault automaker in January 1985. He was credited with taking the money-losing company to reporting a profit only two months before he was gunned down. He was criticized because his plan to make the bloated enterprise efficient included closing plants and laying off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
