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Tricastin Nuclear Power Plant
The Tricastin Nuclear Power Plant (french: link=no, Centrale Nucléaire du Tricastin) is a nuclear power plant consisting of 4 pressurized water reactors (PWRs) of CP1 type with 915 MW electrical power output each. The power plant is located in the south of France (Drôme and Vaucluse Department) at the Canal de Donzère-Mondragon near the Donzère-Mondragon Dam and the commune Pierrelatte. The power plant is part of the widespread Tricastin Nuclear Site (see below), which was named after the historic Tricastin region. Three out of the four reactors on the site had been used until 2012 to power the Eurodif Uranium enrichment plant, which had been located on the site. Tricastin Nuclear Site The Tricastin Nuclear Site (Site Nucléaire du Tricastin) is a collection of facilities run by Areva and EDF located on right bank of the Channel of Donzère-Mondragon (diversion canal of the Rhône River) south of the city of Valence (70 km upstream) and north of Avignon (65 km ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint-Paul-Trois-Châteaux
Saint-Paul-Trois-Châteaux (; oc, label=Vivaro-Alpine, Sant Pau de Tricastin), sometimes known as -en-Tricastin, is a commune, an administrative region, in the Drôme department in southeastern France. Name The settlement is attested as ''Augusta Tricastinorum'' (1st c. AD), ''Trikastinoi ōn polis Noiomagos'' (2nd c.), ''Sancti Pauli vel Sancti Restituti Trigastinensi'' (993), ''in Tricastrinensi'' (1132), ''civitate Tricastrina'' (1136), ''San Paul'' (ca. 1180), ''Sanctum Paulum Tricastinensem'' (1338), and ''Sainct Pol Trois Chasteaux'' (1545). The toponym derives from the name of the ancient Gallic tribe that dwelled in the region, the Tricastini. The insertion of an epenthetic ''r'' that changed ''Tricastini'' to ''Tricastrini'', which is attested by the 12th century, caused a semantic reinterpretation of the name, leading eventually to the modern French ''Trois-Châteaux'', meaning 'three-castles' (Latin ''Tria-Castra''). Population Sport It was the start of stage 16 of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valence, Drôme
Valence (, ; oc, Valença ) is a commune in southeastern France, the prefecture of the Drôme department and within the Auvergne-Rhône-Alpes region. It is situated on the left bank of the Rhône, about south of Lyon, along the railway line that runs from Paris to Marseille. It is the eighth-largest city in the region by its population and has 64,726 registered inhabitants in 2018 (132,556 inhabitants in the urban area (''unité urbaine''). The city is divided into four cantons. Its inhabitants are called ''Valentinois''. Located in the heart of the Rhone corridor, Valence is often referred to as "the door to the South of France", the local saying ''à Valence le Midi commence'' ("at Valence the Midi begins") pays tribute to the city's southern culture. Between Vercors and Provence, its geographical location attracts many tourists. Axes of transport and communications are the A7 and A49 autoroutes, the RN7, Paris/Marseille TGV line, as well as the Rhône. In addition, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autorité De Sûreté Nucléaire
The ''Autorité de sûreté nucléaire'' ( en, Nuclear Safety Authority, ASN) is an independent French administrative authority set up by law 2006-686 of 13 June 2006 concerning nuclear transparency and security. It has replaced the General Direction for Nuclear Safety and Radioprotection. Its task, on behalf of the State, is to regulate nuclear safety and radiation protection in order to protect workers, patients, the public and the environment from the risks involved in nuclear activities. It also contributes to informing the citizens. From 2006 to 2012, the president of the ASN was André-Claude Lacoste who was also a founding member and had been chairman of the International Nuclear Regulators' Association (INRA) and the Western European Nuclear Regulators' Association (WENRA). He was also the chairman of the Commission on Safety Standards (CSS) of the IAEA. Since November 2018, the president of the ASN is Bernard Doroszczuk. Early during the Fukushima Daiichi nuclear disas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Enrichment
Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (238U with 99.2739–99.2752% natural abundance), uranium-235 (235U, 0.7198–0.7202%), and uranium-234 (234U, 0.0050–0.0059%). 235U is the only nuclide existing in nature (in any appreciable amount) that is fissile with thermal neutrons. Enriched uranium is a critical component for both civil nuclear power generation and military nuclear weapons. The International Atomic Energy Agency attempts to monitor and control enriched uranium supplies and processes in its efforts to ensure nuclear power generation safety and curb nuclear weapons proliferation. There are about 2,000 tonnes of highly enriched uranium in the world, produced mostly for nuclear power, nuclear weapons, naval propulsion, and smaller quantities for research reactors. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marcoule Nuclear Site
Marcoule Nuclear Site (french: Site nucléaire de Marcoule) is a nuclear facility in the Chusclan and Codolet communes, near Bagnols-sur-Cèze in the Gard department of France, which is in the tourist, wine and agricultural Côtes-du-Rhône region. The plant is around 25 km north west of Avignon, on the banks of the Rhone. Operational since 1956, Marcoule is a gigantic site run by the atomic energy organization Commissariat à l'Énergie Atomique (CEA) and Areva NC and is known as CEA VALRHO Marcoule. The first industrial and military plutonium experiments took place in Marcoule. Diversification of the site was started in the 1970s with the creation of the Phénix prototype fast breeder reactor, which was operational until 2009, and is nowadays an important site for decommissioning nuclear facilities activities. the Phénix reactor was planned to be succeeded by the sodium-cooled fast reactor ASTRID (Advanced Sodium Technical Reactor for Industrial Demonstration), for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaseous Diffusion
Gaseous diffusion is a technology used to produce enriched uranium by forcing gaseous uranium hexafluoride (UF6) through semipermeable membranes. This produces a slight separation between the molecules containing uranium-235 (235U) and uranium-238 (238U). By use of a large cascade of many stages, high separations can be achieved. It was the first process to be developed that was capable of producing enriched uranium in industrially useful quantities, but is nowadays considered obsolete, having been superseded by the more-efficient gas centrifuge process. Gaseous diffusion was devised by Francis Simon and Nicholas Kurti at the Clarendon Laboratory in 1940, tasked by the MAUD Committee with finding a method for separating uranium-235 from uranium-238 in order to produce a bomb for the British Tube Alloys project. The prototype gaseous diffusion equipment itself was manufactured by Metropolitan-Vickers (MetroVick) at Trafford Park, Manchester, at a cost of £150,000 for four units, ... [...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] |
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] |
Nuclear Weapon
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter. The first test of a fission ("atomic") bomb released an amount of energy approximately equal to . The first thermonuclear ("hydrogen") bomb test released energy approximately equal to . Nuclear bombs have had yields between 10 tons TNT (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). A thermonuclear weapon weighing as little as can release energy equal to more than . A nuclear device no larger than a conventional bomb can devastate an entire city by blast, fire, and radiation. Since they are weapons of mass destruction, the proliferation of nuclear weapons is a focus of international relations policy. Nuclear weapons have been d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commissariat à L'énergie Atomique
The French Alternative Energies and Atomic Energy Commission or CEA ( French: Commissariat à l'énergie atomique et aux énergies alternatives), is a French public government-funded research organisation in the areas of energy, defense and security, information technologies and health technologies. The CEA maintains a cross-disciplinary culture of engineers and researchers, building on the synergies between fundamental and technological research. CEA is headed by a board headed by the general administrator (currently François Jacq since 20 April 2018), advised by the high-commissioner for atomic energy (currently Patrick Landais). Its yearly budget amounts to €5.1 billion and its permanent staff is slightly over 20,500 persons. It owned Areva. CEA was created in 1945; since then, the successive high-commissioners have been Frédéric Joliot-Curie, Francis Perrin, Jacques Yvon, Jean Teillac, Raoul Dautry, René Pellat, Bernard Bigot, Daniel Verwaerde and François Jacq. It c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COGEMA La Hague Site
The La Hague site is a nuclear fuel reprocessing plant at La Hague on the Cotentin Peninsula in northern France, with the Manche storage centre bordering on it. Operated by Orano, formerly AREVA, and prior to that COGEMA (''Compagnie générale des matières atomiques''), La Hague has nearly half of the world's light water reactor spent nuclear fuel reprocessing capacity. It has been in operation since 1976, and has a capacity of about 1,700 tonnes per year. It extracts plutonium which is then recycled into MOX fuel at the Marcoule site. It has treated spent nuclear fuel from France, Japan, Germany, Belgium, Switzerland, Italy, Spain and the Netherlands. It processed 1100 tonnes in 2005. The non-recyclable part of the radioactive waste is eventually sent back to the user nation. Prior to 2015, more than 32,000 tonnes of spent nuclear fuel has been reprocessed, with 70% of that from France, 17% from Germany and 9% from Japan. Operations Spent nuclear fuel roughly consists o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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