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Pebble Bed Modular Reactor (Pty) Ltd
The Pebble Bed Modular Reactor (PBMR) is a particular design of pebble bed reactor developed by South African company PBMR (Pty) Ltd from 1994 until 2009. PBMR facilities include gas turbine and heat transfer labs at the Potchefstroom Campus of North-West University, and at Pelindaba, a high pressure and temperature helium test rig, as well as a prototype fuel fabrication plant. A planned test reactor at Koeberg Nuclear Power Station was not built. Reactor design The PBMR is characterised by inherent safety features, which mean that no human error or equipment failure can cause an accident that would harm the public. Heat from the PBMR can be used for a variety of industrial process applications, including process steam for cogeneration applications, in-situ oil sands recovery, ethanol applications, refinery and petrochemical applications. The high temperature heat can also be used to reform methane to produce syngas (where the syngas can be used as feedstock to produce hydro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centurion, Gauteng
Centurion (previously known as Verwoerdburg and before that Lyttelton) is an area with 236,580 inhabitants (2011 census) in the Gauteng Province of South Africa, between Pretoria and Midrand. Formerly an independent municipality, with its own town council, it has been part of the City of Tshwane Metropolitan Municipality since 2000. Its heart is at the intersection of the N1 and N14 freeways. The R21 freeway also passes through the eastern part of Centurion. The Waterkloof Air Force Base, as well as the Swartkop Air Force Base (which includes the South African Air Force Museum), are in Centurion. History Prehistoric Fossils discovered at the Sterkfontein Caves show that hominids lived in the vicinity of Centurion between 2 and 3 million years ago. The Sterkfontein Caves, a World Heritage Site, is less than 50 km from Centurion, near Mogale City and Krugersdorp. However, the earliest evidence of modern human habitation in the Centurion area does not go this far ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Atomic Energy Agency
The International Atomic Energy Agency (IAEA) is an intergovernmental organization that seeks to promote the peaceful use of nuclear technology, nuclear energy and to inhibit its use for any military purpose, including nuclear weapons. It was established in 1957 as an autonomous international organization; though governed by its own founding treaty, the IAEA Statute, the organization reports to both the United Nations General Assembly, General Assembly and the United Nations Security Council, Security Council of the United Nations, and is headquartered at the United Nations Office at Vienna, UN Office at Vienna, Austria. The IAEA was created in response to growing international concern toward nuclear weapons, especially Cold War (1953–1962), amid rising tensions between the foremost nuclear powers, the United States and the Soviet Union. U.S. president Dwight D. Eisenhower's "Atoms for Peace, Atoms for Peace" speech, which called for the creation of an international organiza ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pebble Bed Reactors
The pebble-bed reactor (PBR) is a design for a graphite-Neutron moderator, moderated, gas cooled reactor, gas-cooled nuclear reactor. It is a type of very-high-temperature reactor (VHTR), one of the six classes of nuclear reactors in the Generation IV reactor, Generation IV initiative. The basic design features spherical fuel elements called pebbles. These tennis ball-sized elements (approx. in diameter) are made of pyrolytic carbon, pyrolytic graphite (which acts as the moderator), and contain thousands of fuel particles called Nuclear_fuel#TRISO_fuel, tristructural-isotropic (TRISO) particles. These TRISO particles consist of a fissile material (such as Uranium-235, ) surrounded by a ceramic coating of silicon carbide for structural integrity and fission product containment. Thousands of pebbles are amassed to create a reactor core. The core is cooled by a gas that does not react chemically with the fuel elements, such as helium, nitrogen or carbon dioxide. Other coolants such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultra Safe Nuclear Corporation
Ultra may refer to: Science and technology * Ultra (cryptography), the codename for cryptographic intelligence obtained from signal traffic in World War II * Adobe Ultra, a vector-keying application * Sun Ultra series, a brand of computer workstations and servers * ULTRA (machine translation system), a machine translation system Music * Ultra (British band), an English pop band * Ultra Music Festival, an annual electronic festival in Miami, Florida * Ultra Worldwide, a series of annual electronic music festivals each called Ultra * Ultra, a collaboration between two members of hip hop group Ultramagnetic MCs, who released the album ''Big Time'' * Ultra (music), a post-punk movement in the Netherlands * Ultra house, a music place in Handen, Sweden * Ultra Records, a record label Albums and songs * ''Ultra'' (Depeche Mode album), 1997 * ''Ultra'' (Laura Põldvere album), 2009 * ''Ultra'' (Ultra album), 1999 * ''Ultra'' (Zomby album), 2016 * ''Ultra'', by Mickey Kojak, 2022 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exelon
Exelon Corporation is an American public utility headquartered in Chicago, and incorporated in Pennsylvania. Exelon is the largest electric parent company in the United States by revenue and is the largest regulated electric utility in the United States with approximately 10 million customers. The company is ranked 187th on the Fortune 500. Exelon owns six regulated utilities: Atlantic City Electric (New Jersey), Commonwealth Edison (Illinois), PECO Energy Company (Pennsylvania), Baltimore Gas and Electric (Maryland), Delmarva Power and Light (Delaware and Maryland), and Pepco (Washington, DC and Maryland). Operating subsidiaries * Atlantic City Electric is a regulated utility in New Jersey with 545,000 electric customers. * Baltimore Gas and Electric (BGE) is a regulated utility in Maryland with 1.25 million+ electric customers and 650,000+ natural gas customers. * Commonwealth Edison (ComEd) is a regulated utility in Illinois with 4 million electric customers. * Delmarva Pow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Westinghouse Electric Company
Westinghouse Electric Company LLC is an American nuclear power company formed in 1999 from the nuclear power division of the original Westinghouse Electric Corporation. It offers nuclear products and services to utilities internationally, including nuclear fuel, service and maintenance, instrumentation, control and design of nuclear power plants. Westinghouse's world headquarters are located in the Pittsburgh suburb of Cranberry Township, Pennsylvania. The company's main product is the AP1000, a modern pressurized water reactor (PWR) design with many passive safety features and modular construction intended to lower construction time and cost. Twelve AP1000 reactors are currently in operation with a further nineteen in various stages of planning. The company was initially formed as CBS Corporation spun off the remaining pieces of Westinghouse's industrial concerns, as part of Westinghouse's re-creation as a media company. Portions of their nuclear business were initially purc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eskom
Eskom Hld SOC Ltd or Eskom is a South African electricity public utility. Eskom was established in 1923 as the Electricity Supply Commission (ESCOM) (). Eskom represents South Africa in the Southern African Power Pool. The utility is the largest producer of electricity in Africa, and was among the top utilities in the world in terms of generation capacity and sales. It is the largest of South Africa's state owned enterprises. Eskom operates a number of notable power stations, including Matimba Power Station and Medupi Power Station in Lephalale, Kusile Power Station in Witbank, Kendal Power Station, and Koeberg Nuclear Power Station in the Western Cape Province, the only nuclear power plant in Africa. The company is divided into Generation, Transmission and Distribution divisions, and together Eskom generates approximately 95% of electricity used in South Africa, amounting to ~45% used in Africa, and emits 42% of South Africa's total greenhouse gas emissions. By releasi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Rand
The South African rand, or simply the rand, (currency sign, sign: R; ISO 4217, code: ZAR) is the official currency of South Africa. It is subdivided into 100 Cent (currency), cents (sign: "c"), and a comma separates the rand and cents. The South African rand is legal tender in the Common Monetary Area member states of Namibia, Lesotho, and Eswatini, with these three countries also having national currencies: (the Namibian dollar, dollar, the Lesotho loti, loti and the Swazi lilangeni, lilangeni respectively) pegged with the rand at parity and still widely accepted as substitutes. The rand was also legal tender in Botswana until 1976 when the Botswana pula, pula replaced the rand at par. The rand is legal tender in Zimbabwe as part of its multiple currency system, which also includes other currencies such as the euro, the pound sterling, the US dollar, and the Zimbabwean ZiG. Etymology The rand takes its name from the Witwatersrand ("white waters' ridge" in English, being t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Light Water Reactor
The light-water reactor (LWR) is a type of thermal-neutron reactor that uses normal water, as opposed to heavy water, as both its coolant and neutron moderator; furthermore a solid form of fissile elements is used as fuel. Thermal-neutron reactors are the most common type of nuclear reactor, and light-water reactors are the most common type of thermal-neutron reactor. There are three varieties of light-water reactors: the pressurized water reactor (PWR), the boiling water reactor (BWR), and (most designs of) the supercritical water reactor (SCWR). History Early concepts and experiments After the discoveries of fission, moderation and of the theoretical possibility of a nuclear chain reaction, early experimental results rapidly showed that natural uranium could only undergo a sustained chain reaction using graphite or heavy water as a moderator. While the world's first reactors ( CP-1, X10 etc.) were successfully reaching criticality, uranium enrichment began to devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Nuclear Program
As a member of the nuclear non-proliferation treaty, South Africa uses nuclear science for peaceful means. South Africa's nuclear programme includes both nuclear energy and nuclear medicine. In the past there was also a military component, and South Africa previously possessed nuclear weapons, which were subsequently dismantled. In the post-apartheid period, South Africa agreed to cooperate closely with the Russian state nuclear power company Rosatom on the development of new nuclear power plants in South Africa. One project was to cost US$76 billion, but has so far not been realized. Nuclear energy Koeberg The Koeberg nuclear power station is the only nuclear power station in South Africa and contains two uranium pressurized water reactors based on a design by Framatome of France. The station is located 30 km north of Cape Town. The plant is owned and operated by the country's national electricity supplier, Eskom. PBMR The Pebble bed modular reactor (PBMR) was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forschungszentrum Jülich
Forschungszentrum Jülich (FZJ; “Jülich Research Centre”) is a German national research institution that pursues interdisciplinary research in the fields of energy, information, and bioeconomy. It operates a broad range of research infrastructures like supercomputers, an atmospheric simulation chamber, electron microscopes, a particle accelerator, cleanrooms for nanotechnology, among other things. Current research priorities include the structural change in the Rhineland lignite-mining region, hydrogen, and quantum technologies. As a member of the Helmholtz Association with roughly 6,800 employees in ten institutes and 80 subinstitutes, Jülich is one of the largest research institutions in Europe. Forschungszentrum Jülich's headquarters are located between the cities of Aachen, Cologne, and Düsseldorf on the outskirts of the North Rhine-Westphalian town of Jülich. FZJ has 15 branch offices in Germany and abroad, including eight sites at European and international ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutron Reflector
A neutron reflector is any material that reflects neutrons. This refers to elastic scattering rather than to a specular reflection. The material may be graphite, beryllium, steel, tungsten carbide, gold, or other materials. A neutron reflector can make an otherwise subcritical mass of fissile material critical, or increase the amount of nuclear fission that a critical or supercritical mass will undergo. Such an effect was exhibited twice in accidents involving the Demon Core, a subcritical plutonium pit that went critical in two separate fatal incidents when the pit's surface was momentarily surrounded by too much neutron reflective material. Nuclear reactors In a uranium graphite chain reacting pile, the critical size may be considerably reduced by surrounding the pile with a layer of graphite, since such an envelope reflects many neutrons back into the pile. To obtain a 30-year life span, the SSTAR nuclear reactor design calls for a moveable neutron reflector to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
