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Ghana Research Reactor-1
The Ghana Research Reactor-1 (GHARR-1) is a nuclear research reactor located in Accra, Ghana and is the only nuclear reactor in the country. It is operated by the National Nuclear Research Institute, a sub-division of the Ghana Atomic Energy Commission. The reactor is a commercial version of the Chinese Miniature Neutron Source Reactor (MNSR) design. The reactor had its first criticality on December 17, 1994. Description GHARR-1 is a light water reactor with a maximum thermal power of 30 kW, a maximum thermal flux of 1012 s-1cm-2, and a maximum fast flux of 1.2·1012 s-1cm-2 . Beryllium is used as a reflector and the reactor is cooled by natural convection. Low enriched fuel is used, although the reactor was initially designed for 90.2% enriched uranium. The reactor core has 347 fuel rods. The reactor is mainly used as a research tool, including for neutron activation analysis and reactor physics experiments. Research has indicated that GHARR-1 could be used to produc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ghana Atomic Energy Commission
The Ghana Atomic Energy Commission'' (GAEC) is the state organization in Ghana involved with surveillance of the use of nuclear energy in Ghana. It is similar in aim to the Ghana Nuclear Society (GNS), with the difference being that the GNS is a nonprofit organisation, whereas the GAEC is part of the parliament of Ghana. Its primary objectives were set out by the parliament act 588, which involve investigating the use of nuclear energy for Ghana and supporting research and development both in Ghana and abroad.Ghana Atomic Energy Commission (GAEC), http://www.gaecgh.org/, 17 June 2012 Sub-Divisions * ''National Nuclear Research Institute (NNRI):'' * '' School of Nuclear and Allied Sciences (SNAS):'' Responsible for preservation, maintenance and enhancement of nuclear knowledge in Ghana and Africa through the provision of high-quality teaching, research, entrepreneurship training, service and development of postgraduate programmes in the nuclear sciences and technology. * ''Radi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enriched Uranium
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] |
Nuclear Research Reactors
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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] |
Nuclear Power In Ghana
There is one nuclear reactor in Ghana, the Ghana Research Reactor, located in Accra. In operation since 1994, it is used for research, medical, and industrial purposes, but not for generating electricity. Purpose The Ghana Atomic Energy Commission has been investigating the use of nuclear power and is a member of the International Nuclear Library Network. The commission is working with the International Atomic Energy Agency to implement nuclear power in Ghana as part of a wider project, Sustainable Energy Development for Sub-Saharan Africa. Ghana also has a Graduate School of Nuclear and Allied Sciences which trains undergraduate and postgraduate students in the techniques of nuclear science application in such areas as agriculture, medicine, and research.Clark, Nancy L. "Electrical Power". A Country Study: Ghana' (La Verle Berry, editor). Library of Congress Federal Research Division (November 1994). ''This article incorporates text from this source, which is in the public domai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miniature Neutron Source Reactor
The Chinese built Miniature Neutron Source reactor (MNSR) is a small and compact research reactor modeled on the Canadian HEU SLOWPOKE-2 design. The MNSR is tank-in-pool type, with highly enriched fuel (~ 90% U235 ). The tank is immersed in a large pool, and the core is, in turn, immersed in the tank. The maximum nominal power is ~ 30 kW, the power being removed by natural convection. The central core is formed of about 347 fuel rods, with 4 tie rods and 3 dummy elements distributed on a total of ten circles, each consisting of a number of fuel rods ranging between 6 and 62. A thick beryllium reflector (~ 10 cm) surrounds the core radially. China operates two MNSRs and has supplied Ghana, Iran, Pakistan, Nigeria and Syria with reactors of this type as well as the highly enriched uranium (HEU) to fuel them. Since 1978, various national and international activities have been underway to convert research and test reactors from the use of HEU to LEU fuel. References {{refli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Research Reactor
Research reactors are nuclear fission-based nuclear reactors that serve primarily as a neutron source. They are also called non-power reactors, in contrast to power reactors that are used for electricity production, heat generation, or maritime propulsion. Purpose The neutrons produced by a research reactor are used for neutron scattering, non-destructive testing, analysis and testing of materials, production of radioisotopes, research and public outreach and education. Research reactors that produce radioisotopes for medical or industrial use are sometimes called isotope reactors. Reactors that are optimised for beamline experiments nowadays compete with spallation sources. Technical aspects Research reactors are simpler than power reactors and operate at lower temperatures. They need far less fuel, and far less fission products build up as the fuel is used. On the other hand, their fuel requires more highly enriched uranium, typically up to 20% U-235, although some use 93 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Energy In Ghana
There is one nuclear reactor in Ghana, the Ghana Research Reactor, located in Accra. In operation since 1994, it is used for research, medical, and industrial purposes, but not for generating electricity. Purpose The Ghana Atomic Energy Commission has been investigating the use of nuclear power and is a member of the International Nuclear Library Network. The commission is working with the International Atomic Energy Agency to implement nuclear power in Ghana as part of a wider project, Sustainable Energy Development for Sub-Saharan Africa. Ghana also has a Graduate School of Nuclear and Allied Sciences which trains undergraduate and postgraduate students in the techniques of nuclear science application in such areas as agriculture, medicine, and research.Clark, Nancy L. "Electrical Power". A Country Study: Ghana' (La Verle Berry, editor). Library of Congress Federal Research Division (November 1994). ''This article incorporates text from this source, which is in the public do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Dioxide
Uranium dioxide or uranium(IV) oxide (), also known as urania or uranous oxide, is an oxide of uranium, and is a black, radioactive, crystalline powder that naturally occurs in the mineral uraninite. It is used in nuclear fuel rods in nuclear reactors. A mixture of uranium and plutonium dioxides is used as MOX fuel. Prior to 1960, it was used as yellow and black color in ceramic glazes and glass. Production Uranium dioxide is produced by reducing uranium trioxide with hydrogen. :UO3 + H2 → UO2 + H2O at 700 °C (973 K) This reaction plays an important part in the creation of nuclear fuel through nuclear reprocessing and uranium enrichment. Chemistry Structure The solid is isostructural with (has the same structure as) fluorite (calcium fluoride), where each U is surrounded by eight O nearest neighbors in a cubic arrangement. In addition, the dioxides of cerium, thorium, and the transuranic elements from neptunium through californium have the same structures. No ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladding (nuclear Fuel)
Cladding is an outer layer of material covering another. It may refer to the following: *Cladding (boiler), the layer of insulation and outer wrapping around a boiler shell *Cladding (construction), materials applied to the exterior of buildings **Wall cladding, exterior material applied to the walls of a building **Copper cladding, applying copper to the exterior of buildings **Rainscreen cladding, an exterior wall detail to create a capillary break and to allow drainage and evaporation of water *Cladding (fiber optics), fiber optics property to contain light in the core of the fiber by total internal reflection *Cladding (metalworking), a bonding together of dissimilar metals *Cladding (nuclear fuel) Cladding is an outer layer of material covering another. It may refer to the following: *Cladding (boiler), the layer of insulation and outer wrapping around a boiler shell *Cladding (construction), materials applied to the exterior of buildings ..., the outer layer of the fuel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Proliferation
Nuclear proliferation is the spread of nuclear weapons, fissionable material, and weapons-applicable nuclear technology and information to nations not recognized as " Nuclear Weapon States" by the Treaty on the Non-Proliferation of Nuclear Weapons, commonly known as the ''Non-Proliferation Treaty'' or ''NPT''. Proliferation has been opposed by many nations with and without nuclear weapons, as governments fear that more countries with nuclear weapons will increase the possibility of nuclear warfare (up to and including the so-called countervalue targeting of civilians with nuclear weapons), de-stabilize international or regional relations, or infringe upon the national sovereignty of nation states. Four countries besides the five recognized Nuclear Weapons States have acquired, or are presumed to have acquired, nuclear weapons: India, Pakistan, North Korea, and Israel. None of these four is a party to the NPT, although North Korea acceded to the NPT in 1985, then withdrew in 200 ... [...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] |
International Atomic Energy Agency (IAEA)
The International Atomic Energy Agency (IAEA) is an intergovernmental organization that seeks to promote the peaceful use of nuclear energy and to inhibit its use for any military purpose, including nuclear weapons. It was established in 1957 as an autonomous organization within the United Nations system; though governed by its own founding treaty, the organization reports to both the General Assembly and the Security Council of the United Nations, and is headquartered at the UN Office at Vienna, Austria. The IAEA was created in response to growing international concern toward nuclear weapons, especially 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" speech, which called for the creation of an international organization to monitor the global proliferation of nuclear resources and technology, is credited with catalyzing the formation of the IAEA, whose treaty came into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
