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Bruce Nuclear Generating Station
Bruce Nuclear Generating Station is a nuclear power station located on the eastern shore of Lake Huron in Ontario, Canada. It occupies 932 ha (2300 acres) of land. The facility derives its name from Bruce Township, the local municipality when the plant was constructed, now Kincardine due to amalgamation. With eight CANDU pressurized heavy-water reactors, it was the world's largest fully operational nuclear generating station by total reactor count and the number of currently operational reactors until 2016, when it was exceeded in nameplate capacity by South Korea's Kori Nuclear Power Plant. The station is the largest employer in Bruce County, with over 4000 workers. Formerly known as the Bruce Nuclear Power Development (BNPD), the facility was constructed in stages between 1970 and 1987 by the provincial Crown corporation, Ontario Hydro. In April 1999 Ontario Hydro was split into 5 component Crown corporations with Ontario Power Generation (OPG) taking over all electrical ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kincardine, Ontario
Kincardine ( ) is a municipality located on the shores of Lake Huron in Bruce County in the province of Ontario, Canada. The current municipality was created in 1999 by the amalgamation of the Town of Kincardine, the Township of Kincardine, and the Township of Bruce. The municipality had a population of 11,389 in the Canada 2016 Census. Communities In addition to the main population centre of Kincardine itself (population 6,725), the municipality also contains the smaller communities of Armow, Baie du Dore, Bervie, Glammis, Inverhuron, Millarton, North Bruce, Tiverton, and Underwood. History In 1998, the Village of Tiverton lost its separate incorporation, and became part of the Township of Bruce. The Town of Kincardine, the Township of Kincardine, and the Township of Bruce were then amalgamated to form the Township of Kincardine-Bruce-Tiverton on January 1, 1999, with boundaries identical to those of the municipality that had existed in 1855. After the first elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crown Corporation
A state-owned enterprise (SOE) is a government entity which is established or nationalised by the ''national government'' or ''provincial government'' by an executive order or an act of legislation in order to earn profit for the government, control monopoly of the private sector entities, provide products and services to citizens at a lower price and for the achievement of overall financial goals & developmental objectives in a particular country. The national government or provincial government has majority ownership over these ''state owned enterprises''. These ''state owned enterprises'' are also known as public sector undertakings in some countries. Defining characteristics of SOEs are their distinct legal form and possession of financial goals & developmental objectives (e.g., a state railway company may aim to make transportation more accessible and earn profit for the government), SOEs are government entities established to pursue financial objectives and devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kashiwazaki-Kariwa Nuclear Power Plant
The is a large, modern (housing the world's first advanced boiling water reactor or ABWR) nuclear power plant on a site.TEPCO Official Press Release (Japanese)First in Japan – Use of the Full Area for Power Plant Buildings, Reinforced Concrete R&D, and Waste Incinerator Building. July 25, 2002. The campus spans the towns of Kashiwazaki and Kariwa in Niigata Prefecture, Japan, on the coast of the Sea of Japan, where it gets cooling water. The plant is owned and operated by Tokyo Electric Power Company (TEPCO), and it is the largest nuclear generating station in the world by net electrical power rating. On July 16, 2007, the Chūetsu offshore earthquake took place, with its epicenter located only from the plant. The earthquake registered Mw 6.6, ranking it among the strongest earthquakes to occur in immediate range of a nuclear power plant. This shook the plant beyond design basis and initiated an extended shutdown for inspection, which indicated that greater earthquake-pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Reactor
A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction or nuclear fusion reactions. Nuclear reactors are used at nuclear power plants for electricity generation and in nuclear marine propulsion. Heat from nuclear fission is passed to a working fluid (water or gas), which in turn runs through steam turbines. These either drive a ship's propellers or turn electrical generators' shafts. Nuclear generated steam in principle can be used for industrial process heat or for district heating. Some reactors are used to produce isotopes for medical and industrial use, or for production of weapons-grade plutonium. , the International Atomic Energy Agency reports there are 422 nuclear power reactors and 223 nuclear research reactors in operation around the world. In the early era of nuclear reactors (1940s), a reactor was known as a nuclear pile or atomic pile (so-called because the graphite moderator blocks of the first reactor were placed into a tall pi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steam Drum
A steam drum is a standard feature of a water-tube boiler. It is a reservoir of water/steam at the top end of the water tubes. The drum stores the steam generated in the water tubes and acts as a phase- separator for the steam/water mixture. The difference in densities between hot and cold water helps in the accumulation of the "hotter"-water/and saturated-steam into the steam-drum. History Initially the boilers were designed with 4 drums and 3 drums like the Stirling boiler. The single drum at the bottom and three drums on the top were connected through a network of tubes which were welded to the drums above and the single drum below. The rational demand of steam in terms of capacity, pressure and temperature resulted in bi drums and single drum boilers. Working The separated steam is drawn out from the top section of the drum and distributed for process. Further heating of the saturated steam will make superheated steam normally used to drive a steam turbine. Saturated ste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loss-of-coolant Accident
A loss-of-coolant accident (LOCA) is a mode of failure for a nuclear reactor; if not managed effectively, the results of a LOCA could result in reactor core damage. Each nuclear plant's emergency core cooling system (ECCS) exists specifically to deal with a LOCA. Nuclear reactors generate heat internally; to remove this heat and convert it into useful electrical power, a coolant system is used. If this coolant flow is reduced, or lost altogether, the nuclear reactor's emergency shutdown system is designed to stop the fission chain reaction. However, due to radioactive decay, the nuclear fuel will continue to generate a significant amount of heat. The decay heat produced by a reactor shutdown from full power is initially equivalent to about 5 to 6% of the thermal rating of the reactor. If all of the independent cooling trains of the ECCS fail to operate as designed, this heat can increase the fuel temperature to the point of damaging the reactor. *If water is present, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Canadian Encyclopedia
''The Canadian Encyclopedia'' (TCE; french: L'Encyclopédie canadienne) is the national encyclopedia of Canada, published online by the Toronto-based historical organization Historica Canada, with the support of Canadian Heritage. Available for free online in both English and French, ''The Canadian Encyclopedia'' includes more than 19,500 articles in both languages on numerous subjects including history, popular culture, events, people, places, politics, arts, First Nations, sports and science. The website also provides access to the ''Encyclopedia of Music in Canada'', the ''Canadian Encyclopedia Junior Edition'', ''Maclean's'' magazine articles, and ''Timelines of Canadian History''. , over 700,000 volumes of the print version of ''TCE'' have been sold and over 6 million people visit ''TCE'''s website yearly. History Background While attempts had been made to compile encyclopedic material on aspects of Canada, ''Canada: An Encyclopaedia of the Country'' (1898–1900), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reactor Poisoning
The iodine pit, also called the iodine hole or xenon pit, is a temporary disabling of a nuclear reactor due to buildup of short- lived nuclear poisons in the reactor core. The main isotope responsible is 135Xe, mainly produced by natural decay of 135I. 135I is a weak neutron absorber, while 135Xe is the strongest known neutron absorber. When 135Xe builds up in the fuel rods of a reactor, it significantly lowers their reactivity, by absorbing a significant amount of the neutrons that provide the nuclear reaction. The presence of 135I and 135Xe in the reactor is one of the main reasons for its power fluctuations in reaction to change of control rod positions. The buildup of short-lived fission products acting as nuclear poisons is called reactor poisoning, or xenon poisoning. Buildup of stable or long-lived neutron poisons is called reactor slagging. Fission products decay and burnup One of the common fission products is 135Te, which undergoes beta decay with half-life of 19 ... [...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] |
Babcock & Wilcox
Babcock & Wilcox is an American renewable, environmental and thermal energy technologies and service provider that is active and has operations in many international markets across the globe with its headquarters in Akron, Ohio, USA. Historically, the company is best known for their steam boilers. Background The company was founded in 1867 in Providence, Rhode Island, by partners Stephen Wilcox and George Babcock to manufacture and market Wilcox's patented water-tube boiler. B&W's list of innovations and firsts include the world's first installed utility boiler (1881); manufacture of boilers to power New York City's first subway (1902); first pulverized coal power plant (1918); design and manufacture of components for , the world's first nuclear-powered submarine (1953–55); the first supercritical pressure coal-fired boiler (1957); design and supply of reactors for the first U.S. built nuclear-powered surface ship, (1961).''Steam/its generation and use'', 41st Edition The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Independent Electricity System Operator
The Independent Electricity System Operator (IESO) is the Crown corporation responsible for operating the electricity market and directing the operation of the bulk electrical system in the province of Ontario, Canada. It is one of seven independent system operators in North America. The IESO was established in April 1999 as the Independent Electricity Market Operator (IMO) under the government of Ontario during the premiership of Mike Harris in preparation for deregulation of the province's electrical supply and transmission system. As part of government plans to privatize the assets of Ontario Hydro, the utility was split into five separate Crown corporations with the IMO responsible for directing the flow of electricity across the high-voltage, province-wide network owned by Hydro One and other transmission companies. It was also given the responsibility of managing and operating the competitive wholesale electricity market and working with neighbouring jurisdictions to manage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pickering Nuclear Generating Station
Pickering Nuclear Generating Station is a Canadian nuclear power station located on the north shore of Lake Ontario in Pickering, Ontario. It is one of the oldest nuclear power stations in the world and Canada's third-largest, consisting of eight CANDU reactors. Since 2003, two of these units have been defueled and the remaining six produce about 16% of Ontario's power and employ 3,000 workers. Located at the Pickering station until October 2019 was a single 1.8 MWe wind turbine named the OPG 7 commemorative turbine. The turbine was dismantled in stages during October 2019 Reactor codification The reactors can be classified as follows: PICKERING A * PICKERING A 1 * PICKERING A 2 (Safe Shutdown state, defuelled) * PICKERING A 3 (Safe Shutdown state, defuelled) * PICKERING A 4 PICKERING B * PICKERING B 5 * PICKERING B 6 * PICKERING B 7 * PICKERING B 8 Construction The site was once Squires Beach located west of Duffins Creek. The facility was constructed in stages betwee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
