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BWRX-300
The BWRX-300 is a design for a small modular nuclear reactor proposed by GE Hitachi Nuclear Energy (GEH). The BWRX-300 would feature passive safety, in that neither external power nor operator action would be required to maintain a safe state, even in extreme circumstances. Technology The BWRX-300 is an evolution of an earlier GE Hitachi reactor design, the Economic Simplified Boiling Water Reactor, but individually smaller. Boiling water reactors are tried and tested nuclear technology that use ordinary light water as a nuclear reactor coolant. Like most boiling water reactors, the BWRX-300 will use low pressure water to remove heat from the core. A distinct feature of this reactor design is that water is circulated within the core by natural circulation. This is in contrast to most nuclear reactors which require electrical pumps to provide active cooling of the fuel. This system has advantages in terms of both simplicity and economics. Decay heat removal Immediately after a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Small Modular Reactor
Small modular reactors (SMRs) are a proposed class of nuclear fission reactors, smaller than conventional nuclear reactors, which can be built in one location (such as a factory), then shipped, commissioned, and operated at a separate site. The term SMR refers to the size, capacity and modular construction only, not to the reactor type and the nuclear process which is applied. Designs range from scaled down versions of existing designs to generation IV designs. Both thermal-neutron reactors and fast-neutron reactors have been proposed, along with molten salt and gas cooled reactor models. SMRs are typically anticipated to have an electrical power output of less than 300 MWe (electric) or less than 1000 MWth (thermal). Many SMR proposals rely on a manufacturing-centric model, requiring many deployments to secure economies of unit production large enough to achieve economic viability. Some SMR designs, typically those using Generation IV technologies, aim to secure additional ec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GE Hitachi Nuclear Energy
GE Hitachi Nuclear Energy (GEH) is a provider of advanced reactors and nuclear services. It is headquartered in Wilmington, North Carolina, United States. Established in June 2007, GEH is a nuclear alliance created by General Electric and Hitachi. In Japan, the alliance is Hitachi-GE Nuclear Energy. In November 2015, Jay Wileman was appointed CEO. History In 1955, the Atomic Power Equipment Department was established by GE. Two years later, in 1957: GE's first privately financed nuclear power reactor provides electricity for commercial use in Vallecitos, California. Additionally, in 1960, GE made and contributed to the Dresden Nuclear Power Station in Chicago. In the 1960s, it got involved in constructing and building the Boiling water reactor (BWR). The research into the project continued in the next 50 years resulting in production of 6 different BWR generations. In 1997, the GE-Hitachi U.S. Advanced boiling water reactor (ABWR) design was certified as a final design in fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Darlington Nuclear Generating Station
Darlington Nuclear Generating Station is a Canadian nuclear power station located on the north shore of Lake Ontario in Clarington, Ontario. It is a large nuclear facility comprising four CANDU nuclear reactors with a total output of 3,512 MWe (capacity net) when all units are online. It is Canada's second-largest nuclear power plant and provides about 20 percent of Ontario's electricity needs, enough to serve a city of two million people. It is named for the Township of Darlington (now part of Clarington), the name of the municipality in which it is located at the time of its planning. Construction and operation The facility was constructed in stages between 1981 and 1993 by the provincial Crown corporation, Ontario Hydro. Unit 2 was brought online in 1990, Unit 1 in 1992, and Units 3 and 4 in 1993. In April 1999 Ontario Hydro was split into 5 component Crown corporations with Ontario Power Generation (OPG) taking over all electrical generating stations. The Darli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GE BWR
General Electric's BWR product line of boiling water reactors represents the designs of a relatively large (~18%) percentage of the commercial fission reactors around the world. The progenitor of the BWR line was the 5 MW Vallecitos Boiling Water Reactor (VBWR), brought online in October 1957. Six design iterations, BWR-1 through BWR-6, were introduced between 1955 and 1972. This was followed by the Advanced Boiling Water Reactor (ABWR) introduced in the 1990s and the Economic Simplified Boiling Water Reactor (ESBWR) introduced in the early 2010s. As of August 2018, 83 reactors of this design family have been built, of which 67 reactors are operational. The design garnered world attention in the aftermath of the INES level 7 Fukushima Daiichi nuclear disaster of 11 March 2011. GE had been a major contractor to the Fukushima Daiichi Nuclear Power Plant in Japan, which consisted of six boiling water reactors of GE design. The reactors for Units 1, 2, and 6 were supplied by Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Numerals
Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages. Numbers are written with combinations of letters from the Latin alphabet, each letter with a fixed integer value, modern style uses only these seven: The use of Roman numerals continued long after the decline of the Roman Empire. From the 14th century on, Roman numerals began to be replaced by Arabic numerals; however, this process was gradual, and the use of Roman numerals persists in some applications to this day. One place they are often seen is on clock faces. For instance, on the clock of Big Ben (designed in 1852), the hours from 1 to 12 are written as: The notations and can be read as "one less than five" (4) and "one less than ten" (9), although there is a tradition favouring representation of "4" as "" on Roman numeral clocks. Other common uses include year numbers on monuments and buildings and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estonia
Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, and to the east by Lake Peipus and Russia. The territory of Estonia consists of the mainland, the larger islands of Saaremaa and Hiiumaa, and over 2,200 other islands and islets on the eastern coast of the Baltic Sea, covering a total area of . The capital city Tallinn and Tartu are the two largest urban areas of the country. The Estonian language is the autochthonous and the official language of Estonia; it is the first language of the majority of its population, as well as the world's second most spoken Finnic language. The land of what is now modern Estonia has been inhabited by '' Homo sapiens'' since at least 9,000 BC. The medieval indigenous population of Estonia was one of the last " pagan" civilisations in Europe to adopt Ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lääne-Viru County
Lääne-Viru County ( et, Lääne-Viru maakond or ''Lääne-Virumaa'') is one of 15 counties of Estonia. It is in northern Estonia, on the south coast of the Gulf of Finland. In Estonian, ''lääne'' means western and ''ida'' means east or eastern. Lääne-Viru borders Ida-Viru County to the east, Jõgeva County to the south, and Järva and Harju counties to the west. In January 2013, Lääne-Viru County had a population of 58,806: 4.5% of the population in Estonia. History In prehistoric times, Lääne-Virumaa was settled by Estonians of the Vironian tribe. County Government The County Government ( et, maavalitsus) is led by a governor ( et, maavanem), who is appointed by the Government of Estonia. Since 2014, the governor position has been held by Marko Torm. The county seat is Rakvere. Municipalities The county is subdivided into municipalities. There is one urban municipality ( et, linnad – towns) and seven rural municipalities ( et, vallad – parishes) in Läà ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fermi Energia AS
Enrico Fermi (; 29 September 1901 – 28 November 1954) was an Italian (later naturalized American) physicist and the creator of the world's first nuclear reactor, the Chicago Pile-1. He has been called the "architect of the nuclear age" and the "architect of the atomic bomb". He was one of very few physicists to excel in both theoretical physics and experimental physics. Fermi was awarded the 1938 Nobel Prize in Physics for his work on induced radioactivity by neutron bombardment and for the discovery of transuranium elements. With his colleagues, Fermi filed several patents related to the use of nuclear power, all of which were taken over by the US government. He made significant contributions to the development of statistical mechanics, quantum theory, and nuclear and particle physics. Fermi's first major contribution involved the field of statistical mechanics. After Wolfgang Pauli formulated his exclusion principle in 1925, Fermi followed with a paper in which he applied ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SaskPower
Saskatchewan Power Corporation, operating as SaskPower, is the principal electric utility in Saskatchewan, Canada. Established in 1929 by the provincial government, it serves more than 538,000 customers and manages over $11.8 billion in assets. SaskPower is a major employer in the province with over 3,100 permanent full-time staff located in approximately 70 communities.SaskPower 2019, p. 2. Legal status SaskPower was founded as the Saskatchewan Power Commission in 1929, becoming the Saskatchewan Power Corporation in 1949 with the passage of ''The Rural Electrification Act''. The abbreviated name SaskPower was officially adopted as a trade name in 1987. Owned by the government through its holding company, the Crown Investments Corporation, SaskPower is governed by a Board of Directors who are accountable to the provincial government Minister Responsible for Saskatchewan Power Corporation. SaskPower has the exclusive right and the exclusive obligation to supply electricity in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PKN Orlen
Polski Koncern Naftowy Orlen Spółka Akcyjna (PKN Orlen S.A.), commonly known as Orlen, is a Polish oil refiner and petrol retailer. The corporation is a significant European publicly traded firm with major operations in Poland, Czech Republic, Slovakia, Germany, and the Baltic states as well as an operation in Canada. In February 2022, the Polish state was the first shareholder of the company with 27.52% of the shares. PKN Orlen is the fourth largest company in Central and Eastern Europe and is listed in global rankings such as ''Fortune'' Global 500, Platts TOP250 and Thompson Reuters TOP100. History Foundation (1999) The firm was created through the merger of two state-run petrochemical firms: C.P.N. (Centrala Produktów Naftowych), Communist Poland's petroleum retail monopoly and Petrochemia Płock, the state firm in charge of the oil refineries in Płock, the largest complex of its kind in Poland. After the merger of CPN and Petrochemia Płock in 1999, the company was r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ontario Power Generation
Ontario Power Generation Inc. (OPG) is a Crown corporations of Canada, Crown corporation and "government business enterprise" that is responsible for approximately half of the electricity generation in the province of Ontario, Canada. It is wholly owned by the government of Ontario. Sources of electricity include nuclear power, nuclear, hydroelectric, wind power, wind, natural gas, gas and biomass. Although Ontario has an open electricity market, the provincial government, as OPG's sole shareholder, regulates the price the company receives for its electricity to be less than the market average, in an attempt to stabilize prices. Since 1 April 2008, the company's rates have been regulated by the Ontario Energy Board. On 10 June 2019, it was announced that a new corporate campus would be built in Clarington, Ontario, that will also house Ontario Power Generation's headquarters. Establishment Ontario Power Generation was established in April 1999 as part of plans by the Progress ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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