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Toshiba 4S
The Toshiba 4S (Ultra super safe, Small and Simple) is a micro sodium reactor design. General description The plant design is developed by a partnership that includes Toshiba and the Central Research Institute of Electric Power Industry (CRIEPI) of Japan. The technical specifications of the 4S reactor are unique in the nuclear industry. The actual reactor would be located in a sealed, cylindrical vault 30 m (98 ft) underground, while the building above ground would be 22×16×11 m (72×52.5×36 ft) in size. This power plant is designed to provide 10 megawatts of electrical power with a 50 MW version available in the future. The 4S is a fast neutron sodium reactor. It uses neutron reflector panels around the perimeter to maintain neutron density. These reflector panels replace complicated control rods, yet keep the ability to shut down the nuclear reaction in case of an emergency. Additionally, the Toshiba 4S utilizes liquid sodium as a coolant, allowing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micro Nuclear 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] |
Galena Nuclear Power Plant
The Galena Nuclear Power Plant was a proposed nuclear power plant to be constructed in the Yukon River village of Galena, Alaska. If it had been built in the projected timeframe, it would have been the first non-military nuclear power plant built in Alaska to be utilized for public utility generation. In April 2008, Marvin Yoder, a consultant on the project, said that Toshiba was planning to make the application to the Nuclear Regulatory Commission in 2009, and that if approval had been given in 2010 or 2011, the reactor could have been operational by 2012 or 2013. The company was also developing a 50 megawatt (electric) version of the reactor. The plan had been to build a 10-megawatt Toshiba 4S reactor that would have been buried underground, and fuel would have powered the reactor for 30 years. According to Dennis Witmer, an energy consultant with the Center for Energy and Power at the University of Alaska Fairbanks, the project was "effectively stalled." Toshiba never began the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traveling Wave Reactor
A traveling-wave reactor (TWR) is a proposed type of nuclear fission reactor that can convert fertile material into usable fuel through nuclear transmutation, in tandem with the burnup of fissile material. TWRs differ from other kinds of fast-neutron and breeder reactors in their ability to use fuel efficiently without uranium enrichment or reprocessing, instead directly using depleted uranium, natural uranium, thorium, spent fuel removed from light water reactors, or some combination of these materials. The concept is still in the development stage and no TWRs have ever been built. The name refers to the fact that fission remains confined to a boundary zone in the reactor core that slowly advances over time. TWRs could theoretically run self-sustained for decades without refueling or removing spent fuel. History Traveling-wave reactors were first proposed in the 1950s and have been studied intermittently. The concept of a reactor that could breed its own fuel inside the react ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B&W MPower
The B&W mPower was a proposed small modular reactor designed by Babcock & Wilcox, and to be built by Generation mPower LLC, a joint venture of Babcock & Wilcox and Bechtel. It was a Generation III+ integral pressurized water reactor (light water reactor) concept. In March 2017, Bechtel withdrew from the joint venture and the project was terminated. History The reactor was unveiled by Babcock & Wilcox in June 2009. In July 2010, Babcock & Wilcox announced a formal alliance with Bechtel called Generation mPower LLC. At the same time, Babcock & Wilcox announced that it would build a test facility for the mPower reactor design at the Center for Advanced Engineering and Research in Bedford County, Virginia. In April 2011, Babcock & Wilcox received a $5 million grant from thVirginia Tobacco IndemnificationanCommunity Revitalisation Commissionfor this test facility. In June 2011 Generation mPower signed a letter of intent with the Tennessee Valley Authority for constructing up to six r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperion Power Generation
Gen4 Energy, Inc (formerly Hyperion Power Generation, Inc.Hyperion Power Generation Inc. Announces Change of Company Name to Gen4 Energy, Inc. 13 March 2012, BusinessWire) was a privately held formed to construct and sell several designs of relatively small (70 MW thermal, 25 MW electric) s, which they claimed would be |
NuScale
NuScale Power is a publicly traded American company that designs and markets small modular reactors (SMRs). It is headquartered in Tigard, Oregon, United States. NuScale has been approved to build reactors in Idaho, in 2029 and 2030. The design was approved for certification in July 2022. NuScale's SMR designs are for diameter by high reactor vessels that use conventional light water cooling methods and run on low enriched uranium fuel assemblies based on existing light water reactor designs. Each module is intended to be kept in an underground pool and is expected to produce about 60 megawatts of electricity. Its coolant loop uses natural water-circulation, fed from a large water reservoir, that can operate without powered pumps. NuScale was founded based on research funded by the United States Department of Energy from 2000 to 2003. After funding was cut, scientists with the program obtained related patents in 2007 and started NuScale to commercialize the technology. Cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAREM
Carem or Karem is a place mentioned in the Septuagint translation of the Hebrew Bible as being a town situated in the hill country of the tribe of Judah, while the Masoretic Text and Vulgate do not mention the name (see ). Identification According to the ''Catholic Encyclopedia'', Carem has been identified by some scholars with Beit HaKerem (Bethhaccerem), a town that is mentioned in the biblical Book of Jeremiah and Book of Nehemiah . It is most often associated with Ein Karem, a town currently included in the municipality of Jerusalem. From the twelfth century CE onward there are many Christian writers who claim that Carem/Ein Karem was the "city of Judah" in the "hill country" mentioned in , the home of Zechariah and Elizabeth, parents of John the Baptist, where Elizabeth received the visit of her cousin, the Virgin Mary. The tradition thus identifies Ein Karem as the birthplace of John the Baptist. Many Christians cite the existence of manuscripts as evidence in favour of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NuScale Power
NuScale Power is a publicly traded American company that designs and markets small modular reactors (SMRs). It is headquartered in Tigard, Oregon, United States. NuScale has been approved to build reactors in Idaho, in 2029 and 2030. The design was approved for certification in July 2022. NuScale's SMR designs are for diameter by high reactor vessels that use conventional light water cooling methods and run on low enriched uranium fuel assemblies based on existing light water reactor designs. Each module is intended to be kept in an underground pool and is expected to produce about 60 megawatts of electricity. Its coolant loop uses natural water-circulation, fed from a large water reservoir, that can operate without powered pumps. NuScale was founded based on research funded by the United States Department of Energy from 2000 to 2003. After funding was cut, scientists with the program obtained related patents in 2007 and started NuScale to commercialize the technology. Cor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proceedings Of The National Academy Of Sciences Of The United States Of America
''Proceedings of the National Academy of Sciences of the United States of America'' (often abbreviated ''PNAS'' or ''PNAS USA'') is a peer-reviewed multidisciplinary scientific journal. It is the official journal of the National Academy of Sciences, published since 1915, and publishes original research, scientific reviews, commentaries, and letters. According to ''Journal Citation Reports'', the journal has a 2021 impact factor of 12.779. ''PNAS'' is the second most cited scientific journal, with more than 1.9 million cumulative citations from 2008 to 2018. In the mass media, ''PNAS'' has been described variously as "prestigious", "sedate", "renowned" and "high impact". ''PNAS'' is a delayed open access journal, with an embargo period of six months that can be bypassed for an author fee ( hybrid open access). Since September 2017, open access articles are published under a Creative Commons license. Since January 2019, ''PNAS'' has been online-only, although print issues are ava ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodney C
Rodney may refer to: People * Rodney (name) * Rodney (wrestler), American professional wrestler Places ;Australia * Electoral district of Rodney, a former electoral district in Victoria * Rodney County, Queensland ;Canada * Rodney, Ontario, a village located within the township of West Elgin, Ontario ;New Zealand * Rodney District, a former territorial local authority district * Rodney (local board area), a local government area ** Rodney Local Board, an Auckland Council local board ** Rodney Ward, an Auckland Council ward * Rodney (New Zealand electorate), an electoral district containing most of Rodney District ;United States * Rodney, Iowa * Rodney, Mississippi, a former city * Rodney, Ohio * Rodney, Wisconsin, a ghost town * Rodney Village, Delaware * Rodney Scout Reservation Delmarva Council, Northeast, Maryland Other uses * ''Rodney'' (TV series) * Rodney boat A rodney or punt is a small Newfoundland wooden boat typically used by one man for hook and line fishing Fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allison Macfarlane
Allison M. Macfarlane directs the School of Public Policy and Global Affairs at the University of British Columbia. She is the former director of the Institute for International Science and Technology Policy at George Washington University, where she was Professor of Science Policy and International Affairs. She was the chairman of the United States Nuclear Regulatory Commission (NRC) from July 9, 2012, to December 31, 2014. Education and career Macfarlane was educated at the University of Rochester, where she earned B.Sc. in Geological Sciences in 1987, and at Massachusetts Institute of Technology, where she earned a Ph.D. in Geology in 1992. She held fellowships at Radcliffe College, Harvard University, Stanford University, and MIT. She was also assistant professor of earth science and international affairs at Georgia Tech from 2003-4. Prior to taking the top position at the NRC, Dr. Macfarlane was an associate professor of environmental science and policy at George Mason Univer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liquid Metal Cooled Reactor
A liquid metal cooled nuclear reactor, liquid metal fast reactor or LMFR is an advanced type of nuclear reactor where the primary coolant is a liquid metal. Liquid metal cooled reactors were first adapted for nuclear submarine use and have been studied for power generation applications. Metal coolants remove heat more rapidly and allow much higher power density. This makes them attractive in situations where size and weight are at a premium, like on ships and submarines. To improve cooling with water, most reactor designs are highly pressurized to raise the boiling point, which presents safety and maintenance issues that liquid metal designs lack. Additionally, the high temperature of the liquid metal can be used to produce vapour at higher temperature than in a water cooled reactor, leading to a higher thermodynamic efficiency. This makes them attractive for improving power output in conventional nuclear power plants. Liquid metals, being electrically highly conductive, can be m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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