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Core Catcher
A core catcher is a device provided to catch the molten core material ( corium) of a nuclear reactor in case of a nuclear meltdown and prevent it from escaping the containment building. A core catcher is made from a special thermally resistant concrete ceramic to prevent nuclear core material from melting through the core catcher; it also has a cooling mechanism to cool down the core material. The core catcher of the European Pressurized Reactor (EPR) has 170 m2 expansion area and a mass of 500 t. Examples of reactor types with core catchers, besides the EPR, are: * SNR-300 (fast breeder)Areva Brochure: EPR - reference number:G-61-V1-07-GER * AES-91 / VVER-1000/428 * VVER-1200(PWR) * SWR1000 (BWR) * ESBWR ( BWR) * ABWR (BWR) * APWR ( PWR) * Atmea I (PWR) * ACPR-1000 (PWR) * EU-APR1400 (PWR) * IPWR-900 The AES-91, a project of Atomstroyexport based on the VVER-1000 design, was envisaged to be the first type of nuclear plant to have a core catcher directly und ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Schemata Core Catcher EPR
Schema may refer to: Science and technology * SCHEMA (bioinformatics), an algorithm used in protein engineering * Schema (genetic algorithms), a set of programs or bit strings that have some genotypic similarity * Schema.org, a web markup vocabulary * Schema (logic) ** Axiom schema, in formal logic * Image schema, a recurring pattern of spatial sensory experience * Database schema * XML schema Other * Body schema, a neural representation of one's own bodily posture * Galant Schemata, stock phrases in Galant music * Schema (Kant), in philosophy * Schema (psychology), a mental set or representation * Schema Records, a jazz record label in Milan, Italy *, a solemn vow of asceticism of a monk in Orthodox monasticism ** Great Schema, the highest degree of Orthodox monasticism * ''Schema'' (fly), a genus of insects See also * Scheme (other) * Schematic * Skema (other) SKEMA Business School ("School of Knowledge Economy and Management") is a leading French busin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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ABWR
The advanced boiling water reactor (ABWR) is a Generation III boiling water reactor. The ABWR is currently offered by GE Hitachi Nuclear Energy (GEH) and Toshiba. The ABWR generates electrical power by using steam to power a turbine connected to a generator; the steam is boiled from water using heat generated by fission reactions within nuclear fuel. Kashiwazaki-Kariwa unit 6 is considered the first Generation III reactor in the world. Boiling water reactors (BWRs) are the second most common form of light water reactor with a direct cycle design that uses fewer large steam supply components than the pressurized water reactor (PWR), which employs an indirect cycle. The ABWR is the present state of the art in boiling water reactors, and is the first Generation III reactor design to be fully built, with several reactors complete and operating. The first reactors were built on time and under budget in Japan, with others under construction there and in Taiwan. ABWRs were on orde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Rooppur Nuclear Power Plant
The Rooppur Nuclear Power Plant () is a 2.4 GWe nuclear power plant currently under construction in Bangladesh. It consists of two 1200 MWe VVER-1200 reactors. The nuclear power plant is being constructed at Rooppur in Ishwardi Upazila on the bank of the river Padma, about 160 km northwest of Dhaka. It will be the country's first nuclear power plant, and the first of the two units is expected to become operational in December 2025. History Planning The plan to establish a nuclear power plant in the then East Pakistan was made in 1961. In 1963, the Rooppur village of the Pabna district was selected for the proposed plant and 260 acres of land was acquired. The plan was to establish a 200MW nuclear power plant on the selected site. The plan to construct a 200 MW power plant was completed in 1969 with the assistance of Belgium. However, in 1969-1971, the project was scrapped by the then Pakistan government. After Bangladesh gained independence, the government of Bangladesh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Rosatom
State Atomic Energy Corporation Rosatom (commonly referred to as Rosatom rus, Росатом, p=rosˈatəm}), also known as Rosatom State Nuclear Energy Corporation, (), or Rosatom State Corporation, is a Russian State corporation (Russia), state corporation headquartered in Moscow that specializes in Nuclear power in Russia, nuclear energy, nuclear non-energy goods and high-tech products. It was established in 2007 and comprises more than 350 enterprises, including scientific research organizations, a Nuclear weapon, nuclear weapons complex, and the world's only Nuclear-powered icebreaker, nuclear icebreaker fleet. The organization is the largest electricity generating company in Russia, producing 217.4 TWh of electricity, 20.28% of the country's total electricity production. The corporation ranks first in overseas nuclear power plant construction, responsible for 90% of global nuclear technology exports: 22 nuclear power plant units, at different stages of development, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Tianwan Nuclear Power Plant
Tianwan Nuclear Power Plant is a nuclear power plant (NPP) on the coast of the Yellow Sea, approximately 30 kilometers east of downtown Lianyungang, Jiangsu Jiangsu is a coastal Provinces of the People's Republic of China, province in East China. It is one of the leading provinces in finance, education, technology, and tourism, with its capital in Nanjing. Jiangsu is the List of Chinese administra ... Province, China. The plant's owner is Jiangsu Nuclear Power Corporation, a joint venture with majority owner a subsidiary of China National Nuclear Corporation (CNNC). The plant is planned to have eight Soviet/Russian VVER-type reactor units, and full operation is expected to commence in 2027. Construction began in October 1999, and was the first instance of civilian nuclear cooperation between Russia and China. When all the units are complete, Tianwan will be the List of largest power stations#Nuclear, world's largest nuclear power plant, with generation capacity exce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Atomstroyexport
Atomstroyexport (ASE) JSC () is the Russian Federation's nuclear power equipment and service exporter. It is a fully owned subsidiary of Rosatom. Organization Atomstroyexport, along with Atomenergoprom, is part of Rosatom's ''Engineering Division'', which is the corporation's main nuclear power plant (NPP) construction and export business. ASE's flagship product is the VVER reactor. Rosatom's NPP operating company is Rosenergoatom. In addition, ASE is closely associated with Atomenergomash, Rosatom's manufacturer of NPP equipment. Alexander Lokshin, former CEO of Rosenergoatom, now the ''First Deputy CEO for Operations Management'' at Rosatom, is associated with ASE Group of Companies. History The first research reactor was built and launched in China, at the "Institute of Nuclear Physics," in 1958. After two years in the city of Lanzhou to her it was erected a "Physical Institute". In it was an accelerator of the brand "U-150", specially built at the Izhorskiye Zavody for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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IPWR-900
The Indian Pressurized Water Reactor-900 (IPWR-900) is a class of pressurized water reactors being designed by the Bhabha Atomic Research Centre (BARC) in partnership with the Nuclear Power Corporation of India Limited to supplement the Indian three-stage nuclear power programme. History BARC has developed a 83 MW compact light water reactor known as CLWR-B1 for the Indian Navy's Arihant-class submarine program which includes a prototype reactor operating at Kalpakkam since 2002 and was made operational in the INS Arihant in 2013. The experience gained in the naval reactor program is being used to develop a commercial electricity generation reactor of 900 MWe capacity. To support the industrial capacity to fabricate the large forgings for a reactor pressure vessel, a heavy forge unit has been set up as a joint venture by the Nuclear Power Corporation of India Limited (NPCIL) and Indian engineering conglomerate Larsen & Toubro's subsidiary L&T Special Steels and Heavy Forging ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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CPR-1000
The CPR-1000, or CPR1000 (Chinese PWR) is a Generation II+ pressurized water reactor, based on the French 900 MWe three cooling loop design (M310) imported in the 1980s, improved to have a slightly increased net power output of 1,000 MWe (1080 MWe gross) and a 60-year design life. The CPR-1000 is built and operated by the China General Nuclear Power Group (CGNPG), formerly known as China Guangdong Nuclear Power. Progressively more Chinese manufactured components were used in the units; the second unit built had 70% of its equipment manufactured in China, with a 90% Chinese content target for later builds. Construction On 15 July 2010, China's first CPR-1000 nuclear power plant, Ling Ao-3, was connected to the grid, having started criticality testing on 11 June 2010. It started commercial operations on 27 September 2010, with Ling Ao-4 starting commercial operation on 7 August 2011. 18 CPR-1000 reactors have been built as of December 2019. Besides Ling Ao unit 3 & 4, the CPR ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Atmea
Atmea was a joint venture between Mitsubishi Heavy Industries (MHI) and EDF Group set up in 2006 to develop, market, license and sell the ATMEA1 reactor, a new generation III+, medium-power pressurized water reactor (PWR). The company was headquartered in Paris. The joint venture was abandoned in 2019. History A memorandum of understanding between AREVA and MHI effectively creating the entity was signed 19 October 2006 and the name of the joint venture was announced on 3 September 2007. The European Commission cleared the joint venture in October 2007 on the grounds that the activities of Areva and MHI were geographically complementary and Atmea was unlikely to strengthen the competitiveness of each parent company. The completion of the French nuclear industry reorganisation under EDF leadership in 2018 also led to a renewed partnership within ATMEA. ATMEA was initially formed as a joint venture between AREVA NP and MHI to develop the next-generation AT-MEA1 reactor. Under the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Pressurized Water Reactor
A pressurized water reactor (PWR) is a type of light-water nuclear reactor. PWRs constitute the large majority of the world's nuclear power plants (with notable exceptions being the UK, Japan, India and Canada). In a PWR, water is used both as a neutron moderator and as coolant fluid for the reactor core. In the core, water is heated by the energy released by the fission of atoms contained in the fuel. Using very high pressure (around 155 bar: 2250 psi) ensures that the water stays in a liquid state. The heated water then flows to a steam generator, where it transfers its thermal energy to the water of a secondary cycle kept at a lower pressure which allows it to vaporize. The resulting steam then drives steam turbines linked to an electric generator. A boiling water reactor (BWR) by contrast does not maintain such a high pressure in the primary cycle and the water thus vaporizes inside of the reactor pressure vessel (RPV) before being sent to the turbine. Most PWR designs ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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APWR
The Mitsubishi advanced pressurized water reactor (APWR) is a generation III nuclear reactor design developed by Mitsubishi Heavy Industries (MHI) based on pressurized water reactor technology. It features several design enhancements including a neutron reflector, improved efficiency and improved safety systems. It has safety features advanced over the last generation, including a combination of passive and active systems. None are currently under construction. History The standard APWR is going through the licensing process in Japan and two (of 1538 MWe) are being constructed at the Tsuruga plant. The next APWR+ will be of a 1700 MWe power and have full MOX core abilities. The US-APWR was developed by MHI to modify their APWR design to comply with US regulations. TXU selected the US-APWR for use at multiple sites, including the Comanche Peak Nuclear Generating Station. However, in 2013, Mitsubishi slowed U.S. certification work, and the application to build two units at Coman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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Boiling Water Reactor
A boiling water reactor (BWR) is a type of nuclear reactor used for the generation of electrical power. It is the second most common type of electricity-generating nuclear reactor after the pressurized water reactor (PWR). BWR are thermal neutron reactors, where water is thus used both as a coolant and as a moderator, slowing down neutrons. As opposed to PWR, there is no separation between the reactor pressure vessel (RPV) and the steam turbine in BWR. Water is allowed to vaporize directly inside of the reactor core (at a pressure of approximately 70 bars) before being directed to the turbine which drives the electric generator. Immediately after the turbine, a heat exchanger called a condenser brings the outgoing fluid back into liquid form before it is sent back into the reactor. The cold side of the condenser is made up of the plant's secondary coolant cycle which is fed by the power plant's cold source (generally the sea or a river, more rarely air). The BWR was developed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |