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Neckarwestheim Nuclear Power Plant
Neckarwestheim Nuclear Power Station is a nuclear power plant in Neckarwestheim, Germany, sometimes abbreviated GKN (for ), operated by EnBW Kernkraft GmbH, a subsidiary of EnBW. As part of the nuclear power phase-out, it was taken out of service on April 15, 2023. GKN 1 Unit I, in service since 1976, carried a nominal electrical power of 840 megawatts. The 50 Hz three phase AC power was 567 megawatts and for the 16.7 Hz traction current power 174 MW. The traction current generator is the world's largest single-phase AC generators. The generator block 1 is rated 21,000 volts at a current of 27,000 amperes, and the traction current generator is rated 14,500 volts and a current of 12,000 amperes. The current produced by the generators was stepped up to 220 kilovolts (three-phase alternating current) or 110 kilovolts (single-phase traction current) with the unit transformers. Unit I was the only nuclear power station wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neckarwestheim
Neckarwestheim is a municipality with 3524 inhabitants in the Heilbronn district, Baden-Württemberg, in south-west Germany. It is located on the Neckar river and is well known as the location of a nuclear power station, the Neckarwestheim Nuclear Power Plant. Geography Geographical position Neckarwestheim is located in the south of the District of Heilbronn. Neighbouring municipalities Neighbouring towns and municipalities of Neckarwestheim are (clockwise): Lauffen (Neckar), Ilsfeld (both in the same district), Großbottwar, Mundelsheim, Besigheim, Gemmrigheim and Kirchheim (Neckar) (all of the district of Ludwigsburg). History Neckarwestheim was first mentioned on March 5, 1123, in a document of Holy Roman Emperor Henry V called Westheim. In 1673, the region was called Württemberg and the town was renamed to Kaltenwesten. On August 19, 1884, it was renamed in Neckarwestheim by a royal decree. In 1938 the district was named Heilbronn. After World War II, the currentl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Becquerel
The becquerel (; symbol: Bq) is the unit of radioactivity in the International System of Units (SI). One becquerel is defined as an activity of one per second, on average, for aperiodic activity events referred to a radionuclide. For applications relating to human health this is a small quantity, and SI multiples of the unit are commonly used. The becquerel is named after Henri Becquerel, who shared a Nobel Prize in Physics with Pierre and Marie Curie in 1903 for their work in discovering radioactivity. Definition 1 Bq = 1 s−1 A special name was introduced for the reciprocal second (s) to represent radioactivity to avoid potentially dangerous mistakes with prefixes. For example, 1 μs would mean 10 disintegrations per second: , whereas 1 μBq would mean 1 disintegration per 1 million seconds. Other names considered were hertz (Hz), a special name already in use for the reciprocal second (for ''periodic'' events of any kind), and fourier (Fr; after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Reactor Technology
A nuclear reactor is a device used to initiate and control a fission nuclear chain reaction. They are used for commercial electricity, marine propulsion, weapons production and research. Fissile nuclei (primarily uranium-235 or plutonium-239) absorb single neutrons and split, releasing energy and multiple neutrons, which can induce further fission. Reactors stabilize this, regulating neutron absorbers and moderators in the core. Fuel efficiency is exceptionally high; low-enriched uranium is 120,000 times more energy dense than coal. Heat from nuclear fission is passed to a working fluid coolant. In commercial reactors, this drives turbines and electrical generator shafts. Some reactors are used for district heating, and isotope production for medical and industrial use. Following the 1938 discovery of fission, many countries initiated military nuclear research programs. Early subcritical experiments probed neutronics. In 1942, the first artificial critical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neckarwestheim 1
Neckarwestheim is a municipality with 3524 inhabitants in the Heilbronn district, Baden-Württemberg, in south-west Germany. It is located on the Neckar river and is well known as the location of a nuclear power station, the Neckarwestheim Nuclear Power Plant. Geography Geographical position Neckarwestheim is located in the south of the District of Heilbronn. Neighbouring municipalities Neighbouring towns and municipalities of Neckarwestheim are (clockwise): Lauffen (Neckar), Ilsfeld (both in the same district), Großbottwar, Mundelsheim, Besigheim, Gemmrigheim and Kirchheim (Neckar) (all of the district of Ludwigsburg). History Neckarwestheim was first mentioned on March 5, 1123, in a document of Holy Roman Emperor Henry V called Westheim. In 1673, the region was called Württemberg and the town was renamed to Kaltenwesten. On August 19, 1884, it was renamed in Neckarwestheim by a royal decree. In 1938 the district was named Heilbronn. After World War II, the currently agr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cooling Tower
A cooling tower is a device that rejects waste heat to the atmosphere through the cooling of a coolant stream, usually a water stream, to a lower temperature. Cooling towers may either use the evaporation of water to remove heat and cool the working fluid to near the Wet-bulb temperature, wet-bulb air temperature or, in the case of ''dry cooling towers'', rely solely on air to cool the working fluid to near the Dry-bulb temperature, dry-bulb air temperature using Radiator, radiators. Common applications include cooling the circulating water used in oil refineries, petrochemical and other chemical plants, thermal power stations, nuclear power stations and HVAC systems for cooling buildings. The classification is based on the type of air induction into the tower: the main types of cooling towers are Natural convection, natural draft and Forced convection, induced draft cooling towers. Cooling towers vary in size from small roof-top units to very large hyperboloid structures t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Containment Building
A containment building is a reinforced steel, concrete or lead structure enclosing a nuclear reactor. It is designed, in any emergency, to contain the escape of radioactive steam or gas to a maximum pressure in the range of . The containment is the fourth and final barrier to radioactive release (part of a nuclear reactor's defence in depth strategy), the first being the fuel ceramic itself, the second being the metal fuel cladding tubes, the third being the reactor vessel and coolant system. Each nuclear plant in the United States is designed to withstand certain conditions which are spelled out as "Design Basis Accidents" in the Final Safety Analysis Report (FSAR). The FSAR is available for public viewing, usually at a public library near the nuclear plant. The containment building itself is typically an airtight steel structure enclosing the reactor, normally sealed off from the outside atmosphere. The steel is either free-standing or attached to the concrete missile shiel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ABB Group
ABB Group is a Swedish-Swiss multinational electrical engineering corporation. Incorporated in Switzerland as ABB Ltd., and headquartered in Zurich, it is dual-listed on the Nasdaq Nordic exchange in Stockholm, Sweden, and the SIX Swiss Exchange in Zurich. ABB was ranked 340th in the Fortune Global 500 list of 2020 and has been a global Fortune 500 company for 24 years. ABB was formed in 1988, when Sweden's Allmänna Svenska Elektriska Aktiebolaget (ASEA) and Switzerland's Brown, Boveri & Cie merged to create Asea Brown Boveri, later simplified to the initials ABB. Both companies were established in the late 1800s and grew into major electrical equipment manufacturers, a business in which ABB remains active. Its traditional core activities include power generation, transmission and distribution; industrial automation, and robotics. Between 1989 and 1999, the company was also active in the rolling stock manufacturing sector. Throughout the 1990s and 2000s, ABB acquired hundr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gate Turn-off Thyristor
A gate turn-off thyristor (GTO) is a type of high-power (e.g. 1200 V AC) thyristor that unlike a normal thyristor is fully controllable and can be turned On and Off by their gate lead. It was invented by General Electric. Device description Normal thyristors ( silicon-controlled rectifiers) are not fully controllable switches (a fully controllable switch can be turned on and off at will). Thyristors can only be turned on using the gate lead, but cannot be turned off using the gate lead. Thyristors are switched on by a gate signal, but even after the gate signal is de-asserted (removed, reverse biased), the thyristor remains in the on state until a turn-off condition occurs (which can be the application of a reverse voltage to the terminals or a decrease of the forward current below a certain threshold value known as the ''holding current''). Thus, a thyristor behaves like a normal semiconductor diode after it is turned on, or ''fired''. The GTO can be turned on by a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traction Power Network
A traction network or traction power network is an electricity grid for the supply of electrified rail networks. The installation of a separate traction network generally is done only if the railway in question uses alternating current (AC) with a frequency lower than that of the national grid, such as in Germany, Austria and Switzerland. Alternatively, the three-phase alternating current of the power grid can be converted in substations by rotary transformers or static inverters into the voltage and type of current required by the trains. For railways which run on direct current (DC), this method is always used, as well as for railways which run on single-phase AC of decreased frequency, as in Mecklenburg-Western Pomerania, Saxony-Anhalt, Norway and Sweden. In these areas there are no traction current networks. History Separate power for traction apart from industrial power has historic roots. There is no reason today to apply different frequencies or current types than for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
