Misplaced Pages

#20979

87-524: Neckarwestheim Nuclear Power Station is a nuclear power plant in Neckarwestheim , Germany , sometimes abbreviated GKN (for German : G emeinschafts k raftwerk N eckar ), 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. Unit I, in service since 1976, carried a nominal electrical power of 840  megawatts . The 50 Hz three phase AC power

174-602: A nuclear power station ( NPS ), nuclear generating station ( NGS ) or atomic power station ( APS ) is a thermal power station in which the heat source is a nuclear reactor . As is typical of thermal power stations, heat is used to generate steam that drives a steam turbine connected to a generator that produces electricity . As of September 2023 , the International Atomic Energy Agency reported that there were 410 nuclear power reactors in operation in 32 countries around

261-488: A company's business decisions, including those in operations, marketing, business development , finance, human resources , etc. The use of the CEO title is not necessarily limited to describing the head of a company. For example, the CEO of a political party is often entrusted with fundraising, particularly for election campaigns. In some countries, there is a dual board system with two separate boards, one executive board for

348-465: A condenser. The condenser is a heat exchanger which is connected to a secondary side such as a river or a cooling tower . The water is then pumped back into the steam generator and the cycle begins again. The water-steam cycle corresponds to the Rankine cycle . The nuclear reactor is the heart of the station. In its central part, the reactor's core produces heat due to nuclear fission. With this heat,

435-442: A coolant is heated as it is pumped through the reactor and thereby removes the energy from the reactor. The heat from nuclear fission is used to raise steam, which runs through turbines , which in turn power the electrical generators. Nuclear reactors usually rely on uranium to fuel the chain reaction. Uranium is a very heavy metal that is abundant on Earth and is found in sea water as well as most rocks. Naturally occurring uranium

522-424: A corporation or company typically reports to the board of directors and is charged with maximizing the value of the business, which may include maximizing the profitability , market share , revenue , or another financial metric. In the nonprofit and government sector, CEOs typically aim at achieving outcomes related to the organization's mission, usually provided by legislation . CEOs are also frequently assigned

609-402: A facade of charm and eloquence. Traits such as courage and risk-taking, generally considered desirable, are often found alongside these psychopathic tendencies. Tara Swart, a neuroscientist at MIT Sloan School of Management , has suggested that individuals with psychopathic traits thrive in chaotic environments and are aware that others do not. As a result, they may intentionally create chaos in

696-402: A facility has been completely decommissioned it is released from regulatory control, and the licensee of the station no longer has responsibility for its nuclear safety. Generally speaking, nuclear stations were originally designed for a life of about 30 years. Newer stations are designed for a 40 to 60-year operating life. The Centurion Reactor is a future class of nuclear reactor that

783-462: A formal delegation of authority regarding business administration . Typically, responsibilities include being an active decision-maker on business strategy and other key policy issues, as well as leader , manager, and executor roles. The communicator role can involve speaking to the press and to the public, as well as to the organization's management and employees; the decision-making role involves high-level decisions about policy and strategy. The CEO

870-410: A nominal electrical power of 1400 megawatts. The generator produces 50 Hz three-phase alternating current with a voltage of 27,000 V and a current of 35,000 amperes. Unlike Unit 1, no dedicated traction current generation takes place, but some of the power produced is converted at the traction current substation. This is transmitted through the 380 kV generator transformer block of

957-404: A nuclear reactor heats the reactor coolant. The coolant may be water or gas, or even liquid metal, depending on the type of reactor. The reactor coolant then goes to a steam generator and heats water to produce steam. The pressurized steam is then usually fed to a multi-stage steam turbine . After the steam turbine has expanded and partially condensed the steam, the remaining vapor is condensed in

SECTION 10

#1732802201021

1044-683: A nuclear reactor was used to generate electricity was on December 21, 1951, at the Experimental Breeder Reactor I , powering four light bulbs. On June 27, 1954, the world's first nuclear power station to generate electricity for a power grid , the Obninsk Nuclear Power Plant , commenced operations in Obninsk , in the Soviet Union . The world's first full scale power station, Calder Hall in

1131-483: A nuclear station is smaller than the fuel cost for operation of coal or gas plants. Since most of the cost of nuclear power plant is capital cost, there is almost no cost saving by running it at less than full capacity. Nuclear power plants are routinely used in load following mode on a large scale in France, although "it is generally accepted that this is not an ideal economic situation for nuclear stations". Unit A at

1218-516: A number of long-established projects are struggling to find financing, notably Belene in Bulgaria and the additional reactors at Cernavodă in Romania , and some potential backers have pulled out. Where cheap gas is available and its future supply relatively secure, this also poses a major problem for nuclear projects. Analysis of the economics of nuclear power must take into account who bears

1305-444: A previous goal aimed to reduce nuclear electricity generation share to lower than fifty percent by 2025, this target was postponed to 2035 in 2019 and ultimately discarded in 2023. Russia continues to export the most nuclear power plants in the world, with projects across various countries: as of July 2023, Russia was constructing 19 out of 22 reactors constructed by foreign vendors; however, some exporting projects were canceled due to

1392-591: A significantly different evaluation of the economics of new nuclear power stations. Following the 2011 Fukushima nuclear accident in Japan , costs are likely to go up for currently operating and new nuclear power stations, due to increased requirements for on-site spent fuel management and elevated design basis threats. However many designs, such as the currently under construction AP1000, use passive nuclear safety cooling systems, unlike those of Fukushima I which required active cooling systems, which largely eliminates

1479-413: A slight decrease from the 2653 TWh produced in 2021. Thirteen countries generated at least one-quarter of their electricity from nuclear sources. Notably, France relies on nuclear energy for about 70% of its electricity needs, while Ukraine , Slovakia , Belgium , and Hungary source around half their power from nuclear. Japan , which previously depended on nuclear for over a quarter of its electricity,

1566-427: A small enough volume to become supercritical. Most reactors require continuous temperature control to prevent a core meltdown , which has occurred on a few occasions through accident or natural disaster, releasing radiation and making the surrounding area uninhabitable. Plants must be defended against theft of nuclear material and attack by enemy military planes or missiles. The most serious accidents to date have been

1653-599: A source of criticism following a dramatic rise in pay relative to the average worker's wage . For example, the relative pay was 20-to-1 in 1965 in the US, but had risen to 376-to-1 by 2000. The relative pay differs around the world, and, in some smaller countries, is still around 20-to-1. Observers differ as to whether the rise is due to competition for talent or due to lack of control by compensation committees. In recent years, investors have demanded more say over executive pay. Lack of diversity amongst chief executives has also been

1740-504: A source of criticism. In 2018, 5% of Fortune 500 CEOs were women. In 2023 the number rose to 10.4% of for Women CEO's of Fortune 500 companies . The reasons for this are explained or justified in various ways, and may include biological sex differences, male and female differences in Big Five personality traits and temperament, sex differences in psychology and interests, maternity and career breaks, hypergamy , phallogocentrism ,

1827-482: A three-year research study of offshore floating nuclear power generation. In October 2022, NuScale Power and Canadian company Prodigy announced a joint project to bring a North American small modular reactor based floating plant to market. The economics of nuclear power plants is a controversial subject, and multibillion-dollar investments ride on the choice of an energy source. Nuclear power stations typically have high capital costs, but low direct fuel costs, with

SECTION 20

#1732802201021

1914-580: A worldwide perspective, long-term waste storage costs are uncertain. Construction, or capital cost aside, measures to mitigate global warming such as a carbon tax or carbon emissions trading , increasingly favor the economics of nuclear power. Further efficiencies are hoped to be achieved through more advanced reactor designs, Generation III reactors promise to be at least 17% more fuel efficient, and have lower capital costs, while Generation IV reactors promise further gains in fuel efficiency and significant reductions in nuclear waste. In Eastern Europe,

2001-482: Is about 1/3 of solar and 1/45 of natural gas and 1/75 of coal . Newer models, like HPR1000 , produce even less carbon dioxide during the whole operating life, as little as 1/8 of power plants using gen II reactors for 1.31g/kWh. Managing director CEOs find roles in various organizations, including public and private corporations , nonprofit organizations , and even some government organizations (notably state-owned enterprises ). The governor and CEO of

2088-527: Is anticipated to resume similar levels of nuclear energy utilization. Over the last 15 years, the United States has seen a significant improvement in the operational performance of its nuclear power plants, enhancing their utilization and efficiency, adding the output equivalent to 19 new 1000 MWe reactors without actual construction. In France, nuclear power plants still produce over sixty percent of this country's total power generation in 2022. While

2175-503: Is being designed to last 100 years. One of the major limiting wear factors is the deterioration of the reactor's pressure vessel under the action of neutron bombardment, however in 2018 Rosatom announced it had developed a thermal annealing technique for reactor pressure vessels which ameliorates radiation damage and extends service life by between 15 and 30 years. Nuclear stations are used primarily for base load because of economic considerations. The fuel cost of operations for

2262-431: Is found in two different isotopes : uranium-238 (U-238), accounting for 99.3% and uranium-235 (U-235) accounting for about 0.7%. U-238 has 146 neutrons and U-235 has 143 neutrons. Different isotopes have different behaviors. For instance, U-235 is fissile which means that it is easily split and gives off a lot of energy making it ideal for nuclear energy. On the other hand, U-238 does not have that property despite it being

2349-402: Is often used in lieu of chief executive officer. Business publicists since the days of Edward Bernays (1891–1995) and his client John D. Rockefeller (1839–1937) and even more successfully the corporate publicists for Henry Ford , promoted the concept of the " celebrity CEO". Business journalists have often adopted this approach, which assumes that the corporate achievements, especially in

2436-418: Is sometimes included as one such subordinate executive officer, but, as suggested by Anthony Johndrow, CEO of Reputation Economy Advisors, it can also be seen as "simply another way to add emphasis to the role of a modern-day CEO – where they are both the external face of, and the driving force behind, an organization culture". In the US, the term "chief executive officer" is used primarily in business, whereas

2523-427: Is tasked with implementing the goals, targets and strategic objectives as determined by the board of directors. As an executive officer of the company, the CEO reports the status of the business to the board of directors, motivates employees, and drives change within the organization. As a manager, the CEO presides over the organization's day-to-day operations. The CEO is the person who is ultimately accountable for

2610-429: Is the only nuclear facility that does not use a natural body of water for cooling, instead it uses treated sewage from the greater Phoenix metropolitan area. The water coming from the cooling body of water is either pumped back to the water source at a warmer temperature or returns to a cooling tower where it either cools for more uses or evaporates into water vapor that rises out the top of the tower. The water level in

2697-479: Is to prevent a conflict of interest and too much power being concentrated in the hands of one person. In the United States, the board of directors (elected by the shareholders ) is often equivalent to the supervisory board, while the executive board may often be known as the executive committee (the division/subsidiary heads and C-level officers that report directly to the CEO). In the United States, and in business,

Neckarwestheim Nuclear Power Plant - Misplaced Pages Continue

2784-489: The BWR , the steam is directed into the suppression chamber and condenses there. The chambers on a heat exchanger are connected to the intermediate cooling circuit. The main condenser is a large cross-flow shell and tube heat exchanger that takes wet vapor, a mixture of liquid water and steam at saturation conditions, from the turbine-generator exhaust and condenses it back into sub-cooled liquid water so it can be pumped back to

2871-552: The Dictionary says that the use of "CEO" as an acronym for a chief executive officer originated in Australia , with the first attestation being in 1914. The first American usage cited is from 1972. The responsibilities of an organization's CEO are set by the organization's board of directors or other authority, depending on the organization's structure. They can be far-reaching or quite limited, and are typically enshrined in

2958-496: The Russian invasion of Ukraine . Meanwhile, China continues to advance in nuclear energy: having 25 reactors under construction by late 2023, China is the country with the most reactors being built at one time in the world. Nuclear decommissioning is the dismantling of a nuclear power station and decontamination of the site to a state no longer requiring protection from radiation for the general public. The main difference from

3045-678: The UAE launched the Arab region's first-ever nuclear energy plant. Unit 1 of the Barakah plant in the Al Dhafrah region of Abu Dhabi commenced generating heat on the first day of its launch, while the remaining 3 Units are being built. However, Nuclear Consulting Group head, Paul Dorfman, warned the Gulf nation's investment into the plant as a risk "further destabilizing the volatile Gulf region, damaging

3132-657: The United Kingdom , opened on October 17, 1956 and was also meant to produce plutonium . The world's first full scale power station solely devoted to electricity production was the Shippingport Atomic Power Station in Pennsylvania , United States, which was connected to the grid on December 18, 1957. The conversion to electrical energy takes place indirectly, as in conventional thermal power stations. The fission in

3219-469: The 110 kV-traction current switchyard situated east of Neckarwestheim. This line is hung on pylons of unusual design with five cross beams. On the lowest cross bar there are two traction current circuits, while the second, third and fourth cross beam carry the three-phase circuits. These are operated, in the case of the GKN ;1, with 220 kV and in the case of the GKN 2 with 380 kV. On

3306-424: The 1970s and 1980s, when it "reached an intensity unprecedented in the history of technology controversies," in some countries. Proponents argue that nuclear power is a sustainable energy source which reduces carbon emissions and can increase energy security if its use supplants a dependence on imported fuels. Proponents advance the notion that nuclear power produces virtually no air pollution, in contrast to

3393-485: The 1979 Three Mile Island accident , the 1986 Chernobyl disaster , and the 2011 Fukushima Daiichi nuclear disaster , corresponding to the beginning of the operation of generation II reactors . Professor of sociology Charles Perrow states that multiple and unexpected failures are built into society's complex and tightly coupled nuclear reactor systems. Such accidents are unavoidable and cannot be designed around. An interdisciplinary team from MIT has estimated that given

3480-424: The 380 kV transmission network. As of 2011, there was a traction current inverter with a transmission rate of 140 MW under construction. It uses GTOs manufactured by ABB . Dimensions of the outer concrete building of the double- containment are height of around 54,5 m and diameter of around 67 m. In order to avoid overheating of the river Neckar , both blocks have cooling towers . These are not built in

3567-572: The Brussels supplementary convention, and the Vienna Convention on Civil Liability for Nuclear Damage . However states with a majority of the world's nuclear power stations, including the U.S., Russia, China and Japan, are not party to international nuclear liability conventions. The nuclear power debate about the deployment and use of nuclear fission reactors to generate electricity from nuclear fuel for civilian purposes peaked during

Neckarwestheim Nuclear Power Plant - Misplaced Pages Continue

3654-535: The CEO is also the president, is the vice president (VP). An organization may have more than one vice president, each tasked with a different area of responsibility (e.g., VP of finance, VP of human resources). Examples of subordinate executive officers who typically report to the CEO include the chief operating officer (COO), chief financial officer (CFO), chief strategy officer (CSO), chief marketing officer (CMO) and chief business officer (CBO). The public relations -focused position of chief reputation officer

3741-470: The II and the 380 kV-machine transformer of the motor-generator sets. The GKN station has a 16.7 Hz traction current converter plant . It is close to the switchgear of block II, has two identical sets, consisting of a three-phase 50 Hz AC motor with 12 poles and a four pole single phase 16.7 Hz AC synchronous generator. The rated voltage of the three-phase AC asynchronous machine and

3828-528: The UK, chief executive and chief executive officer are used in local government , where their position in law is described as the "head of paid service", and in business and in the charitable sector . As of 2013 , the use of the term director for senior charity staff is deprecated to avoid confusion with the legal duties and responsibilities associated with being a charity director or trustee, which are normally non-executive (unpaid) roles. The term managing director

3915-422: The arena of manufacturing, are produced by uniquely talented individuals, especially the "heroic CEO". In effect, journalists celebrate a CEO who takes distinctive strategic actions. The model is the celebrity in entertainment, sports, and politics – compare the " great man theory ". Guthey et al. argues that "...these individuals are not self-made, but rather are created by a process of widespread media exposure to

4002-617: The case of a partnership , an executive officer is a managing partner, senior partner, or administrative partner. In the case of a limited liability company , an executive officer is any member, manager, or officer. Depending on the organization, a CEO may have several subordinate executives to help run the day-to-day administration of the company, each of whom has specific functional responsibilities referred to as senior executives, executive officers or corporate officers. Subordinate executives are given different titles in different organizations, but one common category of subordinate executive, if

4089-557: The chief viable alternative of fossil fuel. Proponents also believe that nuclear power is the only viable course to achieve energy independence for most Western countries. They emphasize that the risks of storing waste are small and can be further reduced by using the latest technology in newer reactors, and the operational safety record in the Western world is excellent when compared to the other major kinds of power plants. Opponents say that nuclear power poses many threats to people and

4176-493: The costs of fuel extraction, processing, use and spent fuel storage internalized costs. Therefore, comparison with other power generation methods is strongly dependent on assumptions about construction timescales and capital financing for nuclear stations. Cost estimates take into account station decommissioning and nuclear waste storage or recycling costs in the United States due to the Price Anderson Act . With

4263-450: The day-to-day business and one supervisory board for control purposes (selected by the shareholders). In these countries, the CEO presides over the executive board and the chairperson presides over the supervisory board, and these two roles will always be held by different people. This ensures a distinction between management by the executive board and governance by the supervisory board. This allows for clear lines of authority. The aim

4350-424: The destruction of a turbine in operation from flying towards the reactor. In the case of a pressurized water reactor, the steam turbine is separated from the nuclear system. To detect a leak in the steam generator and thus the passage of radioactive water at an early stage, an activity meter is mounted to track the outlet steam of the steam generator. In contrast, boiling water reactors pass radioactive water through

4437-458: The dismantling of other power stations is the presence of radioactive material that requires special precautions to remove and safely relocate to a waste repository. Decommissioning involves many administrative and technical actions. It includes all clean-up of radioactivity and progressive demolition of the station. Once a facility is decommissioned, there should no longer be any danger of a radioactive accident or to any persons visiting it. After

SECTION 50

#1732802201021

4524-534: The energy-intensive stages of the nuclear fuel chain are considered, from uranium mining to nuclear decommissioning , nuclear power is not a low-carbon electricity source despite the possibility of refinement and long-term storage being powered by a nuclear facility. Those countries that do not contain uranium mines cannot achieve energy independence through existing nuclear power technologies. Actual construction costs often exceed estimates, and spent fuel management costs are difficult to define. On 1 August 2020,

4611-474: The entrance to the controversial Neckarwestheim Nuclear Plant with an 8-metre wall. Their protest coincided with the annual meeting of the company that runs the plant, Energie Baden-Württemberg (EnBW). On April 23rd 2014, the power plant featured on an episode of The Technical Difficulties in the game 'Citation Needed' presented by Tom Scott , Gary Brannan, Matt Gray, and Chris Joel. Nuclear power plant A nuclear power plant ( NPP ), also known as

4698-402: The environment and raising the possibility of nuclear proliferation." Nuclear power plants do not produce greenhouse gases during operation. Older nuclear power plants, like ones using second-generation reactors , produce approximately the same amount of carbon dioxide during the whole life cycle of nuclear power plants for an average of about 11g/kWh, as much power generated by wind , which

4785-775: The environment, and that costs do not justify benefits. Threats include health risks and environmental damage from uranium mining , processing and transport, the risk of nuclear weapons proliferation or sabotage, and the problem of radioactive nuclear waste . Another environmental issue is discharge of hot water into the sea. The hot water modifies the environmental conditions for marine flora and fauna. They also contend that reactors themselves are enormously complex machines where many things can and do go wrong, and there have been many serious nuclear accidents . Critics do not believe that these risks can be reduced through new technology , despite rapid advancements in containment procedures and storage methods. Opponents argue that when all

4872-411: The environment. In addition, many reactors are equipped with a dome of concrete to protect the reactor against both internal casualties and external impacts. The purpose of the steam turbine is to convert the heat contained in steam into mechanical energy. The engine house with the steam turbine is usually structurally separated from the main reactor building. It is aligned so as to prevent debris from

4959-506: The executive officers are usually the top officers of a corporation, the chief executive officer (CEO) being the best-known type. The definition varies; for instance, the California Corporate Disclosure Act defines "executive officers" as the five most highly compensated officers not also sitting on the board of directors. In the case of a sole proprietorship , an executive officer is the sole proprietor. In

5046-562: The existence of old boy networks , tradition, and the lack of female role models in that regard. Some countries have passed laws mandating boardroom gender quotas. In 2023 Rockefeller Foundation awarded a grant to Korn Ferry to research strategies and then action a plan to help more women to become CEO's. There are contentious claims that a significant number of CEO's have psychopathic tendencies, often characterized by power-seeking behavior and dominance. These individuals can often conceal their ruthlessness and antisocial behavior behind

5133-525: The expected growth of nuclear power from 2005 to 2055, at least four serious nuclear accidents would be expected in that period. The MIT study does not take into account improvements in safety since 1970. Nuclear power works under an insurance framework that limits or structures accident liabilities in accordance with the Paris Convention on Third Party Liability in the Field of Nuclear Energy ,

5220-451: The highest cross beam two ground conductors are installed. It is notable that the traction current circuits were insulated for 220 kV, although they are operated only with 110 kV. This measure was taken because, in case of a disturbance of the parallel 380 kV-line, overvoltages can occur which insulation designed for 110 kV cannot stand. The traction current lines from the GKN to

5307-406: The hot coolant is used as a heat source for a boiler, and the pressurized steam from that drives one or more steam turbine driven electrical generators . In the event of an emergency, safety valves can be used to prevent pipes from bursting or the reactor from exploding. The valves are designed so that they can derive all of the supplied flow rates with little increase in pressure. In the case of

SECTION 60

#1732802201021

5394-426: The hours over which the fixed cost of construction can be amortized. Nuclear power plants have a carbon footprint comparable to that of renewable energy such as solar farms and wind farms , and much lower than fossil fuels such as natural gas and coal . Nuclear power plants are among the safest modes of electricity generation, comparable to solar and wind power plants. The first time that heat from

5481-607: The need to spend more on redundant back up safety equipment. According to the World Nuclear Association , as of March 2020: The Russian state nuclear company Rosatom is the largest player in international nuclear power market, building nuclear plants around the world. Whereas Russian oil and gas were subject to international sanctions after the Russian full-scale invasion of Ukraine in February 2022, Rosatom

5568-483: The now decommissioned German Biblis Nuclear Power Plant was designed to modulate its output 15% per minute between 40% and 100% of its nominal power. Russia has led in the practical development of floating nuclear power stations , which can be transported to the desired location and occasionally relocated or moved for easier decommissioning. In 2022, the United States Department of Energy funded

5655-409: The point that their actions, personalities, and even private lives function symbolically to represent significant dynamics and tensions prevalent in the contemporary business atmosphere". Journalism thereby exaggerates the importance of the CEO and tends to neglect harder-to-describe broader corporate factors. There is little attention to the intricately organized technical bureaucracy that actually does

5742-474: The prospect that all spent nuclear fuel could potentially be recycled by using future reactors, generation IV reactors are being designed to completely close the nuclear fuel cycle . However, up to now, there has not been any actual bulk recycling of waste from a NPP, and on-site temporary storage is still being used at almost all plant sites due to construction problems for deep geological repositories . Only Finland has stable repository plans, therefore from

5829-427: The reactor by the condensate and feedwater pumps. In the main condenser, the wet vapor turbine exhaust come into contact with thousands of tubes that have much colder water flowing through them on the other side. The cooling water typically come from a natural body of water such as a river or lake. Palo Verde Nuclear Generating Station , located in the desert about 97 kilometres (60 mi) west of Phoenix, Arizona,

5916-540: The risks of future uncertainties. To date all operating nuclear power stations were developed by state-owned or regulated utilities where many of the risks associated with construction costs, operating performance, fuel price, and other factors were borne by consumers rather than suppliers. Many countries have now liberalized the electricity market where these risks and the risk of cheaper competitors emerging before capital costs are recovered, are borne by station suppliers and operators rather than consumers, which leads to

6003-836: The role of the main manager of the organization and the highest-ranking officer in the C-suite . The term "chief executive officer" is attested as early as 1782, when an ordinance of the Congress of the Confederation of the United States of America used the term to refer to governors and other leaders of the executive branches of each of the Thirteen Colonies . In draft additions to the Oxford English Dictionary published online in 2011,

6090-407: The same element. Different isotopes also have different half-lives . U-238 has a longer half-life than U-235, so it takes longer to decay over time. This also means that U-238 is less radioactive than U-235. Since nuclear fission creates radioactivity, the reactor core is surrounded by a protective shield. This containment absorbs radiation and prevents radioactive material from being released into

6177-693: The steam generator and the nuclear reactor is controlled using the feedwater system. The feedwater pump has the task of taking the water from the condensate system, increasing the pressure and forcing it into either the steam generators—in the case of a pressurized water reactor — or directly into the reactor, for boiling water reactors . Continuous power supply to the plant is critical to ensure safe operation. Most nuclear stations require at least two distinct sources of offsite power for redundancy. These are usually provided by multiple transformers that are sufficiently separated and can receive power from multiple transmission lines. In addition, in some nuclear stations,

6264-487: The steam turbine, so the turbine is kept as part of the radiologically controlled area of the nuclear power station. The electric generator converts mechanical power supplied by the turbine into electrical power. Low-pole AC synchronous generators of high rated power are used. A cooling system removes heat from the reactor core and transports it to another area of the station, where the thermal energy can be harnessed to produce electricity or to do other useful work. Typically

6351-518: The switchgear of the coal-fired power station at Walheim also runs to the GKN. This line is not for export of the power produced by the GKN, but for start-up power for the nuclear plant. Neckarwestheim and the GKN have never had a track connection to the railway network . Geologist Hermann Behmel was a prominent opponent of the Neckarwestheim Nuclear Power Plant. In April 2009, anti-nuclear activists blocked

6438-409: The term "executive director" is used primarily in the not-for-profit sector. These terms are generally mutually exclusive and refer to distinct legal duties and responsibilities. The CEO is the highest-ranking executive in a company, making corporate decisions, managing operations, allocating resources, and serving as the main point of communication between the board of directors and the company. In

6525-473: The traction current machine is 12.5 kV. The set has a length of 17.5 meters and a maximum width of 7 meters. The nominal power rating for each set is 70 megawatts, which are the largest traction current motor-generator sets ever built. It feeds the 110 kV balanced line traction power network through appropriate transformers. Power can be transferred from the Block II nuclear generator over

6612-537: The traction current switching station at Neckarwestheim, and from there to the central substation in Stuttgart Zazenhausen, are implemented as four-bundle conductors. The three-phase 380 kV circuit leading away from the nuclear power station GKN 2 runs past the 220 kV-three phase switchyard at Neckarwestheim to the transformer station at Großgartach near Heilbronn . another 110 kV-line for three phase AC with one circuit which originates in

6699-477: The turbine generator can power the station's loads while the station is online, without requiring external power. This is achieved via station service transformers which tap power from the generator output before they reach the step-up transformer. Nuclear power plants generate approximately 10% of global electricity, sourced from around 440 reactors worldwide. They are recognized as a significant provider of low-carbon electricity , accounting for about one-quarter of

6786-482: The unique shape seen in pictures. In 1977, Unit I had the second most serious incident of a nuclear power plant in the German Federal Republic to that date. Numerous errors of a new crew led to damage of the secondary cycle and, at the same time, a defect of a valve led to an automatic reactor shutdown. On 27 July 2004, slightly radioactively contaminated water with two mega becquerels activity

6873-438: The usual way. Block I uses two rows of cell cooling towers. Each row has a length of 186.8 meters and a height of 18 meters. Block II uses a hybrid cooling tower with a height of 51.22 meters. It was originally going to use a wet cooling tower, but later it was decided to use dry cooling towers because it would have less effect on the environment though more expensive. This unique type of cooling tower causes

6960-457: The work. Hubris sets in when the CEO internalizes the celebrity and becomes excessively self-confident in making complex decisions. There may be an emphasis on the sort of decisions that attract the celebrity journalists . Research published in 2009 by Ulrike Malmendier and Geoffrey Tate indicates that "firms with award-winning CEOs subsequently underperform, in terms both of stock and of operating performance". Executive compensation has been

7047-802: The workplace. This perspective is explored in the book Snakes in Suits , co-authored by Robert D. Hare . However, Scott Lilienfeld has argued that the attention given to psychopathy in the workplace by both the media and scholars has far exceeded the available scientific evidence. Emilia Bunea, writing in Psychology Today , has linked psychopathic traits in managers to workplace bullying , employee dissatisfaction, and turnover intentions. Despite this, Bunea cautions that excessive worry about supposed psychopathic managers could discourage individuals from pursuing careers in corporations and deter employees from addressing issues with difficult bosses. In

7134-459: The world's supply in this category. As of 2020, nuclear power stood as the second-largest source of low-carbon energy, making up 26% of the total. Nuclear power facilities are active in 32 countries or regions, and their influence extends beyond these nations through regional transmission grids, especially in Europe. In 2022, nuclear power plants generated 2545 terawatt-hours (TWh) of electricity,

7221-402: The world, and 57 nuclear power reactors under construction. Building a nuclear power plant often spans five to ten years, which can accrue significant financial costs, depending on how the initial investments are financed. Because of this high construction cost and lower operations, maintenance, and fuel costs, nuclear plants are usually used for base load generation, because this maximizes

7308-403: 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

7395-526: Was discharged from Unit II into the Neckar river. As a result, for the first time in the Federal Republic, the operator company of a nuclear power plant paid a fine of €25,000 and a managing director was dismissed. Power produced at GKN is transmitted over a transmission line carrying two circuits of traction current and three-phase alternating current line to the 220 kV-three phase AC and

7482-477: Was not targeted by sanctions. However, some countries, especially in Europe, scaled back or cancelled planned nuclear power plants that were to be built by Rosatom. Modern nuclear reactor designs have had numerous safety improvements since the first-generation nuclear reactors. A nuclear power plant cannot explode like a nuclear weapon because the fuel for uranium reactors is not enriched enough, and nuclear weapons require precision explosives to force fuel into

7569-468: 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 which produced traction current. Block I was shut down on 17 March 2011, for a three-month moratorium on nuclear power, an announcement on 30 May 2011 named block I as a unit that would not be returning to service for political reasons. Block 2, in service since 1988, has

#20979