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Very-high-temperature reactor

Index Very-high-temperature reactor

The very-high-temperature reactor (VHTR), or high-temperature gas-cooled reactor (HTGR), is a Generation IV reactor concept that uses a graphite-moderated nuclear reactor with a once-through uranium fuel cycle. [1]

61 relations: Annulus (mathematics), Argonne National Laboratory, AVR reactor, CAREM, Chromium, Control rod, Coolant, Corrosion, Creep (deformation), Dragon reactor, Ductility, Fort St. Vrain Generating Station, Generation IV reactor, Germany, Graphite, High-temperature engineering test reactor, HTR-10, HTR-PM, Hydrogen, Inert gas, International Atomic Energy Agency, International Framework for Nuclear Energy Cooperation, List of nuclear reactors, Molten salt reactor, Neutron, Neutron capture, Neutron moderator, Neutron reflector, Next Generation Nuclear Plant, Nuclear and radiation accidents and incidents, Nuclear fission product, Nuclear fuel, Nuclear physics, Nuclear reactor, Nuclear reactor core, Nuclear reactor physics, Oak Ridge National Laboratory, Oak Ridge, Tennessee, Office of Nuclear Energy, Passive nuclear safety, Peach Bottom Nuclear Generating Station, Pebble bed modular reactor, Pebble-bed reactor, Pressure vessel, Refractory metals, Rudolf Schulten, Silicon carbide, Spire, Stress (mechanics), Sulfur–iodine cycle, ..., Superalloy, Tennessee, THTR-300, Time-dependent neutronics and temperatures, UHTREX, Ultimate tensile strength, United States Department of Energy national laboratories, Uranium, Uranium carbide, Uranium dioxide, Volumetric heat capacity. Expand index (11 more) »

Annulus (mathematics)

In mathematics, an annulus (the Latin word for "little ring" is anulus/annulus, with plural anuli/annuli) is a ring-shaped object, a region bounded by two concentric circles.

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Argonne National Laboratory

Argonne National Laboratory is a science and engineering research national laboratory operated by the University of Chicago Argonne LLC for the United States Department of Energy located near Lemont, Illinois, outside Chicago.

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AVR reactor

The AVR reactor (Arbeitsgemeinschaft Versuchsreaktor) was a prototype pebble bed reactor, located immediately adjacent to Jülich Research Centre in West Germany, constructed in 1960, grid connected in 1967 and shut down in 1988.

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CAREM

CAREM (Central Argentina de Elementos Modulares) is a small modular reactor for electrical power generation currently under construction near the city of Zárate, in the northern part of Buenos Aires province beside the Atucha I Nuclear Power Plant.

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Chromium

Chromium is a chemical element with symbol Cr and atomic number 24.

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Control rod

Control rods are used in nuclear reactors to control the fission rate of uranium and plutonium.

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Coolant

A coolant is a substance, typically liquid or gas, that is used to reduce or regulate the temperature of a system.

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Corrosion

Corrosion is a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide.

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Creep (deformation)

In materials science, creep (sometimes called cold flow) is the tendency of a solid material to move slowly or deform permanently under the influence of mechanical stresses.

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Dragon reactor

Dragon was an experimental high temperature gas-cooled reactor at Winfrith in Dorset, England, operated by the United Kingdom Atomic Energy Authority.

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Ductility

Ductility is a measure of a material's ability to undergo significant plastic deformation before rupture, which may be expressed as percent elongation or percent area reduction from a tensile test.

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Fort St. Vrain Generating Station

Fort Saint Vrain Generating Station is a natural gas powered electricity generating facility located near the town of Platteville in northern Colorado in the United States.

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Generation IV reactor

Generation IV reactors (Gen IV) are a set of nuclear reactor designs currently being researched for commercial applications by the Generation IV International Forum, with Technology readiness levels varying between the level requiring a demonstration, to economical competitive implementation.

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Germany

Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.

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Graphite

Graphite, archaically referred to as plumbago, is a crystalline allotrope of carbon, a semimetal, a native element mineral, and a form of coal.

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High-temperature engineering test reactor

The high-temperature test reactor (HTTR) is a graphite-moderated gas-cooled research reactor in Oarai, Ibaraki, Japan operated by the Japan Atomic Energy Agency.

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HTR-10

HTR-10 is a 10 MWt prototype pebble bed reactor at Tsinghua University in China.

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HTR-PM

The HTR-PM is a small modular nuclear reactor under development in China.

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Hydrogen

Hydrogen is a chemical element with symbol H and atomic number 1.

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Inert gas

An inert gas/noble gas is a gas which does not undergo chemical reactions under a set of given conditions.

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International Atomic Energy Agency

The International Atomic Energy Agency (IAEA) is an international organization that seeks to promote the peaceful use of nuclear energy, and to inhibit its use for any military purpose, including nuclear weapons.

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International Framework for Nuclear Energy Cooperation

The International Framework for Nuclear Energy Cooperation (IFNEC) formerly the Global Nuclear Energy Partnership (GNEP) began as a U.S. proposal, announced by United States Secretary of Energy Samuel Bodman on February 6, 2006, to form an international partnership to promote the use of nuclear power and close the nuclear fuel cycle in a way that reduces nuclear waste and the risk of nuclear proliferation.

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List of nuclear reactors

This is a list of all the commercial nuclear reactors in the world, sorted by country, with operational status.

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Molten salt reactor

A molten salt reactor (MSR) is a class of generation IV nuclear fission reactor in which the primary nuclear reactor coolant, or even the fuel itself, is a molten salt mixture.

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Neutron

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Neutron capture

Neutron capture is a nuclear reaction in which an atomic nucleus and one or more neutrons collide and merge to form a heavier nucleus.

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Neutron moderator

In nuclear engineering, a neutron moderator is a medium that reduces the speed of fast neutrons, thereby turning them into thermal neutrons capable of sustaining a nuclear chain reaction involving uranium-235 or a similar fissile nuclide.

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Neutron reflector

A neutron reflector is any material that reflects neutrons.

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Next Generation Nuclear Plant

A Next Generation Nuclear Plant (NGNP) is a generation IV very-high-temperature reactor (VHTR) that could be coupled to a neighboring hydrogen production facility.

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Nuclear and radiation accidents and incidents

A nuclear and radiation accident is defined by the International Atomic Energy Agency (IAEA) as "an event that has led to significant consequences to people, the environment or the facility." Examples include lethal effects to individuals, radioactive isotope to the environment, or reactor core melt." The prime example of a "major nuclear accident" is one in which a reactor core is damaged and significant amounts of radioactive isotopes are released, such as in the Chernobyl disaster in 1986.

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Nuclear fission product

Nuclear fission products are the atomic fragments left after a large atomic nucleus undergoes nuclear fission.

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Nuclear fuel

Nuclear fuel is a substance that is used in nuclear power stations to produce heat to power turbines.

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Nuclear physics

Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions.

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Nuclear reactor

A nuclear reactor, formerly known as an atomic pile, is a device used to initiate and control a self-sustained nuclear chain reaction.

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Nuclear reactor core

A nuclear reactor core is the portion of a nuclear reactor containing the nuclear fuel components where the nuclear reactions take place and the heat is generated.

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Nuclear reactor physics

Nuclear reactor physics is the branch of science that deals with the study and application of chain reaction to induce a controlled rate of fission in a nuclear reactor for the production of energy.

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Oak Ridge National Laboratory

Oak Ridge National Laboratory (ORNL) is an American multiprogram science and technology national laboratory sponsored by the U.S. Department of Energy (DOE) and administered, managed, and operated by UT-Battelle as a federally funded research and development center (FFRDC) under a contract with the DOE.

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Oak Ridge, Tennessee

Oak Ridge is a city in Anderson and Roane counties in the eastern part of the U.S. state of Tennessee, about west of Knoxville.

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Office of Nuclear Energy

The Office of Nuclear Energy (NE) is an agency of the United States Department of Energy which promotes nuclear power as a resource capable of meeting the United States' energy, environmental, and national security needs by resolving technical and regulatory barriers through research, development, and demonstration.

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Passive nuclear safety

Passive nuclear safety is a safety feature of a nuclear reactor that does not require operator actions or electronic feedback in order to shut down safely in the event of a particular type of emergency (usually overheating resulting from a loss of coolant or loss of coolant flow).

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Peach Bottom Nuclear Generating Station

Peach Bottom Atomic Power Station, a nuclear power plant, is located southeast of Harrisburg in Peach Bottom Township, York County, Pennsylvania, on the Susquehanna River three miles north of the Maryland border.

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Pebble bed modular reactor

The Pebble Bed Modular Reactor (PBMR) is a particular design of pebble bed reactor under development by South African company PBMR (Pty) Ltd since 1994.

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Pebble-bed reactor

The pebble-bed reactor (PBR) is a design for a graphite-moderated, gas-cooled nuclear reactor.

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Pressure vessel

A pressure vessel is a container designed to hold gases or liquids at a pressure substantially different from the ambient pressure.

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Refractory metals

Refractory metals are a class of metals that are extraordinarily resistant to heat and wear.

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Rudolf Schulten

Rudolf Schulten (16 August 1923 – 27 April 1996)—professor at RWTH Aachen University—was the main developer of the pebble bed reactor design, which was originally invented by Farrington Daniels.

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Silicon carbide

Silicon carbide (SiC), also known as carborundum, is a semiconductor containing silicon and carbon.

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Spire

A spire is a tapering conical or pyramidal structure on the top of a building, often a skyscraper or a church tower, similar to a steep tented roof.

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Stress (mechanics)

In continuum mechanics, stress is a physical quantity that expresses the internal forces that neighboring particles of a continuous material exert on each other, while strain is the measure of the deformation of the material.

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Sulfur–iodine cycle

The sulfur–iodine cycle (S–I cycle) is a three-step thermochemical cycle used to produce hydrogen.

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Superalloy

A superalloy, or high-performance alloy, is an alloy that exhibits several key characteristics: excellent mechanical strength, resistance to thermal creep deformation, good surface stability, and resistance to corrosion or oxidation.

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Tennessee

Tennessee (translit) is a state located in the southeastern region of the United States.

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THTR-300

The THTR-300 was a thorium high-temperature nuclear reactor rated at 300 MW electric (THTR-300) in Hamm-Uentrop, Germany.

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Time-dependent neutronics and temperatures

TIme-dependent neutronics and temperatures (TINTE) is a two-group diffusion code for the study of nuclear and thermal behavior of high temperature reactors.

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UHTREX

The Ultra-High Temperature Reactor Experiment (UHTREX) was an experimental gas-cooled nuclear reactor run at Los Alamos Scientific Laboratory between 1959 and 1971 from Los Alamos Science Winter/Spring 1983 (Los Alamos National Laboratory).

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Ultimate tensile strength

Ultimate tensile strength (UTS), often shortened to tensile strength (TS), ultimate strength, or Ftu within equations, is the capacity of a material or structure to withstand loads tending to elongate, as opposed to compressive strength, which withstands loads tending to reduce size.

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United States Department of Energy national laboratories

The United States Department of Energy National Laboratories and Technology Centers are a system of facilities and laboratories overseen by the United States Department of Energy (DOE) for the purpose of advancing science and technology to fulfill the DOE mission.

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Uranium

Uranium is a chemical element with symbol U and atomic number 92.

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Uranium carbide

Uranium carbide, a carbide of uranium, is a hard refractory ceramic material.

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Uranium dioxide

Uranium dioxide or uranium(IV) oxide (2), also known as urania or uranous oxide, is an oxide of uranium, and is a black, radioactive, crystalline powder that naturally occurs in the mineral uraninite.

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Volumetric heat capacity

Volumetric heat capacity (VHC), also termed volume-specific heat capacity, describes the ability of a given volume of a substance to store internal energy while undergoing a given temperature change, but without undergoing a phase transition.

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Redirects here:

Advanced High-Temperature Reactor, HTGR, Hard to Receive, High Temperature Gas Cooled Reactor, High temperature gas cooled reactor, High temperature gas reactor, High temperature gas-cooled reactor, High-temperature gas-cooled reactor, VHTR, VTGR, Very High Temperature Reactor, Very high temperature reactor, Very-High-Temperature Reactor.

References

[1] https://en.wikipedia.org/wiki/Very-high-temperature_reactor

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