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  2. Nuclear reactor safety system - Wikipedia

    en.wikipedia.org/wiki/Nuclear_reactor_safety_system

    The fuel cladding is the first layer of protection around the nuclear fuel and is designed to protect the fuel from corrosion that would spread fuel material throughout the reactor coolant circuit. In most reactors it takes the form of a sealed metallic or ceramic layer.

  3. Fuel element failure - Wikipedia

    en.wikipedia.org/wiki/Fuel_element_failure

    A fuel element failure is a rupture in a nuclear reactor's fuel cladding that allows the nuclear fuel or fission products, either in the form of dissolved radioisotopes or hot particles, to enter the reactor coolant or storage water. [1] The de facto standard nuclear fuel is uranium dioxide or a mixed uranium/plutonium dioxide.

  4. Nuclear fuel - Wikipedia

    en.wikipedia.org/wiki/Nuclear_fuel

    Cladding is the outer layer of the fuel rods, standing between the coolant and the nuclear fuel. It is made of a corrosion-resistant material with low absorption cross section for thermal neutrons, usually Zircaloy or steel in modern constructions, or magnesium with small amount of aluminium and other metals for the now-obsolete Magnox reactors ...

  5. Swimming pool reactor - Wikipedia

    en.wikipedia.org/wiki/Swimming_pool_reactor

    The control room of NC State's Pulstar Nuclear Reactor. A swimming pool reactor, [1] also called an open pool reactor, is a type of nuclear reactor that has a core (consisting of the fuel elements and the control rods) immersed in an open pool usually of water. [2] The water acts as neutron moderator, cooling agent and radiation shield. The ...

  6. Containment building - Wikipedia

    en.wikipedia.org/wiki/Containment_building

    [citation needed] 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. [2]

  7. Loss-of-coolant accident - Wikipedia

    en.wikipedia.org/wiki/Loss-of-coolant_accident

    The time required for the fuel to melt. After the water has boiled, then the time required for the fuel to reach its melting point will be dictated by the heat input due to decay of fission products, the heat capacity of the fuel and the melting point of the fuel. The time required for the molten fuel to breach the primary pressure boundary.

  8. Spent nuclear fuel - Wikipedia

    en.wikipedia.org/wiki/Spent_nuclear_fuel

    Spent nuclear fuel, occasionally called used nuclear fuel, is nuclear fuel that has been irradiated in a nuclear reactor (usually at a nuclear power plant). It is no longer useful in sustaining a nuclear reaction in an ordinary thermal reactor and, depending on its point along the nuclear fuel cycle , it will have different isotopic ...

  9. Organic nuclear reactor - Wikipedia

    en.wikipedia.org/wiki/Organic_nuclear_reactor

    An organic nuclear reactor, or organic cooled reactor (OCR), is a type of nuclear reactor that uses some form of organic fluid, typically a hydrocarbon substance like polychlorinated biphenyl (PCB), for cooling and sometimes as a neutron moderator as well. Using an organic fluid had a major advantage over conventional designs using water as the ...

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