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  2. Supercritical water reactor - Wikipedia

    en.wikipedia.org/wiki/Supercritical_water_reactor

    The SCWR operates at supercritical pressure. The reactor outlet coolant is supercritical water.Light water is used as a neutron moderator and coolant. Above the critical point, steam and liquid become the same density and are indistinguishable, eliminating the need for pressurizers and steam generators (), or jet/recirculation pumps, steam separators and dryers ().

  3. Spent fuel pool - Wikipedia

    en.wikipedia.org/wiki/Spent_fuel_pool

    Pumps circulate water from the spent fuel pool to heat exchangers, then back to the spent fuel pool. The water temperature in normal operating conditions is held below 50 °C (120 °F). [ 8 ] Radiolysis , the dissociation of molecules by radiation, is of particular concern in wet storage, as water may be split by residual radiation and hydrogen ...

  4. Magnox - Wikipedia

    en.wikipedia.org/wiki/Magnox

    The fact that fuel elements can only be stored for a limited period in water before the magnox cladding deteriorates, and must therefore inevitably be reprocessed, added to the costs of the magnox programme. [16]

  5. Nuclear reactor safety system - Wikipedia

    en.wikipedia.org/wiki/Nuclear_reactor_safety_system

    An LPCI is an emergency system which consists of a pump that injects a coolant into the reactor vessel once it has been depressurized. In some nuclear power plants an LPCI is a mode of operation of a residual heat removal system, also known as an RHR or RHS but is generally called LPCI. It is also not a stand-alone valve or system.

  6. Light-water reactor - Wikipedia

    en.wikipedia.org/wiki/Light-water_reactor

    The zirconium alloy tubes are about 1 cm in diameter, and the fuel cladding gap is filled with helium gas to improve the conduction of heat from the fuel to the cladding. There are about 179-264 fuel rods per fuel bundle and about 121 to 193 fuel bundles are loaded into a reactor core. Generally, the fuel bundles consist of fuel rods bundled ...

  7. Economics of nuclear power plants - Wikipedia

    en.wikipedia.org/wiki/Economics_of_nuclear_power...

    In 2014, the US Energy Information Administration estimated that for new nuclear plants going online in 2019, capital costs will make up 74% of the levelized cost of electricity; higher than the capital percentages for fossil-fuel power plants (63% for coal, 22% for natural gas), and lower than the capital percentages for some other nonfossil ...

  8. Integral fast reactor - Wikipedia

    en.wikipedia.org/wiki/Integral_fast_reactor

    The fuel is contained in steel cladding with liquid sodium filling in the space between the fuel and the cladding. A void above the fuel allows helium and radioactive xenon to be collected safely [citation needed] without significantly increasing pressure inside the fuel element, [citation needed] and also allows the fuel to expand without ...

  9. Lead-cooled fast reactor - Wikipedia

    en.wikipedia.org/wiki/Lead-cooled_fast_reactor

    However, a number of proposed and one in construction new nuclear reactor designs are lead-cooled. Fuel designs being explored for this reactor scheme include fertile uranium as a metal, metal oxide or metal nitride. [2] The lead-cooled reactor design has been proposed as a generation IV reactor. Plans for future implementation of this type of ...