#nuclear_reactor__reactor  (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements
  supertype:  #apparatus.equipment__apparatu__setup  equipment designed to serve a specific function
  part:  #control_rod  #core.chamber  #moderator.inhibitor
  subtype:  #atomic_pile__atomic_reactor__pile__chain_reactor__chainreactor  a nuclear reactor that uses controlled nuclear fission to generate energy
  subtype:  #breeder_reactor__breederreactor  a nuclear reactor that produces more fissile material than it burns
  subtype:  #fast_reactor  nuclear reactor in which nuclear fissions are caused by fast neutrons because little or no moderator is used
  subtype:  #gas-cooled_reactor  a nuclear reactor using gas as a coolant
  subtype:  #liquid_metal_reactor  a nuclear reactor using liquid metal as a coolant
  subtype:  #thermal_reactor__thermalreactor  a nuclear reactor in which nuclear fissions are caused by neutrons that are slowed down by a moderator
  subtype:  #thermonuclear_reactor__thermonuclearreactor__fusion_reactor  a nuclear reactor that uses controlled nuclear fusion to generate energy
  subtype:  #water-cooled_reactor  nuclear reactor using water as a coolant
     subtype:  #boiling_water_reactor__boilingwaterreactor__bwr  a nuclear reactor that uses water as a coolant and moderator; the water boils in the reactor core and the steam produced can drive a steam turbine
     subtype:  #pressurized_water_reactor__pressurizedwaterreactor__PWR  a nuclear reactor that uses water as a coolant and moderator; the steam produced can drive a steam turbine

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