#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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