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A storage and cooling facility for spent fuel assemblies removed from the reactor, typically filled with water.

Contain fissionable material which undergoes nuclear reactions to produce heat.

Reduces the speed of fast neutrons, turning them into thermal neutrons capable of sustaining the nuclear chain reaction.

The last line of defense to prevent the release of radioactive materials into the environment during an accident.

A method for storing spent nuclear fuel in large, steel and concrete containers in a safe and secure manner outside of the spent fuel pool.

Condenses the steam from the turbine exhaust back into water to be reused in the heat cycle.

Absorb neutrons and regulate the fission chain reaction in nuclear reactors.

Converts the mechanical energy from the turbine into electrical energy.

Protects personnel and the environment from harmful ionizing radiation produced during the reactor's operation.

Systems including control rods, soluble neutron poisons, and burnable poisons used to control the power output of a reactor.

Used to lift and move heavy components within the containment building, including reactor internals and fuel assemblies.

A fluid circulating through the reactor core to transfer the heat produced by fission away from the core.

Measures the neutron flux, or the intensity of neutron radiation, within the reactor core.

Converts the thermal energy from steam into mechanical energy, spinning the electric generator.

A structured collection of fuel rods designed to facilitate loading into the reactor core, sustain reaction, and allow heat removal.

Instruments that measure the amount of heat produced in nuclear reactions, particularly for spent fuel characterization.

A safety device designed to catch the molten core material (corium) in the event of a severe reactor meltdown.

Reflect neutrons back into the reactor core to reduce neutron leakage and increase the efficiency of the reaction.

Dissipates excess heat from the condenser coolant to the atmosphere.

A neutron absorber used in control rods and emergency shutdown systems.

Used as both a moderator and coolant in some reactors, it consists of a higher proportion of the isotope deuterium.

Contains the reactor core and the reactor coolant, maintaining the required pressure to prevent the coolant from boiling.

The containment structure that houses the reactor core and coolant system.

Exchanges heat from the reactor coolant to the water in a secondary loop, producing steam for power generation.

Pumps water from the condenser back into the steam generator or reactor vessel to continue the cycle.

Serves as a moderator by reducing the speed of fast neutrons in a reactor.

Remove impurities and radioactive isotopes from the reactor coolant to maintain its effectiveness and safety.

Measures temperatures within the reactor to monitor its condition and performance.

Part of the emergency cooling system that sprays water onto the reactor core to remove residual heat in the event of a loss of coolant.