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This animation explains nuclear power plants in detail and how they work.

Contents
1) Important buildings (e.g. cooling tower, containment building)
2) Structure of the reactor vessel (pressurized water reactor)
3) Fuel assemblies, fuel rods and fuel pellets
4) Heat production through nuclear fission
5) Heat exchanger (steam generator)
6) Steam turbines
7) Production of electricity through the generator
8) Condenser
9) Primary and secondary circuits