Boiling water reactor

The boiling water reactors have one circuit scheme. The cooling water that passes through the reactor core is the source for the steam that drives the turbine. The fuel used in these reactors is uranium dioxide.

The fission in the uranium fuel releases heat, which is absorbed by the cooling water during its movement upstream through the core. The coolant absorbs the heat from the core and starts to boil and produces a steam-water mixture. The steam line leads the produced steam to the turbine, which drives the generator for electricity production. After the turbine, the steam cools down and condenses into water in a condenser. From the condenser the water is pumped back to the reactor.