The Most Used Nuclear Reactors: PWR and BWR

During the development of nuclear technologies, various types and designs of nuclear reactors were created, differing primarily in the moderator and coolant used. The types that used ordinary water for these purposes — the pressurized water reactor known as PWR and the boiling water reactor, known as BWR — eventually achieved the widest use. Their names already sufficiently describe the main difference between them. A pressurized water reactor uses water under high pressure, circulating only within the primary circuit to remove heat from the core, whereas in a boiling reactor, heated water is boiled at a lower pressure and the resulting steam is brought directly into the turbine.

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0:00 The Most Used Nuclear Reactors: PWR and BWR
0:39 Pressurized Water Reactor
0:46 Boiling Water Reactor
1:00 History
1:21 PWR - How it Works
1:48 Pressure Vessel
2:16 Fuel and Fuel Assembly
2:33 Reactor Core
2:50 Coolant and Moderator
3:31 Containment
4:16 Boiling Water Reactor
5:51 Fuel and Fuel Assembly
6:25 Coolant and Moderator
7:10 Containment