ABSTRACT
The two LWR concepts that have been developed are the PWR and the BWR. The PWR version was initially developed for propulsion of naval vessels. Shippingport was the first commercial application of this LWR concept. The success of that project and of several demonstration and experimental PWRs and BWRs in the 1950s and 1960s, and the more than 30 years of experience accumulated with currently operating BWRs and PWRs have made the LWR the most popular commercial nuclear reactor in the world.
