Pressurized Heavy Water Reactor (PHWR)

A Pressurized Heavy Water Reactor (PHWR) is a type of nuclear power plant that uses heavy water (water with deuterium instead of regular hydrogen) as a coolant and moderator. It generates electricity by splitting uranium atoms through nuclear fission, releasing heat that produces steam to drive turbines. Heavy water allows the reactor to use natural, unenriched uranium, making it more economical in some contexts. The reactor operates under high pressure to keep water from boiling, ensuring efficient heat transfer. PHWRs are known for safety, fuel efficiency, and the ability to refuel without shutting down completely.