Light water reactor (LWR)

A Light Water Reactor (LWR) is a type of nuclear power plant that uses ordinary water as both a coolant and a neutron moderator to produce electricity. It works by splitting atoms of uranium fuel, releasing heat that turns water into steam. This steam then drives turbines connected to generators, producing electricity. LWRs are the most common nuclear reactors worldwide because they are well-understood, safe, and efficient. They use ordinary water—light water—rather than heavy water, and their design includes multiple safety systems to prevent accidents.