Reactor technology refers to the systems and processes used to facilitate controlled nuclear reactions, primarily for energy production. These reactors harness the energy released from nuclear fission, where heavy atomic nuclei split into smaller parts, releasing a significant amount of heat. This heat is then used to produce steam, which drives turbines to generate electricity. There are various types of reactors, including pressurized water reactors and boiling water reactors, each with unique designs and safety features. Reactor technology plays a crucial role in the global energy landscape, providing a low-carbon alternative to fossil fuels and contributing to efforts to combat climate change.