مفاعل نووي
Nuclear reactor is a system that controls and contains the sustained nuclear chain reaction. It is usually used for generating electricity, but can also be used for conducting research and producing medical isotopes. Nuclear reactors have been one of the most concerning systems for public safety worldwide because the malfunction of a nuclear reactor can cause a serious disaster. Controlling the nuclear reactor system is accomplished by stopping, decreasing, or increasing the chain reaction inside the nuclear reactor. Varying the water level in the vertical cylinder and moving adjuster rods are the methods of controlling the chain reaction when the reactor is operating. Temperatures, reactor power levels, and pressure are constantly monitored by the sensitive detectors.