Which term refers to atoms in the fuel splitting to release large quantities of radiation and energy, heating water to make steam?

• A. Plant components
• B. Nuclear fuel
• C. Activated Corrosion Products
• D. Reactor Operations

Answer: (B)

Nuclear fission in the fuel is the process that releases energy and heat used to turn water into steam. In a reactor, the atoms inside the nuclear fuel—fissile ones like uranium-235—split when struck by neutrons. Each fission releases a large amount of energy as heat and also releases more neutrons to continue the chain reaction, while producing radiation. The term that names the material where this splitting occurs is nuclear fuel. So the fuel is the substance undergoing fission, providing the heat source that turns water into steam to drive the turbine. The other options describe plant components, byproducts, or operations, not the material hosting the fission process.