spent nuclear fuel (SNF)

Spent nuclear fuel (SNF) is used fuel from a nuclear reactor after it has generated energy. It contains radioactive materials and residual fission products, making it dangerous and requiring careful handling. SNF is highly radioactive and generates heat, so it’s initially stored in cooling pools or dry casks to prevent overheating. Over time, it can be processed for reuse or contained for long-term storage or disposal. Managing SNF safely is essential to protect public health and the environment, as it remains hazardous for many years due to its radioactive nature.