High-level radioactive waste (HLW)

High-level radioactive waste (HLW) is the most dangerous type of nuclear waste, mainly produced from nuclear reactors and atomic weapons. It contains highly radioactive materials that can remain hazardous for thousands of years. HLW generates significant heat and requires careful management to prevent environmental contamination and protect human health. It is typically stored in specially designed containers at nuclear facilities or in designated repositories, with long-term disposal options still under development. Proper handling, secure storage, and monitoring are essential to ensure safety due to its long-lasting radioactivity.