|Two criteria for classifying waste|
Radioactive waste is classified according to the level of activity and life – short or long – of the main elements present. There are clear groups. For example, with very low-level waste (VLLW) and high-level waste (HLW) no distinction is made between short- and long-lived waste. The management method is indicated where one has been defined (VLLW and LILW-SL). Research is being conducted into the management of the other three categories, particularly waste types B (ILW-LL) and C (HLW). Research into these two major categories, in which nearly 99% of radioactivity is concentrated, is organised in France in accordance with the Bataille Act of 30 December 1991.