Long-term safety of the storage of intermediate-level (IL) and intermediate-level long-lived waste (ILLL)

The management of high-level (HL) and intermediate-level long-lived waste (ILLL) is a major stage in the production of nuclear power. Unlike warehousing which consists in storing waste temporarily, storage is a final operation. Various processes are available according to waste radioactivity. In order to preserve the environment and ensure the safety of individuals, assessing the safety of the installation is required in addition to the storage method, notably in the long term. This article therefore presents several practices which exist in France and throughout the world. These practices are based upon input data and hypotheses (typology of waste, physico-chemical characteristics, radiological content, etc.) and allow for the implementation of long-term strategy and safety indicators.