Interim storage of recyclable materials

Different recyclable materials are placed in interim storage:
– the Depleted Uranium (DU) resulting from the uranium enrichment step. It contains less than 0.4 % of 235U. One of its uses is the fabrication of MOX (Mixed OXides of uranium and of plutonium) fuel;
– the Reprocessed Uranium (RepU) from the used fuel. It contains around 1 % of 235U. It can be re-enriched, and is then qualified as Enriched Reprocessed Uranium (ERU) and used in reactors.