Stratégie optimale de stockage de déchets radioactifs à vie longue sous contrainte de capacité

The paper models a program of high-activity nuclear-waste management. The physics of cooling incites to store hot waste for a while to spare scarce disposal volume: indeed, colder parcels may be put in tighter conditions. The optimal unconstrained duration of storage is characterized. Various constraints (on disposal capacity, on the length of storage, on storage capacity) are considered. They all lead to contrasted strategies depending on vintage. Codes JEL : Q49 ; L94 ; R32