Advanced Fuel Cycles and Fast Reactor Flexibility

In this paper we give some practical demonstrations of the wide range of applications associated to the flexibility of Fast Reactors (FR), i.e. to breed or to burn fissile material. In the case of breeders, the requirements of sustainability can be dealt with appropriate design choices (e.g. fuel type) in order to reduce the doubling time (e.g. below 10 years). In the case of burner FRs, they can be easily adapted to the assigned mission within a specific national or regional policy, e.g. by reducing and successively stabilizing MA inventories (as shown in this paper) within waste management strategies, or by drastically reducing legacy inventories of TRU, resulting from a previous deployment of nuclear energy, both in the extreme cases of a LWR-only or FR-only power fleet deployment. (author)