Japan has a full nuclear fuel cycle set-up, including enrichment and reprocessing of used fuel for recycle.

Used nuclear fuel has long been reprocessed to extract fissile materials for recycling and to reduce the volume of high-level wastes. New reprocessing technologies are being developed to be deployed in conjunction with fast neutron reactors which will burn all long-lived actinides.
 

Reprocessing of Japanese used fuel has been undertaken in UK and France under contract with Japanese utilities. Recovered fissile materials are returned to Japan as reactor fuel, notably as mixed oxide (MOX) fuel.