[en] Kernbrennstoff-Wiederaufarbeitungs-Gesellschaft m.b.H. (KEWA) is presently engaged in drafting a conceptual design study of a reprocessing plant to be built in the Federal Republic of Germany. The study is based on a number of assumptions and data which are outlined in more detail in this contribution, but which cannot anticipate the results of the conceptual design study still under way. The design is made for oxide fuels of boiling water and pressurized water reactors. Also plutonium recycle fuel will be considered with a contribution to the amount of fuel to be reprocessed rising up to 10%. The target burnup assumed is 40,000 MWd/t, the minimum cooling time 365 days at the beginning of reprocessing. For this first large German reprocessing plant a design capacity of 1,400 t U/a will meet the criteria needed for setting the capacity. The fuel solution is separated into uranium, plutonium and fission products in three extraction cycles based on the Purex flowsheet. All safety rules and regulations presently in force are taken into account in plant design and operation. The estimated investment cost is estimated to amount to DM 2 billion for a range between 1,000 and 2,000 t/a; this sum does not include the costs of waste solidification and storage. (orig.)