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Abstract
A flow sheet for simplified reprocessing of long cooled light water reactor (LWR) fuel is presented. The standard Purex process is modified so that after the first solvent extraction cascade (co-decontamination), plutonium is washed out of the organic phase without reduction. This step also washes out enough uranium that the U-Pu product can be directly used as LWR fuel. A finish partitioning step, with plutonium reduction, decontaminates the remaining uranium product. Neither the U-Pu product nor the uranium product requires further purification, process yields are excellent, and plant equipment can be simplified.