Scheme of a double cascade for recycling regenerated uranium: E1 – flow of regenerated uranium; P1 – flow of selection of the first stage, power supply of the second stage; P2 – flow of selection of the second cascade (waste of purification from the 232U isotope); W1 – flow of the dump of the first stage; W2 – flow of the heavy fraction of the second cascade; FP – LEU diluent flow; P0 – final product (commercial LEU).