Development of Mathematical Model for Balance Settlement of Product and Waste Flows from SNF Reprocessing

A mathematical model has been built to estimate steady-state characteristics of flows and products in SNF processing systems. A developed calculation module will enable to change not only a type of SNF to be reprocessed and relationship among the processing units (stages) while building the model, but also will provide for entering new processing stages into the model to develop new process flow-sheets, to optimize and to compare the existing ones. Optimizing calculations have been conducted on the basis of the model regarding new promising flow-sheets of reprocessing SNF from fast reactors. The selected data structure within the model will provide for modelling of not only SNF reprocessing but also of other nuclear fuel processing stages.