Overview of the Generic TRUEX Model validation studies using data from TRUEX demonstrations from the Power Reactor and Nuclear Fuel Development Corp. of Japan

摘要

The Generic TRUEX Model (GTM) was recently validated with data from three demonstrations of the TRUEX process. These demonstrations were run by researchers from the Power Reactor and Nuclear Fuel Development Corp. of Japan (PNC) at the Tokai Works. The feed for the PNC runs was the highly active raffinate from reprocessing of spent fuel from fast breeder reactors. The GTM is designed to calculate TRUEX solvent extraction flowsheets based on input of a specific feed and a specific set of process goals and constraints. This model was used to predict concentration profiles for the three flowsheet demonstrations of the TRUEX process run by PNC. A 19-stage mixer settler was used for the extraction and scrub sections, and a 16- to 19-stage unit for stripping. Stagewise data were collected on the behavior of nitric acid and several fission products and actinides during these runs. Results of the GTM calculations showed good agreement with the actual data published by PNC researchers. Differences between model predictions and experimental data are discussed in terms of the process chemistry and demonstration conditions.