Head-end reprocessing studies with irradiated HTGR-type fuels. III. Studies with RTE-7: TRISO UC$sub 2$-TRISO ThC$sub 2$

Abstract

lv 4.5.3 Release of Other Fission Products to the Of f-Gas 39 4.5.4 Distribution of Fission Products in I-eachea and Leach Residues 5.0 COMPARISONS 0? RECOVERED QUANTITIES OF MATERIALS WITH PREDICTIONS 5.1 Fuel Stick Parameters 5.2 Comparison of Quantities of Radioisotopes Found with Predicted Aaounts 6.0 REFERENCES APPENDIX. SUPPLEMENTARY INFORMATION ON RTE-7 yr UST OF FIGURES PAGE 1. Mlnlburner-Fllter Aeeeably 3 2. Off-gee Treln Ueed for BXE-7-3-8-4 (TI1SO UC 2-TB1S0 ThC 2). 5 3. Flowsheet Ueed for Fuel Stick KTE-7-3-8-4 (IR1S0 UC 2~ IEISO ThC 2) 7 4. Off-Gea Train Ueed for ETE-7-3-7-2 Burning (TUSO UC 2-IUSO ThC 2) 26 5. Flowsheet Ueed for lttB-7-3-7-2 (TE1SO UCj-TIISO ThC 2) ... 27 A-1. Isoeetric Drawing of Sectioned Recycle fee: Element (VIE).. 49 A-2. Prlanry Burn RTE-7-3-7-2 50 A-3. Secondary Burn, Ground Fleelle Particles, HE-7-3-7-2 .... 51 A-4. Secondary Burn, Ground Fertile Partlclee, BXE-7-3-7-2 ... 52 vl LIST OF TABLES PACE 1. Uraalun-thoriua distributions for IXE-7-3-8-4 head-end reprocesslng tents 2. Uranium isotonic distribution for KE-7-3-8-4 3. Crossover results for BXE-7-3-8-4 ..... 4. Fission product recoveries end •sin stress distributions. tTE-7-3-8-4 17 5. Fission tea release for ETE-7-3-8-4 19 6. Distribution of fission products In the off-gas trains from tTE-7-3-8-4 7. Concentration and distribution of fission products In off-gas train from EIE-7-3-8-4 8. Fission product distribution In the leached burner products, ETE-7-3-S-4. 9. Uranlunt-thoriun distributions for KTE-7-3-7-2 10. Isotopic uranium concentrationa from BXE-7-3-7-2 found after irradiation 11. Crossover and breakage results for fuel stick 7-3-7-2 •. 12. Fission product recoveries and aain stress distribution for 1TE-7-3-7-2 13. Fission gas release in burner off-gas during processing of HE-7-3-7-2 14. distribution aa inferred from aultlchanne: e-alyier gross counts (aeasured In peak Kr-85 channel with background correction ,.............*.. 15. Plataout and trapping of fission products In downstrean off-gas equipment for ETE-7-3-7-2 .... 16. Fission product distribution in the leached burner products for RTE-7-3-7-2 .....

Nuclear Fuels and Reprocessing Technologies: A U.S. Perspective

“…Once the fuel kernels are exposed, methods of extracting the fissile materials include traditional aqueous digestion, supercritical CO 2 solvent extraction (as the carrier for an appropriate extractant), and molten salt dissolution. [628][629][630][631][632][633][634][635][636][637][638]…”