Possibility for using a low-enriched target to produce 99Mo in the MAK-2 research channel of the VVR-ts reactor

Thermal-hydraulic calculations have been conducted with respect to the active part of MAK-2 loop facility VVR-ts research reactor for 99 Mo production. The computational studies were undertaken both case using a highly 235 U enriched target and low-enriched target. calculation was performed actual technical characteristics channel. power density two simulated cases obtained in course preliminary neutronic selected most heated problem is solved steady-state mode channel coolant flow takes into account dependence thermophysical parameters materials on temperature. volumetric temperature distribution process calculation. results present maximum temperatures An analysis has shown that aluminum sleeve filling do not exceed critical values. For analyzed cases, localized at point near wall surface does reach boiling given pressure. study therefore it possible reduce enrichment fissile material 19.7%, provided average mixture amount remain same. At same time, medicinally important generated will practically change, which lead reduced capital costs matrix.