[1F04-06] Simulation & Nuclear Data Validation

[1F06] Sensitivity analysis of k_eff based on three FRENDY/MG generated multi-group libraries with four sodium-cooled fast reactors.

*Junshuang Fan¹, Go Chiba¹ (1. Hokkaido Univ.)

Keywords:FRENDY/MG, fast reactor, keff, sensitivity analysis

The k_eff of four sodium-cooled fast reactors are calculated with three libraries which are generated by FRENDY/MG based on ENDF/B-VIII.0, JENDL-4.0 and JEFF-3.3, respectively. Obvious difference can be observed although the latest libraries were adopted. Then, sensitivity analysis on k_eff is performed to confirm the contribution of each nuclide on k_eff. The sensitivity analysis suggests not only ²³⁸U, ²³⁹Pu, ²⁴⁰Pu, but also O, Na and Fe contribute to the differences on k_eff.