Sensitivity Studies for the Decay Heat Calculation for $^{235}$U

Abstract

The sensitivity analysis for 235 U decay heat calculation was performed. The simulations were carried out in SCALE/ORIGEN module using two different databases with fission yields (SCALE's library and JEFF-3.1) and two databases with decay properties (SCALE's library and ENDF/B-VII.1). Results obtained using different datasets were compared and the list of isotopes having the largest impact on the change in calculated decay heat was drawn up.