[en] In this report, a sensitivity analysis was performed to evaluate the effect that three operations and control room improvements have on the core melt frequency estimated for the Arkansas Nuclear One-Unit 1 (ANO-1) nuclear power plant. The three improvements evaluated were (1) installation of a safety parameter display system, (2) installation of a margin to saturation annunicator, and (3) increased control room operator manning. Core melt frequencies were calculated through use of the plant models published in the ANO-1 probabilistic risk assessment. The three improvements were found to decrease the ANO-1 core melt frequency by approximately a factor of 2.5