Using nonlinear model equations of a liquid metal cooled nuclear reactor, effect of magnitude and change in direction of the two manipulated variables on the steady-state gains and time constants are evaluated. The relative gain array (RGA) analysis shows that the interaction between the two feedback loops, one controlling neutron power using control rod position and the other controlling core coolant outlet temperature using pump fractional flow, are not significant. Individual loops are tuned for the selection of controller parameters to get a stable response on the nonlinear system. The performance of the two loops for simultaneous step changes in the set points are evaluated.