SUMMARY

Thesis defense is the culmination of a 12 month research effort to study the error propagation in Monte Carlo simulations. Four test problems were designed to understand the error propagation at the fuel assembly and reactor core level. Each test problem was run 19 times by changing the initial seed number for the pseudo random-number generator. An analysis of the code's reported and the observed errors in keff, pin power, and isotopic number density is presented.