CHANGE OF RBMK REACTIVITY AND POWER DURING MEASUREMENTS OF THE STEAM COEFFICIENT OF REACTIVITY

摘要

The results of a numerical simulation of an experiment on measurement of the steam coefficient of the reactivity of a RBMK reactor are presented. The "inverted variation of the reactivity" effect is explained. The computational results show that this effect is due to the nonuniformity of the load and coolant flow rate in the channels in the core.