Calculation of reactivity coefficients with burn-up changes for VVER-1000 reactor
O Safarzadeh, F Saadatian-Derakhshandeh… - Progress in Nuclear …, 2015 - Elsevier
In this paper, the temperature reactivity coefficients of fuel and coolant are calculated. These
coefficients are one of the important inherent factors in rector power control. We also
calculated the reactivity coefficient of boric acid concentration and moderator density. All of
these coefficients are calculated during burn-up changes to consider the effects of fission
products build-up and fuel consumption. To perform neutronic calculations, the reactor core
has been simulated using DRAGON4 and DONJON4. The thermal–hydraulic (T–H) …
coefficients are one of the important inherent factors in rector power control. We also
calculated the reactivity coefficient of boric acid concentration and moderator density. All of
these coefficients are calculated during burn-up changes to consider the effects of fission
products build-up and fuel consumption. To perform neutronic calculations, the reactor core
has been simulated using DRAGON4 and DONJON4. The thermal–hydraulic (T–H) …