With the use of the precision MCU code the direct-charge sensor response was calculated in three FAs for the full-scale VVER-1200 reactor core model in the course of the reactor run. The consideration was given to the feedbacks for fuel and coolant temperatures, coolant density, 135Xe equilibrium concentration and with account of boric acid concentration. The calculation was carried out to the burn-up fraction value of 350 effective days. Based on the results obtained, the conclusion can be made that if we compare the sensor signals in three burn-up time points with fission rate values for six fuel pins that surround the specific detectors, their profiles have the same physical pattern. At the same time, the sensor readings have reasonable values. Calculations were performed under multiprocessor mode of operation within a reasonable period of time, and the statistic uncertainty of the signal did not exceed 0.2 %.
VVER-type reactor, full-scale model, core, MCU code, feedback, direct-charge sensor
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