BurnDat utility is designed for preparing in the MCU code format of the combinatorial geometry presentation (by pin, by assembly or mixed (combined by pin/by assembly)) of the fission neutron density, averaged over the given sequence of power station unit companies, based on the burnup data (the density of fission debris), available in the output files of PERMAK-A and BIPR-7A codes, which perform, respectively, by pin and by assembly 3D calculation of the VVER type nuclear reactor core company. In the presented version of the BurnDat utility the possibility of preparing the combinatorial geometry presentation of the source is implemented for the VVER-440, VVER-1000 and VVER-1200 type nuclear reactor cores.

Mathematical problems and theory of numerical methods