Abstract
The paper presents in detail the methodology for simulation radiation conditions during operation of stations and channels for applied research SIMBO and ISCRA of the NICA complex of JINR. The Monte Carlo program FLUKA was used for simulation. The calculation results for the main operating modes of the stations are presented and discussed. The limiting intensities, at which the established zoning for the personnel is observed, are calculated. The obtained estimates show that the adopted design solutions ensure compliance with radiation safety standards during operation of stations with the limiting beam intensities determined as a result of simulation.