The results of computational studies of the radiation characteristics and mass of the structures in the VVER-1200 reactor facility in the AES-2006 design with respect to the activity group as a function of the holding period after final shutdown of the power-generating unit are presented. The three-dimensional program KATRIN was used to obtain the radiation characteristics. It is shown that after final shutdown all metal structures in VVER-1200 will remain radioactive wastes for up to 150 years and the concrete structures after a holding period of more than 60 years will remain in the radioactive materials category.