Calculational model of fission product diffusion deposition in a HTGR reactor

A calculational model of radioactive nuclide diffusion deposition on the surface of gas-cooled reactor components is suggested. The model is based on the introduction of the wall absobility parameters, that permits to take into account the processes of interaction of deposited particles with a wall. Calculational and experimental foundation for the deposition model suggested as applied to HTGR reactor conditions is carried out. The calculational and experimental analysis has shown that the model suggested permits to carry out an engineering calculation of diffusion deposition of various fission products on reactor pipeline and component walls, taking into account physical and hydrodynamic characteristics of a coolant, as well as properties and other factors, using the RADON program developed