Modeling the deformation of RBMK graphite columns surrounding a damaged cell with a ruptured channel pipe taking aging into account

The results of modeling of the deformation of RBMK graphite columns surrounding a damaged cell with a rupture channel tube and analysis of the possibility of multiple rupture of the tubes in such columns as a result of the action of the steam–water mixture flowing out of the rupture are presented. The aging of the masonry is taken into account in connection with RBMK service life extension. The calculations of the kinetics of the deflections of the columns, surrounding a damaged cell, and the strength of the channel tubes of these columns showed that multiple ruptures of tubes following an emergency situation in accidents with an initial rupture of the RBMK process channel are impossible.