The expert-analytical tool of the analysis of accidents on radiation-dangerous facilities

The article describes the expert-analytical tool of the analysis of radiation accidents in the radiation-dangerous facilities and areas, based on the construction of mathematical model of security of the studied object and following automatic constructing his graphic model. The method allows to obtain reliable information about the adequacy of the sales on the radiation hazardous facility multiple-echelon security system, and to the ranking of the necessary corrective measures of priority to long-term.