At present the problem of vertical transport safety is crucial as it is evidenced by the statistical data on the number of accidents and injuries There are no regulatory requirements for permissible safety level of the elevator performance. service support system for the elevator is aimed at maintaining the performance standard level throughout the specified service life of vertical transportation. For the elevator equipment which is a technically complex system, hazard is manifested in the form of failure of various structural elements that affect safety. In this study the probability of a hazardous situation is characterized as risk-failure.