Situation analysis of locomotive reliability on the Far Eastern railway

Under the operating conditions of the locomotive fleet, a preventive maintenance and current repair system for locomotives is used, on the basis of which reliability is managed by regulating the norms of overhaul runs. Regulation of the norms of overhaul runs is carried out to optimize the risks of failure of locomotives along the route, thus the system for managing the reliability of the locomotive fleet is arranged. The conditions for regulating the norms of overhaul runs of locomotives are limited by the internal regulations of the monopoly company (JSC Russian Railways) and take discrete values of no more than 20 % of the established values. Often, the regulation of the norms of overhaul runs of locomotives is carried out only in the direction of increase due to attempts to reduce the cost of maintenance and repair. However, this approach does not take into account the possibility of increasing costs due to the consequences of a failure along the route and unscheduled repairs, which characterizes the lack of accountability in making such a decision, which is undoubtedly an urgent problem for the locomotive complex.The article presents the statistics of failures of locomotive units for enlarged groups of equipment according to the form TO-15 “Report on unscheduled repair of locomotives” for the Far Eastern Railway and uses methods for situational analysis of locomotive failures.As a result of a situational analysis of locomotive failures, limiting (overhaul run norms) groups of locomotive units were established, the stages for resolving the issue of the lack of accountability of decisions made under the conditions of optimization of locomotive run overhaul norms were determined.The value of the results obtained lies in the possibility of improving the system for managing the reliability of locomotives — the system of maintenance and repair in the field of decision-making on the gradient of optimizing the norms of overhaul runs.