INTEGRATED LOGISTICS MANAGEMENT BASED ON MULTI-CRITERIA ASSESSMENT OF MACHINERY TECHNICAL CONDITION

Abstract

PURPOSE. The work assesses the influence degree of various factors causing significant difficulties in planning the technical and production operation of machines and the actual technical state of machinery. METHODS. To compensate the shortage of information in the control process of transport and technological complex operation and decision- making for achieving the planned level of machinery technical readiness an expert method was used that allowed to build the a priori ranking of the factors having the most significant effect when controlling complex technical systems. RESULTS AND THEIR DISCUSSION. The Pareto and Ishikawa diagrams were constructed based on the data of West Siberian railway on the failures of nodes and systems of track machinery of a snowplough-class (SP-class). The analysis was given to the causes of failures by the “5 why” method. Based on the opinions of experts eight factors, which could be the root cause of failures, were ranked. The deviations of the sum of ranks from their average sum were determined as well as the specific weights and the place occupied by the factors according to their importance. The variance was calculated and the a priori diagram of ranks was constructed. The value of the concordance coefficient W = 0.876 indicates a high degree of consistency in experts’ opinions that confirms the statistical reliability of the materials used in the study. CONCLUSIONS. A number of measures aimed at improving the organization of snowplough machinery technical operation has been determined in order to prevent the failure of individual nodes and systems of the track machines of the SP class.