Efficiency of Repairs Performed Within the Emergency Repair Subsystem of Municipal Bus Transportation

Abstract

In this paper there have been presented results of an analysis of repair efficiency for an emergency repair subsystem (technical service units) in a selected transportation system. The research object was a real system of municipal transportation, in a given urban agglomeration. Experimental data, necessary to determine values of indexes describing efficiency of repairs performed by the technical service units, come from a selected group of technical objects (city buses) used in the analyzed system. The data was obtained on the basis of experimental tests conducted within the studied system, employing a method of passive experiment, in conditions natural for the technical objects functioning. This work presents a method according to which the values have been determined and the analysis of efficiency of repairs performed within the emergency subsystem has been made. The values of repair efficiency assessment concern selected systems of the analyzed buses. The selection of these systems was made taking into consideration the number of the studied systems failures. The obtained results have been demonstrated in the form of tables and graphically, in charts. On this basis, there has been made an analysis of efficiency of repairs performed by emergency repair units. Due to its general character, the presented method can be used for an assessment of repair efficiency both within operation and maintenance systems of technical objects of different types and efficiency of repairs performed at particular repair stations, groups of stations or subsystems providing vehicles with serviceability.

The method of controlling the efficiency of the airworthiness assurance subsystem in the system of means of transport operation

“…This applies to issues related to the selection of the optimal maintenance and repair strategy, as well as the assessment of the operation of subsystems for ensuring the suitability of service and repair stations. The papers [4,5] propose methods of shaping the readiness of technical back-up stations, while the publications [6,7] present methods for evaluating the effectiveness and efficiency of processes carried out at maintenance and repair stations. Paper [8] presents a method for determining the structure that can be coupled stations in vehicle service systems, while the method of determining the technically justified number of service and repair stations in transport systems is described in paper [9].…”

The method of assessment and formation the availability of the subsystem ensuring fitness for means of transport

“…It reflects issues connected to selection of optimal strategy (policy) of servicing and repair as well as evaluation of the operation of serviceability assurance subsystems (service and repair posts). The authors of papers [6,11] suggested that the methods of shaping the availability of technical backup area posts, whereas papers [9,10] discuss the methods of the evaluation of the effectiveness and productivity of processes carried out at service and repair posts. Paper [3] discusses methods of defining the structure which may link posts at vehicle service systems, whereas the way of defining technically valid number of service and repair posts in transport systems was described in paper [8].…”

Method of Determining the Required Number of Technical Backup Area Posts

“…Papers [3,4,5,10] discuss issues connected with modeling and organization of technical objects service systems. The authors of papers [6,15] suggested that the methods of shaping the availability of technical backup area posts, whereas papers [7,13,14] discuss the methods of the evaluation of the effectiveness and productivity of processes carried out at service and repair posts. Paper [1] discusses methods of defining the structure which may link posts at vehicle service systems, whereas the way of defining technically valid number of service and repair posts in transport systems was described in paper [8].…”