The Improvement of Maintenance Program to Increase Locomotive Reliability through Component Class Grouping

The success of maintenance program for PT KERETA API (Persero) locomotives plays important role in the safety and reliability of the railway service. The existing maintenance program has problems in the lack of accurate maintenance record and the integrated information system involving the logistics, technical and operational. The improvement in the maintenance management system carried out by applying the concept of Reliability Cantered Maintenance (RCM), particularly its accurate framework to identify the likelihood of an asset, in this case a locomotive, experiences failure and the ways to prevent the failure consequences. The work focused on the classification of parts based on their individual quality obtained from component testing/inspection that done regularly in the maintenance workshop during overhaul. Here, the component class reflects its reliability. The consequence of locomotive failure regarded in the weighting of each part as significance of the component, sub assembly or assembly. The class of individual parts will affect the reliability of the relevant sub-assembly, assembly, and eventually the class (reliability) of the locomotive. The paper reports the implementation of RCM concept in the strategy for defining each component class using its testing/inspection data, weighting factors and eventually the class of locomotives. With the knowledge of the locomotive reliability class, the railway operation can be plan in an optimum way, a possible failure can be anticipate, maintenance program can be devise more effectively and eventually, the risk of railway accident can be minimized