Perpustakaan Digital ITB

Trains are one of the main modes of long-distance transportation in Indonesia. Demand of long-distance train service has been rising annually. With the high demand, Indonesia Railway (KAI) company would like to improve passenger train services in term of safety, comfort, and efficiency. On the other side, in recent years the National Standards Agency (BSN) in Indonesia has adopted Reliability, Availability, Maintainability, and Safety (RAMS) standard from International Electrotechnical Commission (IEC). Thus, RAMS evaluation becomes inevitable from the railway industry in Indonesia starting from the design process up to the operational and maintenance. One of the most critical part of the passenger car is the braking system. If there is a failure in the braking system component it may affect the effectiveness, comfort and safety of the passenger car. Thus, reliability and criticality analysis are a vital evaluation to be done to the braking system. This study focuses on analyzing the pneumatic braking system of a passenger car reliability and criticality using Failure Mode, Effects, and Critical Analysis (FMECA). By using FMECA the critical points of the braking system which has the most severe and frequent failure mode can be determined. The result of the study reveals that components that have the highest criticality are brake cylinder, distributor valve, and slack adjuster. The total reliability of the braking system decreases to 85% after around 75 operation hours and has dropped down to 54% after 300 operation hours.