Pneumatic System Reliability Enhancement Through Condensation Control in Railway Maintenance Equipment
DOI:
https://doi.org/10.37367/jpi.v9i2.505Keywords:
Sistem Pneumatik, Kondensasi, Air Dryer, Escavator Geismar, Analisis ResikoAbstract
Pneumatic systems are essential components in the operation of railway maintenance machinery, particularly in braking and stabilization functions. The tropical climate of Indonesia, characterized by high humidity, significantly increases the occurrence of condensation in compressed-air systems, resulting in corrosion, reduced component performance, and a heightened risk of failure. This study examines the failure mechanisms of pneumatic components in a Geismar excavator operated by the Railway Maintenance Depot in Ngrombo. The analysis employs Failure Mode and Effects Analysis (FMEA), Risk Priority Number (RPN) assessment, the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), and a SWOT-based evaluation to identify the most effective mitigation strategies. The findings show that condensation is the dominant failure cause, with the highest RPN recorded in the Pneumatic–Hydraulic Converter (RPN = 378). TOPSIS results indicate that increasing maintenance frequency is the most effective mitigation option (score 0.7022), followed by the installation of an air dryer. Implementing these recommendations is projected to reduce failure probability by up to 68% and improve overall pneumatic system reliability from 72% to 94%. These findings provide a technical foundation for developing reliability-centered maintenance strategies for railway maintenance equipment operating in humid tropical environments.
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