<![CDATA[The medium-speed roller mill at Kendari-3 Power Plant’s Unit 2 experienced significant wear, efficiency decline, and operational instability due to prolonged continuous operation, necessitating a systematic optimization approach. This study aims to analyze, implement, and evaluate maintenance optimization strategies to restore and enhance mill performance, while establishing a structured preventive maintenance framework for long-term reliability. A research methodology combining engineering inspection, technical diagnostics, overhaul execution, and quantitative performance testing was employed. The technical interventions included optimization of the maintenance layout, upgrading of critical material components, enhancement of sealing systems, fine adjustments of operational parameters, expansion of air duct capacity, and the development of a performance-based preventive maintenance file. Performance data were collected before and after the overhaul to measure operational gains. The results demonstrate that the mill’s rated output was successfully restored and stabilized at ?35 t/h, accompanied by a 3% reduction in specific power consumption under full-load conditions. Furthermore, the service life of grinding rollers increased by approximately 30%, while total maintenance duration was reduced by 20%, indicating substantial improvements in reliability, efficiency, and maintainability. This research provides valuable technical insights and practical references for optimizing pulverizing systems in thermal power plants and contributes to engineering-based decision-making for equipment maintenance strategies.]]>
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