Evaluation of the Effectiveness of a Preventive Maintenance Checklist on Generator Downtime
Keywords:
Preventive maintenance, maintenance checklist, downtime, generator setAbstract
A generator set (genset) is a critical supporting equipment for ensuring the continuity of electrical power supply; therefore, its reliability highly depends on the maintenance system applied. One of the common problems encountered is high downtime caused by recurrent failures that are not detected at an early stage. This study aims to evaluate the effectiveness of implementing a preventive maintenance checklist in reducing genset downtime. The research method employed a comparative study by analyzing downtime data before and after the implementation of the preventive maintenance checklist. Data were collected from failure records, downtime duration, and maintenance activities during March–May 2025 (before implementation) and June–August 2025 (after implementation). The results indicate that the number of failures decreased from five to two occurrences, while total downtime was reduced from 600 minutes to 120 minutes, representing a 80% reduction. This reduction demonstrates that the preventive maintenance checklist improves inspection discipline, enables early detection of potential failures, and minimizes operational disruptions of the genset. Therefore, the preventive maintenance checklist is proven to be an effective maintenance control tool for enhancing genset reliability and reducing operational downtime.
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