Reliability-Based Maintenance for Operational Cost Efficiency in Geothermal Power Plants
DOI:
https://doi.org/10.31328/bmb.v7i1.972Keywords:
cost efficiency, geothermal power plant, investment feasibility, operational performance, reliability-based maintenanceAbstract
Operational cost efficiency is essential for maintaining the sustainability and competitiveness of energy companies, particularly in geothermal power plants with highly complex operational systems. However, maintenance activities that still rely heavily on corrective approaches often lead to frequent failures, increased downtime, and higher operational costs. This study aims to analyze the implementation of reliability-based maintenance (RBM) and evaluate its investment feasibility in improving operational cost efficiency. The study employs a descriptive quantitative approach using a case study on the Fluid Collection and Reinjection System (FCRS) at the Lumut Balai Geothermal Power Plant. Data were analyzed through before–after comparison, cost-benefit analysis, return on investment (ROI), and payback period analysis. The results indicate that the implementation of preventive maintenance innovation through the CLEAR-FCRS system significantly reduced downtime duration from 2–3 hours to 15–30 minutes and decreased failure frequency. Financially, an investment of IDR 44,000,000 generated annual operational savings of IDR 177,600,000, with an ROI of 403.64% and a payback period of approximately three months. These findings demonstrate that integrating reliability-based maintenance with investment feasibility analysis can significantly improve operational reliability, cost efficiency, and overall operational performance in geothermal power plants.
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