For Indonesia, ensuring stable baseload power generation is essential to ensuring energy security. An essential and sustainable part of accomplishing this goal is the utilization of geothermal power plants. Like all thermal power plants, Geothermal also undergoes planned outages which involve a thorough major inspection resulting in a longer shutdown time. This case study investigates the use of probabilistic statistical analysis, condition monitoring analysis and risk-based maintenance to optimize turnaround inspection schedule to increase power plant availability & productivity. Through the application of Monte-Carlo simulation, the plant was able to determine if it could safely postpone its scheduled inspection until the following year. This option was validated by using a Plan- Do-Check-Act (PDCA) cycle that incorporated risk-based maintenance. This required carrying out in-depth asset condition assessments, carefully identifying failure symptoms and proactively managing any risks associated with the delay, and putting corrective measures in place as needed. This technique was successfully implemented, yielding a gain of 24 GWh of electricity generation, or almost USD Two million in additional revenue. This demonstrates not only how well probabilistic analysis works to optimize maintenance schedules, but also how crucial proactive risk management and continuous improvement techniques are to maximizing the availability of vital infrastructure, such as geothermal power plants.

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Risk Mapping for a Geothermal Power Plant Combines Statistical and Condition Monitoring Analysis to Justify Plant Maintenance Overhaul Strategy

  • Fransisco T. P. Simamora,
  • Efrata Pratenta Meliala,
  • Muhammad Vito Hamza,
  • Muhammad Thasril,
  • N. Hanifah

摘要

For Indonesia, ensuring stable baseload power generation is essential to ensuring energy security. An essential and sustainable part of accomplishing this goal is the utilization of geothermal power plants. Like all thermal power plants, Geothermal also undergoes planned outages which involve a thorough major inspection resulting in a longer shutdown time. This case study investigates the use of probabilistic statistical analysis, condition monitoring analysis and risk-based maintenance to optimize turnaround inspection schedule to increase power plant availability & productivity. Through the application of Monte-Carlo simulation, the plant was able to determine if it could safely postpone its scheduled inspection until the following year. This option was validated by using a Plan- Do-Check-Act (PDCA) cycle that incorporated risk-based maintenance. This required carrying out in-depth asset condition assessments, carefully identifying failure symptoms and proactively managing any risks associated with the delay, and putting corrective measures in place as needed. This technique was successfully implemented, yielding a gain of 24 GWh of electricity generation, or almost USD Two million in additional revenue. This demonstrates not only how well probabilistic analysis works to optimize maintenance schedules, but also how crucial proactive risk management and continuous improvement techniques are to maximizing the availability of vital infrastructure, such as geothermal power plants.