Which troubleshooting technique is commonly used in gas turbine systems?

In gas turbine systems, performance testing and vibration analysis are essential troubleshooting techniques used to diagnose and address issues effectively. Performance testing involves assessing the operation and efficiency of the gas turbine under various conditions, which helps identify performance drops or operational anomalies. This testing evaluates parameters like temperature, pressure, and flow rates, ensuring that the turbine operates within the specified design limits.

Vibration analysis, on the other hand, focuses on identifying mechanical issues within the turbine components, such as imbalance, misalignment, or wear. Excessive vibrations can indicate potential failures, allowing technicians to take corrective measures before catastrophic damage occurs. This technique provides valuable insights into the machine's health and operational stability.

Combining these methods gives a comprehensive overview of the turbine's performance and mechanical condition, making it a reliable approach to troubleshooting in gas turbine systems. The other options lack the depth and thoroughness of the performance testing and vibration analysis method, as they either focus on limited data sources or do not involve systematic assessment of the turbine's operational parameters.