How to reduce combustion dynamics and pressure oscillations on a GE Vernova GE 7HA.02 / 7F.05 gas turbine
High combustion dynamics come from fuel-air ratio instability in the combustion can. Verify fuel nozzle pilot split, check for blocked nozzles, and compare fuel heating value to the turbine control system's expected value.
~120 min7 steps
How to recover power output loss from compressor fouling on a GE Vernova GE 7HA.02 / 7F.05 gas turbine
Compressor fouling reduces airflow and raises heat rate. Perform an online water wash first. If performance does not recover, plan an offline crank wash at the next available outage.
~90 min7 steps
How to investigate hot-section over-temperature and blade oxidation on a GE Vernova GE 7HA.02 / 7F.05 gas turbine
Wide exhaust temperature spread with high firing temperature points to combustion non-uniformity or blocked bucket cooling. Perform a borescope inspection and check fuel nozzle balance.
~240 min7 steps