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We have five 30MW Frame6 Gas Turbines. One of the Gas Turbine's exhaust temperature is higher even at low loads (more than 590 degC at 21MW). Its exhaust air temperatures are higher; it takes more fuel (400kg/hour more as compared to other GTs at the same load of 21MW); and the RLNG pressure controllers have unusual opening (6833B valve is 65% open and 6833A is 40% open).
What could be the root cause of the problem?
Should we focus on the controller? Even if the 6833B controller is stuck at 65% opening, still the opening is high for 21 MW. What do you people suggest?
What could be the root cause of the problem?
Should we focus on the controller? Even if the 6833B controller is stuck at 65% opening, still the opening is high for 21 MW. What do you people suggest?