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In my power plant where I work in Ghana, we have 4 Frame 6 GE gas turbines. Recently, one of them underwent a major retrofit, ie the turbine blades were changed and was started normally. However, during the second start up after this maintenance, the turbine started normally but after firing, the acceleration could not take place. the diesel engine speed remained at 1800rpm and turbine speed remained at 41.6% for about 3 minutes and then turbine speed began to decrease. it is worth noting that the fuel control status changed to temperature control because at that turbine speed the exhaust temperature was already 567 degrees Celsius.
what could be the possible causes and how do we solve this issue?
Thank you
what could be the possible causes and how do we solve this issue?
Thank you