I
I am working as control room operator on GE frame 9e gas turbine last 9 years. I have a question regarding force cooling of machine via crank continuously running around 10 hours.
For achieve wheelspace temperature and force cooling time, we start both 88BT AND both 88TK fans. Manager do it for his efficiency to not loose time of shutdown and fast startup.
My consideration, is this good for a long term of machine auxiliaries?
Yes during force cooling time we monitor winding temperatures of cranking motor.
Its reach around 104 Celsius maximum. Its high alarm on 140 celcius and high high alarm 160 Celsius.
on high high crank trip.
For achieve wheelspace temperature and force cooling time, we start both 88BT AND both 88TK fans. Manager do it for his efficiency to not loose time of shutdown and fast startup.
My consideration, is this good for a long term of machine auxiliaries?
Yes during force cooling time we monitor winding temperatures of cranking motor.
Its reach around 104 Celsius maximum. Its high alarm on 140 celcius and high high alarm 160 Celsius.
on high high crank trip.