Light crude oil (L.C.O) leakage when 126 MW ge frame 9E gas turbine is on preselect load.

J

Thread Starter

Jonas

Our gas turbine is 126MW ge frame 9E. We use diesel for starting and shutting down. When we are running with diesel on preselect load (i.e from 1MW to about 100MW)you would not find any leakage of diesel coming out from the false start drain line but the moment you change over to light crude oil on preselect load,you will find Light crude oil coming out of the false start drain unless you go to baseload before it would stop. My question is why when we are running with diesel it does not leak on preselect load but when you change to light crude oil it does leaks on preselect load.
 
Which false start drain is the heavy fuel oil coming out of? From the lower combustion cans? From the exhaust plenum? From the combustion wrapper?

Have you consulted the Piping Schematic drawings (P&IDs) to understand how heavy fuel might be getting into the false start drain?

 
Top