G
Hi!
Our company operate Frame 9E engine with DLN1. Fuel type gas only. Last time we have an issue with unstable work on mid load. Engine jump from Premixed to Lean-lean on about 60Mw (55% of full load) When we unload engine from 70 Mw to 60 Mw CO raise from 35 ppm to 258. Is it sign of blow out?
My investigation show that fuel split settings was changed (probable by GE last year during mapping) from 81-81-81-81 to 73-76-79-79 percent. No changes has done in gas fuel valves or IGV settings. IBH switched on. I cannot get any information from GE why they did these changes.
Now I think to return to initial setting of fuel split but I worry about acoustic. There is no and combustion dynamic monitoring system. Could you please explain what kind of risks I can get if I change these settings without CDMS?
Our company operate Frame 9E engine with DLN1. Fuel type gas only. Last time we have an issue with unstable work on mid load. Engine jump from Premixed to Lean-lean on about 60Mw (55% of full load) When we unload engine from 70 Mw to 60 Mw CO raise from 35 ppm to 258. Is it sign of blow out?
My investigation show that fuel split settings was changed (probable by GE last year during mapping) from 81-81-81-81 to 73-76-79-79 percent. No changes has done in gas fuel valves or IGV settings. IBH switched on. I cannot get any information from GE why they did these changes.
Now I think to return to initial setting of fuel split but I worry about acoustic. There is no and combustion dynamic monitoring system. Could you please explain what kind of risks I can get if I change these settings without CDMS?