In both systems, the bleed air diverted from {TAIL ~ the combustor} may be expanded in an air expander to reduce pressure upstream of the exhaust stack or {HEAD ~ heat recovery steam generator} 
In both systems , the bleed air diverted from { TAIL ~ the combustor } may be expanded in an air expander to reduce pressure upstream of the exhaust stack or { HEAD ~ heat recovery steam generator }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD