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Index 431<br />

flutter 56<br />

FOD 202<br />

fogger nozzles 127<br />

foreign object 127<br />

damage 183, 199, 208, 215<br />

fouling 115, 120, 183, 198, 201<br />

FOV 207<br />

free power turbine 20, 72, 186<br />

frequency<br />

broad-band 151<br />

critical 165<br />

discrete 151, 153<br />

octave 151, 154<br />

bandwidths 151<br />

coincidence 164<br />

forcing 164<br />

fretting 214<br />

friability 161<br />

fuel bound nitrogen (FBN) 133<br />

fuel flow 72, 79, 80, 187, 189, 195,<br />

197, 203, 215<br />

control 74<br />

corrected 185<br />

fuel nozzles 37, 38, 41, 64, 65, 66,<br />

209, 214<br />

burnt, plugged or “coked-up”<br />

183, 214<br />

port 214<br />

fuel system 238<br />

fuel valve 73, 177<br />

full-load 80<br />

G<br />

gasifier 235, 239, 242<br />

gas generator 11, 19, 71<br />

discharge total pressure 51<br />

discharge total temperature 51<br />

turbine 72<br />

turbine adiabatic efficiency 51<br />

gas horsepower (GHP) 71, 72<br />

gas path 205<br />

analysis 184, 192, 193, 215<br />

or vibration analysis 208<br />

gas temperature 142<br />

gas turbines 11, 12, 236<br />

performance 121<br />

power plants 21<br />

small 86, 89<br />

gear 97<br />

gearbox 19, 85, 96, 97<br />

gear noise 107<br />

generator drives 19, 20<br />

generators 170, 173, 177, 236<br />

induction 170, 177<br />

synchronous 170, 177<br />

governor lines 81<br />

governor malfunctions 203<br />

gravitational constant 48<br />

GT compressor surge control 78<br />

guide vanes 62<br />

H<br />

head 53, 58, 59, 63<br />

heat 45<br />

vaporization 137<br />

heat recovery steam generator<br />

(HRSG) 232, 235, 250, 253, 255,<br />

262<br />

heavy frame industrial 30<br />

heavy industrial 27<br />

gas turbine 15, 16, 41, 42, 43<br />

units 26<br />

heavy turbines 39<br />

helicopters 20<br />

hertz 151<br />

high efficiency filters 117<br />

barrier 118<br />

high frequency/high tension

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