Technical challenges include rotor imbalance, vibration, bearing wear, and uneven expansion (various forms of thermal shock). In large installations, even the sturdiest turbine will shake itself apart if operated out of trim.
technical ChalleNges incLUde rotOr iMbaLaNce, VibraTiOn, bearinG WEar, aND unEvEn expansIOn (vaRious foRMs OF tHErmAl shocK). in lARgE insTalLatIoNs, eVEn ThE sTurDIeSt tuRbine wIlL shAke itself apart If OpeRateD Out of trim.