AS GAS TURBINE STARTED, BEFORE REACHING TO MGS FUEL COME IN TO TEMPERATURE CONTROL

TODAY GAS TURBINE SUDDENLY tripped on turbine exhaust over temperature. After that GT started GT was going in temperature control mode at 39% (4377 rpm) HP turbine speed. LP turbine speed was at 15% (1224 rpm) before reaching to MGS (LP-68%). Screen shots are attached for reference .What may be reason
 

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TODAY GAS TURBINE SUDDENLY tripped on turbine exhaust over temperature ....YOU mean GT tripped by High exhaust temp spread...

What are the alarms annunciated before and during such event can you list and share them here..

Type /Model /Frame of this Unit
Control system installed
 
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