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coupling face failure

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san1021

san1021

Mechanical
Jul 31, 2003
1
dear sir
I 'VE PROBLEM TO ASK YOU,ABOUT OUR POWERPLANT . ONE MONTH AGO,WE FOUND REVERSE POWER EVENT ON THERMAL POWERPLANT 550 MW.AFTER WE INSPECT MACHINE,WE FOUND GENERATOR DAMAGED CAN'T OPERATED AGAIN.STEAM TURBINE ROTOR (HIP,LP1,LP2 ROTOR) DAMAGED ON ALL COUPLING FACE LIKE ELECTRIC ARC.I'D LIKE TO KNOW COUNTER MEASURE FOR CORRECT COUPLING FACE DAMAGED
 
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I would say it depends on the importance of the damages.

Cyril Guichard
Mechanical Engineer
 
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San1021,
Sounds like stray current or a static charge.
 
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