Machinery breakdown on a water turbine I AGCS

The power station is operated with a remote control system, without local human attendance. During a routine remote checking, the operator noted that the generator was not delivering any power but was running in motor mode. After isolation and water drainage, the inspection of the internal parts showed that the wheel was on free rotation on the shaft and had jammed in the inlet guide vanes and the exhaust bushing.

Occupancy: Hydropower Station
Property Damages: € 100,000
Business Interruption: 2 Months
Main Technical Data: Type: FRANCIS turbine
Power: 1,500 kW

Total head: 11 m
Flow: 60,000 m3/h
Speed: 157 rpm
Wheel diameter: 2 m
Bearing: Water lubricated journal bearinge

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