Shared Learnings

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YAW Gear/Motor Failure - Siemens

Date of Incident: 25 January 2017
Description:

During a fault-finding visit to a wind turbine following an extreme high wind weather bomb, a Service Technician found a yaw motor broken apart, resulting in throwing shrapnel throughout the nacelle.

Further inspection identified exposed wires where the yaw motor was terminated.

Original Safety Alert

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