Powys, Wales
Moel Fawr WTG 07
Nacelle and blade inspection after a gearbox temperature alarm. Gearbox housing at 74.2 °C, 22 K above the fleet average.
21
ha
Area covered
52
min
Flight time
6
flagged
Anomalies found
74
°C
Hottest reading
Findings
Gearbox housing, rear bearing: 74.2 °C
Leading-edge erosion on blade B, 1.8 m stretch
Lightning receptor on blade C discoloured
Debrief
The turbine was parked with blade A pointing down; the flight plan orbited the nacelle and then ran each blade root-to-tip on both faces.
The gearbox reading was attached to the SCADA alarm, so the alarm and the photo sit on the same ticket.
The SCADA alarm told us something was warm. The frame told us which bearing.
Rhys Pritchard, wind technician
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