Aviation Marker Ball Installation on the Big Eddy-Knight 500kV Transmission Line Transmission
Aviation Marker Ball Installation on the Big Eddy-Knight 500kV Transmission Line |
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| Client | Bonneville Power Administration (BPA) |
| Completion Date | November 2016 |
| Location | The Dalles, Oregon |
| Completed by | Sturgeon Electric Company, Inc. |
Sturgeon Electric crews installed 23 aviation marker balls and associated hardware atop BPA’s Big Eddy-Knight 500kV Transmission Line. The project marked the first time a federal nonprofit agency allowed a transmission line contractor to use Class B Human External Cargo (HEC) helicopter methods, which involves flying line workers below a helicopter in an “air chair” to accomplish the required work.