The cooperative hired Haverfield Aviation of Gettysburg, PA, to inspect the markers where lines cross the Missouri River and replace the damaged ones.Markers on six lines were inspected: two south of Mandan; one near Wilton, and three at the Leland Olds Station near Stanton. These photos were taken about 25 miles south of Mandan, where the 345-kilovolt line that runs from the Antelope Valley Station to the Broadland, SD, substation crosses the Missouri River.
Helicopter replaces aerial markers on Basin Electric line
May 3, 2011 by 1 Comment
high-voltage transmission lines in North Dakota. Repairs like this are not frequently needed, and they’re done from the air while the line is energized.It’s a bird … it’s a plane. No, it’s a helicopter — carrying a big beach ball? That’s not a beach ball. It’s an aerial marker, and it has a very serious purpose in life. The large, brightly colored spheres make transmission lines more visible at places where they need to be, like river crossings. Basin Electric took to the skies in late April as a helicopter was used to inspect and replace aerial markers on