Aerial tree trimming planned for southwest Wisconsin area
Helicopter, air saw to be used along electric transmission line
MADISON, Wis. – Crews are planning to use a helicopter and heavy-duty air saw beginning this week to trim trees along an existing 69,000-volt transmission line from the Boscobel to the Wauzeka, Wis., area.
American Transmission Co. has contracted with Aerial Solutions, Inc. to manage vegetation growth along its transmission line corridors. The helicopters used by Aerial Solutions are equipped with heavy-duty air saws and rotary blades suspended on a 90- to 100-foot vertical boom.
When compared to the work of ground-based crews, the aerial saw has been highly efficient. “Typically it takes ground crews several days to accomplish what an aerial saw crew can in a few hours,” said Joe Benzschawel, ATC vegetation management specialist. “Since the work is weather-dependent, it could take one week for the aerial saw to complete the vegetation maintenance in this area.”
Managing the growth of trees and other vegetation near high-voltage transmission lines is important to help ensure public safety and electric system reliability. ATC performs routine vegetation management on its 9,540 miles of transmission lines in five-year cycles.