BC Hydro manages more than 18,000 km (11,185 miles) of transmission lines, operating at voltages from 60 kV to 500 kV, across some of the most rugged and remote terrain in North America. This creates logistical difficulties in surveying, managing and treating rights-of-way (ROW) and assets. Crews inspect the lines using a combination of aerial and ground-based surveys, whereby they collect site-specific information for treatment areas, treatment methods and environmental considerations in ...

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