Project Tag: enclosed space

Hydroelectric Tunnel Inspection

Global was contracted to perform tunnel inspection dive services at a hydroelectric facility in Washington. The team conducted 425’ and 220’ penetration dives at depths not exceeding 30 feet into the facility’s water-filled rock access tunnel. The 6-person dive crew drove 4×4 supply trucks ½ mile into the tunnel to access the site, dropping approximately ¼ …