Interactive Pipe Inspection (IPI) is building an impressive record of complex inspections of pipe submerged under water. Last year, Underground Construction magazine reported on projects for King County, WA, in which IPI inspected more than 50,000 feet of sanitary sewer lines beneath two lakes.
Following that project, IPI inspected 8,700 linear feet of the fully submerged, active, Lake Whatcom raw water intake tunnel of 78-inch diameter concrete and wood stave pipe in service since the 1940s. The tunnel carries raw water from Lake Whatcom to a screen and treatment facility operated by the city of Bellingham, WA.
For the full article on Underground Construction Magazine, click here.