Environmental Services completed work in 2013 on cured-in-place sewer pipe-lining repair projects in several Portland neighborhoods. The project repaired about 12,000 feet of sewer pipe ranging in diameter from eight inches to 54-inches.
Cured-in-place pipe-lining eliminates the need to excavate trenches to repair sewer pipes, so the work creates far less surface disruption. Repair crews access sewer lines through manholes in the street. At each work site, crews set up a pump and temporary surface lines to pump sewage around the work area, and then insert a flexible resin liner that adheres to the inside of the pipe. Hot water or steam circulated through the pipe hardens the liner and gives the pipe a new interior surface.
Cured-in-place pipe-lining doesn’t require digging a trench. Work crews access the sewer from manholes to insert a flexible liner inside the old pipe. Hot water or steam is then pumped into the sewer to flatten the lining against the inside of the old pipe. The liner gradually hardens to form a rigid, smooth surface.
For More Information
Contact Joe Annett at 503-823-2034.