Rehabilitation of a 42-Inch Industrial Pressure Pipe at Paper Processing Plant

Industrial rehabilitation projects require special solutions. A paper plant in the Charleston, South Carolina, area had 42-in. pressure pipeline that had fully deteriorated and required rehabilitation. The original pipe was a series of ductile iron process sewer pipes running approximately 872 linear feet. Holes and voids had become visible, showing its deteriorated state and putting the plant’s crucial operations at severe risk. The solution chosen was a fiber-reinforced, polyurethane-coated CIPP tube with epoxy resin. The project was unique in that it had three 45-degree bends and three 22-degree bends, requiring a precise installation and quality engineered lining products. The crew successfully lined through the bends in the 750 LF shot. The jobsite was also within 100 yards of the Cooper River in Charleston, South Carolina. The system passed pressure tests and the system was back in operation by the client’s requested deadline, ensuring that any expensive downtime was eliminated, and structurally restoring their pipelines with an AWWA Class IV solution that was able to handle the operating pressures.