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Pipe Bursting Replaces Deteriorating Pipe

Ductile Iron Pipe (DIP), once the pipe material of choice in southeastern North Carolina, has become an operating headache costing many local agencies millions of dollars to construct replacement pipelines over time. Exterior corrosion from the salty coastal environment and internal corrosion from hydrogen sulfide production in force mains are the primary culprits. Rather than replace in-kind, most area public utilities are transitioning to PVC pipe as a long term solution to corrosion problems. One recent example is the Cape Fear Public Utility Authority (CFPUA) Northeast Interceptor Rehabilitation Phase II Project, designed by Kimley-Horn & Associates. The project scope included replacing 5,039 LF of 20-inch DIP force main. The project was bid in 2014 and constructed late that year and into early 2015.

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