Case Studies: CIPP Lining Methods and Projects

Case Studies: CIPP Lining Methods and Projects

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Hot temps are no match for UV cure system

Problem: Brewers at a Cincinnati craft brewery were troubled when the pipes in their brand-new production facility were failing. The brewery, built in 2018, was specially designed to fit their needs and outfitted with fresh PVC pipes. The pipe network was located under a concrete slab with rows of brew kettles and fermentation tanks, so the brewers needed a solution to fix the pipe issues without tearing up the entire brewery and disrupting production. They turned to CPR, a NuFlow-certified contractor, to solve the problem. When CPR performed a camera inspection of the pipe infrastructure, it found multiple breaks in the joints on the mainline of the system. The extreme temperatures used during the brewing process caused the breaks, resulting in overflow and loss of materials.

Solution: The CPR team recommended lining the pipes to fix the problem with the joints as well as prevent any future issues from the constant high temperatures. While the customer was eager to fix the problem, there were concerns about the process. They did not want to shut down brewery production and wanted to ensure the product could withstand the temperatures regularly used in the brewing process, was resistant to the chemicals used in the cleaning process, and wouldn’t affect the quality of the beer. NuFlow recommended using NuCure Cold Cure UV technology. According to NuFlow’s technical director Grant Whittle, “The dense cure of the NuCure system results in exceptionally high heat deflection temperature, enabling the NuCure CCUV liners to be utilized in very high temperature applications. It is a perfect application at the brewery to combat extreme temperature fluctuations. The UV system’s ability to tolerate high temperatures opens new markets that other lining systems cannot adequately serve.” 

Result: The CPR team worked with the customer to accommodate the production schedule of the brewers and make sure there wasn’t interference. Working on site for three days and three nights, they lined 430 feet of 4- and 6-inch mainline PVC and reinstated all the lateral lines. The brewery was very happy with the outcome and the cost was half of the other bid received. 866-430-2134;

Severe I&I issues at historic private school solved

Problem: A private school in Massachusetts discovered it was having severe inflow and infiltration problems after the city flagged it. Founded in 1778, the school has a pipe system that was likely installed in a very different landscape and time. Currently the school is near sensitive wetland and wooded areas, raising environmental concerns surrounding pipe lining methods and chemical leaching into the soil. Several access manholes were only accessible by foot or ATV. Combined with backups being caused due to root intrusion and the major I&I issues, the accessibility challenges created a scenario that required both powerful and transportable equipment. 

Solution: New England Pipe Restoration was called in to solve the issues for the school. The team chose Pipeline Renewal Technologies’ SpeedyLight+ for LED-based UV curing and Omega Liner’s fully encapsulated UV liner to resolve both access and environmental challenges. LED UV cure meant the project would have no downstream steam condensate to capture and dispose of, and its compact size made transportation to many of the access points possible via an ATV trailer. A total of 1,400 feet of 6-inch pipe was lined, completed in segments of 300 feet each. SpeedyLight+ has a reach of 328 feet, and efficiently tackled each segment. 

Result: The school was so impressed with the work done that it contracted New England Pipe Restoration for an additional project. 866-936-8476;

Structural liner rehabilitates 220 linear feet of storm pipe

Problem: The city of Carmel, Indiana, was in a dire situation when a rusted water pipe ruptured, creating a massive sinkhole in the road at a major intersection. Fortunately, officers arrived at the scene and secured the area surrounding the 12-by-18-foot hole before any accidents occurred. The storm pipe was removed and replaced, but the city was faced with another obstacle: There was another 220 linear feet of storm pipe from the replaced section to a drainage lake that could collapse at any time. 

Solution: Removing the remaining pipe was not a practical option due to the location of utilities in the area. Conco Spray Solutions, an Indiana-based contractor, provided the city with an alternative solution: a structural liner that would hold infiltration back and provide a long-term structural solution with a 50-year design life. Once the lake was pumped down, the Conco team prepared the pipe. Conco pressure washed the pipe surface at 5,000 psi. The team then used mortar to repair the rusted voids in the invert and eventually a chemical grout was utilized. Conditions dictated a fully deteriorated protocol with water traffic load. Sprayroq’s SprayWall lining was applied at a thickness of approximately 630 mils. 

Result: By providing quick rehabilitation and not removing the existing structure, Conco Spray Solutions minimized the disruption of traffic flow and preserved the natural landscape. 205-957-0020;


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