CIPP Lining Methods and Projects

CIPP Lining Methods and Projects
Pipe lining system saves apartment complex tenants from relocation

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  Pipe lining system saves apartment complex tenants from relocation

Problem
Reddington Pines Apartments, a multiple-unit apartment complex in Newark, Ohio, had a potable underground water service leak. The water service pipe was 1-inch copper, and ran approximately 40 feet from the curb stop to inside the building. The pipe was partially located under the building and concrete floor, which would take a considerable amount of time to excavate and replace, meaning the tenants would have to be temporarily relocated. Facility owners sought an alternative. 

Solution
An installer inserted a Neofit liner from Flow-Liner Systems into the water pipe from the curb stop to the building. The 1-inch copper pipe was completely lined in less than one day. The building and concrete floor was not disturbed. Tenants did not have to be moved and were without water for only a short period of time.

Result
The apartment complex management was very pleased with the result and relieved they didn’t have to disturb their tenants. 800/348-0020; www.flow-liner.com.

  Milk products plant seeks solution to cracks in clay pipe

Problem
A milk products transformation plant in Beauceville, Quebec, Canada was consistently dealing with offset joints, longitudinal cracks and structural wear due to acids and caustics flowing in 130 feet of 10-inch clay pipe. The plant managers were looking for a solution.

Solution
The maintenance department from the plant contacted DrainExpert in Montreal, Quebec, to reline the pipes with Formapox 301 industrial liner from Formadrain. The fiberglass/epoxy composite material rehabilitates the structure and watertightness of existing pipe, and the chemically resistant resin will prevent any wear from chemicals such as caustics and acids used in cleaning their equipment, all without any excavation or disruption in a food plant where cleanliness and aseptic operations are more than critical.

Result
The repair was done in a single day. The plant was back on track the next day after being on a scheduled shutdown. 888/337-6764; www.formadrain.com.

  Challenging lines sealed without digging or traffic disruption

Problem
After lining a series of laterals for the City of Westport, Ind., Dennis Denney of Scott Engineering found two of those liners came up short, the first by 4 feet at the end of the 100-foot liner. It was 12 feet deep, with a 90-degree bend. The second, short by 6 feet, ran under a road, had three 45-degree bends and was 80 feet to the repair site. Digging up the road or down 12 feet would be very difficult and not an option for the city. 

Solution
Denney determined a trenchless point repair, or short liner, was needed to make a continuous liner to connect with the mainline system. He chose the trenchless Lateral Point Repair System from Infrastructure Repair Systems. The custom fiberglass and felt liner was wrapped and secured on a push-pull carrier, then pushed through each of the bends in the lines of 80 and 100 feet to the repair sites. The carrier was inflated, pushing the epoxy-soaked liners in place. The epoxy cured and the gaps were covered, completely sealing the lines.

Result
By utilizing the system, Scott Engineering made each repair in one day without digging and disrupting traffic and the environment for days. They estimated the savings at over $21,000. 877/327-4216; www.irsi.net.

  Epoxy coating solves condominium complex’s slab leak issues

Problem
A luxurious condominium complex in Solana Beach, Calif., was dealing with an influx of slab leaks, which concerned the condominium’s insurance company. The facility’s homeowners’ association began researching relining options.

Solution
The association found that epoxy coating from Nu Flow Technologies was half the cost of a traditional re-pipe, and could be completed in about half the time. After the pipes were cleaned, shots of epoxy were moved through the pipe system using clean, compressed air. Technicians applied the coating to all 190 units’ potable systems. The epoxy cures and forms a protective coating that prevents slab and pinhole leaks, corrosion, rust, lead leaching and other common potable system failures.

Result
The homeowners’ association reported that there have been no slab leak issues since the project’s completion. 800/834-9597; www.nuflowtech.com.

  Inversion system ends inflow and infiltration issues

Problem
Due to I&I issues, the Dallas Area Municipal Authority (DAMA) in Shavertown, Penn., recently decided to reline its main sewers. The majority of pipes are 8 inches in diameter, and up to 400 feet in length.

Solution
The authority engaged Trelleborg Pipe Seals & Exeter Supply as their sole equipment and material supplier. The system comprised of an epros Type 3 inversion system along with impregnation, vacuum system and M300 steam unit. The inversion drum is designed to hold up to 15-inch liners, and has a capacity for more than 400 feet of 8-inch liner. The corresponding steam unit is specifically designed for sewer rehabilitation. Steam generation is fully automated to reduce fuel and water consumption. Steam is “dry” with a moisture content of 2 percent maximum, ensuring minimal water condensate during the curing process. An Epropox HC120 epoxy resin system was installed in conjunction with Drainflex Polypropylene coated liner.

Result
The final product has zero shrinkage, ensuring there is no annular gap between the host pipe and liner, preventing ground water from reentering the system at manholes and reopened lateral connections. Trelleborg technical staff provided full training and certification at DAMA’s facility and during live on-site installations. 800/626-2180; www.trelleborg.com/epros.



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