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Frequently Asked Questions

What Is Cured-In-Place Pipe (CIPP)?

CIPP is a means of rehabilitating an existing water main using a woven polyester tube that is impregnated with liquid resin. The resin is hardened through the application of heat. Once the resin has cured it becomes a structural component which lines the internal dimensions of an existing sewer pipe, taking the form of the pipe’s interior and shape. The CIPP liner is composed of two concentric tubular plain sleeves. Its inner sleeve is coated with polyurethane, and both sleeves consist of woven polyester.

What are the various applications for CIPP?

CIPP can be used to structurally reline damaged sewer and water mains. CIPP can be used to overcome poor hydraulic performance, eliminate frequent breaks, and eliminate inflow and infiltration to existing utility mains.

What is water main swabbing?

A polyurethane foam swab is propelled through a new water main through the use of water pressure.
Swabbing is used in the commissioning of new water mains. Swabbing removes all debris within the new water main that has accumulated during construction.

What is CCTV?

CCTV (Closed Circuit Television) consists of a robot-crawler mounted camera that is connected to a monitor by a power and video transmission cable. CCTV is used to perform and record visual inspections of the inside of mains to determine the extent of main deterioration, the placement of service lateral plugging caps, and the removal of service laterals.

The CCTV video is captured onto a DVD disk for further inspection and archiving. The information contained on the disk can be analyzed at any time to determine the extent of the required rehabilitation. The information is also used for lifecycle management planning and justification for the allocation of maintenance funding.