Internal Point Repair

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Definition - What does Internal Point Repair mean?

Internal point repair is a trenchless rehabilitation method that is used to rehabilitate sewer and water pipes internally without having to dig up the surface to access the pipe. This method is good for fixing cracks, tree root intrusions, inflow/infiltration (I/I), and fixing laterals.

Cured-in-place pipe (CIPP), sliplining, pipe bursting and thermoformed pipe are some of the other trenchless rehabilitation methods that are used to rehabilitate pipes.

Trenchlesspedia explains Internal Point Repair

Internal point repair doesn't require curing time or bypass pumping. The method increases the service life of the pipe for 50 years, provided the pipe has no other structural damage. The affected pipe is first cleaned to remove debris, tree roots and other obstructions.

The pipe is then video inspected using a closed-circuit television camera (CCTV) to pinpoint the problem area. Structural fiberglass impregnated with resin is pulled into place inside the pipe using a pneumatic packer.

Once in place, the packer inflates and positions the repair securely over the defect and allows it to set at ambient temperature.

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