Lining With Pipe Segments

Published: October 31, 2017 | Last updated: July 5, 2023

What Does Lining With Pipe Segments Mean?

Lining with pipe segments is a process of trenchless rehabilitation known as sliplining. Short pipe liner segments are inserted into the old pipe to be rehabilitated through a manhole or an excavated entry point. Depending on the cross section of the existing pipeline, the lining segment are circular or non-circular in cross section. Trenchless rehabilitation methods have made it easier for repairing or upgrading old pipelines with minimum to no excavation.

Trenchlesspedia Explains Lining With Pipe Segments

Before the rehabilitation is carried out, the host pipe is cleaned out of accumulated dirt and debris. Using a closed circuit television camera (CCTV) the pipe is inspected for damage and the problem spots are noted. The liner segments are moved to the installation point. The connection is done by using a seal in a socket and aligned with the center of the host pipeline. Smaller segments can be connected manually. The material of the liner pipe can be of high density polyethylene (HDPE), polyvinyl chloride (PVC), or glass reinforced plastic (GRP). These materials are non-corrosive and abrasion resistance giving the pipes long service life.

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