Lateral Reinstatement

Published: | Updated: May 3, 2018;

Definition - What does Lateral Reinstatement mean?

Lateral reinstatement is the reestablishment of lateral pipeline connections, particularly after the process of installing cured-in-place pipe (CIPP) lining within the lateral walls. This usually entails cutting an opening in the new pipe liner using mechanical equipment once the piping segment has sufficiently cured.

Lateral reinstatement is essential in order to restore the piping system to its normal function.

Trenchlesspedia explains Lateral Reinstatement

Once a cured-in-place pipe (CIPP) liner is installed on the inner walls of a pipe, it creates a new pipe structure within the host pipe. During the installation process, lateral connections are covered by the CIPP lining, therefore, these connections need to be re-opened to restore the connection and resume normal pipe flow.

A mechanical high-speed cutter is commonly used together with CCTV equipment to identify and cut holes in the lining. Once the CCTV camera identifies the location of the lateral connection, a rough cut is made using a router bit to create the initial opening. Once the lateral has been opened, a wire wheel opens the liner to the full required diameter without damaging the connecting pipes.

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