Page 327 - Trenchless Technology Piping Installation and Inspection

Possible CIPP Impact Protruding service connections should be cut back to within ½-in. to 1-in. of the pipeline pipe wall before installing the CIPP. Lining over a long protruding connection may be possible however this will create a significant protrusion in the CIPP which may cause a blockage. All significantly

Construction Defects (see Fig. 7.3) a CIPP.

Defect Description A protruding connection or hammer tap is a service connection installed, by a plumber into the main pipeline, usually by breaking a hole in the mainline and inserting the lateral pipe. Joint seal material between two pipe sections has become loose and is protruding into the pipeline pipe. T

Defect Type Protruding service connections (hammer tap) Intruding joint seal Pipe shape change Pipe material change Pipe alignment change Source: NASSCO TABLE 7.5

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