Page 356 - Trenchless Technology Piping Installation and Inspection

306 Cha pte r Se v e n

(a) (b)
FIGURE 7.8 (a) and (b) Lifts (CIPP defect).

7.8 Summary
The CIPP technology can address a wide variety of pipeline prob-
lems. However, if pipe defects are not identified in the early stages
of deterioration and are allowed to cause a pipe collapse, the CIPP
technology may no longer be applicable and traditional methods of
excavation and replacement may become the only solution. The
inspection of a CIPP installation starts with a thorough knowledge of
the technical specifications for the project and a full knowledge of
CIPP technology. In order to properly inspect CIPP installations,
inspectors need to understand quality requirements of specifications.
Quality measures and possible outcomes of not meeting these quality
measures should be clearly stated in the bid documents. Owners and
engineers should have reasonable tolerances for CIPP installations
based on requirements of their projects. Unreasonable quality mea-
sures may result for contractors to submit higher bids or discourag-
ing contractors from submitting bids.