Testing has been considered as an integral part in the quality control of cured‐in‐place pipe (CIPP) products and services. Concerns over the validation of product installation and the projected design life of materials have been growing since the acceptance of CIPP in the pipe rehabilitation industry. CIPP liners must meet the requirements stipulated by the international standards organization American Society for Testing and Materials (ASTM) International.
The increasing demand for quality CIPP products and services created opportunities for independent third party testing laboratories. In Australia, testing facilities must undergo a comprehensive process to achieve accreditation by the National Association of Testing Authorities (NATA). Some of the tests to be conducted by testing laboratories in the CIPP industry include water tightness, tensile tests and liner thickness. The reasons behind the success of testing labs include the ability to perform quality testing, address and overcome revisions in the standards and work with customers on common issues.
A study has been recently published which stresses the importance of developing a protocol for evaluating CIPP used in municipal gravity sewers. The study “A Retrospective Evaluation of Cured‐in‐Place Pipe (CIPP) Used in Municipal Gravity Sewers” by Erez Allouche et. al. aims to draw attention to the need of retrospective evaluation of pipe rehabilitation systems. The study recommends to extend the retrospective evaluation program to cover the following activities:
● Additional retrieval of CIPP sample in cities
● Pilot studies of sewer rehabilitation technologies
● Encourage sewer agencies to obtain material‐test data for future comparison
● Development and calibration of non‐destructive methods
● Conduct a broader survey capturing locally interpreted data on the experiences of cities with rehabilitation technologies
According to the study, an effective evaluation process has the potential to become a driver for achieving excellence among vendors of CIPP products.