Quality Assurance of CIPP Liners According EN ISO 11296-4

Using Cured-in-Place-Pipes for sewer renovation has developed to a common and widely used trenchless technology for pipes and especially sewer rehabilitation in different countries in last 20 years. This process was accelerated with the standardization of the CIPP liners and also due to intensive quality assurance which is highly developed especially in Germany. The quality control and quality assurance is generally ruled according EN ISO 11296-4 which is not fully sufficient as our research has shown.