Inter Laboratory Comparison of Testing Procedure of CIPP Liners According EN ISO 11296-4

One of the widely used and most popular rehabilitation technics for trenchless sewer rehabilitation is currently CIPP (Cured-in-Place-Pipes) liners. 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.