Testing Regime for Fit-For-Purpose Semi-Structural and Structural Pipe Lining

Abstract

Deterioration of buried water and sewer pipes is an emerging concern among many utilities in Australia. For critical water pipes, economical methods of pipe rehabilitation, reduced replacement time resulting in minimum water interruption are priorities for water utilities. Rehabilitation of old water pipes by structural cured-in-place pipe (CIPP) and / or spray liners are a relatively new practice in Australia and recently, a number of Australian Utilities have begun trialling some of these liners in their networks. Literature review reveals that currently available standards were originally designed for sewer pipes and are missing some relevant testing required for classifying structural pipe liners for pressurised potable water pipes. This paper presents how the performance of CIPP and spray lining will be tested for development of fit-for-purpose pipe rehabilitation framework Challenges encountered from the test results were given.