Situation
In late 2017, Urban Utilities began investigations to rehabilitate a DN 600 GRP water pipe at Redbank Plains to supply a nearby reservoir. The utility identified a 1.8 km section of pipe to be renewed which had two scour valves, two air valves and two 45-degree bends (DICL) with r = 3 x D.
Urban Utilities opted to use trenchless technology to minimise disruption to the community and the environment, as the pipe ran through a residential area and a park. The utility also identified relining can be faster and more cost-effective than traditional open trench replacement.
