Melbourne Water $130m water pipe projects should consider PVC for renewal of Melbourne’s aging water pipe infrastructure
Melbourne Water recently announced the preferred contractors that will play a significant role in delivering its capital water projects, involving several significant water supply projects over the next five years. The projects see a significant shift away from large-infrastructure projects to a focus on renewing ageing infrastructure and maintaining an expanded asset base.
PVC pipes should be considered for water supply pipeline projects because they outperform alternative materials in performance and cost effectiveness. Their smooth bore allows high flow rates. They are corrosion proof and easy to handle, transport and install. PVC pipes have a proven track record of excellent long-term performance and offer extended, trouble free service life.
PVC pipes save water and sewer utilities substantial amounts by reducing water loss and ingress into sewer systems. Gasket joints provided with PVC pipes are manufactured and tested to perform without any leakage. The zero-leakage PVC joints enable sewer utilities to dramatically reduce wet weather inflows and avoid unnecessary treatment costs. Studies from both Australia and overseas have consistently shown that PVC pipes have the lowest failure rates of all pipe types. Similarly, water utilities have reported much lower unaccounted for water losses where systems comprised of PVC pipes.
Using trenchless PVC pipelines to rejuvenate aging water pipe infrastructure
Construction in densely populated urban settings significantly increases real construction costs while greatly impacting the indirect social costs that are associated with interruptions to the flow of traffic and obstacles to both businesses and the public.
The construction of new underground infrastructure, or the rehabilitation of old infrastructure, presents engineers and contractors with the challenge of minimising the impact of these disruptions on the surface, while making these needed improvements underground.
Trenchless technology has the advantage of minimising or eliminating excavations with the overall installation being completed using pre-drilled holes or by bursting or relining an existing pipeline. Trenchless technology also makes it possible to rehabilitate aging pipelines without digging up the entire pipe system, often restoring both the structural integrity and improving the pipeline fluid velocity, thus greatly minimising the social costs associated with the disruption to traffic, pedestrians, businesses and customers.
PVC pipes offer installers of trenchless pipelines the widest range of options in trenchless technology including fusible PVC, restraint joint, close fit liners, spiral winding and jacking pipe.