The North Georges River Submain (NGRS) is a 2.5 metre diameter concrete sewer that runs from the Sydney suburbs of Landsdowne in the West to Arncliffe in the East. The world’s largest spirally wound pipe, produced as part of the NGRS sewer rehabilitation project, has been recognised for its engineering excellence and innovative design by being selected for display by the Powerhouse Museum in Sydney. Interflow’s display features a video presentation, animation and interactive model and demonstrates the technology used in producing the world’s largest spiral wound pipe.

“Interflow is proud to have had its project selected by the Powerhouse Museum and to bring Trenchless Technology to a mainstream public forum. We hope that some of the 500,000 visitors that enter the museum each year will be interested by this example of a trenchless solution to a public infrastructure project. Hopefully this exposure will be beneficial for our industry,” said Director of Products and Technical Services Ian Bateman.

The video details the North Georges River Submain project (NGRS), which involved installing a 633 metre long liner, 2.4 metres in diameter and weighing almost 100 tonnes. Interflow completed the project by producing an in-situ pipe by spirally winding a composite plastic strip at a fixed diameter within the host pipe – in live flow.

The record installation of the pipe is a significant innovation for the trenchless sewer renewal industry not only because of the feat itself but also for the fact that it has opened up the potential for creating very long pipelines from a single location, whether it be for pipe relining, tunnel boring or another similar application. Interflow has plans to build on this platform and explore further opportunities.

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The display is open to the public until January 2011.