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Primus Line resuscitates ageing pressure pipelines

A 1.1 km Primus Liner on a single compact spool.

Kilometres of ageing water and pressure sewer pipelines across Australia and New Zealand are in need of renewal.

Until recently, some of the more challenging pipelines have left asset owners scratching their heads and in need of a practical, affordable, long-term solution. 

Primus Line, a flexible liner reinforced with aramid fabric, is getting buzz for all the right reasons. The tried and tested lining technology provides a practical, high-quality lining solution for ageing pressure pipelines that is both environmentally friendly and cost-effective. 

Project Manager at Interflow Fergus Meyer understands the challenges many asset owners face when tackling the problem of ageing infrastructure. 

“A lot of projects have been sitting in too hard baskets for years, waiting for the right technology and delivery partner to come along,” he says. 

“Environmental constraints, budget limitations and delivery risk are all factors that can stop a project getting off the ground.

“The key is engaging suppliers early and coming up with solutions together. So is keeping an open mind to alternate proposals at the time of tender. This can really open the door to affordable, and eco-friendly solutions, like Primus Line.” 

Interflow has partnered with Primus Line to provide the innovative system to the Australian and New Zealand market. Leveraging their five-year exclusivity agreement, the two companies have made a significant impact throughout the year, rehabilitating some of Australia and New Zealand’s most challenging pressure pipelines. 

Primus Line in action
Earlier in 2022, Interflow was given the challenge of rehabilitating a deteriorating section of steel water pipe supplying the remote mining town of Paraburdoo, Western Australia. 

The pipeline runs through an area of environmental and cultural significance, so a non-invasive solution was needed. Using Primus Line, Interflow relined a kilometre of watermain in a single pull, meaning no digging or disturbance along the alignment. 

The project took just over a week and only a single truck was needed to transport the spool of liner and associated fittings – a significant benefit when the nearest major city is 1500 km away. 

More recently, Interflow used Primus Line to rehabilitate and recommission two out of service sewer mains in Sydney’s Inner West. Limited access to the alignment and the presence of both vertical and horizontal bends ruled out conventional solutions like slip lining and pipe bursting. 

Primus Line handles bends up to 45 degrees with ease making it the ideal candidate for the job. Interflow returned the two mains to service with minimal disruption to the busy residential and commercial community.

One of Interflow’s more challenging projects in 2022 involved 1.4 km of pipeline that transports raw water from a dam to a nearby town. Located deep within a state park and traversing steep and rocky terrain, replacing the pipeline would have been a costly exercise with unacceptable risk to the environment.

The rugged location left little access to the alignment of the pipe. Having access only to the ends of the line, Primus Line was installed in one continuous pull. This marked the longest single pull of Primus Line in Australia to date and opens the opportunity for longer pulls of a similar nature in the future.

The project was recently recognised as the winner of an Infrastructure Project Innovation award from the Australian Water Association in Victoria.

Primus Line installation in progress.
Primus Line installation in progress.

Ready to support your future needs
There is a growing need for asset owners to look for innovative ways to address issues like rising costs, resource availability and the need to support net zero targets.

As Interflow moves towards 2023 and beyond, innovative technology like Primus Line presents an exciting opportunity for the water industry to overcome these issues and extend the life of ageing infrastructure for decades to come. 

With local supply right here in Australia, Interflow is ready to support high priority projects without supply-chain setbacks. Speak to them today about your pipeline infrastructure problems.

For more information visit Interflow.

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This article appeared in the December edition of Trenchless Australasia. Access the digital copy of the magazine here.

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