60-YEAR-OLD RESERVOIR NEEDED A NEW LEASE OF LIFE

Across Australia and New Zealand, building owners, facility managers and water authorities face the dilemma of what to do with ageing infrastructure. Many pipes installed prior to 1980 are now approaching the end of their working life, and it’s not a matter of “if the pipe will fail” but “when the pipe will fail”.

So how do you resolve the issue of pipes that are either buried very deep, under busy roads, inside a concrete structure, or simply not able to be dug up without disturbing occupants, or for health and safety issues?

THE PROBLEM: INLET PIPE WAS BURIED IN THE ENGINEERED CONCRETE STRUCTURE

In the ACT a clever solution was needed when it came to extending the operational life of a vital piece of infrastructure.

The local water authority was undertaking a renovation of a 60-year-old water reservoir. But, they needed a solution for the large diameter inlet pipe (DN750mm) that was buried deep within the engineered concrete structure.

It wasn’t possible to replace it without destroying an important structural part of the building or potentially delaying the entire renovation for months.

The reservoir supplied water to homes, schools and businesses in the surrounding suburbs, as well as acting as a balancing tank when water was supplied from a nearby water treatment plant. As such, the solution needed to ensure that the reservoir could continue to provide drinking water to the local community safely, and to the high water quality standard required.

THE SOLUTION: PIPE RELINING WITH NUFLOW’S GREENLINE

Nuflow rehabilitated the pipe using our custom Nuflow Greenline Potable Water relining system. This smart solution utilises the Australian engineered Cured In Place Pipe (CIPP) system for rehabilitation of pressurised pipelines.

Nuflow Greenline consists of a custom manufactured liner that is impregnated with epoxy resin that is free of BPA’s and safe for drinking, and often used for large scale commercial plumbing projects. The liner is pulled into place with a bladder that is inflated, forcing the liner against the 750mm diameter concrete pipe. Once cured, the bladder is removed and a new pipe is now operational within the original pipe.

SMALL FOOTPRINT MEANT EFFICIENT ROLL OUT

This fix was far from straightforward. To access the pipe required entry via a confined space entry conditions pit which was approximately 3.5m deep.

Downstream there was a scaffold platform level, with the outlet of the pipe approximately 7 metres above the reservoir floor.

This was a delicate operation which required attention to be paid to even the smallest of details to ensure the safety of everyone on site. Any accidents could close the site and put this vital project behind schedule, which would in turn impact the local water supply.

A large part of the project involved cleaning and preparing the pipe for relining using high pressure water jets. Following the descaling of the inside of the pipe, we built a custom CIPP liner to the exact specifications of the pipe. This process took place on the scaffold platform, resulting in minimal site footprint and allowing other trades to continue to complete their work during the installation.

The installation of the CIPP liner was completed in 3 days including travel, site inductions and establishment, pipe and material preparation, and cold weather condition curing time. But, this was not the end of the project.

Nuflow Smooth Trowel, a specialised Nuflow manufactured product made with Croc Mate, was used on the upstream and downstream ends of the pipe – providing extra strength against water penetration, and assisting with extending the life of the concrete around the inlet to the pipe.

The project was finished on time, and to budget. The client was thrilled with the results delivered by the Nuflow Wollongong crew. They maintained an impeccably clean site and followed direction and safety protocol to the letter.

Nuflow has rehabilitated many pipes across Australia and New Zealand, from Super Yachts to sewers, and even award-winning historic building restorations. We can reline virtually any size, shape or material of pipe.

As the only local manufacturer of pipe relining solutions in Australia and New Zealand, we should be the first people you speak to about your pipe repairs.

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Northland residents and businesses will now have access to innovative pipe re-lining solutions that change the game in pipe repair. Nuflow, New Zealand’s leading pipe relining company, is expanding its operations with a new franchise launching in the Northland region. This expansion brings their "pipe within a pipe" technology to address the area's aging infrastructure challenges. Zane Britton, owner of the newly established Nuflow Northland franchise, brings extensive industry experience and a vision for delivering advanced pipe rehabilitation solutions to the region. "After following Nuflow's developments through industry conferences and seeing their strong market presence, I was drawn to their comprehensive range of techniques and products," says Zane. "The technology offers superior solutions for Northland's unique challenges, particularly addressing years of poor installations that have left their mark on local infrastructure." The franchise will offer Nuflow's complete suite of pipe rehabilitation services, including their well-known and well-regarded trenchless technology that minimises disruption while maximising efficiency. This no-dig approach is particularly valuable for Northland's aging pipe network, offering a modern solution to traditional plumbing problems. Zane emphasises the practical benefits of Nuflow's technology for the region: "With the significant number of aging pipes in Northland, our technology provides a cost-effective solution with reduced health and safety risks. The niche market opportunities here align perfectly with Nuflow's capabilities." The new franchise aims to service all sectors in the region, from residential to commercial and industrial clients. "Every sector can benefit from these solutions," Zane notes, "our goal is to keep delivering quality results while also training new apprentices to support the industry's future." When asked about the support received from Nuflow, Zane praised the comprehensive training program: "The support and training have been excellent, providing us with everything needed to deliver these specialised services effectively." With Nuflow’s trusted materials and up to 50-year product warranty backing their services, Northland residents and businesses can now access state-of-the-art pipe relining solutions that promise to address their infrastructure needs efficiently and effectively. Looking ahead, Zane has clear objectives: "Our vision is to continue growing while maintaining high-quality service delivery and contributing to the industry's development through apprenticeship opportunities." As Nuflow Northland commences operations, local property owners and businesses can look forward to accessing innovative pipe rehabilitation solutions that offer an alternative to traditional repair methods, backed by proven technology and comprehensive support.

Northland residents and businesses will now have access to innovative pipe re-lining solutions that change the