The coastal region of NSW is no stranger to heavy rainfall and flooding. That’s why proper drainage is a vital part of the state’s infrastructure.
When one of these critical drainage systems neared the end of its operational lifespan, TDM Pipeline Solutions (TDM PS) was called in to help.
The drainage pipe in question ran underneath a highway in a bush-choked valley – an important road for NSW inhabitants.
TDM PS Business Development Manager Calyn Wilkinson said the pipeline was old and in need of repair, with displaced joints and infiltration at multiple points along the pipe.
“It’s an important drainage system which prevents water from flooding the roadway, so it was critical to repair it efficiently and in a way that lasts,” he said.
To that end, TDM PS turned to its long-time supply partner IMPREG.
“We utilised IMPREG’s fully structural UV-cured GL16 liner at DN [diameter nominal] 900 and 8.3mm thickness,” Wilkinson said.
IMPREG is one of the world’s leading manufacturers of cured-in-place-pipe (CIPP) liner systems for UV-curing. The company’s GL16 liner was developed for all common pipes from DN 150 to 2000 for sustainable and efficient trenchless rehabilitation.
Boasting over 100 years of design life, high quality UV resins, easy installation, and extreme durability even under tough conditions, it’s not hard to see why IMPREG is one of the liner brands that TDM PS uses.
Yet despite the quality of tools in TDM PS’s kit, the relining project presented some technical challenges.
“The pipe was 5m below the level of the road, and access to both the upstream and downstream sides was 20m off the road through bushland,” Wilkinson said.
“To deliver the project, we utilised a 32-tonne crane to lower the liner equipment down to the access point.
“As we were working in a waterfall area, we also had to create a temporary dam and pump out the water to another area.”
Successful installation
Thanks to the combined ingenuity and expertise of TDM PS and IMPREG, the project was executed without any issues.
“It was a very successful installation that the client was pleased with,” Wilkinson said.
“We were able to restore the drain to its full strength and serviceability for decades to come.”
With the delivery of this latest project, TDM PS has laid more than 4km of IMPREG liner. Wilkinson said one of the best things about working with IMPREG is having direct access to the supplier, rather than dealing with a third-party distributor.
“IMPREG has a relatively fast response time, providing us with fully structural liner designs that meet the client’s criteria,” he said.
“Communication is another strength. If we’re trying to meet tight deadlines, IMPREG is always on deck to help us get what we need, when we need it.”
For IMPREG, the respect is mutual.
“We always enjoy the opportunity to work closely with TDM PS, which excels in providing solutions for difficult installations with a great end result,” IMPREG Country Manager Colin Murphy said.
With the backing of IMPREG, TDM PS is delivering high quality pipeline projects around Australia.
“We’re a solutions-based business that delivers a high standard of work,” Wilkinson said.
“Some projects might seem impossible, but there’s always a potential solution that we try and provide for our clients.”
For more information, visit impreg-australia.com
This article featured in the October edition of Trenchless Australasia.
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