Resilience and the ability to flex are qualities Brandenburger UV liners from BurrowTech have in abundance. That has recently been demonstrated in a challenging project in Heretuanga Hastings.
A long-term Hastings District Council plan to renew sections of its Inland Wastewater Trunk network is using this leading edge, trenchless technology to minimise disruption and avoid loss of wastewater services. The first phase of the project, (2022-2028), involves renewing approximately 1.32 km of pipe.
Work began at the wastewater treatment plant in East Clive, 20 minutes out of Hastings, and is working its way back to the city.
Andrew Twentyman, Senior Project Manager at TDG Environmental has his finger on the pulse of this complex job. He says technical challenges including working with a DN900 lateral pipe, which runs perpendicular to the primary pipeline. Not unheard of, but not straightforward.
This section of the project required UV liners for 40 metres of DN900 pipe, 300 metres of DN825, and 5 metres of flexi UV liner for the section where the two pipes crossed over.
He said the tender called for issues including the bends in the pipes, dips and changes in sizes to be successfully addressed. “We said we’d find a way to do it – and BurrowTech came through.”
Andrew says progress so far has been “pretty good”. He says BurrowTech, which picked-up the job in its second year provided clarity around pricing, and a quality product delivering a long-lasting, wrinkle free finish which doesn’t reduce pipe capacity.
“We’ve had no issues with the Brandenburger UV liners – we’re found them easy to handle and I’ve had good feedback from the guys working with them.”
Fun fact: Depending on where a domestic connection to the system is, the Hastings District Council website estimates wastewater takes 3-5 hours to reach the treatment plant from the urban area.
