SA Water tests successful trenchless pipeline repair technique

(UI) — A recent innovative repair operation has salvaged a potentially disruptive situation for businesses along Adelaide's bustling Rundle Mall. SA Water undertook a trial of trenchless technology, a first in the metropolitan sewer network, to address issues with a sewer pipe running beneath the popular trade hub.

The trenchless 'Quick-Lock' system, involving a permanent stainless steel sleeve, was the chosen method. This sleeve, transported within the sewer main to the repair point, is expanded by a small compressor, effectively lining and sealing the pipe without the need for excavation.

Dr. Daniel Hoefel, SA Water's Senior Manager of Infrastructure Planning and Strategy, emphasized the strategic selection of this trial location in the heart of Adelaide. He highlighted the importance of exploring alternative maintenance methods to minimize disruptions to the community, especially in high-traffic areas like the CBD.

The decision to employ the Quick-Lock system stemmed from proactive CCTV monitoring efforts, which detected a displacement in a 150-millimeter-diameter sewer pipe near the Gawler Place and Rundle Mall intersection. Immediate action was crucial to prevent potential collapse and further damage.

Traditionally, repairs of this nature would have necessitated disruptive excavation work in Rundle Mall. However, the trenchless approach offered a more efficient solution. By accessing a nearby sewer chamber, the repair team was able to deploy the Quick-Lock system with minimal disturbance to the surface.

Following successful trials in the metropolitan network, SA Water intends to explore further applications of the Quick-Lock system, particularly for non-invasive repairs to smaller sections of pipe. This approach not only ensures the structural integrity of the sewer network but also minimizes inconvenience to local businesses and the community.

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