GMW wins award


awardInnovative technology introduced by GMW to fix a siphon has been rewarded by an Australasian society for trenchless technology.

Goulburn-Murray Water has that winning feeling after taking out first place in the rehabilitation category of the Trenchless Australasia Project of the Year Awards for 2010.
GMW acting Managing Director Shane McGrath said the innovative trenchless solution implemented by the company at Serpentine Creek helped preserve the local environment and allowed an existing three metre diameter pipe to continue to supply irrigation water to farming districts west of Bendigo.
 "The award recognised this was the largest structural liner ever installed in Australia, at a 3.3-metre diameter by 30-metre length, and an innovative method of design and installation," Mr McGrath said.
It was noticed during routine maintenance checks of Serpentine Creek the siphon was degraded and in need of replacement. This was particularly challenging for GMW because no-one had attempted to line a pipe of this size before.
"The project required two sharp bends with 15-degree inclines and it was essential the project be completed in a safe and cost-effective way while preserving the local environment," Mr McGrath said.
Installation of the liner did not disrupt the function of the siphon given that it ran directly below a natural creek and 100-year-old gum tree.
The project was completed on time and under budget and the irrigation community was not affected by any disruptions.
"The traditional replacement cost for a project of this scale can be as high as $1.5 million, but with this innovative solution, the project cost was reduced to $0.54 million," Mr McGrath said.
The Australasian Society for Trenchless Technology promotes the science and practice of trenchless technology for public benefit and provides a public forum for interchange of knowledge and skills within Australia, New Zealand and throughout the world.


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