Public contracting authority: Australian Capital Territory Electricity and Water
Contractor: GHD, John Holland and Redline
Application: Raw water transfer project
DN: 1 000
The first project of its kind in Australia
The Murrumbidgee to Googong Dam pipeline project involved the construction of a new 12km pipeline, enabling the transfer of up to 125 megalitres of raw water per day to the Googong Dam via Burra Creek. Originally designed in a Sintakote steel Rubber Ring Joint (RRJ) and welded pipe system, the team of BWA opted for the innovative proposal of Saint-Gobain PAM Vinidex; becoming the first in Australia to install a ductile iron pipe system in diameters DN 1000mm.
The environmentally sensitive project focused on water quality and required measures to protect fish populations, particularly to allow migration upstream for endangered Macquarie Perch. Saint-Gobain PAM's technical department proposed relevant engineering solutions to respond to complex environmental and ecological requirements.
Analysis of the water to determinate lining
The high alumina cement lining gives perfect resistance to the abrasion of the raw water and avoids PH level increases of the raw water.
Analysis of the soil to determinate adequate coating
Saint-Gobain PAM pipes are installed without PE sleeves and the trench is back-filled with original soil.
All Pipe and fittings system products supplied were of the highest quality with Australian Standards mark and Watermark product quality certification and complied with the technical requirements of the specification.