Although a quiet year in the development of new water pipelines, there has been strong water pipeline construction along the east coast.
The Australian Pipeliner provides an update on a significant project to ensure supply of drinking water to Melbourne’s western suburbs, along with two milestone projects set to change Queensland’s water supply and additional water pipelines in New South Wales.
Ensuring water supply for Melbourne’s West
In response to increasing demand for drinking water in Melbourne’s rapidly-growing western suburbs, Melbourne Water is constructing a new water supply main that will transfer water from St Albans reservoir to the Cowies Hill reservoir in Tarneit, Victoria.
Following an open-market tender process in August and September 2014, the lump-sum construction contract for the St Albans to Werribee water pipeline was awarded to John Holland on 3 October 2014.
The Melbourne Water and John Holland project team mobilised to the project site offices in early December 2014, with some preliminary activities set to commence prior to the end of the year, including surveying, temporary fencing and pipe stringing. Construction activities, including clear and grade, trenching, pipe laying and burying were to commence early in the new year (mid-January), while commissioning is still on schedule for mid to late 2015.
Melbourne Water Senior Project Manager Peter Clark said the commencement of construction is an important milestone for the project that will ultimately improve the reliability of water supplies in Melbourne’s rapidly developing Wyndham region.
The watermain will consist of 15.2 km of larger diameter pipeline – 1,150 mm concrete lined mild steel and 1,200 mm fibre reinforced plastic (FRP) – and 2.2 km of 750 mm diameter concrete lined mild steel, and will supply an additional water source to the cities of Brimbank, Melton and Wyndham, to accommodate the increasing number of residents within Melbourne’s outer western suburbs.
The Water for a Growing West project has involved extensive feasibility studies and stakeholder engagement, as well as careful planning to mitigate construction impact on the culturally and environmentally fragile terrain that the pipeline will cross.
QCLNG pipe project celebrates pipe laying milestone
In August 2014, Murphy Pipe and Civil crews working on the Queensland Curtis LNG (QCLNG) Project celebrated a major milestone after welding and installing 3,000 km of PE100 pipe across southern Queensland.
Hundreds of the company’s work crews had been installing up to 240 km of PE100 pipe a month to construct the natural gas and water gathering network that connects QGC’s wells and Field Compressor Stations to feed the QCLNG Project.
When completed, the network will span about 4,700km and be the largest of its kind in Australia.
Murphy Pipe and Civil Managing Director Jim Campbell said reaching 3,000 km was a significant milestone and praised the crews for their huge effort.
“It’s been an all-encompassing project for our crews, who have performed about 200,000 welds, laid more than 180,000 pipe lengths and fully tested and commissioned well over 50 per cent of the pipe network,” he said.
Mr Campbell said pipe crews had employed a combination of conventional trench and bury methods using excavators, and a fleet of innovative Spiderploughs, which feed PE100 pipe into the ground, where ground conditions make it possible.
BG Group subsidiary QGC is developing an onshore CSG-to-LNG production and export facility on the Queensland coast, including a 340 km, 1,066.8 mm export pipeline from Wandoan in the Surat Basin to north-east of Gladstone.
$A20 million Daandine Expansion contract awarded
The Clough AMEC joint venture has been awarded an $A20 million engineering, procurement and construction management (EPCM) contract for Arrow Energy’s Daandine Project expansion in south-east Queensland.
The expansion involves the installation of additional well facilities and new gas and water gathering pipelines in the Daandine field, located in Queensland’s Surat Basin.
The contract scope includes the expansion of the existing central gas processing facility with three new reciprocating gas-driven compressors and associated process and utility plant, increasing the current total wells in the Daandine gas field by 22.
Production will also be increased by modifications to existing infrastructure and the installation of additional infrastructure.
The contract is set to run to the end of 2015.
Arrow Energy owns 100 per cent equity interest in the Daandine Project.
New South Wales water pipeline progress
Construction has finished on the 39 km Macquarie River to Orange Water Pipeline in New South Wales, with commissioning underway.
The pipeline was approved by the NSW Department of Planning and Infrastructure in June 2013 before being granted approval from federal environmental authorities in August 2013.
The pipeline is now due to be turned on in the first quarter of 2015.
Another development in the state was the completion of the 27 km Split Rock Dam to Barraba Water Treatment Plant Pipeline.
Construction was completed in early 2014 by construction contractor Leed Engineering and Construction P/L.
This article was featured in the February 2015 edition of The Australian Pipeliner.
If you have news you would like featured in The Australian Pipeliner contact Managing Editor David Convery at email@example.com