REFURBISHMENT and additional construction on the Wheatstone Ashburton West Pipeline (WAWP), a spur to the Dampier to Bunbury Natural Gas Pipeline (DBNGP) was completed on time and on budget.

Construction work on the project started in April 2014 after Duet Group subsidiary DBP Development Group (DDG) won a 30-year contract to build, own and operate WAWP in September 2013.

The project included the refurbishment of the existing 10 inch, 87 kilometre pipeline that stretches from Ashburton West to Compressor Station 2 on the DBNGP.

Duet Group then built an 87 kilometre 16 inch pipeline loop alongside the existing 10 inch pipeline and a new 22 kilometre 16 inch pipeline, connecting Ashburton West to the Wheatstone Project’s domestic gas plant.

Practical Completion of the project was achieved in late December 2014, with 123 terajoules per day of capacity available for commissioning of the Wheatstone Plant when it is required. The pipeline will also have an initial forward haul gas transmission capacity of up to 337 TJ/day when the Wheatstone Project moves into production.

The WAWP project was completed on time and below the budget cap under which DDG earns a return on capital expended, the company said in an announcement.

DDG chief executive Stuart Johnston praised the support of Chevron, the Buurabalayji Thalanyji Aboriginal Corporation, pastoral leaseholders and contractors Monadelphous and Enerflex Process, as well as state government departments, all working together on the project.

“We are very pleased to have DDG complete its first gas transmission development project in such a successful manner. We look forward to building on this initial success as we seek to provide pipeline infrastructure solutions for our customers,” he said.