In 2013 Dunstans Construction Group completed a 140m HDD crossing for the Node 4 Gas Pipeline being constructed by AJ Lucas for Arrow Energy.
As a result of successfully completing the Isaac River HDD crossing, we were awarded an additional crossing for the Node 4 pipeline. The length of the crossing was ideal for our D100 drill spread and the crossing was successfully completed within a week of mobilisation.
- HDD was selected as the preferred installation method of the gas pipeline due to the depth required to pass beneath the Carborough Downs Conveyor.
- The pipeline was installed with no interruption to the Conveyor, which is located on the Vale mine site.
- Our team delivered management plans, risk assessments and calculations as part of the design, construct and install project to assure all stakeholders that the crossing could be completed successfully.
- Arrow Energy was limited by 125m of steel pipe with the appropriate epoxy coating for HDD installation, however the Dunstans design utilised a 15m lead-in trench on the pipe side –allowing a standard coating to be used for that section of pipe.
Dunstans delivered this project ahead of time, on budget and with no time lost due to injury – satisfying all safety and quality standards.