Project Overview:
The three packages/pipelines to be installed included:
- Project 7: Salisbury Avenue watermain – a 500 metre DN315 pipeline, located in the eastern road verge of Salisbury Avenue between Elizabeth Drive and 26-32 Salisbury Avenue.
- Project 8: Clifton Avenue watermain – a 1400 metre DN400 pipeline, located in the western road verge of Clifton Avenue from Elizabeth Drive to 90 Clifton Avenue.
- Project 9: Clifton Avenue to Mamre Road watermain – a 400 metre DN315 pipeline, located within an existing Sydney Water easement under Kemps Creek and in the road verge of Clifton Avenue and Mamre Road.
Project Description:
Quickway where engaged under Sydney Water’s NEC4 Engineering and Construction Contract for the installation of drinking water pipelines to service growth in the WSAGA (Western Sydney Aerotropolis Growth Area) and WSA (Western Sydney Airport). Quickway self-performed circa 90% of the works ourselves, including trenching and pipeline construction, hydrant/valve installation, traffic planning and control, and hydro testing (flushing) of pipelines. The scope of works included the construction of the following:
- Potholing to identify services and prove proposed alignment of pipeline.
- Traffic management for all the works
- Installing environmental and safety measures
- Excavating trenches, including stockpiling of spoil material on the upslope, shoring, and dewatering trenches, depending upon trench depth and groundwater levels, installing pipelines
- Pipe welding
- Backfilling the trench with bedding material and excavated soil, compacting trench fill material
- Installing ancillary structures including stop valves and pits, restoring areas disturbed by the construction works.
- Pressure/leakage testing on the pipelines, disinfection of pipelines, testing and commissioning for all modes of operation.
- Temporary Works Design and/or Geotech sign-off for deep excavations
- Reinstatement and restoration following completion of the works.
Key Challenges/Highlights:
- Quickway provided the full-time resources required to manage the project successfully.
- Excellent safety record and no LTI’s on the project.
- The project was completed within schedule/program, ahead of the 30th of June deadline.
- Project delivery was mainly for night works, to avoid impact to the community and traffic flows. This was successful, and without incident.
- Working adjacent to live traffic with a short construction window per shift while working outside of normal work hours.
- Quickway Traffic Team managed all the traffic plans and supplied Traffic Control for the delivery of the whole project.
- The entire pipeline network successfully passed compliance testing defect-free and handed over to our client.
- Worked collaboratively worked with Sydney Water WRDT to ensure the project was delivered successfully, and to the satisfaction of the Client.