Regency Road & Muller Road, Adelaide Rehabilitation Project
Asset Owner: South Australia Water Corporation
Project: Rehabilitation of 4,630m of existing DN600 MSCL Locking Bar Trunk Water Main
Downer PipeTech offer Pressureline as a rehabilitation process for the renewal of pressure and non pressure pipelines in water, sewer and industrial applications. This is the second project for SA Water having also completed a pilot project in Adelaide in 2007, which confirmed the suitability of the technology for the Muller Road application.
Pressureline uses PE pipe, which has an outside diameter slightly larger than the ID of the pipe to be rehabilitated. After sections of PE pipe are butt fused together to form a continuous string, the PE pipe is pulled through a reducing swage dye to temporarily reduce diameter. This allows the PE pipe to be easily pulled through the host pipe. After the PE pipe is inserted, the pulling force is removed, allowing the PE pipe to return naturally to tightly fit within the host pipe. The lined pipe results in a flow capacity close to the original pipeline performance due to the excellent flow characteristics of the PE pipe. This technology is suitable for applications ranging in diameter from 150mm up to 1500mm.
This project involved the rehabilitation of an existing DN600 MSCL locking bar trunk water pipeline and is the first project of its kind undertaken in Australia. This pipeline runs beneath one of Adelaide’s busiest roads, and utilising Pressureline technology has resulted in a significant reduction in the impact and disruption to the community and environment. This project is a good example of where Pressureline provided a cost effective solution that traditional techniques could not have delivered resulting in savings of many millions of dollars. For this project ITS built a RBS1900 wire rope unit, the largest of its kind ever made with a pulling capability of 190 tons. This project established a few world firsts in relation to Pressureline. These included the use of a SDR11 pipe and Pressureline through a number of long radius bends.
Project Profile
Regency Road & Muller Road Rehabilitation Project
The project involved the rehabilitation of 4,630m of DN600 MSCL Locking Bar water main. Approximately 4km of the pipeline was rehabilitated using the technique of Pressureline with DN594 HDPE pipe. ITS’ scope of work included:
- CCTV & internal cleaning of existing water main
- HDPE Welding
- Pressureline (Pipe Installation)
- Installation of HDPE Stub Flanges for connection to existing pipelines
- Installation of HDPE Saddles for connections of branch pipelines
The project started in July 2010 and completed in November 2010. The route ran beneath one of the busiest roads in Adelaide. ITS was able to design the pipe with to significantly reduce the insertion loads during the swage process.
Utilising Pressureline technology has resulted in significant reduction in community impacts and substantial cost savings in regards to restorations. Other key advantages include:
- Less raw material usage
- Less spoil to be removed and disposed of
- Significantly less truck movements
- Less noise and dust compared to traditional methods
- Significant reduction in time frame to complete Project
Project Highlights
- Utilisation of new state of the art installation equipment
- Pressureline installation runs of up to 600m using a heavy walled PE pipe (SDR11) which has not been done before.
- Successful Pressureline through a long radius bends
- Largest Pressureline project undertaken in Australia
- No LTIs and zero complaints
- Completed on time and on budget