Water Journal : Water Journal September 2012-1
feature article feature articles 48 SEPTEMBER 2012 water one-megawatt high-voltage pumps capable of transferring up to 100 million litres of water per day (or the equivalent of 40 Olympic size swimming pools) from the Happy Valley clear water storage to the northern suburbs via Wattle Park. "Back to the future" technology was also used, with the installation of flywheels on the pumps as surge protection for the eastern pipeline. As surge is usually caused through power failure, the project team also implemented a further safeguard against power failure occurring by installing three independent power supplies to the site. The 19th century flywheel technology has been brought into the 21st century with high-tech controls, and has enabled SA Water to avoid the need for large, silo-like surge vessels external to the building. No Surprises To manage community concern the NSISP set noise targets for the new pump and valve stations well below standard industry practice. The project's acoustic engineers were given the challenge of making these buildings as quiet as possible, resulting in advanced levels of acoustic attenuation being installed. Two additional capital investment projects were brought forward to minimise long-term impact on the local community. These included the refurbishment of the Wattle Park Reservoir and the replacement of the low level trunk main through Glen Osmond and Beaumont. Based on feedback from the community it was considered appropriate to proceed and avoid the need to return to the area in two years' time. To date the NSISP project has delivered a large amount of infrastructure in a relatively short time frame; however, there are still further works to complete before the end of 2012. These include finalising the construction of some pipelines and pump stations, as well as a range of ancillary works across the metropolitan Adelaide water supply network. The NSISP remains on track for completion on time and on budget in late 2012 with network integration to be completed in 2013. The work has been delivered while working collaboratively with the community and striving to deliver the 'no surprises' mantra of the project team. Project Management Approach In order for SA Water to deliver community engagement requirements, the project team was required to challenge the usual approach for delivery of large infrastructure projects and develop a new model and team structure. SA Water brought together an integrated project team to design and implement the NSISP, combining the expertise of its own team members, the Waterlink Joint Venture, and other specialists as required. The construction contracting strategy was tailored to focus on locally based tier two contractors. This enabled SA Water to invest in developing and retaining skilled workers within the state and provide support to growing second tier local South Australian businesses. The mid-tier contracting firms that partnered with SA Water included Guidera O'Connor, York Civil, Leed Engineering and SAGE Automation. Over 3,500 predominantly local, highly skilled individuals have contributed to the project, with an average workforce of 450 employed during construction at any one time. The complexity of work has provided skill development opportunities and has allowed local businesses to expand their horizons, tackling challenges of a scale and nature they haven't experienced before. The commitment to stakeholder engagement has seen the contractors work closely with local residents to manage works around the community requirements. Some examples of stakeholder considerations include finishing works early, or stopping works so as not to impact on a special event such as an open home inspection, an auction or a family birthday; resealing a section of road to ensure residential driveway access for a wedding; and providing an elderly resident with transport to a regular appointment while works blocked their driveway access. The community in turn has expressed appreciation for the considerate approach of the works crews, with many receiving coffee and cake as thanks for doing a good job by local businesses and residents. Adelaide Desalination Plant can supply water to all of metropolitan Adelaide through the NSISP network.
Water Journal November 2012-1
Water Journal August 2012