Pump station wins top engineering award for Cairns

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3 November 2017

GHD and Cairns Regional Council have won Cairns Regional Engineering Awards Project of the Year 2017 from Engineers Australia for the upgrade of the Deep Creek Sewage Pump Station.

According to the judges, the project has set a new benchmark in wet well rehabilitation.

This major pump station serves the Northern Beaches suburbs of Cairns. After 25 years of operation, its internal structure had deteriorated to the point that a major refurbishment was required to save this valuable Council asset. The pump station also required a general upgrade to cater for the next 25 years of population growth.

Simon Wood, GHD’s Design Manager, says, “Sewage pump stations are hidden from sight and sometimes taken for granted, but they are some of the most complex engineering projects. Developing a design that is constructible with a major focus on safety is a huge achievement for the entire project team.”

Due to the location of the pump station, it was not feasible to replace the facility with a new pump station. Instead, GHD and the Council developed a design approach to reconstruct this critical asset, while overhauling all of its systems: pumps, controls, electrical, pipework and odour systems.

The damaged surfaces were removed using high-pressure hydro demolition equipment and reinstated with corrosion-resistant lining.

To enable the pump station to be taken offline for the remedial works, GHD designed a semi-permanent bypass system that would limit the risk of a sewage overflow. The design team also developed systems to measure the materials being applied to the walls in order to achieve the correct thickness.

The project was completed on time and on budget, extending the operating life of this critical pump station facility and catering for future population growth. The refurbished facility decreases the sewer retention time, resulting in less odour generation, and includes an additional semi-permanent bypass system that can be utilised in future asset condition assessments.

 

Our team accepting the award

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