SA Water’s $4.7 million upgrade to the Bolivar Wastewater Treatment Plant’s anaerobic digesters has passed a major milestone, with a 115-tonne steel cover of one of the digesters craned off the structure by a 350-tonne crane – one of the largest crane lifts in the utility’s history.
For over a decade, WGA has been assisting SA Water with heavy lift works to safely remove tank roof structures from numerous sites across SA as part of an upgrade program. In the largest lift to date, our team assisted Tonkin and Fulton Hogan to design, plan and facilitate the removal of the 1960’s 30m diameter floating roof structure.
Presenting two lift options, the team opted for a single crane, 8-point lift, utilising local service company MAX Cranes and their Liebherr LR1350-1 350T crawler crane.
Drawing upon local crane knowledge and expertise of complex lifts, WGA selected the most cost-effective solution that considered crane mobilisation/demobilisation for the site, while also reducing the imparted ground bearing pressures to accommodate underground services in the area.
With safety at the forefront, a structural analysis of the roof structure was undertaken prior to ensure the structural integrity of the roof would withstand loads imparted during the lifting sequence.
The lift was successfully completed as planned, allowing for planned maintenance to occur safely without the need for confined space entry.
This upgrade of Bolivar’s digesters will improve their performance by enhancing insulation to the covers and ensuring an optimal internal environment for the digestion process.
The Bolivar WWTP Crane Lift is included in the following sectors & services.
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