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Our works

KAWANA SEWAGE TREATMENT PLANT K150 UPGRADE PROJECT

WARANA, QLD | MONADELPHOUS / ACCIONA (UNITYWATER)

$80M ($2.2M) | MAY 2019 - APR 2020

A key sewage treatment facility in Unitywater’s service area, this major upgrade has not only expanded the plant’s capacity but incorporates Unitywater’s first waste-to-energy facility. Allstar was engaged to provide mechanical, electrical and civil scope for the new plant that incorporates sewage treatment technology meaning the current site can accommodate a larger plant as it expands over the long term.

Allstar Kawana Project

OUR SCOPE:

  • Installation and commissioning of structural pipe support, mechanical equipment, pipework, gantry crane rail and crane

  • Bulk earthworks and deep excavations

  • Installation of sheet piles, dewatering spear system, sheet pile and bracing shoring systems

  • Excavate, supply, install and backfill concrete precast electrical pits

  • Installation of electrical conduits, polythene (PE) and DICL pipe sewer and watermain/s (50mm up to 600mm dia.)

  • Construction of concrete structures including two (2) large pump station pits (8m W x 12m L x 4.5m H) slabs, footings, retaining walls, concrete footpaths and kerbs

HIGHLIGHTS/CHALLENGES:

  • Working within brownfield areas with unknown below ground services due to zero as-constructed records

  • Excavating around above ground infrastructure

  • Mass concrete pours up to 40m³ plus

  • Works safely delivered in parallel with other contractors (SIMOPS)

  • ZERO asset strikes

  • Challenged design to create less intensive work methodologies

  • Use of demolition robot to minimise personal entering confined space environments

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