Cleveland Bay Purification Plant Outfall

Scope of work

Background:

The Cleveland Bay Purification Plant treats a large portion of Townsville’s wastewater, covering approximately 70% of the population. The plant required a major upgrade to handle current and future wet weather flow rates and to meet industry standards for discharge quality. The Cleveland Bay area is a conservation park zone and home to significant species including dugong, marine turtles, dolphins and hump back whales.
The existing concrete outfall pipeline had deteriorated beyond its useful life and Pacific Marine Group were engaged during an early tender involvement phase to provide planning advice to minimise the environmental impacts in the marine park due to the outfall construction and plant bypass.

Project Brief:

Replace the 240m marine outfall pipeline during the six month period allowed under the environmental permit for the plant bypass.

Description of Works by PMG:
  • Remove and dispose of existing concrete pipeline and supporting structure
  • Delivery of free issue pre-cast concrete and piping items by barge
  • Pitch and drive 72 prestressed octagonal concrete piles
  • Install 18 precast concrete headstocks including insitu reinforcing and concrete pours
  • Place 36 precast pedestals and 18 lengths of 1200dia RRJ Sintakote® piping from chainage 500 to 740
  • Installation of navigation marker
  • Works completed 9 weeks ahead of schedule

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Client
Monadelphous

Time
April 2018 – August 2018

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