Barrow Island Reverse Osmosis
Ertech and Monodelphous for Chevron
Barrow Island, Western Australia, Australia
The Gorgon Project is the largest single-resource natural gas project in Australian history. Our team was engaged to develop a suitable potable and construction water supply for the project.
This resulted in design and coordination of two seawater reverse osmosis (SWRO) plants, which was carried out in two phases.
Phase 1 involved the construction and commissioning of a 1ML/d SWRO treatment plant used to supply water during enabling works and minor civil construction.
Phase 2 involved the construction and commissioning of a 2.4ML/d SWRO used to generate potable water supply for the accommodation village and to support more substantial construction.
As the project was located in a Cyclone D Region and state legislated Class ‘A’ nature reserve setting, a number of design solutions with regards to the following key aspects:
- PLC and electrical systems
- Pipework and pump systems, earthworks, stormwater drainage and footings
- Extensive ballasted undersea piping and electrical umbilical cabling (4.5km and 4km respectively)
- Two reservoirs to mitigate tidal changes and ensure constant water supply
- Offshore outfall system to discharge brine via suitable pipework and correct outlet configuration
- The project was completed on schedule and budget, with an exemplary safety record.
The project was completed on schedule and budget, with an exemplary safety record.
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