ETP- WAS Capacity Upgrade
The project scope included introducing new sub-systems to the existing systems to enhance the capacity of the ETP, as well as the rehabilitation and decommissioning of its ageing assets.
Safety Focused Performance Joint Venture (SFPJV)
Fabrication
Installation
Water Utilities
Melbourne Water ETP, Bangholme, Victoria
Eastern Treatment Plant is a major metropolitan treatment facility located in Bangholme, Victoria and operated by Melbourne Water. Tankweld was subcontracted to deliver the project, which involved the fabrication and installation of many mechanical systems. This project illustrates Tankweld’s expertise across multiple platforms, such as Project Planning, Engineering Design, Workshop fabrication and on-site installation.
About the Project
The project scope included introducing new sub-systems to the existing systems to enhance the capacity of the ETP, as well as the rehabilitation and decommissioning of its ageing assets.
Some of the key project deliverables involving high-risk activities,
- Fabrication and installation of new Waste Activated Sludge (WAS), Thickened Waste Activated Sludge (TWAS) Headers, associated pipework, and decommissioning and removing obsolete headers.
- Fabrication and installation of various components associated with the Dissolved Air Flotation (DAF) process, such as saturator tanks, compressed air pipework, Air Saturated Water (ASW) and WAS pipework. This work also included Sludge Scraper conveyor systems, sludge collection troughs and pipework. Product within these large tanks is maintained at optimum levels by baffle walls and adjustable weirs, fabricated and installed by Tankweld. A structural steel platform with grating and safety handrailing partially covers one end of these tanks.
- Installation of new air compressor and associated pipework
- Mechanical rehabilitation of Dissolved Air Flotation Tanks
- Fabrication and installation of DAF Gallery Mezzanine Extension and Stairs
- Extend the existing Subnatant Pipework Header to suit the new processes.
Project Challenges
The primary challenge Tankweld faced was that ETP is a major treatment facility and had to maintain normal operations during the entire project duration. All works were planned and arranged with a minimal impact on the plant operation. Hence, it was mandatory to utilize planned shutdowns effectively and efficiently.
Apart from this primary challenge, Tankweld also had to overcome several other challenges. These included limited access to existing assets, working around live assets, working with limited access and egress space, and working on multiple work fronts simultaneously within the same project delivery time frame.
