MEL04 is a state-of-the-art data centre located in Melbourne, designed to meet the growing demand for secure, reliable digital infrastructure. The facility provides significant power capacity to support critical data operations, ensuring high levels of performance and resilience for its users.
Multiworks was responsible for delivering the civil works for the substation at MEL04, including the construction of 3 transformer bays, fencing, foundations, stormwater drainage, and overground services. The project required an accelerated schedule, with the transformer bay completed within 10 weeks of commencement, allowing for the timely delivery of the transformer to begin commissioning.
VIVA Energy initiated the Strategic Storage Project to construct four new tanks capturing 90 million litres of diesel storage as part of the Federal Government’s plans to boost Australia’s Diesel Storage Program. Multiworks, working under mechanical and tank builder Brockman Engineering, were responsible for all civil works associated with this project including bulk earthworks, remediation, tank foundations and over 1,000m of concrete in-situ bund wall over 4m in height.
Works included
- 1km bund wall over 4m in height
- Major earthworks associated with the 62,500m2 area within the bund
- Remediation of significant volumes of contaminated soils
- Tank foundations
- Concrete in-situ bund walls over 4m in height
- Footings, pits and drainage
- Roads and paving
- Construction of access ramps, bund sumps
- External roads in the ‘Greenfield’ area
The project posed multifaceted challenges, spanning tank foundations, concrete bund walls, pipe supports, and a wide range of civil works, including access ramps, drainage, and roads. The project also faced intense timeline constraints as work was required to be completed in time for the government subsidy to be obtained. Despite a significant increase in the scope, namely in contaminated soil remediation, Multiworks was able to accelerate the program by over 2 months.
Located 300km north-west of Melbourne’s CBD, the Koorangie BESS, developed by Edify Energy, will be connected to AusNet’s 220kV transmission network and provide system strength to the Murray River Renewable Energy Zone (REZ).
Our scope included the construction of foundations for the Tesla Megapack batteries, as well as the installation of associated conduits and critical infrastructure to support the 185 MW/370 MWh system. The project required meticulous coordination to meet stringent timelines, ensuring the battery foundations were completed and ready for the Tesla Megapacks to be installed on schedule. These foundations are integral to the performance of the grid-forming inverters, which will help stabilise the energy grid and increase the region’s renewable hosting capacity by up to 300 MW.
M2 Melbourne is a Tier IV certified data centre situated in Tullamarine, conveniently located near major transport and telecommunications infrastructure. Boasting 60MW of power capacity, M2 provides organizations with unparalleled levels of resilience, reliability and inter-connectivity.
Multiworks were responsible for the construction of the Datacentre Substation, involving all associated transformer bays, fencing, foundations, stormwater drainage and underground services.
Adding to the complexity of the project was the security requirements for entry, which are paramount at most Datacentres. Multiworks’ staff and all personel were responsible for ensuring no unauthorised entry to the site and adhered to stringent site rules.
The Narrabeen Substation Control building houses the live electrical switchgear and equipment that control the adjacent substation. As part of the upgrade of ageing assets, Multiworks was engaged directly by Ausgrid as Principal Contractor to replace the existing roof while maintaining the live operations of the substation and the electrical network. The works included: replacement of roof tiles with Colorbond sheets, installation of CFC sheets, replacement of gutters, installation of new downpipes, installation of earthing spires and installation of new anchor points.
Prior to commencement of the roof replacement works the Narrabeen Control Building was impacted by a storm causing leakage inside the Switch-rooms. Ausgrid engaged Multiworks to execute emergency works to stop the leakage. This required the roof replacement works to be brought forward and delivered within a significantly constrained time frame.
Multiworks effectively mobilised a skilled team including additional resources from interstate. Due to the poor condition of the existing roof, Multiworks made the entire control room building watertight through implementing anchor points and tarping. This provided a temporary shield around the whole building, eliminated any impacts due to poor weather and ensured the ongoing operation of the control room.
Multiworks delivered the project one month ahead of schedule, while also completing the Castle Cove Substation works.
Multiworks was responsible for the replacement of roof metal sheets with Colorbond sheets, replacement of gutters, installation of new downpipes, construction of stormwater inlets and installation of new anchor points. Multiworks delivered all scope while ensuring the ongoing operations of the live electrical substation.
A key challenge in the roof replacement works involved implementing appropriate physical protection over the existing Frequency Injection Units (FIUs). Due to the sensitivity of the assets and client requirement that only one FIU could be de-energised at a time, Multiworks developed and implemented a staged works program over the FIUs. Multiworks effectively planned and scheduled materials and resources to ensure protection over the unit while replacing the section of roof directly above. The protection was then stripped so that the FIUs could be re-energised.
Additionally, Multiworks developed an innovative ‘Rolling Scaffold’ within the substation that offered fall protection and acted as a physical barrier to ensure the substation equipment was not exposed to falling objects.
The Chullora Substation Control building houses the live electrical switchgear and equipment that controls the adjacent substation. As part of the upgrade of ageing assets, Multiworks was engaged as Principal Contractor directly by Ausgrid to replace the existing roof without any interruptions to the electricity network.
Works took place on the existing live control building, housing equipment for this 66kV Substation. Key scope involved ACM eave replacement, removal of roof tiles, installation of two layers of Compressed Fibre Cement sheets, installation of Colorbond sheets, reinstating existing gutters, installation of new downpipes and installation of new anchor points.
During the preliminary planning, it was noted that the height from the pitch of the roof to the soffit was greater than 0.8m. Due to the substantial height difference the existing anchor points could not be used as a means of fall arrest. As a result, Multiworks proposed and successfully implemented a construction methodology that provided a means of fall arrest utilising anchor wraps. The project achieved zero safety incidents.
The Victorian Government has mandated the rollout of Rapid Earth Fault Current Limiter (REFCL) installations across nominated Zone Substations in AusNet Services’ network, including at the Lilydale Zone Substation. Installation works included:
- Two new REFCL(s) units in bunds and footings
- Two new 22kV switched neutral bus kiosks onto new footings
- A new REFCL Room on to new pad footings to house associated inverters and control equipment
- A new modular Control Room onto new striped footings
- A new cable trench (600mm Wide x 600mm Deep) running north west to south east for associated control cables Conduits for control cables
- Associated reinstatement and surfacing
Replacement works involved:
- The existing NER with one new NER onto new pad footing
- Existing station service transformers (SSTx) with two new 750 kVA kiosk type units onto new pad footings and AC changeover boards
- Both existing Capacitor Banks with Metal enclosed Cap Banks with pad footings for REFCL compliance.
The Heywood Terminal Station (HYTS) 500 kV CB Replacement project includes establishment of two new 500 kV switch-bays to convert the incoming MOPS and TRTS line bays to a double-switched arrangement.
Multiworks was engaged by Zinfra to carry out all civil work associated with the project scope, including:
- Replacement of existing MOPS/TRTS line bay ROIs, CVTs and Surge Arresters
- Replacement of M1 and M2 transformer 500 kV Surge Arresters
- Decommissioning of 22 kV No.3 station services transformer
- Replacement of the 415 V station services infrastructure
- Installation of new 500kV Bus protection, new X & Y CBM scheme
Among other elements, Multiworks was engaged by Zinfra to construct a new 50,000L containment tank within the existing electrical substation.
Due to its size and weight, the containment tank was required to be constructed in-situ. Multiworks utilised prefabricated formwork boxes to set-out the tank and pour its 3 compartments in a singular pour.
