The Woolgoolga contract was a highway upgrade for the RMS in consortium with Laing O’Rourke, who were the Principle Contractor. The works were broken into various conflicts over a section of 55km of the Pacific Highway from Woolgoolga to Ballina.
Our section was from Yamba to Broadwater and consisted of seven conflicts.
There were two sections of 66kV line that required upgrading. The first at Yamba Road required that the overhead power line be relocated to underground power supply, due to the new bridge to be built crossing the Grafton River needed to be significantly higher than the existing bridge.
Under boring was required to install an envelope pipe with trefoil cable conduits to be installed for each phase, as well as a spare for future. The other five conflicts were on the 11kV distribution feeders.
Traffic control was used on a regular basis due to the work being located on the existing Pacific Highway.
Our team successfully completed the Moree Bypass HV Conflict Area Relocations and street-Lighting for Roads and Maritime and Hazel Bros. This involved the design and installation of high voltage overhead and underground infrastructure and street-lighting for the Moree Bypass.
Work on the distribution network was carried out under outage arrangements with our authorized linesperson as the access recipients. The works required extensive traffic management and working harmoniously with other subcontractors in a confined work site.
The project was delivered without quality non-conformances, environmental incidents or lost time injuries.
Key Challenges:
Design and installation of high voltage overhead and underground infrastructure
This project was to refurbish and gain life extension of key assets for Powerlink on the Mackay Transmission Line. This involved the tower refurbishment of 132kV transmission line towers in the Mackay area, Queensland.
The work included the installation of ground earthing systems, strengthening of foundations, replacement of steel members and bolts, replacement of line fittings, installation of anti-climb devices and the surface preparation and painting of the whole tower.
The terrain varied from steep bush areas to low lying crops. We had an environmental team managing our environmental strategy including property owner liaison, weed management, soil and water management.
Due to the need to remove the overhead earth wire (OHEW) and conductors during the replacement of critical steel members, extensive engineering analysis of the tower stability was undertaken when developing Safe Work Method Statements.
Key Challenges:
Ground earthing systems, strengthening of foundations
Replacement of steel members and bolts
Replacement of line fittings, installation of anti-climb devices and the surface preparation and painting of the whole tower
The Nyngan Solar Plant or Farm is the largest operating Solar Plant in Australia. At the time of construction, it was the largest solar plant in the southern hemisphere. The Nyngan Solar Plant is located on an agricultural property approximately 10 kilometres west of the Nyngan township. The solar plant occupies approximately 250 hectares of land to the north of the Barrier Highway.
The project involved the construction of a 102 MW solar photovoltaic (PV) power plant 15 kilometres west of the Nyngan Power Station.
The Nyngan Solar Farm construction involved:
The design, supply, installation and construction of the connection works comprising:
132kV Essential Energy (EE) switchyard including primary plant, secondary equipment and civil works
132kV/33kV AGL transformer yard including primary and secondary equipment
132kV EE dual-circuit overhead line (approximately 3.0 km in length)
Cut in to existing EE 132kV transmission line between Nyngan and Cobar
Control and SCADA interfaces between AGL Transformer Yard and EE Switchyard
These projects were commissioned to create grid connection for four solar farms in various locations across New South Wales. We provided the design and construction services for all aspects of the solar farms from the point of the solar farm feeders back to the utility’s nominated point of connection.
Design four grid connections including 3 MV delivery stations and 1 MV substation covering civil, primary, secondary and overhead line designs at Dubbo, Narromine, Griffith and Parkes.
These projects included the design, construction and commissioning of:Dubbo 15MW – An 11kV RMU, 11kV switchboard in outdoor enclosure, with associated control, protection and SCADA panels and approximately 2km of 11kV cabling back to Essential Energy zone substation.
Narromine 9.9MW – A 22kV switchboard in outdoor enclosure with associated control, protection and SCADA panels, 22kV overhead line connection to Essential Energy including installation of two reclosers
Griffith 30MW – A 33kV switchboard in outdoor enclosure with associated control, protection and SCADA panels, 33kV underground cable connection approximately 600m to TransGrid substation
Parkes 55MW – A 33/66kV substation including MV switchboard, portable control building, 33/66kV 55MVA transformer, VT’s, Live Tank CB and 1.5km of 66kV underground cable to TransGrid substation
CPP was single-sourced by TransGrid to deliver an accelerated program for the combination of the works on the Finley Solar Farm Connection Project and Darlington Point Solar Farm Connection Project. This was a D&C contract to install one ABB type AMS 1400LH 4L BS brushless synchronous condenser for Finley Solar Farm Project and two ABB type AMS 1250LK 4A BST brushless synchronous condenser for Darlington Point Solar Farm Project, both to be installed at Buronga Switching Station in western New South Wales.
Separate Portion 1 Scope of works included.
The design and engineering, supply, construction, management, testing and commissioning of the Buronga Switching station works for Finley Synchronous Condenser including general site fencing, security and lighting and all civil works including foundations, bunding, oil containment system, trenches, conduits, cable supports, drainage, etc. for all items to be installed as part of this project (both Customer supplied, and Contractor supplied)
The design and engineering, supply, construction, management, testing and commissioning of a new 220kV Switch bay and 220kV busbar extension.
Unload, construction, management, installation of one Synchronous Condenser, one demountable Switch room, one transformer, one auxiliary transformer, main terminal boxes, one oil lubrication unit, including tanks and cooling, one pony motor, one condenser control panel, 11kV generator circuit breaker, one motor control centre, auxiliary AC and DC power supply and associated secondary systems building, which is supplied by the Customer.
Under OEM Supervision unload and install all Customer supplied equipment and associated HV connections.
Design, supply, construct, install, test, and commissioning of all interconnecting LV cabling and wiring and terminations.
Design, supply, construction, installation, testing and commissioning of all secondary system including protection, control, metering, communications, SCADA, LV cabling and equipment required for the 220kV switch bay and 220kV busbar extension and interface with AEMO and Synchronous Condenser System.
Design, supply, construction, installation, testing and commissioning of all earthing of the new works and all the equipment installed.
Installation of sunshade for Lube Oil unit, Terminal box and Synchronous Condenser bearings.
Oversee site testing and commissioning of the overall Synchronous Condenser Works which will be completed by the equipment OEM.
Coordination of required network outage.
Design, supply, construction, installation, testing and commissioning of all temporary construction facilities and tools, including cranes, tools, scaffolding, site amenities, etc.
All works completed in accordance with this specification and TransGrid SDM and SCM.
Separate Portion 2
The design and engineering, supply, construction, management, testing and commissioning of the Buronga Switching station bench extension. including general site fencing, security and lighting and all civil works including foundations, bunding, oil containment system, trenches, conduits, cable supports, drainage.
The design and engineering, supply, construction, management, testing and commissioning of a new 220kV Switch bay and 220kV busbar extension.
Under OEM Supervision, Unload, construction, management, installation, testing and commissioning of two Synchronous Condensers, one demountable Switch room, one transformer, one auxiliary transformer, two main terminal boxes, two oil lubrication units, including tanks and cooling, two pony motors, two condenser control panels, two 11kV generator circuit breaker, two motor control centre, auxiliary AC and DC power supply and associated secondary systems building, which is supplied by the Customer
Unload and install all Customer supplied equipment and associated HV connections under their supervision.
Design, supply, construct, install, test and commissioning of all interconnecting LV cabling and wiring and terminations.
Design, supply, construction, installation, testing and commissioning of all secondary system including protection, control, metering, communications, SCADA, LV cabling and equipment required for the 220kV switch bay and 220kV busbar extension and interface with AEMO and Synchronous Condenser System.
Design, supply, construction, installation, testing and commissioning of all earthing for the bench extension and all the equipment installed.
Design, supply, construction, installation, testing and commissioning of sunshade for Lube Oil unit, Terminal box and Synchronous Condenser bearings.
Site testing and commissioning of the overall Synchronous Condenser completed under supervision of the equipment OEM.
Coordination of required network outages.
Design, supply, construction, installation, testing and commissioning of all temporary construction facilities and tools, including cranes, tools, scaffolding, site amenities, etc.
All works were completed in accordance with this specification and TransGrid SDM and SCM.
