Our team completed the Richlands to Sumner Tee Transmission Line Refit for Powerlink in five months. This involved undertaking the refurbishment of 15 x 110kV Double Circuit Lattice Steel Transmission Line Towers for Powerlink in the Brisbane Western Suburbs, QLD.

The project scope included minor clearing and earthworks, the installation of ground earthing systems, strengthening of foundations, design and replacement of steel members and bolts, installation of anti-climb devices and signage, surface preparation and painting of the tower, and removal of previously applied hazardous paints (including asbestos infused and lead-based) including disposal.

The tower locations had a variety of challenges including; located within the rail corridor, located within busy highway median, located adjacent to residential homes and commercial businesses. Our environmental strategy included property owner liaison, weed management, soil water management and monitoring of compliance with the project environmental plan.

Planning of the works required significant planning and consultation of a large group of stakeholders.

This work was delivered to the satisfaction of Powerlink Queensland with no environmental incidents, no quality non-conformances and no lost-time injuries.

Key Challenges:

• Environmental management
• Minor clearing and earthworks
• Ground earthing systems
• Refurbishment: strengthening of foundations, design and replacement of steel members and bolts, installation of anti-climb devices and signage, surface preparation and painting of the tower, and removal of previously applied hazardous paints (including asbestos infused and lead-based) including disposal.

Bodangora Wind Farm near Wellington, NSW comprises of 113MW (33 wind turbines) developed by Infigen Energy. The power generated by this wind farm connects to the Transgrid 132kV network via the Wellington to Beryl Transmission line and the Wind Farm Substation.

CPP designed and constructed the 33/132kV substation and delivered the line construction work, required to connect the wind farm to the Transgrid network.

KEY CHALLENGES

• The project has presented considerable challenge with hard rock being found in most foundation locations. This has required us to redesign and certify foundations at short notice and use a variety of means to excavate foundations.
• The remote location of this project has presented challenges in terms of logistic support. This led to the development of plans that considered the long lead times to deliver items as well as the capacity limitations of local suppliers.
• Clearing and Access Track Preparation
• 8km of 132kV Transmission Line Construction on concrete structures
• Testing and Commissioning

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.

Key Challenges:

• Construction of overhead lines
• Construction of underground power
• Traffic control
• Landholder and community liaison

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
• Design and installation of street-lighting
• Traffic management

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