Power and Transmission
We have been providing integrated engineering, construction, commissioning and maintenance services to the power, transmission and electricity distribution markets for more than 50 years.
The size, experience and global reach of the Downer Group, allows us to offer services throughout the whole life cycle of our clients’ power and transmission assets, ranging from design and planning through to operation and maintenance in the following areas:
- Generation
- Transmission lines
- Substations
- Distribution
- Renewables
The generation services we provide include:
- Turnkey solutions for gas combustion, steam turbine and biomass fired co-generation plants
- Fuel-fire boilers such as gas-fired and coal-fired units as well as biomass (green waste) fired boilers
- Design, build and maintenance services for power stations and power plant auxiliary systems
- Upgrading, life extension and efficiency improvements for power stations
- Long-term maintenance solutions
- Process and system design, engineering and plant upgrade services
- Balance of plant installation and commissioning
Our transmission expertise includes:
- Lattice tower and steel pole design, fabrication and construction for self-supported and guyed types
- Foundation design, detailing, condition assessment and remedial works
- Geotechnical, feasibility and environmental impact studies and surveys
- Transmission line assessments, tower analysis and present strength assessments, upgrades and repairs
- Optical-fibre ground wire retrofit and tower modifications
Our substation capabilities include:
- Civil and electrical design, plan, build, test, commission and maintenance
- Complete turnkey solutions (greenfield and brownfield)
- Electrical power, protection, earthing and metering systems, including programmable logic controllers (PLC), supervisory control and data acquisition, telemetry and controls
Our distribution capabilities include:
- Installation and maintenance of ‘live line’ works
- Street lighting installation and maintenance
- Power and services relocations for utilities and authorities
- Design, build and maintenance of industrial and commercial installations for electrical, instrumentation and mechanical services
Our key capabilities include:
Design & Consulting
- Analysis of ground and tower clearance problems
- Cable system design and specification
- Civil and structural design
- Condensers and feedwater heaters/deaerators
- Control and electrical systems
- Earth grid design and installation
- Fabrication data for conductors, insulators, fittings and fixtures
- Feasibility studies and surveys
- Foundation design, detailing and condition assessment
- Geotechnical impact studies and surveys
- Heat recovery boilers
- Lattice tower and steel pole design, fabrication and construction
- Line routing, profiling and optimised tower spotting
- MV power line design and construction
- Open cycle, combined cycle and co-generation plants design
- Opticle fibre ground wire retrofit
- Optimisation of mast and towers
- Phase isolated busbars
- Piping systems
- Pressure balanced bellows
- Sub-station design
- System analysis (load flow and fault studies)
- Tower analysis and present strength assessment
- Transmission line design
- Transportable building design
- Updating studies of lines (raise heights, re-conductor)
Procurement
- Quality control and assurance
- Shipping co-ordination and transport
- Specifications for power plant equipment from a third party manufacturer.
- Subcontractor policies and supply chain checks and approvals
- Testing
- Third party factory acceptance
Construction
- Bench preparation
- Cabling installation and termination
- Civil foundation
- Foundation and drainage installation
- HV electrical equipment installation
- Initial land clearing
- MV/HV underground cable installation and termination
- Protection and control panel manufacture
- Structural steel
- Support for temporary works
- Transmission lines
Specialist Services
- Control process specification
- Energy balance analysis
- Material specification and instrumentation design
- Piping and instrumentation design
- Seismic assessment and qualification
- Specialised site vehicles
- System process design
Operations Maintenance
We have the capability to establish maintenance practises for new plant and review existing plant maintenance regimes and processes.
Asset Management and renewal
The business provides consulting services to review asset life, performance and specify changes and refurbishment and upgrading of existing power assets and lines.