Planning ahead is vital in ensuring you are safe when working near the overhead network. Limit the risk of accident and injury by gaining an understanding of the area you are working in.
Simple steps to achieve this are:
- know the location and voltages of network assets in your work area to determine the required clearances
- check the height of loads
- determine the extension, reach and height of equipment
- do not lift loads directly underneath powerlines
- do not lift loads over powerlines
- establish your lay down area or site storage away from the Western Power network
- place waste bins outside of the danger zones (see danger zone section for more information)
- tip sand outside of the danger zone.
A danger zone is a specific area surrounding live electrical apparatus that ordinary persons, equipment and materials must not enter. The size of the danger zone is determined by the voltage of the electrical apparatus. Find out more about your obligations by visiting the danger zone section in your industry category.
Determine the voltage of distribution assets
Distribution assets include the low voltage network (415 - 1,000 volts) and parts of the high voltage network (up to 33,000 volts or 33kV).
To determine the voltage of overhead and underground assets in your work area, lodge a Dial Before You Dig enquiry. Submit your request for the following services at least 30 days before you need to start work (longer if you think assets might need to be removed or relocated).
Services for transmission and communication assets
Western Power offers a number of services for proposed works that may be impacted by transmission (33,000 volts - 330,000 volts) and communication assets. These include:
- relocation of transmission assets
- relocation of communication assets
- clearance assessments
- earth potential rise/low frequency induction studies
- provision of technical data
- civil/structural assessments
- de-energising the transmission line (requires at least 40 business days notice).
Should you wish to proceed with any of these services or for more information on:
- relocation of transmission and/or communication assets please refer to moving our equipment
- all other technical services, please apply here.
A consultant will contact you within two business days to progress your enquiry.
All services are conducted on full cost recovery basis.
Preventing ground collapse for overhead assets
Ground collapse is one of the primary risks to be controlled in excavation work. Ground collapse can occur quickly and without warning, giving a worker virtually no time to escape.
When planning the work, select appropriate excavation methods and control measures for the working environment and consider the collapsible areas for overhead assets.