Maintenance of supporting structures for lines
An electricity entity should have a maintenance system that achieves a minimum three-year moving average reliability against the incidence of failure of 99.99 per cent a year.
The Code of Practice for Works sets down the principles and minimum requirements for maintaining the supporting structures for overhead lines.
Refer to the Code of Practice for details on:
Refer to the Code of Practice for Electrical Work for best practice recommendation on working on poles.
Frequency of pole inspection
Electricity entities must ensure the poles supporting their powerlines are safe.
Frequency of inspection will depend on inspection procedures and what is known of the individual poles. For example:
- durability rating
- preservation type
- performance of poles
- fungal decay
- termite activity
In the absence of documented knowledge of pole performance, poles should be inspected at least every five years.
Last updated July 16, 2009
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