Two workers had their licences suspended after a mobile crane struck a high voltage 11kv powerline.

Another worker had their licence suspended after erecting a scaffold one metre from a 11kv powerline and less than 30cm from a low voltage 415v powerline.

SafeWork SA has issued a warning to businesses and workers about the risks of working around overhead powerlines.

So far this year, 11 incidents have been reported to SafeWork SA, including a driver who struck 11kv powerlines at a Largs North business last week.

No-one was injured in this latest incident, which caused a power outage, and SafeWork SA Inspectors attended the scene.

The suspension of the three workers was the result of investigations by SafeWork SA.

The incident involving the mobile crane occurred during work to install rainwater tanks at a residential property at Carey Gully on 22 January 2024. This saw the crane operator’s and the rigger’s High Risk Work Licences suspended for six months.

The safe working distance for the mobile crane that struck the powerline would have been three metres if a spotter had been on site to ensure the distance was maintained.

The scaffolder, who was working at a residential construction site at Windsor Gardens on 8 May 2024, had their High Risk Work licence suspended for 12 months.

The safe working distance for workers installing scaffolding near an 11kv powerline and a 415v powerline is three metres.

Safe working distances vary according to the type of work being undertaken, equipment used and voltage of the powerlines, therefore it’s essential that a risk assessment is undertaken.

Other dangerous incidents have included:

• A crane hitting a high voltage powerline on 21 June.
• An excavator bringing down powerlines on 21 March and 3 June.
• An underground high voltage wire exploding after being struck by an excavator on 12 April.

No serious injuries were reported in any of the incidents.

Attribute quotations to SafeWork SA Executive Director Glenn Farrell

“The inherent dangers of high risk work means it is of critical importance that people comply with work health and safety laws.

“In suspending High Risk Work Licences, SafeWork SA is sending a clear signal we will not tolerate dangerous work practices.

“Working near powerlines can be fatal if correct procedures are not followed.

“People granted a High Risk Work Licence have undergone specialist training and have no excuse for putting themselves or other people in danger.”