Shock incident underscores the dangers of powerline proximity

A recent incident reminds us that electricity and heavy machinery can be a dangerous combination. 

The recent incident where a worker operating mobile plant came into contact with overhead powerlines is a chilling wake-up call about the potentially fatal consequences of working near electrical infrastructure. While the investigation is ongoing, this event highlights the critical need for strict safety protocols when work must be conducted near powerlines.

Electricity: Invisible and lethal

It’s easy to forget the silent but deadly power coursing through overhead powerlines. You don’t need direct contact to be electrocuted. Electricity can arc or jump across gaps, especially at the high voltages common in distribution lines. The risk increases substantially near water or when materials become wet.

Preventing powerline contact

In Queensland, both the Electrical Safety Act 2002 and the Work Health and Safety Act 2011 place legal obligations on businesses to ensure the safety of workers around electricity.  Businesses must prioritise risk management, implement control measures, and create a culture where safety is paramount.

Key control measures

While a combination of approaches might be necessary, here are essential strategies to prevent powerline contact incidents:

• Eliminate the hazard: When  possible, de-energize or re-route powerlines before work begins. Contact your electricity provider for assistance. This might involve delays, but safety comes first.
• Exclusion zones: Maintain a safe distance from energised powerlines based on voltage and the nature of work. Mark exclusion zones on the ground for clear visual cues, and enforce them strictly.
• Safety observers: Appoint trained and dedicated observers to warn equipment operators of approaching exclusion zones and stop work if necessary.
• Technology:
  • Utilise zone-limiting or warning devices on mobile cranes.
  • Consider GPS geofencing or electrical detection systems.
• Training and awareness:  Train workers on exclusion zones, safe work procedures, identification of overhead powerlines, and emergency response.
• Consultation: Ensure open communication among all parties involved, including plant operators and electricity providers.

Remember: Electricity is unforgiving. Prevention is always the safest approach. Prioritise the elimination of the hazard whenever possible. If powerlines cannot be de-energised or re-routed, a robust combination of control measures is essential to safeguard your workers.