Mobile elevating work platforms (EWPs) are widely used across mining operations to provide safe access to elevated work areas. However, operating EWPs close to fixed structures or overhead plant can introduce significant hazards, including crushing, dropped objects and contact with surrounding infrastructure.
An incident investigation highlighted the serious risks of operating an EWP in confined spaces at height. Two workers were positioned in an EWP basket about 27 metres above ground while conducting survey measurements on a stacker structure to improve conveyor belt alignment. The task required them to position the basket close to the underside of the stacker conveyor frame.
During the task, the EWP operator unintentionally activated the control, causing the basket to move upward. As it rose, the EWP operator’s head became trapped between the stacker structure and the secondary guarding sensor bar fitted to the basket. The base alarm activated, alerting the spotter, who immediately lowered the basket. Despite the rapid response, the EWP operator sustained injuries and briefly lost consciousness due to pressure on their neck.
Takeaways
- Identify crush hazards: Assess work areas for potential entrapment or crushing points before positioning EWPs near structures or overhead plant.
- Plan the task: Conduct thorough risk assessments and implement controls to prevent exposure to entrapment hazards.
- Use appropriate engineering controls: Where practicable, select EWPs fitted with protective cages, secondary guarding systems or sensor devices designed to detect operator entrapment.
- Establish effective communication: Implement clear communication protocols between operators, spotters and other personnel involved in the task.
- Ensure emergency preparedness: Establish emergency response procedures that clearly outline actions for entrapment or entanglement incidents.
- Confirm competency: Ensure all EWP operators are trained, assessed as competent and authorised to operate the specific equipment.
Summary
Operating EWPs near fixed structures can create significant entrapment and crushing hazards. Mine operators must identify and control these risks during both task planning and execution. Effective hazard identification, appropriate engineering controls, competent operators and clear communication are critical to preventing serious injuries when working at height. The elevating work platforms page on the WorkSafe website contains more guidance about this workplace risk.
