OSHA 10-Hour Construction ReviewFocus Four HazardsMedium
A worker is operating a backhoe near an excavation. To prevent 'struck-by' incidents from the swinging counterweight or bucket, what is the most effective safety measure to implement for other workers in the vicinity?
- AEstablish and maintain an exclusion zone around the backhoe's swing radius.
- BInstall flashing lights on the backhoe.
- CRequire all workers to wear high-visibility vests.
- DEnsure the operator has a clear view of all workers.
Show answer & explanationAnswer & explanation
Correct answer: A. Establish and maintain an exclusion zone around the backhoe's swing radius.
Establishing and maintaining an exclusion zone around the swing radius of heavy equipment like a backhoe is the most effective way to prevent 'struck-by' incidents. This physically separates workers from the hazard, eliminating the risk of being hit by the swinging components.
Why the other options are wrong
- B. Flashing lights increase equipment visibility but do not prevent workers from being struck if they are within the swing radius.
- C. High-visibility vests improve visibility but do not prevent workers from entering the danger zone or being struck by equipment.
- D. While important, operator visibility alone is not a foolproof method to prevent incidents if workers are allowed within the swing radius.
Heavy Equipment Swing Radius Safety
Safety measures to prevent workers from being struck by the rotating superstructure or attachments of heavy equipment.
- Swing radius is the area where the machine's components can rotate.
- Exclusion zones (barricades, spotters) are critical.
- Prevents 'struck-by' injuries, a leading cause of fatalities.
Memory trick: Swing radius: 'S'tay 'S'afe, 'S'tay 'S'eparate!