During a lift, who is responsible for keeping nonessential personnel out of the exclusion zone?

• A. A trained signaler or spotter working with the crane operator.
• B. The operator alone.
• C. Any bystander can decide.
• D. The maintenance supervisor only after the lift.

Answer: (A)

Keeping nonessential personnel out of the exclusion zone during a lift is the responsibility of a trained signaler or spotter who works with the crane operator. This person stays in a safe vantage point to watch the load path and area, communicates movements to the operator, and enforces access control so that only approved people are nearby. The operator alone may not see everything, especially around blind spots, and may not be aware of people entering the hazard area. A bystander can’t reliably enforce safety, and waiting for the maintenance supervisor after the lift misses the critical window where injuries could occur. The spotter provides proactive control of the zone throughout the lift, using agreed signals or radios to coordinate with the operator.