Who should be briefed about the swing radius danger zone on a lifting operation?

• A. Only the operator
• B. All personnel on site
• C. Only crane team
• D. Only safety officer

Answer: (B)

The swing radius danger zone is the area around the crane where the load or crane could strike if it swings during lifting. Because a lift can move unpredictably and the load path may extend beyond what the operator can see, everyone on site needs to know where the danger zone is and what to do to stay clear.

A pre-lift briefing brings together all people who might be affected—operators, riggers, banksmen, supervisors, ground workers, and even visitors—so they understand the planned load path, the exclusion zones, access routes, signaling, and emergency procedures. When every person is informed, the risk of someone unintentionally entering the swing area is greatly reduced, and everyone knows how to respond if the crane starts to move unexpectedly.

If awareness is limited to only one group, others who are nearby can still be at risk, because they might not know where to stand, when to clear the area, or how the lift will proceed. That’s why brief all personnel on site about the swing radius and the lift plan.