The West Palm Beach crane pick has this communication condition: lift path is blocked from operator view. Which safety control should be used?
Correct Answer
C) single designated signaler
Crane operations need clear, qualified signaling when the operator's view or communication is limited.
Why This Is the Correct Answer
Crane operations need clear, qualified signaling when the operator's view or communication is limited.
Why the Other Options Are Wrong
Option A: several workers signal at once
several workers signal at once may relate to another site control, but it does not remove or guard the crane signal control exposure being tested.
Option B: rigger and foreman both direct
rigger and foreman both direct may relate to another site control, but it does not remove or guard the crane signal control exposure being tested.
Option D: hand and radio from two people
hand and radio from two people may relate to another site control, but it does not remove or guard the crane signal control exposure being tested.
Memory Technique
If Lift Director can still reach the worker, the control is decoration.
Reference Hint
Open-book path: tab OSHA 29 CFR 1926 to Subpart CC, 1926.1419 Signals and 1926.1428 Signal person qualifications; verify the OSHA safety threshold or jobsite control before answering.
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