Communication, Teamwork and Lift Coordination
One voice
Every lift has a defined chain: the crane operator, the dogman or rigger, and the person in control. Only one person should give signals to the operator at a time. Where multiple people are involved, nominate a signaler and make sure everyone knows who it is. The operator must obey a stop signal from anyone.
Signals and systems
Know standard hand signals, whistle signals and radio protocols. Radios need a dedicated channel, clear call signs, and a check before the lift. Use positive confirmation and repeat-back for critical instructions. If communication fails, stop. Do not rely on assumed understanding.
Teamwork and human factors
Fatigue, complacency, time pressure and authority gradients cause errors. Speak up, use stop-work authority, and brief the team before the lift. Confirm roles, exclusion zones, escape routes and emergency signals. Debrief afterwards to capture lessons.
Traps
Questions test whether you would act on an unclear signal (stop and clarify), whether you accept a signal from an unknown person (only if it is a stop signal or the nominated signaler), and whether radio silence means "carry on" (it does not). Another trap is assuming the most senior person is the nominated signaler.
Worked example
During a blind lift behind a wall, radio contact drops out. The correct action is to stop the lift, hold the load safely, re-establish communication, and resume only after confirmation. Continuing on assumption is a failure of coordination, not efficiency.