A crane operator is conducting a tandem lift with another crane. As the loads are being hoisted, the signal person for the operator's crane extends both arms outward, palms down, and moves them up and down slowly, while simultaneously giving the 'raise the boom' signal. What composite action should the operator perform?

Question: A crane operator is conducting a tandem lift with another crane. As the loads are being hoisted, the signal person for the operator's crane extends both arms outward, palms down, and moves them up and down slowly, while simultaneously giving the 'raise the boom' signal. What composite action should the operator perform?

Answer options:

• Boom up, while simultaneously lowering the load slowly.
• Lower the load slowly, while simultaneously booming down. ✅ Boom up slowly, while simultaneously raising the load slowly.
• Stop all movements and prepare for communication.

Correct answer: Boom up slowly, while simultaneously raising the load slowly.

Explanation: The signal with both arms outward, palms down, moving up and down slowly, is the signal for 'all functions slowly'. When combined with the 'raise the boom' signal (thumb pointing up, arm extended), it means to 'boom up slowly'. Similarly, the 'hoist' for the load would also be performed slowly. Therefore, the composite action is 'boom up slowly, while simultaneously raising the load slowly'.