Question 632 Deck General
70% to passHow should you signal the crane operator to lower the boom and raise the load?
A
With arm extended downwards and forefinger pointing down, move hand in small horizontal circles.
B
Extend arm with thumb pointing downward and flex fingers in and out.
C
With forearm vertical and forefinger pointing up, move hand in small horizontal circles.
D
Extend arm and point finger in the direction to move the boom.
AI Explanation
The correct answer is B) Extend arm with thumb pointing downward and flex fingers in and out. This is the correct signal according to the Standard Hand Signals for Controlling Crane Operations established by OSHA (Occupational Safety and Health Administration). The downward thumb pointing and flexing fingers signal specifically indicates to the crane operator that they should lower the boom and raise the load. The other options do not match the standard hand signals for this particular crane operation.
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