Signals and Communication Standards Flashcards
7 cards from real NCCCO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Signals and Communication Standards flashcards as text
When radio communication is used for crane operations, who is responsible for ensuring the communication system is functioning before lifts begin?
Answer: Both the operator and signal person
Both the operator and signal person share responsibility for verifying radio communication is working before operations begin.
If a signal person gives a 'STOP' signal and the operator does not respond, what should the signal person do next?
Answer: Give the emergency stop signal and take all necessary actions to halt the lift
If a STOP signal is ignored, the signal person must escalate to the emergency stop signal and take all available actions to halt crane movement.
What does a signal person do when they raise a fist with the thumb pointing upward?
Answer: Hoist (raise the load)
Thumb up with a raised fist is the standard hand signal meaning Hoist — raise the load.
During a blind lift where the operator cannot see the load, which of the following is the MOST critical requirement?
Answer: One signal person with an unobstructed view must direct the entire operation
A single qualified signal person with an unobstructed view of both the load and the crane must direct all movements during a blind lift.
Which signal directs the crane operator to travel toward the signal person?
Answer: Arm extended pointing in the direction of travel, then beckoning motion
The travel-toward signal is given by extending the arm pointing in the direction of travel followed by a beckoning motion.
Under ASME B30.5, when must a signal person be used?
Answer: Whenever the operator's vision of the load path or landing zone is obstructed
ASME B30.5 requires a signal person whenever the operator cannot see the load, load path, or landing zone clearly.
A signal person uses a closed fist with arm extended horizontally, moving the fist in small horizontal circles. What does this signal mean?
Answer: Slew (swing) the crane
A closed fist moving in small horizontal circles with arm extended signals the operator to swing (slew) the crane.