Communication Signals For Crane Operations Flashcards
What does 1,2,3 and 4 bells or flashes mean?
1 is STOP
2 is RAISE
3 is LOWER
4 is ALL CLEAR
How do you signal hoist up and down?
Twirl forefinger pointing up or down
How do you signal stop?
Both hands outstretched horizontally with fingers outstretched. If you can only use one hand, palm of your hand towards the operator with fingers outstretched and wave your hand side to side
What is the signal to raise or lower the boom?
Hand out with fingers closed and thumb indicating if you want to boom lowered or raised
How do you signal to lengthen and shorten the boom?
Holding your fists in front of your body with thumbs pointed inward to shorten or outward to lengthen the boom.
How do you signal to lengthen and shorten the boom?
Holding your fists in front of your body with thumbs pointed inward to shorten or outward to lengthen the boom.
What is the signal to swing the boom?
Extend your arm and point with your index finger
How do you signal to raise the load and lower the boom?
One hand out with thumb down and the other out with index finger pointed up twirling in a horizontal direction. Or with one hand thumb up and fingers indicated the movement of the hook.
How do you signal to use the main line?
For whip line?
Tap your first to your head
Tap your elbow with one hand or point at your shoulder
How do you signal to use the main line?
For whip line?
Tap your first to your head
Tap your elbow with one hand or point at your shoulder
How do you signal to move slowly?
Arm extended with index finger up twirling slowly with your other palm above
How do you signal to lock every (DOG EVERYTHING)?
Clasp your hands in front of your body
