Hand Signals for Mobile Crane Operations_Scribd.ppt
- 1. Hand signals shall be post on the equipment or conspicuously at the jobsite. ANSI B30.5 – Hand Signal Chart
- 2. Signalperson: Signals shall be Discernible or audible at all times. No response shall be made unless signals are clearly understood. Hand Signals
- 3. Hoist: With the forearm vertical, forefinger pointing up, move hand in small horizontal circle. Hand Signals - Hoist
- 4. Lower: With the arm extended downward, forefinger pointing down move hand in small horizontal circle Hand Signals - Lower
- 5. Use Main Hoist: Tap fist on top of head then use regular signals. Hand Signals – Main Hoist
- 6. Use Whip-Line: (Auxiliary Hoist) Tap elbow with one hand, then use regular signals. Hand Signals – Whip-line
- 7. Raise Boom: Arm extended fingers closed with thumb pointing upward. Hand Signals – Raise Boom
- 8. Lower Boom: Arm extended fingers closed with thumb pointing downward. Hand Signals – Lower Boom
- 9. Move Slowly: Use one hand to give any motion signal and place the other hand motionless in front of hand giving the motion signal (Hoist slowly shown as example). Hand Signals – Move Slowly
- 10. Raise the Boom & Lower the Load: With arm extended, thumb pointing up, flex fingers in and out as long as load movement is desired. Hand Signals – Raise Boom & Lower the Load
- 11. Lower the Boom & Raise the Load: With arm extended, thumb pointing down, flex fingers in and out as long as load movement is desired. Hand Signals – Lower the Boom & Raise the Load
- 12. Swing: Arm extended, point with finger in direction of swing of boom. Hand Signals - Swing
- 13. Stop: Arm extended, palm down, move arm back and forth horizontally. Hand Signals - Stop
- 14. Emergency Stop: Both arms extended, palms down, move arms back and forth horizontally. Hand Signals – Emergency Stop
- 15. Travel: Arm extended forward hand open and slightly raised make a pushing motion in direction of travel Hand Signals - Travel
- 16. Dog Everything: Clasp hands in front of body. Hand Signals Dog Everything
- 17. Travel Both Tracks: Use both fists in front of body, making a circular motion about each other, indicating direction of travel, forward or backward. (For land cranes only) Hand Signals – Travel Both Tracks
- 18. Travel One Track: Lock the track on side indicated by raising fist. Travel opposite direction indicated by circular motion of other fist, rotated vertically in front of body. (For land cranes only) Hand Signals – Travel One Track
- 19. Extend Boom: (Hydraulic cranes) Both fists in front of body with thumbs pointing outward. Hand Signals – Extend Boom
- 20. Retract Boom: (Hydraulic cranes) Both fists in front of body with thumbs pointing towards each other. Hand Signals – Retract Boom
- 21. Extend Boom – One Hand Signal: (Hydraulic cranes) One fist in front of chest with thumb tapping on chest. Hand Signals – Extend Boom One Hand
- 22. Retract Boom – One Hand Signal: (Hydraulic cranes) One fist in front of chest with thumb pointing outward and heel of fist tapping on chest. Hand Signals – Retract Boom One Hand