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🏗️ Crane Safety

Topic: Safe crane operation and rigging Duration: 10-15 minutes Required: Only certified operators and riggers may work with cranes

Crane lift planning process
1
Determine the load weight
Calculate the total weight of the load including rigging hardware, spreader bars, and any attachments. Never estimate — get the actual weight from documentation or a scale.
2
Review the load chart
Check the crane's load chart for the specific configuration — boom length, radius, and operating angle. Capacity decreases as radius increases.
3
Inspect equipment and site
Complete the daily crane inspection. Verify ground conditions are firm and level, outriggers are fully extended, and power line clearances meet the 10-foot minimum.
4
Rig the load properly
Select slings and hardware rated for the load weight. Inspect all rigging before use. Ensure the load is properly secured with tag lines attached for control.
5
Establish communication
Designate a qualified signal person. Confirm hand signals or radio communication between operator, rigger, and signal person before starting the lift.
6
Execute the lift
Lift slow and smooth — hoist just enough to clear, pause to verify stability, then proceed. Keep all personnel out of the swing radius and never walk under a suspended load.

The Stats​

  • Cranes cause approximately 44 deaths per year
  • Most common incidents: electrocution, struck by load, tip-over
  • OSHA requires: Only trained and certified personnel

Pre-Operation Inspection​

Daily Inspection​

  • Structural components - No cracks, bends, damage
  • Wire rope - No broken wires, kinks, damage
  • Hydraulics - No leaks, proper operation
  • Controls - All controls functional
  • Safety devices - Load moment indicator, anti-two-block
  • Outriggers - Properly set and secured

Setup Requirements​

Ground Conditions​

  • Firm and level - Ground can support crane weight
  • No underground utilities - Verify utility locations
  • Outriggers fully extended - Per manufacturer specs
  • Cribbing - If needed for stability

Clearances​

  • Power lines - Minimum 10' clearance (20' for over 50kV)
  • Buildings - Adequate clearance
  • Other equipment - Safe distance
  • Personnel - Keep workers away from swing radius

Load Handling​

Load Limits​

  • Know the capacity - Check load chart
  • Account for rigging - Include weight of rigging
  • Radius matters - Capacity decreases with radius
  • Never exceed capacity - Even "just a little"

Rigging​

  • Proper slings - Right type and capacity
  • Inspect rigging - Before each use
  • Secure attachment - Load properly attached
  • Tag lines - Use tag lines to control load

Safe Operation​

During Lift​

  • Slow and smooth - No sudden movements
  • Watch the load - Monitor load at all times
  • Clear communication - Hand signals or radio
  • Stay in cab - Operator stays at controls
  • No distractions - Focus on the lift

Hand Signals​

Standard hand signals must be understood:

  • Hoist - Arm extended up, finger pointing up
  • Lower - Arm extended down, finger pointing down
  • Stop - Arm extended, palm down
  • Swing - Arm extended, finger pointing direction

Common Hazards​

HazardPrevention
ElectrocutionMaintain 10' clearance from power lines
Tip-overProper setup, don't exceed capacity
Struck by loadKeep personnel out of swing radius
Two-blockingUse anti-two-block device
Rigging failureInspect rigging, use proper capacity
Certified Operators Only

Only trained and certified crane operators may operate cranes. Unauthorized operation is illegal and dangerous.

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