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3110F.4.2 Cranes (N/E)
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- Cranes shall not be loaded in excess of the manufacturer's rating except during performance tests.
- Drums on load-hoisting equipment shall be equipped with positive holding devices.
- Under all operating conditions, there shall be at least two full turns of cable on grooved drums, and at least three full turns on ungrooved drums.
- Braking equipment shall be capable of stopping, lowering, and holding a load of at least the full test load.
- When not in use, crane booms shall be lowered to ground level or secured to a rest support against displacement by wind loads or other outside forces.
- Safety systems including devices that affect the safe lifting and handling, such as interlocks, limit switches, load/moment and overload indicators with shutdown capability [10.17], emergency stop switches, radius and locking indicators, shall be provided.
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