Subpart-N - Subpart N Cranes, Derricks, Hoists, Elevators,...

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Subpart N Cranes, Derricks, Hoists, Elevators, & Conveyors
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When wire rope is to be taken out of service Six randomly distributed broken wires in one lay of the rope 3 broken wires in one strand in one lay of the rope Wear of 1/3 of the original diameter of the outside individual wires Evidence of heat damage Reduction in nominal diameter of 1/64” for 5/16” rope (1/32” for ropes 3/8” to 1/2”)
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Fire Protection Fire extinguishers rated 5BC or higher must be available at all operator stations or cabs of equipment
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Clearance from crane to powerlines 10 feet if under 50 kV 10 feet plus .4 inches per kV over 50 kV Or 10 feet plus 1 foot per 30 kV over 50 kV
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Clearance distances for equipment and powerlines are different for equipment in transit No load shall be supported by the equipment Booms are to be lowered
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Spotter Spotter to be designated to observe clearance of the equipment and powerlines
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Keep employees clear of loads about to be lifted of suspended loads
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Subpart-N - Subpart N Cranes, Derricks, Hoists, Elevators,...

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