Harrington Hoists and Cranes RH Wire Rope Hoist - Manual (Page 48)

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Table 5-5 Hoist (and Trolley) Inspection Methods and Criteria (continued)
Item Method Criteria Action

The full length of the Wire Rope must be inspected for rope diameter, Broken strands or
wires, and condition. Special care should be taken when inspecting sections of rapid deteriation, such as the
following:
 sections in contact with saddles, equalizer sheaves, or other sheaves where the rope travel is limited;
 sections of the rope at or near terminal ends where corroded or broken wires may protrude;
 sections subject to reverse bends;
 sections of rope which are normally hidden during visual inspection, such as parts passing over sheaves.
Any condition that could degrade the strength and performance of the wire rope must be reported to a
qualified person for evaluation and disposition.
Wire Rope
Diameter Measure, Visual Any reduction in the diameter of the wire rope
must not be reduced due to corrosion, wear or
core collapse more than the discard value in
Table 5-7. The outer wires should not be worn
more than 1/3 of their original diameter. Replace. Inspect
drum and all
sheaves.
Wire Rope –
Broken
Wires or
Strands Visual The wire rope should be inspected for broken
wires or strands, paying close attention to end
connection and sections that frequently pass over
sheaves. The rope must NOT have:
 More than the Maximum number of broken
wires listed in Table 5-7.
 More than 4 broken wires in 1 strand in one
lay (one full revolution of a strand around the
rope).
 Any broken strands.
Replace
Wire Rope –
Condition Visual  Any wire rope deformation with permanent
bends, flattening, unraveling, birdcaging, etc.
 General corrosion.
 Rope core exposure.
 One or more loose or protruding strands or
wires from rope.
 Severely corroded or broken wires at end
connections.
 Severely corroded, cracked, bent, worn or
improperly applied end connections
 Any evidence of heat damage of any kind.
(Wire rope exhibits any heat discoloration or
localized loss of lubrication).
Replace
Wire Rope -
Lubrication Visual The wire rope must be maintained in a clean and
well lubricated condition. Clean/lubricate
(see Section 6.1).
Trolley Side Plates Visual Must be free of significant deformation Replace
Trolley Wheel –
Condition Visual Trolley Wheel should be free of significant wear,
cracks, nicks and gouges. Replace.