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Before a crane is operated or transported, it must be thoroughly inspected by the operator. The operator uses the Crane Operators Daily Check-list (ODCL) (fig. 12-35). The operator visually inspects and checks each item prescribed on the checklist.

When the operator observes a deficiency of a load-bearing or load-controlling part or safety device (major deficiency) or an operating condition that would cause the slightest loss of control or otherwise render

Figure 12-35.-Crane Operator's Daily Checklist.

the crane unsafe, the operator must secure the crane and notify the crane crew supervisor.

The Operator's Daily PM Report, NAVFAC Form 11260/4, is also used with the ODCL when performing the crane prestart inspection. The ODCL is turned in to the crane crew supervisor at the end of each day or shift for reviewing and signing. The NAVFAC Form 11260/4 is turned in to dispatch. As outlined in the NAVFAC P-307, the minimum requirement for retaining ODCLs is those completed during the current month and during the previous month of operation.

Wire Rope Inspection

Part of the ODCL inspection is the thorough inspection of all wire rope before using a crane. All running rope in continuous service must be visually inspected for crushing, kinking, corrosion or other damage, broken wires, and proper lubrication (fig. 12-36).

Other areas to inspect are wire rope sockets, swage fittings, swivels, pendants, and securing hardware for wear. Hoist drum end fittings need only be disconnected or disassembled when experience or visible indications deem it necessary.

The exact time for replacement of wire rope cannot be given because many variables are involved; however, safety depends upon the use of good judgment in evaluating wire rope.

The following conditions are reasons for wire rope replacement:

1. Running ropes. six or more broken wires randomly distributed, broken or torn wires in one lay, or three broken wires in one strand in one lay. Replace end

Figure 12-36.-Common wire rope defects. 12-23

3. Kinks or crushed sections. Severe kinks or crushed rope in straight runs where the wire rope core is forced through the outer strands.

4. Flattened section. Flat sections where the diameter across the flat section is less than five sixths of the original diameter.

5. Wire rope wear. Measure wire rope with wire rope calipers (fig. 12-37) to check for wear accurately. Replace why rope that has wear of one third of the original diameter of outside individual wires. A crescent wrench can be used as an expedient means to measure wire rope.

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