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9.6
WIRE ROPE
9.6.1
WIRE ROPE INSPECTION
Each day and before use, inspect the wire rope for the following conditions:
1 - Kinking (Sharp bends)
6 - Rope diameter loss
2 - Crushing
7 - Rope strand uneveness
3 - Unstranding
8 - General corrosion
4 - Birdcaging
9 - Broken strands
5 - Core protrusion
10 - Cut strands
DANGER
Do Not open the rope for inspection. Inspect the rope daily or before use each day and also inspect
the rope eye for abrasion, corrosion and broken wires.
Inspect the wire rope monthly as follows:
1 - The entire length of the rope
2 - The wire rope eye
9.6.2
ROPE REPLACEMENT
It is extremely difficult to determine the exact time for replacement of wire rope since many variable factors
are involved. Proper determination of the condition of a wire rope depends upon the good judgement of an
experienced person in evaluating the remaining strength in a used rope after allowance for deterioration
disclosed by inspection. The following reasons are sufficient justification for consideration of rope replacement:
1-Six randomly distributed broken wires in one rope lay or three broken wires in one strand in one rope lay.
!
1 - When there are either 3 broken wires in one strand or a total of six
broken wires in all strands in any one rope lay.
2 - When flat spots on the outer wires appear and those outside wires ara
less than 2/3 the thickness of the unworn
3 - When there is a decrease of diameter indicating a core failure
4 - When kinking, crushing, birdcaging or other distortion occurs
5 - When there is noticeable heat damage (discoloration) of the rope by
any means
6 - When the diameter is reduced from nominal size by 0.8 mm (1/32”) or
more
7 - If a broken wire protrudes or lops out from the core of the rope
