This document and all copies are the property of Spider
®
. All dimensions and data are indicative only.
The user must ensure that the equipment complies with local rules and regulations.
Page 14 of 38
Revision: B
Issue Date: 2017-Dec-18
Document No: 721641-1
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Wire rope with one or more of the following defects shall be replaced immediately:
Whenever there is severe corrosion. Any development of slight corrosion shall be noted
and watched closely.
Whenever there are broken wires, such as:
When there is more than one valley break. A valley break is a wire break occurring in
the valley between two adjacent strands.
When there are six (6) randomly distributed broken wires in one rope lay or three (3)
broken wires in one strand in one rope lay. (A rope lay is the length along the rope in
which one strand makes a complete revolution around the rope.)
Whenever there are broken wires in the vicinity of attachments. If this condition is
localized in an operating rope, the section in question may be eliminated by making a new
attachment. This may be done instead of replacing the entire rope.
Whenever there is abrasion, scrubbing, flattening, or peening that causes loss of more
than one third of the original diameter of the outside wires.
Whenever there are severe kinks, crushing, bird caging, or other damage resulting in
distortion of the rope structure.
Whenever there is evidence of any heat damage resulting from a torch or caused by
contact with electrical wires.
For the specified DWH 14 mm wire rope, whenever the reduction from the nominal
diameter of the wire rope is more than 0.02” (0.5 mm). For the specified 9/16” wire rope,
whenever the reduction from the nominal diameter of the wire rope is more than .047 in
(1.2 mm).
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Always inspect the wire rope termination and refer to the manufacturer’s inspection procedures.
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Steel wires ropes must be replaced under any of the following conditions:
6 broken wires randomly distributed in one rope lay;
3 broken wires in one strand in one lay length;
Damage due to heat or corrosion;
Reduction of the nominal diameter by more than 10%;
Kinking, crushing, bird caging,or any other distortion of the wire rope structure.
Kinking
Crushing
Bird Caging
