Document No: 9961 Revision: F Issue Date: Jan-29-2018 Page 11 of 35
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.
used. It must be regularly inspected to be sure it is in good condition. Wire rope must be removed from
service when diameter loss or wire breakage occurs, as detailed in ANSI A10.4.
2. Be sure there is enough wire rope to reach the lowest possible point of travel.
3.
corrosive atmospheres, or corrosive chemicals. Such exposure will make the wire rope unsafe.
4. Acids will corrode and reduce the strength of both inner and outer stands. If wire rope has been exposed
to corrosive chemicals, it MUST be discarded upon completion of the project, or sooner if any damage
is evident. Do NOT save wire rope that has been in contact with corrosive substances. When in doubt,
replace the wire rope.
The need for replacement of suspension wire ropes shall be determined by regular inspection and shall
be based on the condition of the wire rope inspected. Wire rope in active service should be visually
inspected . A thorough inspection shall be made once a month, or before each
use if the suspension wire ropes have been inactive for 30 days or longer and are placed into service.
Dated and signed monthly reports indicating the condition of the ropes found during inspections must
be kept.
for the removal of the wire rope from service:
Wire rope with one or more of the following defects shall be removed and replaced immediately:
1. Whenever there is severe corrosion. Any development of slight corrosion shall be noted and watched
2. Whenever there are broken wires, as follows:
a. When there is more than one valley break. A valley break is a wire break occurring in the valley
between two adjacent strands.
b. 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.)
3. 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.
4.
the original diameter of the outside wires.
5. Whenever there are severe kinks, crushing, bird-caging, or other damage resulting in distortion of the
rope structure.
6. Whenever there is evidence of any heat damage resulting from a torch or caused by contact with
a. More than 1.2 mm (0.047 in) for diameters up to and including 20 mm (0.78 in)
b. 1.5 mm (0.059 in) for diameters 22 to 28 mm
c. 2.5 mm for diameters 32 to 40 mm.
7. Always inspect the wire rope termination and refer to the manufacturer’s inspection procedures.
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