Rule 5226.
(1)
Cable, wire rope, and wire rope slings shall have a designed safety factor of
not less than 5.
(2) Wire rope and
cable in load-carrying or hoist service and their fittings shall be visually
inspected when installed and once each day thereafter when in use.
(3) Wire rope shall not be used if, within a
segment of 8 diameters in length, the total number of visible broken wires
exceeds 10% of the total number of wires or if the rope shows other signs of
excessive wear, corrosion, or defects.
(4) Wire rope and cable removed from service
due to defects shall be plainly marked or identified as being unfit for further
use on a crane, hoist, or other load-carrying device.
(5) When U-type cable clips are applied, the
U-type cable clips shall comply with figure 1.
(6) Cable clips shall be spaced approximately
6 rope diameters apart.
(7) Wire
rope and cable shall be protected at sharp or tight bends by use of corner
irons or blocks.
(8) A safety hook
shall be used where there is a hazard created if the tension on the hook can be
relieved by fouling or catching.
(9) Installation, inspection, maintenance,
repair, and testing of ropes, cables, and slings shall be done only by persons
qualified to do such work.
(10)
Proper storage shall be provided for a sling while not in use.
(11) Connections, fittings, fastenings, and
other parts used in connection with ropes and cables shall be of good quality
and of proper size and strength and shall be installed in accordance with the
manufacturer's recommendations.
(12) Hooks, shackles, rings, pad eyes, and
other fittings that show excessive wear or that have been bent, twisted, or
otherwise damaged shall be removed from service.
(13) Running lines of hoisting equipment
located within 6 feet 6 inches of the ground or working level shall be boxed
off or otherwise guarded or the operating area shall be restricted.
(14) There shall be not less than 2 full
wraps of hoisting cable from slipping off.
(15) A drum shall have a flange at each end
to prevent the cable from slipping off.
(16) A bottom sheave shall be protected by a
close-fitting guard to prevent the cable from jumping the sheave.
(17) The reeving of a rope shall be so
arranged as to minimize the chafing or abrading while in use.
(18) Multiple-part lines shall not be twisted
around each other. If there is a slack rope condition, the rope shall be
properly seated on the drum and in the sheaves.
(19) Knots shall not be allowed in a wire
rope.
(20) Figure 1 reads as
follows:
FIGURE 1
Click Here To View
Image
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NOTE: There is only 1 correct method of
installing wire rope clips. Wire rope clips should be attached to rope ends as
shown in photograph above. The base of each clip should bear against the live,
or long rope end, and the U-bolt should bear against the dead or short rope
end.
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NUMBER AND SPACING OF CLIPS
FOR ROPES OF VARIOUS SIZES
|
Diameter of rope (in.)
|
Number of clips
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Center-to-center space between clips
(in.)
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Length of rope turned back exclusive of eye
(in.)
|
|
1/4
|
2
|
1 1/2
|
3
|
|
5/16
|
2
|
1 7/8
|
4
|
|
3/8
|
2
|
2 1/4
|
5
|
|
7/16
|
2
|
2 5/8
|
6
|
|
1/2
|
3
|
3
|
9
|
|
5/8
|
3
|
3 3/4
|
12
|
|
3/4
|
4
|
4 1/2
|
18
|
|
7/8
|
4
|
5 1/4
|
21
|
|
1
|
4
|
6
|
24
|
|
1 1/8
|
5
|
6 3/4
|
34
|
|
1 1/4
|
5
|
7 1/2
|
38
|
|
1 3/8
|
6
|
8 1/4
|
50
|
|
1 1/2
|
6
|
9
|
54
|
|
1 5/8
|
6
|
9 3/4
|
60
|
|
1 3/4
|
7
|
10 1/2
|
74
|
|
1 7/8
|
8
|
11 1/4
|
90
|
|
2
|
8
|
12
|
96
|
|
2 1/8
|
8
|
13
|
104
|
|
2 1/4
|
8
|
14
|
112
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