Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 52 - SAWMILLS › GENERAL PROVISIONS › Section R. 408.15226 - Cable, wire rope, and wire rope slings

Current through Vol. 24-12, July 15, 2024
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
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						  Image
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.
NUMBER AND SPACING OF CLIPS
FOR ROPES OF VARIOUS SIZES
Diameter of rope (in.)
Number of clips
Center-to-center space between clips
										(in.)
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