Section R. 408.11972 - Maintenance; wire ropeRule 1972.
(1) Running wire ropes shall be replaced when they show 6 random broken wires in 1 rope lay or 3 broken wires in 1 strand of a rope lay; wear of 1/3 of the original diameter of outside individual wires; kinking, crushing or bird caging; heat damage; reduction in nominal diameter of 3/64 inch for ropes to 3/4 inch, 1/16 inch for ropes 7/8 inch to 1 1/8 inch, 3/32 inch for ropes 1 1/4 inch to 1 1/2 inch.(2) A standing wire rope shall be replaced if it has more than 2 broken wires in 1 lay in a section beyond an end connection or 1 broken wire at an end connection.(3) A wire rope having more than 1 broken wire at a socketed fitting shall be resocketed.(4) Wire rope shall be stored in a manner to prevent damage or deterioration and handled in a manner to prevent kinking or twisting.(5) Before cutting preformed rope, seizing shall be placed on each side of the cut to prevent unlaying of the strands. On nonpreformed rope 7/8 inch in diameter or smaller, 2 seizings shall be placed on each side of the cut, and for nonpreformed rope more than 7/8 inch in diameter, 3 seizings on each side shall be used.(6) During installation, wire rope shall not be dragged in dirt or around sharp objects.Mich. Admin. Code R. 408.11972