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§75.1434 — Retirement criteria

Unless damage or deterioration is removed by cutoff, wire ropes shall be removed from service when any of the following conditions occurs:

 
(a)
The number of broken wires within a rope lay length, excluding filler wires, exceeds either —
 
(1)
Five percent of the total number of wires; or
 
(2)
Fifteen percent of the total number of wires within any strand;
 
(b)
On a regular lay rope, more than one broken wire in the valley between strands in one rope lay length;
 
(c)
A loss of more than one-third of the original diameter of the outer wires;
 
(d)
Rope deterioriation from corrosion;
 
(e)
Distortion of the rope structure;
 
(f)
Heat damage from any source;
 
(g)
Diameter reduction due to wear that exceeds six percent of the baseline diameter measurement; or
 
(h)
Loss of more than ten percent of rope strength as determined by nondestructive testing.

   Reason: