30 CFR 77.1434
§ 77.1434 Retirement criteria.
United States · 30 CFR — Mineral Resources · Status: effective
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- Citation
- 30 CFR 77.1434, § 77.1434 Retirement criteria, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/134181
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Full text
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 deterioration 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.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.