[Code of Federal Regulations]

[Title 30, Volume 1]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 30CFR57.19024]



[Page 395]

 

                       TITLE 30--MINERAL RESOURCES

 

  CHAPTER I--MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR

 

PART 57_SAFETY AND HEALTH STANDARDS_UNDERGROUND METAL AND NONMETAL MINES

--Table of Contents

 

                      Subpart R_Personnel Hoisting

 

Sec.  57.19024  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 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.

    (h) Loss of more than ten percent of rope strength as determined by 

nondestructive testing.