[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: 30CFR18.45]



[Page 108-109]

 

                       TITLE 30--MINERAL RESOURCES

 

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

 

PART 18_ELECTRIC MOTOR-DRIVEN MINE EQUIPMENT AND ACCESSORIES--Table of 

Contents

 

             Subpart B_Construction and Design Requirements

 

Sec.  18.45  Cable reels.



    (a) A self-propelled machine, that receives electrical energy 

through a portable cable and is designed to travel at speeds exceeding 

2.5 miles per hour, shall have a mechanically, hydraulically, or 

electrically driven reel upon which to wind the portable cable.

    (b) The enclosure for moving contacts or slip rings of a cable reel 

shall be explosion-proof.

    (c) Cable-reel bearings shall not constitute an integral part of a 

circuit for transmitting electrical energy.

    (d) Cable reels for shuttle cars and locomotives shall maintain 

positive tension on the portable cable during reeling and unreeling. 

Such tension shall



[[Page 109]]



only be high enough to prevent a machine from running over its own 

cable(s).

    (e) Cable reels and spooling devices shall be insulated with flame-

resistant material.

    (f) The maximum speed of travel of a machine when receiving power 

through a portable (trailing) cable shall not exceed 6 miles per hour.

    (g) Diameters of cable reel drums and sheaves should be large enough 

to prevent undue bending strain on cables.