Program Policy Manual - VOLUME V - Mine Safety and Health ...

MSHA PROGRAM POLICY MANUAL VOLUME V
considered to be in violation of this Section.
The qualified person making the examination is not required to
sign the book; however, the name of the qualified person who made
the required examination and test shall appear under "Examiner"
in the book, Form 6-1492 (Weekly Record). The results of
examinations required by this Section may be entered or recorded
by the qualified person making the examination or by a
responsible mine official (superintendent, mine foreman,
electrical or maintenance foreman) or may transfer information
from a check list, filled out by the examiner, to the required
book. If the examiner cannot be readily identified from the
records of weekly examinations of electric equipment, the records
are incomplete and in violation of this Section.
75.512-2 Frequency of Examinations
The examination of electric equipment may be made at any time
during each calendar week, even if more than 7 days pass between
examinations.
75.513-1 Electric Conductors; Size
If power cables are manufactured in accordance with the Insulated
Cable Engineers Association (ICEA) standards, the ampacity tables
by the ICEA shall be used for determining compliance with this
Section.
75.514 Electrical Connections or Splices; Suitability
This Section requires that conductors be joined together with
clamps, connectors, track bonds, or other suitable connectors to
provide good electrical connections. Splices made by twisting
conductors together or by tying knots in conductors, splices that
have bare or exposed conductors, or splices that heat or arc
under load shall constitute noncompliance.
When splices are made in insulated conductors, the conductors
must be reinsulated with insulating materials similar to the
original. Flame-resistant insulating material should be used to
replace flame-resistant insulation. Glass, asbestos, or other
heat-resistant material should be used to replace high
temperature insulation.
Feeder wires shall be joined together by proper feeder-wire
splices. Wire rope clamps will be acceptable for splicing feeder
wire; however, a minimum of two clamps of the proper size should
be used in making each splice. The wire rope clamps should be
examined periodically for tightness.
February 2003 (Release V-33) 62