TM 5-628/AFR 91-44
CHAPTER 14
MISCELLANEOUS TRACK APPLIANCES
b. During routine track inspections the general
14-1 Track scales.
condition of the bonds, ground wires and connec-
The inspection, maintenance, and calibration of
tions shall be observed. Loose or missing bonds or
railroad of railroad track scales are covered in the
connections shall be repaired immediately to meet
Association of American Railroads "Scale Hand-
the requirements of TM 5-850-2/AFM 88-7, Chap.
book" which is published annually as a part of the
2. The occurrence of excessive corrosion in the ter-
AREA Manual For Railway Engineering. Track
minal areas of the bond wires and ground wires in-
scales should be inspected and calibrated periodi-
dicates a need for cleaning, repair, or replacement.
cally in accordance with the recommendations
Bonds and grounds shall be replaced if there exist
given in the "Scale Handbook."
a large difference in electrical potential between the
rails.
14-2. Bonded and grounded track.
a. Certain tracks used for the loading/unloading
14-3. Derails.
of fuels and ordinance are required to be bonded
a. Derails shall be maintained in good
and grounded (TM 5-850-2/AFM 88-7, Chap. 2).
condition.
During maintenance of bounded and grounded
b. Derails shall be kept clean and painted in
track care shall be taken to maintain the integrity of
order to be readily visible to operating personnel.
the rail bonds, ground rods, and connections.
14-1
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