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TM 9-2330-272-14
Section Ill. GENERAL SAFETY REGULATIONS
Paragraph Title
Page
Number
Safety Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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1-12. SCOPE.
a. Operation and maintenance of any fuel hauling semitrailer can be hazardous due to the flammable and
explosive nature of the load.
b. This section contains a summary of safety regulations which MUST be strictly followed when operating or
maintaining the Ml 31 Series Fuel Tank Semitrailers. Personnel who fail to follow these regulations endanger the
mission, equipment, and lives of themselves and other personnel.
c. Read and become familiar with all WARNINGS in the Warning Summary at the front of this manual.
d. Throughout this manual, WARNINGS are placed as they pertain to specific operational or maintenance
procedures. Read these warnings and follow them exactly.
1-13. SAFETY REGULATIONS.
a. Refer to FM 10-20, FM 10-68, FM 10-69, and FM 10-71 to become familiar with safe fuel handling
procedures.
b. Personnel engaged in the operation and maintenance of the semitrailer must not wear clothing that
generates static electricity. DO NOT wear wool, nylon, silk, rayon, or other similar materials. Remove all contents from
pockets. Wear rubber boots and gloves during fuel loading and unloading.
c. Before loading or unloading fuel, purging tank, or performing any Organizational, Direct Support, or
General Support Maintenance on semitrailer, connect all bonding and grounding connections. Refer to
paragraph 2-13 for information on proper bonding and grounding procedures.
d. Never climb on semitrailer without first touching static ground wire to discharge static electricity from your
body.
e. Under normal circumstances, perform all maintenance on semitrailer outdoors, away from buildings, and
with tank empty. The semitrailer tank should be checked to ensure that it is free of vapors that could ignite during
maintenance activities.
f. If circumstances require that maintenance be performed inside a building, semitrailer tank must be
thoroughly drained and purged, and exterior of semitrailer steam cleaned. Explosimeter test, after purging, must read
in the SAFE zone (para 4-64). Even if semitrailer has tested SAFE with combustible gas indicator set, it MUST be
retested prior to starting work each day and at regular intervals throughout the day. This test can be accomplished by
authorized Organizational or Direct Support Maintenance personnel with an MOS of 77F or equivalent (FM 10-20).
g. To reduce the risk of fire and explosion, DO NOT perform the following operations on semitrailer unless
tank is drained, purged, and exterior of semitrailer steam cleaned:
(1) Replace any component that comes in contact with fuel or vapors (manhole, emergency relief valve,
sump drain, filter-separator, valves, and piping).
(2) Troubleshoot electrical system with any test device other than the ohms scale of a multimeter.
(3) Weld or solder.
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