M978 Tanker Operating Procedures (Cont)
2 - 2 2 . l o a d t a n k e r w i t h f u e l ( c o n t ) .
Top loading will be done in emergency situations
only, when bottom loading is not possible, and only by
order of the Unit Commander. Top loading causes
static electricity and vapors. To prevent fire or
explosion, no smoking, flame, sparks, glowing or hot
objects allowed within 50 ft (15 m) of vehicle. Fire or
explosion may cause personal injury or death,
l To prevent explosion caused by electrostatic charge,
ground self and equipment before opening manhole
l Drain and flush tank compartment, filter-separator,
and piping system with new product when changing
to fuel or grade different from last one carried (para
2-26). Notify organizational maintenance to change
all filter elements. Failure to do so may result in
Use top loading only when bottom loading is not
possible. An observer should be placed at the
manhole cover opening as a safety precaution.
Fuel should only be loaded through manhole when
bottom loading cannot be done. Tank should be
bottom loaded whenever possible (para 2-22.a or
Refer to FM l0-71 for general operating instructions
for tanker vehicles.
If equipment malfunctions, check that all steps of
procedure have been performed in proper order. If
equipment still malfunctions, do troubleshooting
When top loading, slowly begin the flow of product
and continue at a reduced rate until the lower end of
the drop tube or discharge hose is covered with
product. Then gradually increase the flow rate and
fill the tank.
Prepare tanker for operation (para 2-20).