TM 10-4930-204-13
(g) Personnel engaged in purging operations will:
1.
Not wear wool, nylon, silk, rayon or other
simliar static electricity-generating clothing.
2.
Wear clean cotton clothing with no metal
buttons or fittings.
Remove all contents from pockets.
3.
Wear rubber boots.
4.
Use cotton waste for cleaning purposes.
Other
material may generate static electricity.
(4) Preparation of equipment.
(a) Completely drain each fuel tank or fuel tank
compartment, all piping, pumps, meters, filters, and segregators
as applicable.
(b) Remove all accessory items such as gages and
floats which might entrap fuel.
(c) Close or seal all drains.
(It may be necessary to
locally fabricate covers for some types of drains.)
(d) Fill fuel tank and overflow for five minutes with
cold water.
(e) Drain fuel tank completely.
(f) Close or seal drains.
Insufficient amount of chemical will result in an
incomplete purging.
Accurate computations of
amount of chemical to be added must be made prior
to the purging.
Once purging has begun, do not
stop until process if complete.
(g) For each 100 gallon (379 liter) capacity, add 40
fluid ounces (1200 ml) to the fuel tank.
(This is equivalent to 8
fluid ounces (240 ml) of concentrate for a 20 gallon (76 liter) fuel
tank.)
(h) Fill fuel tank to top with water.
Do not
overflow.
(i) Insert air line into fuel tank filler neck opening
and agitate solution with 3 to 5 psi (0.21 to 0.35 kg/sq cm) of air
for 5 minutes.
Frequently air hose around in tanks, covering as much
area as possible, especially near the bottom and around baffles.
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