Install coupler valve.
Install modified dust plug (fig. 5-16).
Open coupler valve by turning handle to the left.
Insert air nozzle on valve stem and inflate to 6 psig.
Use standard air gage to determine air pressure.
Install lifting yoke (fig. 5-17) and move drum to
leak test station.
5-19. Testing (All Drums).
a. General. Testing is divided into two separate cate-
gories: Pressure Testing and Hydrostatic Testing. These
tests will be conducted as outlined in b below.
b. Test Procedures.
(1) Pressure Test.
(a) Check all adapters and faucet valves to
insure that they are tight and properly seated.
(b) Check all end plate capscrews to insure that
they have been torqued to 30 foot pounds (4.54 m-kg).
(c) Install the air inflation and gaging equip-
ment (fig. 5-16) and inflate the drum to 6 psi (0.42 kg/sq
(d) Spray the inflated drum thoroughly with a
detergent and water solution. After allowing a time lapse
of approximately 5 minutes for normal expansion, add air,
as required, to bring the internal pressure back to 6 psi (0.42
(e) Inspect the drum surface and end playes for
evidence of air leakage (frizzing or bubbling (fig. 5-18)).
check the air pressure after a one hour time lapse and again
after a two hour time lapse. Any loss of pressure from the
original 6 psi (0.42 kg/sq cm) during the second hour will
verify the presence of a leak and a requirement for repair.
Serviceable drums will be drained and thoroughly dried
(2) Hydrostatic Test.
(a) Remove air inflation and gaging equipment
and deflate the drum.
(b) Position the drum with the opening at the top
and fill the drum with water (fig. 5-19).
(c) Continue falling until the internal pressure of
30 psig is attained.
(d) After allowing a time lapse of 5 minutes
after filling to permit normal expansion, add air as required
(fig. 5-16) to bring the internal pressure back to the speci-
(e) Allow the pressurized drums to stand for 30
(f) At the end of the specified stand period check
the external surface of the drum for obvious evidence of
leakage and check the internal pressure for pressure drop
(g) Clearly mark any leak points and return the
unserviceable drum for repair. Serviceable drums will be
drained and thoroughly dried (para 5-20).
5-20. Drying Drum After Testing.
Hot air must not exceed 150° F (66°C).
a. Suspend drum by one end and dry interior with hot
air for approximately 5 minutes, until interior of drum is
completely dry (fig. 5-21).
Water in depressions can be
located by feeling the exterior of
the drum. Where water has settled
the temperature of the drum exte-
rior will be cooler than the sur-
b. Insert 1/2 inch (1.3 cm) L-shaped copper tubing in
depressions to siphon out water. The internal air pressure
will cause the water to flow through the tubing.
5-21. Fogging and Crating Drum (500 Gallon (1893
Liter) Fuel Drums Only).
a. Inflate drum to approximately 1/2 of full size.
b. Attach fogging equipment (fig. 5-22) and spray PE10
light oil into the drum for approximately 15 seconds.
c. Allow drum to remain semi-inflated for 3 to 5 minutes
so that the oil fog covers surface of the inner liner.
d. Release air and fold drum into an S shape. The swivel
plate should be opposite the valve end
5 - 2 4