TM 5-5430-212-13&P
a.
Equipment
(1)
Water supply 100 GPM
(2)
Smooth area for testing and draining water.
(3)
Water hose, at least 2" ID and 50’ long to facilitate rapid filling and draining.
(4)
Two gages, 30 PSI capacity (gage should be checked periodically).
(5)
Gage hose with i" ID x 50’ long to connect both gages with petcock at tank flow tube.
b.
For tank containers 7’ 4" flat width, the test pressure is:
(1)
Initial pressure
-
4 PSI and torque bolts to 70 ft. lbs.
(2)
Stand
-
7 PSI for 2 hours
(3)
Maximum pressure
-
12 PSI
(4)
Rise to maximum
-
10 min. from 7 to 12 PSI
c.
Place tank in test area, making certain that all the air has been expelled by flattening the tank completely with the
air relief valve open. Close air relief valve before beginning test.
d.
Bleed air off filling line to prevent air from entering tank. Attach supply hose securely. Then attached i" hose to
petcock on flow tube. Close petcock, turn on water.
e.
After tank is partially full, approximately two feet high, open petcock on flow tube and bleed air off i" hose and
attach both gages. Open petcock and fill.
f.
When the water pressure in the tank reaches 4 PSI, shut off water supply. Retorque all screws to recommended
torque. Proceed watching gages carefully. At 7 PSI immediately shut off water supply and allow tank to stand for
2 hours. This is to allow the tank to stretch and adjust to higher pressure.
After the two-hour period open supply valve and proceed, throttling down supply valve so that there will be
approximately a 10 minute rise from 7 PSI to 12 PSI.
g.
When test goes beyond 7 PSI, all personnel should be kept at a minimum of 50 feet away from tank. A failure at
high pressure could cause injury.
h.
Immediately upon reading 12 PSI, close the supply valve and open the drain valve. Do not let the tank stand at 12
PSI for any length of time as this may overstress the internal cord structure.
Change 3 3-13
