TM 9-2330-329-14&P
VAPOR INTEGRITY TEST--Continued
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7.
If tank is overpressurized, close control shutoff valve (13) and open draincock valve (20) to
reduce tank pressure. When tank pressure has dropped to 6.0 in. 0.5 in. wc, close draincock
valve (23).
8.
Wait an additional 5 minutes, then record the time and final vacuum from gage (35).
9.
If vacuum does not drop on gage (35), tank is leak free. If pressure drops more than 0.5 in. wc,
reevacuate tank and piping system according to steps 3 thru 5 then continue with step 8.
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