Specifications

TM9-2330-384-14&P
5-8.
VAPOR INTEGRITY TEST (Con't).
(21) Open rear sump drain (2) and butterfly valve (1), and
return tank pressure to normal.
(22) Repair piping leak (para 4-80), and return to step 17.
(23) Visually locate tank barrel leak (check cleanout
caps, manhole gasket, precheckvalve circuit,joints,
------
andseals).
(24)
Return tank and piping system to atmospheric
pressure by opening rear sump drain (2) and butterfly
valve (1).
(25)
Repair tank barrel leaks, and return to step 17.
(26)
Close emergency valve (29) with top lever in roadside cabinet. Return discharge piping to atmospheric
pressure by opening butterfly valve (1).
29
(27)
If pressure does not drop in five minutes, go to step 30. If pressure drops, go to step 28.
(28)
Return entire tank and piping to atmospheric pressure by opening rear sump drain (2) and butterfly valve (1).
NOTE
Although an emergency valve leak does not constitute a "K" stamp failure if the leak
is internal, proper emergency valve function is still required for safe tanker operation.
(29)
Repair emergency valve leak (para 4-74), and return to step 17.
(30)
If pressure does not drop, emergency valve is maintaining a pressure differential without leakage.
Change1 5-35