Quantcast VACUUM TEST PROCEDURE (Cont) - TM-9-2330-330-14-P0774

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TM 9-2330-330-14&P
VAPOR INTEGRITY TEST--Continued
0168 00
36.
Close manifold drain valve (29) and monitor gage (35) on regulator assembly (12).
37.
Wait 5 minutes to verify that the vacuum reading on gage (35) remains stable. If the vacuum does
not increase, go to step 40. If the vacuum reading increases more than 0.5 in. wc, emergency
valve is leaking, go to step 38.
CAUTION
Although an emergency valve leak does not constitute a
K stamp (indicating compliance with DOT 49CF180.407 (h))
failure if the leak is internal, proper emergency valve operator
function is required for safe tanker operation.
38.
Return tank and piping system to atmospheric pressure by opening manifold drain valve (29) and
emergency valve A (25).
39.
Repair emergency valve in accordance with WP 0164 00. Restart test at step 1.
NOTE
Do steps 40 and 41 after test has been completed.
40.
Return tank and piping system to atmospheric pressure by opening manifold drain valve (29) and
emergency valve A (25).
41.
Close all valves.
NOTE
After successful completion of various tests, DOT
regulation 49CFR180.415 requires that a tanker be stamped
with the appropriate letter ("K" stamp for leak test), as well
as the test date (month and year).
END OF TASK
0168 00-22



 


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