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TM 10-5430-242-12&P
0009 00
Change 1
0009 00-2
PMCS Leakage Definitions
It is necessary to know how fluid leakage affects the status of the collapsible fabric fuel tank. The
following are types/classes of leakage needed to be able to determine the status of the collapsible fabric
petroleum tank. Learn these leakage definitions and remember when in doubt, notify supervision.
CAUTION
Report Class III and IV leaks to the supervisor or to unit
maintenance. Failure to heed this caution can damage the
equipment.
NOTE
Equipment operation is allowed with minor leakages (Class I or Class II).
Consideration must be given to fluid capacity in the item/system being
checked/inspected. When in doubt, notify the supervisor.
When operating with Class I or Class II leaks, continue to check fluid
levels as required in the PMCS.
Class I
Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.
Class II Leakage of fluid great enough to form drops but not enough to cause drops to drip from item
being checked/inspected.
Class III Leakage of fluid great enough to form drops that fall from the item being checked/inspected.
Class IV Leakage found under the tank. There is evidence of dampness on the ground around the tank.
Volume of fuel in tank is less than it should be.
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