VAPOR INTEGRITY TEST--Continued
VACUUM TEST PREPARATION
Use extreme caution when walking or working on the top of
semitrailer. Walkway can become slippery due to moisture
or fuel spillage. Failure to follow this warning may result
in serious injury.
Before performing the pressure or vacuum test, the semitrailer
must be grounded to an approved (earth) ground and must be
safe to proceed. Failure to follow this warning may cause a
spark to ignite, resulting in serious injury or death to personnel.
Make sure tank and piping system are free of all liquid and that
tank is purged of all fuel vapor (implement the cleaning
procedures, as applicable, refer to TB 43-0212). Failure to follow
this warning may cause a spark to ignite, resulting in serious
injury or death to personnel.
Open manhole cover (2), install test plate (3), and fasten securely.
Ensure clamp ring (4) for manhole cover (2) is fastened securely.
Ensure both 3-in. (diameter) cleanout caps (1) are fastened securely.