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.