CDL · Tank vehicles

On a cargo tank in normal use, the MAWP (Maximum Allowable Working Pressure) sets the pressure limit for which part of the tank?

Correct answer: The top.

Answer options

  1. AThe top Correct
  2. BThe middle
  3. CThe bottom

Why

MAWP is defined as the most pressure permitted at the highest point of a cargo tank sitting in its normal operating position. Running a tank above that rating risks leaks or even a rupture.

Tip Use the top as the reference point, because the weight of the liquid itself adds extra pressure lower in the tank.

About this question

Topic: Tank vehicles   License: CDL

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Where it applies: Asked in every state.

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