CDL · Hazardous materials
Your truck's engine powers the pump used to unload a compressed gas. At what point should you shut the engine off?
Correct answer: Once the transfer ends, before the hose is disconnected.
Answer options
- AAfter every hose has been disconnected and stowed away
- BOnce the transfer ends, before the hose is disconnected Correct
- CAfter the trailer has been uncoupled from the tractor
Why
The engine may run only while it is driving the transfer pump. As soon as the product has been moved, turn the engine off, and only then disconnect the loading or unloading hoses.
About this question
Topic: Hazardous materials License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
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This question is part of Loading and Unloading HazMat (32 questions). Take the full set and check your score.
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