Question 40 of 120

During unloading, a valve becomes stuck partway open and product keeps flowing after you try to stop it. What should you do?

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Leave the vehicle unattended to get a wrench from the shop a few minutes down the road
Disconnect the hose while product is still flowing
Use the emergency shutoff to stop the flow and contain the spill, then get help
Continue unloading as if nothing happened

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Correct answer to question 40 (Tank Vehicles): Use the emergency shutoff to stop the flow and contain the spill, then get help

Why

The emergency shutoff exists exactly for a moment like this, to stop the flow when the normal valve fails, and containing what has already spilled comes before leaving to find other tools.

Updated: November 2026

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During unloading, a valve becomes stuck partway open and product keeps flowing after you try to stop it. What should you do?

Why

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