Minnesota CDL Hazmat Practice Test

You have loaded a hazardous material into a cargo tank. What must you do before you drive away?

Keep one manhole open for ventilation Close all manholes and valves, ensuring they are tightly secured and free of leaks Remove the placards so the tank can equalize pressure Purge the system into the atmosphere

Correct Answer:

Close all manholes and valves, ensuring they are tightly secured and free of leaks

Explanation:

Before driving, you must close and secure all manholes, valves, and other openings to ensure nothing leaks during transit.

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