MC 306 / DOT 406 designation identifies which type of tanker car?

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Study for the North Carolina Firefighter Hazardous Materials Exam. Access flashcards and multiple choice questions with hints and explanations. Get thoroughly prepared for your certification!

Multiple Choice

MC 306 / DOT 406 designation identifies which type of tanker car?

Explanation:
The designation MC-306 / DOT-406 identifies a low-pressure liquid cargo tank car. These cars are built to carry liquids at a low internal pressure (not designed for high-pressure gas service), which helps limit vapor release and simplifies safety relief features. This distinguishes them from cars designed for higher-pressure gases (pressurized tank cars) and from those meant for cryogenic, very cold liquids. In short, MC-306 / DOT-406 corresponds to the low‑pressure tank car category.

The designation MC-306 / DOT-406 identifies a low-pressure liquid cargo tank car. These cars are built to carry liquids at a low internal pressure (not designed for high-pressure gas service), which helps limit vapor release and simplifies safety relief features. This distinguishes them from cars designed for higher-pressure gases (pressurized tank cars) and from those meant for cryogenic, very cold liquids. In short, MC-306 / DOT-406 corresponds to the low‑pressure tank car category.

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