The type of tank carrier designed to transport flammable liquids and Class B poisons is known as:

• A. MC 306/DOT 406
• B. MC 312/DOT 412
• C. MC 338
• D. Intermodal portable tank

Answer: (A)

The correct choice refers to the MC 306/DOT 406 tank carrier, specifically designed for transporting flammable liquids and Class B poisons. This type of tank is well-suited for carrying materials that require a greater level of containment and safety due to their hazardous nature.

The design of the MC 306/DOT 406 includes a lightweight construction that allows for efficient transport but also incorporates safety features to handle the volatility and risks associated with flammable materials. The tanks are typically insulated and come with a specific built-in structure to mitigate risks such as spills or leaks, which is vital when transporting dangerous goods.

Other tank types listed serve different purposes; for instance, the MC 312/DOT 412 tank is used for transporting corrosives, while the MC 338 is designed for transporting cryogenic liquids. Intermodal portable tanks are versatile but not specifically tailored for flammable liquids in the same manner as the MC 306/DOT 406. Understanding the specific capabilities and intended use of these carriers is crucial for proper handling of hazardous materials.