HVAC - EPA Certification Practice Exam 2025 - Free EPA Certification Practice Questions and Study Guide.

Transporting refrigerant according to Department of Transportation (DOT) standards requires it to be done in an upright position with appropriate labeling, such as a "2.2 non-flammable gas" tag. This is crucial for ensuring safety and compliance during the transportation process. Refrigerants are often classified as non-flammable or low-toxicity gases, which means they can pose risks if not properly secured and identified.

Maintaining the refrigerant in an upright position helps prevent leaks and ensures that the pressure within the container remains stable. The specific labeling with the "2.2 non-flammable gas" tag is critical, as it provides essential information to handlers and emergency responders about the nature of the material being transported, ensuring that proper safety protocols are followed.

Other options, while they may address certain aspects of safety, do not align with the specific requirements set forth by DOT for transporting refrigerants. For instance, transporting in a horizontal position could increase the risk of leaks and is not standard practice. Similarly, using a cooled compartment or sealed vacuum bag does not pertain to the regulations for refrigerant transport and may not provide the necessary identification or stability required during transit.