When withdrawing refrigerant for storage during major repairs, what must be ensured regarding the containers?

When withdrawing refrigerant for storage during major repairs, it is essential to ensure that the containers are approved by the US Department of Transportation (DOT). This requirement exists because refrigerants are classified as hazardous materials, and their transportation and storage must adhere to strict regulations to ensure safety standards are met. These regulations cover the design, construction, and maintenance of the containers to prevent leaks, ruptures, or other hazards that could arise from improperly stored refrigerants.

Furthermore, DOT-approved containers are specifically designed to handle the complexities associated with refrigerants, including pressure and temperature variations that can occur during storage. Using approved containers helps ensure compliance with federal regulations and promotes safe handling practices, thereby protecting workers, the environment, and the general public from potential dangers associated with refrigerant exposure.