Final answer:
True, only DOT-designated 'refillable' containers can be used to transport recovered pressurized refrigerant. DOT regulations ensure the safety of transporting such materials, as containers must handle pressure and potential energy redistributions safely.
Step-by-step explanation:
The statement that only containers designated 'refillable' by DOT can be used to transport recovered pressurized refrigerant is indeed true. The transport of pressurized substances, such as refrigerants, is strictly regulated by the United States Department of Transportation (DOT) hazardous materials regulations. To ensure safety and prevent potential hazards, specific containers are designed to withstand the pressures involved and to be reused safely. Non-refillable containers might not meet the safety standards and could compromise safety when transporting pressurized gas.
Additionally, the physical behavior of gases under pressure is such that, as explained in Exercise 13.1.1, energies are redistributed resulting in cooling effects, and this aspect must be managed during transport. Pressurized containers enduring changes in temperature or pressure could fail if not properly designed, thus refillable containers are essential for safety in compliance with DOT regulations.