At what maximum temperature can refrigerant be stored when a container is no more than 80% full?

The correct choice is based on the understanding of refrigerant safety and storage practices. When refrigerants are stored in containers that are not completely full, the liquid refrigerant occupies only 80% of the container, which allows for thermal expansion.

For most refrigerants, specific temperature-pressure relationships dictate safe storage levels. The maximum temperature of 125°F for a container that is 80% full ensures that the pressure within the container does not exceed safe limits. Exceeding the maximum temperature could lead to increased pressure that may risk container integrity or lead to leaks.

Generally, manufacturers provide guidelines based on both the type of refrigerant and the container's design. Sticking to established temperature limits is crucial for maintaining both safety and compliance with regulations concerning refrigerant handling and storage. Additionally, higher temperatures could accelerate chemical breakdown of certain refrigerants, leading to potential issues with system performance when the refrigerant is eventually used.

This option recognizes the balance between operational safety and equipment integrity, confirming it as the appropriate choice for refrigeration technicians when considering the safe storage of refrigerants.