What is the requirement for disposing of a DOT-39 container?

The requirement for disposing of a DOT-39 container is that it must be evacuated and punctured. This process is important because DOT-39 containers are designed for transporting certain refrigerants and can still hold residual substances that may be hazardous.

By evacuating the container, any remaining refrigerant is removed, which prevents the risk of environmental contamination or accidental release during disposal. Puncturing the container ensures that it cannot be reused and confirms that it is empty, thereby minimizing risks associated with handling pressurized containers. This process aligns with safety regulations governing the disposal of pressurized containers, particularly those holding potentially harmful materials.

In contrast, simply draining all refrigerant does not guarantee that the container is fully empty or safe to dispose of, as there may still be residual pressure or harmful materials left inside. While recycling is a consideration for some containers, the requirement to puncture and evacuate is more critical for ensuring safety and environmental compliance.