- ALaying on their side in the sun
- Secured in an upright position in a well-ventilated area
- CIn the trunk of a car with windows closed
- DWithout caps on the valve stems
Correct answer
Secured in an upright position in a well-ventilated area
Why
Cylinders should be secured upright, valve caps in place, in a well-ventilated area to prevent injury and allow heat dissipation.
The concept behind this question
Once refrigerant is in a cylinder and leaving the site, it is a hazardous material shipment and Department of Transportation rules apply on top of EPA's. Recovered refrigerant goes in a DOT-approved recovery cylinder — grey body with a yellow top — never in a disposable cylinder the refrigerant did not come in. Cylinders must be labelled with their contents, kept within the 80% fill limit, and accompanied by shipping papers. Mixing different refrigerants in one cylinder makes the contents unreclaimable and turns a recoverable asset into disposal cost.
More questions on this topic
Exam-style practice question. Not an official EPA exam question.