When liquid propane is filled in tanks, what percentage is it typically filled to for expansion purposes?

Liquid propane tanks are typically filled to about 80% of their total capacity. This practice serves an important safety purpose, allowing space for the propane to expand as temperatures rise. Propane is sensitive to temperature fluctuations; as it heats up, it expands and requires additional space to accommodate this change. If the tank were filled to a higher percentage, there would be a risk of overpressure and potential hazards, as liquids cannot be compressed in the same way gases can.

Filling tanks to this 80% level is a standard industry practice intended to prevent safety issues associated with pressure buildup, ensuring that there is enough space for the propane vapor to form within the tank. This percentage aligns with guidelines established by regulatory bodies and safety standards governing the storage and handling of liquid propane. Understanding this principle is crucial for those involved in propane handling and storage to maintain safety and efficiency in operations.