What are the minimum and maximum LP-gas capacities for cylinders requiring a warning label that are not filled on site?

The correct choice states that the minimum LP-gas cylinder capacity requiring a warning label is 4.2 pounds, and the maximum capacity is 100 pounds. This aligns with NFPA 58 recommendations regarding the labeling of LP-gas cylinders not filled on site.

Cylinders that fall below the 4.2-pound minimum capacity threshold do not necessitate a warning label, as they are considered smaller, more manageable units that typically pose less of a risk. The upper limit of 100 pounds is established to ensure that larger capacity cylinders, which may pose greater safety risks when not filled on site and transported, are adequately labeled to inform users and handlers of potential hazards associated with LP-gas.

The range outlined facilitates both the safe transportation and storage of LP-gas cylinders, as safety measures are particularly crucial for larger capacities. Additionally, it ensures that users are aware of the contents and can take appropriate precautions when handling these cylinders. Thus, choosing the correct limits reflects an understanding of the safety standards set forth to mitigate risks associated with LP-gas usage.