What is the limit for portable LPG containers that requires a permit?

The correct response recognizes that the limit for portable LPG (liquefied petroleum gas) containers that necessitate a permit is typically defined by weight rather than volume. In the case of LPG, a standard threshold is set at 20 pounds. This means that if an LPG container exceeds this weight limit, a permit is required for its use or storage.

The other options, while related to the handling of LPG, do not align with the weight condition set forth by regulatory bodies. For example, 16.4 oz is significantly below the threshold, and it does not reflect the required permit conditions for LPG containers. The option stating 30 lbs exceeds the limit beyond what is necessary for permitting, and 8.7 SCF, representing a volumetric measure, does not apply to the weight-based regulation for portable LPG containers.

For anyone working with LPG, understanding these limits and when permits are necessary is crucial for compliance with safety regulations and preventing hazards associated with the handling of flammable gases.