For hoses with a diameter of 6 to 12 inches, how much containment is needed?

The requirement for containment when dealing with hoses that have a diameter of 6 to 12 inches is based on regulations intended to prevent environmental contamination in the event of a spill. For these specific hose sizes, the containment needed is calculated to ensure that any potential leakage can be effectively captured.

The correct answer indicates that for hoses with a diameter falling within this range, a containment capacity of three barrels is necessary. This figure is established by considering the maximum potential discharge from the hose over a short period of time, providing a safety margin that accounts for any unexpected leaks or failures in the transfer operation.

Choosing three barrels provides sufficient space to contain the volume that could escape, thereby minimizing the risk of pollutants entering the surrounding environment and ensuring compliance with safety regulations. This is particularly important in marine operations, where even small amounts of spilled materials can lead to significant ecological damage.