What is the containment requirement for transfer lines with a diameter of 4 to 6 inches?

The requirement for containment of transfer lines with a diameter of 4 to 6 inches is set at 2 barrels. This figure is grounded in regulatory guidelines that aim to prevent environmental contamination from spills during the transfer of hazardous materials. The rationale for having a containment capacity of 2 barrels is based on the potential volume of hazardous materials that could be released during an incident, allowing for adequate containment and minimizing environmental impact. Establishing this standard ensures that facilities engaging in the transfer of fluids have the necessary infrastructure to comply with safety regulations and respond effectively to any spills that may occur, thus protecting marine and coastal environments.