What is the containment size requirement for transfer lines with a diameter of less than 2 inches?

The requirement for containment size for transfer lines with a diameter of less than 2 inches is correctly identified as ½ barrel. This regulation is designed to ensure that any potential leaks or spills from smaller transfer lines can be adequately contained, minimizing environmental impact and improving safety measures.

A containment size of ½ barrel is sufficient for this type of equipment because the diameter indicates that the amount of fluid transferred is relatively small, thus necessitating a smaller containment volume compared to larger lines. This regulation helps facilitate compliance with environmental protection standards and promotes prompt responses to leaks, ensuring that any discharges are contained within manageable limits.

Understanding this requirement is critical as it aligns with broader regulations and safety practices, ensuring that all necessary precautions are taken to protect resources and human health in maritime operations.