How is the effectiveness of Hard boom typically rated in oil containment?

The effectiveness of hard boom in oil containment is rated primarily by its height and design. The height of the boom is crucial because it needs to extend above the water surface to effectively contain the oil and prevent it from spilling over. The design is equally important, as it determines how well the boom can withstand environmental conditions such as wind, waves, and currents while maintaining the integrity needed to control oil spills.

The combination of height and design allows hard booms to create a barrier that captures and holds oil in a defined area, which is essential for effective cleanup operations. A well-designed boom that is appropriately tall will ensure that a greater volume of oil is contained, preventing it from spreading further and complicating the response efforts.

Other factors such as materials and cost-efficiency do play a role in the overall assessment of booms, but they do not directly influence the primary function of containment effectiveness as much as height and design do.