Which foam application technique is best for suppression on a pool of flammable liquid?

The roll-on foam application technique is ideal for suppressing a pool of flammable liquid because it allows for the foam to be applied directly on the surface of the liquid. This technique involves rolling the foam across the surface, which effectively displaces the flammable vapors and creates a barrier that can help prevent ignition and fire spread. By applying the foam in this manner, it not only suppresses the flames but also prevents re-ignition, maximizing the effectiveness of the firefighting effort.

The roll-on technique is particularly effective on flammable liquids because it adheres well to the surface and spreads out over the liquid fire, forming a blanket that cools the burning material and smothers the flames. This is crucial in scenarios involving flammable liquids, where direct application can make a significant difference in controlling and extinguishing the fire efficiently.

Other techniques, while useful in certain contexts, may not provide the same level of effectiveness in this particular scenario. Drop down or rain down applications may not achieve the needed direct coverage on the flammable surface and can result in foam dispersing before making contact with the liquid. The bank-shot method is more suitable for directing foam to areas that are difficult to reach and may not effectively cover the entire surface of the burning liquid