What does overhaul often require?

Overhaul is a critical phase in fire suppression that involves examining and ensuring that a fire is fully extinguished and that there are no remaining hotspots that could reignite. This process often entails a thorough search for any smoldering materials or hidden fires within structural elements or debris.

Complete saturation by flooding the container, as indicated in the chosen answer, is significant because it ensures that all areas of concern are adequately treated with water or extinguishing agents. This method is particularly effective in dealing with stubborn fires that may not be fully visible, as it helps to penetrate materials and reduce the heat and flammability of any remaining substances.

While other approaches, such as partial saturation or immediate cooling, may have specific applications in certain situations, the emphasis during overhaul is often on ensuring comprehensive coverage to eliminate any potential sources of re-ignition effectively. The safety of personnel and the surrounding environment also plays a role in decisions during overhaul, but the primary objective revolves around complete saturation to achieve thorough extinguishment.