What is one of the requirements to re-enter a main space during a fire?

The requirement for re-entering a main space during a fire is fundamentally tied to ensuring that the safety of personnel is prioritized and that effective fire suppression measures are in place. One of the most critical actions after a fire incident is the activation of Aqueous Film Forming Foam (AFFF) systems, which are a crucial part of firefighting efforts.

When both AFFF dumps are activated, it indicates that a firefighting strategy is actively being implemented to suppress the flames and manage the fire situation. This action significantly decreases the risk involved in re-entering the space, as it helps to mitigate the fire's intensity and spread.

Having both AFFF systems operational provides a protective barrier that can help extinguish residual flames and control smoke and hazardous conditions, making it safer for personnel when they are required to return to the space for damage control or further firefighting efforts. Thus, this requirement reflects a commitment to safety and effective emergency response procedures in maritime operations.