In response to a flood scene involving a spring door, which action should you take?

• A. Vent door
• B. Close door
• C. Brace door, close shoring
• D. Ignore the situation

Answer: (C)

When a flood affects a compartment with a spring door, the priority is to keep the space isolated and its bulkhead watertight by securing the door against hydrostatic pressure. A spring door will try to close, but floodwaters can push it open or buckle the frame; bracing the door provides a solid stop that resists that pressure. Closing shoring reinforces the door opening, distributing the load and preventing the door and frame from failing under water pressure. Venting would defeat the isolation you’re trying to maintain, and ignoring the situation risks rapid flooding of adjacent spaces. So, brace the door and close shoring to preserve the integrity of the compartment.