In the event of possible flooding inside a space, personnel must not loosen dogs on which side of the watertight door?

In situations where there is a risk of flooding inside a space, personnel must not loosen dogs on the side opposite the hinges of the watertight door. This is crucial because loosening the dogs on that side can compromise the door's watertight integrity. The hinge side maintains structural support and is designed to secure the door in place. By keeping the dogs tight on the hinge side, it helps to ensure that the door remains sealed and can contain any flooding, preventing the spread of water to other areas.

Additionally, maintaining the dog's positioning on the hinge side is vital for the overall safety and effectiveness of flood control measures. It prevents potential failure of the watertight seal, which is critical for managing water intrusion and maintaining the integrity of the vessel or facility.