In damage control, positive pressure is the practice of maintaining a higher air pressure inside a safe space than adjacent spaces to prevent intrusion of what?

In damage control, positive pressure is the practice of maintaining a higher air pressure inside a safe space than adjacent spaces to prevent intrusion of what?

• A. Water
• B. Temperature
• C. Smoke or gas
• D. Noise

Answer: (C)

Positive pressure creates a higher air pressure inside a safe space than in the surrounding areas, so air tends to flow out of the protected compartment through any leaks rather than allowing outside air to rush in. That outward flow acts as a barrier against contaminants trying to invade the space. In damage control, this technique is used to keep smoke and toxic gases from entering the safeguarded area. Since air moves from higher to lower pressure, maintaining the interior at higher pressure helps push smoke and gas away, helping maintain visibility and air quality for personnel and protecting critical equipment. Water intrusion and other factors aren’t addressed by this pressure difference in the same way, and noise isn’t affected by maintaining interior pressure.

Positive pressure creates a higher air pressure inside a safe space than in the surrounding areas, so air tends to flow out of the protected compartment through any leaks rather than allowing outside air to rush in. That outward flow acts as a barrier against contaminants trying to invade the space.

In damage control, this technique is used to keep smoke and toxic gases from entering the safeguarded area. Since air moves from higher to lower pressure, maintaining the interior at higher pressure helps push smoke and gas away, helping maintain visibility and air quality for personnel and protecting critical equipment. Water intrusion and other factors aren’t addressed by this pressure difference in the same way, and noise isn’t affected by maintaining interior pressure.