Vapor dispersion involves using water spray or fans to intentionally move vapors away from certain areas.

• A. False
• B. Sometimes
• C. True
• D. Not applicable

Answer: (C)

Vapor dispersion is an intentional control technique that uses air movement and water spray to move vapors away from occupied or sensitive areas. By directing airflow with fans or applying a water spray to knock down and dilute the vapor plume, responders aim to reduce concentration where people could be exposed and to steer the plume toward a safer exhaust path, all coordinated through incident command and monitoring. This approach is used only when it’s evaluated as beneficial and safe in the given conditions, since pushing vapors elsewhere can create exposure in other locations if not properly managed. That’s why the statement is true.