Which statement defines Vapor Dispersion?

• A. The process of lowering the concentration of vapors by spreading them out
• B. The process of collecting vapors in a confined space to vent safely
• C. The process of condensing vapors back into liquid in a closed area
• D. The process of igniting vapors to burn off quickly

Answer: (C)

Vapor dispersion in this context is about a vapor returning to the liquid phase within a closed area. When vapors cool or contact cold surfaces, they lose enough energy to condense back into liquid, which removes them from the air and confines the hazard to a liquid form in that space. This is why condensing vapors back into liquid in a closed area best describes how vapor dispersion can reduce airborne vapor hazards. The other ideas describe spreading vapors in air to dilute them, collecting vapors for venting, or burning them off—processes that are different from the condensation-based behavior implied here.