Vapor dispersion involves which action?

Vapor dispersion involves which action?

• A. Sucking Up the Product with a Sponge or Pad
• B. Pushing Vapors with a Fog Stream
• C. Dilution by Adding Water
• D. Covering with a Blanket of Foam to Contain Vapors

Answer: (B)

Vapor dispersion means creating air movement to push the vapor away from the release area and mix it with surrounding air, reducing the concentration where people could be exposed. A fog stream accomplishes this by spraying a fine mist that circulates in the air, generating turbulence and entraining ambient air. That motion carries the vapor plume away from responders and dilutes it as it spreads, helping to lower the hazard at a given location. Absorbing the product with a sponge or pad removes liquid rather than moving the vapor, so it doesn’t achieve dispersion. Dilution by adding water can lower concentration but isn’t the mechanical dispersion action being described here. Covering with a foam blanket aims to contain and seal vapors rather than disperse them, which is the opposite of dispersion.

Vapor dispersion means creating air movement to push the vapor away from the release area and mix it with surrounding air, reducing the concentration where people could be exposed. A fog stream accomplishes this by spraying a fine mist that circulates in the air, generating turbulence and entraining ambient air. That motion carries the vapor plume away from responders and dilutes it as it spreads, helping to lower the hazard at a given location.

Absorbing the product with a sponge or pad removes liquid rather than moving the vapor, so it doesn’t achieve dispersion. Dilution by adding water can lower concentration but isn’t the mechanical dispersion action being described here. Covering with a foam blanket aims to contain and seal vapors rather than disperse them, which is the opposite of dispersion.