Only alcohol-type foam shall be used on fires in water-soluble solvents and polar solvents. Manufacturers of foam concentrates that are manufactured for protection of such hazards shall be consulted for applicability. On fires in water-soluble solvents and polar solvents, which type of foam should be used?

Only alcohol-type foam shall be used on fires in water-soluble solvents and polar solvents. Manufacturers of foam concentrates that are manufactured for protection of such hazards shall be consulted for applicability. On fires in water-soluble solvents and polar solvents, which type of foam should be used?

• A. Alcohol-type foam.
• B. Protein-type foam.
• C. AFFF foam.
• D. Fluoroprotein foam.

Answer: (A)

When fighting fires in water-soluble and polar solvents, you need a foam that can withstand the solvent itself without breaking down. Alcohol-type foam is formulated to resist attack from alcohols and similar polar solvents, maintaining a stable blanket and film so the foam can cover the surface, cool the fuel, and suppress vapor release. Other foam types are typically designed for hydrocarbon fires or general use and don’t provide the same resistance to alcohols, so they can break down or be dissolved by these solvents, reducing effectiveness. Because foam products vary in their exact formulations and approvals, it’s important to consult the manufacturer to confirm applicability for the specific solvent hazard you’re dealing with.

When fighting fires in water-soluble and polar solvents, you need a foam that can withstand the solvent itself without breaking down. Alcohol-type foam is formulated to resist attack from alcohols and similar polar solvents, maintaining a stable blanket and film so the foam can cover the surface, cool the fuel, and suppress vapor release. Other foam types are typically designed for hydrocarbon fires or general use and don’t provide the same resistance to alcohols, so they can break down or be dissolved by these solvents, reducing effectiveness. Because foam products vary in their exact formulations and approvals, it’s important to consult the manufacturer to confirm applicability for the specific solvent hazard you’re dealing with.