Foam Application Rate Calculator

Calculate foam solution application rate and total quantity per NFPA 11 for hydrocarbon and polar solvent fires

Input Parameters

Results

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Application Rate
gpm/ft²
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Total Solution Flow
gpm
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Minimum Discharge Duration
min
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Total Foam Solution
gal
Note: Application rates per NFPA 11 are minimums. Design should account for burnback resistance, wind effects, and potential delayed application. AR-AFFF required for polar solvent (alcohol-type) fuels.

Reference

NFPA 11 Foam Application Rates (Table 5.2.3.1.1): Hydrocarbon (Type II fixed): 0.10 gpm/ft² Polar solvent (AR-AFFF): 0.10 gpm/ft² Polar solvent (non-AR): 0.20 gpm/ft² Portable application: 0.16 gpm/ft² Minimum discharge duration: Hydrocarbon: 15 min Polar solvent: 20 min Crude oil tank: 55 min