Spray Booth Fire Protection Calculator

Calculate spray booth fire protection requirements per NFPA 33 including ventilation, suppression, and separation distances.

Input Parameters

Results

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Required Exhaust Volume
CFM
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Sprinkler Density Required
gpm/ft²
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Booth Floor Area
ft²
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Separation from Ignition Sources
ft
Note: NFPA 33 requires automatic fire suppression in all spray booths. Minimum face velocity is 100 fpm for conventional booths, 60 fpm for electrostatic. Interlock exhaust fan with spray equipment. All electrical within booth must be classified per NFPA 70 Article 516.

Reference

NFPA 33 Spray Booth Protection: Exhaust CFM = Face Area (ft²) * Face Velocity (fpm) Face velocity >= 100 fpm (open face booths, NFPA 33 Sec 7.5) Sprinkler: Extra Hazard Group 2 = 0.40 gpm/ft² (NFPA 13) Separation: 20 ft from Class I solvents, 10 ft from Class II Floor Area = Width * Depth