Results
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Explosion Vent Area
ft²
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Abort/Isolation Valve Size
in
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Spark Detection Required
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Recommended Protection
Note: NFPA 654 requires explosion protection for all dust collectors handling combustible dusts. Options include explosion venting (NFPA 68), chemical suppression (NFPA 69), and deflagration isolation. Spark detection per NFPA 654 Chapter 10 is required upstream of collectors. Locate collectors outdoors when possible.
Reference
NFPA 654/68 Dust Collector Protection:
Vent Area (NFPA 68): Av = C*Kst*V^(2/3)*(1+1.54*Pstat^(4/3))/sqrt(Pred-Pstat)
Duct Diameter = sqrt(4*Q/(pi*v))*12, where v=4000 fpm
C = 3.6e-4, Pred = 0.5 bar (typical), Pstat = 0.1 bar
Ref: NFPA 654, NFPA 68, NFPA 69