NFPA 68 Dust Explosion Vent Area Calculator
Industrial deflagration venting & process safety: Size explosion relief rupture panels ($A_v$) for dust collectors, silos, and spray dryers per the standard NFPA 68 equations.
Vessel Geometry & Design Strength
Dust collector, bin, or silo
Vessel structural pressure limit
Rupture panel rating (typ 0.1 bar)
Combustible Dust Characteristics
Wood/grain: 100–150; Metal dust: 300+
Required Vent Area & Panel Sizing
Required Vent Area A_v:
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m² (relief aperture)
Standard Panel Size:
--
recommended layout
Dust Hazard Class:
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St Class
L/D Elongation Corr:
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multiplier
Recoil Thrust Force:
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kN dynamic reaction
NFPA 68 Compliance Verification
Overpressure Margin ($P_{red} - P_{stat}$):
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External Fireball Radius $R_{fb} = 3.1 \cdot (V)^{0.35}$:
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