A practical guide to understanding how NFPA 660 changes the evaluation of combustible metal dust hazards and what it means for wet vs. dry dust collection.
July 28, 2026
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Combustible metal dust presents unique hazards that differ significantly from organic dusts, including higher explosion severity, lower ignition energies, and potential reactivity with water. This white paper examines the key requirements of NFPA 660 and explains how the standard approaches the identification, evaluation, and control of combustible metal dust hazards.
