Tagged: dust explosion pentagon

Is Your Dust Combustible? How to Determine Combustibility

Suspended dust particles in dim industrial light, creating a dramatic effect.

Is flour a combustible dust? Your insurance auditor just flagged flour dust in your facility, and you’re wondering if they’re right to be concerned. The answer determines your entire compliance strategy. Key Takeaways: Published data exists for 400+ materials, check NFPA 660 Annex C before paying for testing Organic materials under 420 microns are combustible … Read more

Combustible Dust Classification: Kst Values, Dust Classes, and Explosion Severity

Lab setup with a 20-liter sphere for dust explosion test, dramatic lighting.

Combustible dust classification determines whether your dust collector needs basic venting or a $150,000 explosion isolation system. Your sizing calculation depends on a number most EHS managers can’t find in their documentation, the Kst value that determines whether your material explodes like flour or aluminum powder. Key Takeaways: Kst values range from 0-300+ barĀ·m/s, with … Read more

Dust Explosion Pentagon: The 5 Elements Required for a Dust Explosion

Combustible particles and fire in a dramatic confined setting.

Combustible dust pentagon models show five specific conditions that create deadly explosions, unlike the fire triangle’s three elements. The fire triangle only explains three elements of combustion, but dust explosions need five specific conditions to kill workers. Key Takeaways: The dust explosion pentagon requires fuel, oxygen, ignition, dispersion, and confinement, two more elements than fire … Read more