Combustible Dust Hazards
ASP written lesson, 12 min read. ASP Domain 4: Fire Prevention and Protection
Written with AI help from the rules it covers, then fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.
What you'll learn
- State the five elements of the dust explosion pentagon and what removing each one does
- Explain how a primary event triggers a secondary explosion
- Interpret minimum explosible concentration, minimum ignition energy, layer ignition temperature and Kst as hazard indicators
- List common ignition sources in dust-handling plants
- Choose dust control, ignition control and damage control measures, and name the OSHA rules that apply
What this lesson covers
Why ordinary solids like sugar, wood, flour and metal can explode when they are fine and airborne. The lesson covers the dust explosion pentagon, primary and secondary explosions, the dust properties that rank the hazard, ignition sources, and the three layers of control the Occupational Safety and Health Administration (OSHA) recommends.
This lesson is included with a pass
Written lessons come with every ASP pass, along with the video lessons, the question bank, mocks and the tutor. $80 per exam for 6 months, or $143 for all three for 12 months.