Find out in 2 minutes if your facility requires a DHA under NFPA 660 — the new consolidated standard for combustible dust safety.
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As of December 6, 2024, NFPA 660 consolidates all combustible dust standards into one comprehensive document.
NFPA 660 replaces NFPA 652, 61, 484, 654, 655, and 664. One standard now covers all industries handling combustible dust — from food processing to metalworking.
The Dust Hazard Analysis requirement remains. If your facility handles combustible particulates, you need a DHA — and it must be revalidated every 5 years.
If your last DHA was completed in 2020 or earlier, you're due for revalidation. Our screening tool helps you assess your current compliance status.
Three simple steps to understand your DHA requirements
Our guided questionnaire checks for exemptions and identifies your materials, processes, and risk indicators based on NFPA 660 criteria.
Receive a clear assessment: No DHA needed, conduct your own DHA with our tool, or consult with a qualified expert for complex situations.
Download your PDF report, use our free DHA documentation tool, or connect with vetted consultants from our expert directory.
NFPA 660 applies to any facility handling combustible particulates
Our 2-minute screening assessment will tell you exactly what you need — whether that's our free DHA tool or a consultation with an expert.