NFPA 660 Compliance Checklist
— 18 Critical Points
The exact checklist we use when auditing manufacturing facilities across the Southwest. Same process whether it’s a 10-person weld shop or a $100M aerospace plant.
NFPA 660 took effect January 1, 2026 — if you haven’t addressed it yet, now’s the time.
NFPA 660 Is Now the Standard — Here’s What That Means
On January 1, 2026, NFPA 660 became the single, consolidated combustible dust standard — replacing NFPA 652, 654, 61, 484, 664, and parts of 68. If your facility generates combustible dust, this is the standard your fire marshal and insurance carrier are now referencing.
That means every facility with combustible dust must have a completed Dust Hazard Analysis (DHA), proper explosion protection, and full documentation — or face OSHA citations and insurance complications.
Curious how prepared the industry actually is? We called 38 dust collection companies and asked about NFPA 660. The results were alarming.
The short version: If your current system was designed to the old standards, you’re probably close. But “close” isn’t compliant. The gaps are where the citations and insurance problems live.
Most Facilities Are Only 60–80% Compliant
We’ve audited over 200 facilities across Arizona, California, Nevada, New Mexico, and Utah in the last 12 months. The average plant is about 70% compliant with current standards — but only 12% are fully ready for NFPA 660.
The remaining 30% is where the real risk lives — and where most citations come from. Common gaps include missing or outdated DHAs, inadequate explosion protection, and incomplete documentation that won’t hold up during an inspection.
Understanding your dust’s Kst value and explosion severity classification is the foundation of everything NFPA 660 requires. If you don’t know your Kst, you can’t properly size venting, suppression, or isolation — and you can’t be compliant.
Inside Your Free NFPA 660 Checklist
How to know if your current DHA is still valid under NFPA 660
The 3 explosion protection methods that actually work at altitude (most vendors get this wrong)
The hidden housekeeping requirement that triggers 90% of combustible dust citations
Exactly what documentation insurance companies now demand for 2026 renewals
The one test most facilities skip that can shut down your plant for weeks
How to size explosion venting correctly the first time (no expensive rework)
The employee training record template that passes every OSHA audit
More items that separate “compliant” from “bulletproof”
Industries That Need This Checklist
If your operation generates dust from any of these materials, NFPA 660 applies to you — and this checklist will show you exactly where you stand.
Why Facilities Trust This Checklist
This isn’t a generic OSHA checklist you found on Google. This is the exact 18-point system we use when we walk into a facility that can’t afford a single day of downtime.
Over 200 facilities across the Southwest have used this exact process to get fully compliant — many of them before they even became clients. That’s why we give it away for free. When you see how thorough it is, you’ll know exactly who to call when you’re ready for the next step.
We give this away because we believe in earning trust before earning business. Every system we design is backed by our pass-or-free compliance guarantee — your system passes inspection, or we fix it at no cost.
Already know you have gaps? Skip the checklist and schedule a free site assessment. We’ll walk your facility, identify every compliance gap, and give you a clear plan with real numbers — no pressure, no runaround.
Found Gaps? Here’s What Comes Next
Get a DHA If You Don’t Have One
A Dust Hazard Analysis is the foundation of NFPA 660 compliance. It identifies your combustible dust hazards with lab-tested data — not guesswork. Wondering what it costs? We break it all down in our DHA cost guide.
Engineer the Right System
Based on DHA results, our dust collection engineering team designs a system that’s built to pass — not one you hope passes. Full 3D CAD, airflow calculations, and compliance documentation included. Curious about costs? See our 2026 cost guide.
Install, Verify, and Document
Professional installation with field verification at key milestones. We test everything before calling it done and hand you a complete inspection-ready documentation package. Then our maintenance programs keep it compliant long-term.
Failed a DHA? We Have a Roadmap for That
If a DHA reveals problems with your current setup, don’t panic. We wrote a clear 30-day fix-it roadmap for failed dust hazard analysis with real costs, timelines, and common mistakes to avoid.
Need to spread the investment? We offer financing options with zero down and fixed monthly payments.
Get Your Free NFPA 660 Checklist
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Related Resources
Explosion Protection & DHA Testing
What Does a DHA Cost?
What Does a Dust Collection System Cost?
Understanding Kst Values & Explosion Severity
We Called 38 Companies About NFPA 660
Failed DHA? Here’s Your Fix-It Roadmap
Return Air vs. Exhaust: Which Is Right?
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Rather Have Us Find the Gaps For You?
Skip the self-audit. We’ll walk your facility, identify every compliance gap, and give you a clear plan with real numbers. Free assessment, zero obligation — backed by our pass-or-free guarantee.
Serving manufacturing facilities across Arizona, California, Nevada, New Mexico, and Utah.
