Combustible Dust | Dust Explosions | Nederman
Combustible dust is fine particulate material capable of igniting or exploding when dispersed in air under suitable conditions. This technical guide organizes the hazard around dust identification, accumulation control, ignition prevention, source capture, explosion isolation and applicable ATEX or NFPA frameworks.
Technical profile
| Manufacturer / publisher | Nederman |
|---|---|
| Category | Cleaning, recycling & protection |
| Updated | 2026-10-11 21:40:53 |
Materials that can form explosive dust
Examples include wood, textiles, plastics, flour, sugar, grain, tobacco, spices, aluminium, magnesium, titanium, coal, carbon, chemicals, pharmaceuticals and rubber.
A material that is safe in bulk form may behave differently as fine airborne particulate, so the actual process dust must be assessed.
Where dust accumulates
Dust can collect inside, on and around machines and products, as well as on rafters, roofs, suspended ceilings and inside ducts. Remote, elevated surfaces are especially easy to overlook.
A workplace assessment should identify where dust is generated, whether it is combustible and where a secondary cloud could form after an initial event.
Prevention and mitigation
Source-capture extraction limits spread by collecting dust close to its point of generation. A suitable collector may be combined with explosion-isolation flap valves to reduce propagation through connected ductwork.
Physical barriers, ignition-source control, process changes that avoid excessively fine particles and disciplined housekeeping all contribute to risk reduction. Equipment selection must follow the facility risk assessment.
Regulatory references
European references cited for explosive atmospheres include ATEX 2014/34/EU for equipment and 99/92/EC for workplaces.
North American references cited include NFPA 61, 69, 652, 654 and 664. Compliance decisions require the current adopted edition, local authority requirements and competent explosion-protection engineering.