Maintaining metalworking operations that comply with safety regulations is critical. If you’re changing operations, adding equipment, or reviewing current safety protocols, a dust hazard analysis (DHA) may be essential for your business.
What Is a DHA and Why Would My Facility Need It?
A dust hazard analysis is a formal evaluation used to assess the possibility of a fire or explosion being caused by combustible dust. Professionals conducting an examination will come on site to review your business’s day-to-day operations and provide an analysis of existing safety measures along with recommendations to further reduce risk.
An on-site DHA helps satisfy several regulatory requirements in the metal fabrication industry:
- NFPA – The National Fire Protection Association requires that any business that has combustible dust involved in any type of process must complete a DHA
- OSHA – The Occupational Safety and Health Administration will review a documented DHA as part of their facility inspections for businesses that produce combustible dust
Beyond compliance, conducting a DHA is essential for the safety of your employees and the protection of your equipment and surroundings. If you’re undergoing a new facility design or making changes to typical operations, a DHA is critical. It’s also recommended that you update your DHA at least every five years.
Hazards at a glance: The table below shows the dust types and the metalworking processes most likely to produce them.
- Fine metallic dust, including aluminum, titanium, and magnesium
- Abrasive dust
- Sanding
- Polishing
- Deburring
- Grinding
- Sawing
- Buffing
- Machining
The Three Phases of a DHA
Once you’ve scheduled a dust hazard analysis for your facility, it generally follows a systematic process, as outlined below.
Preparation and Planning
- Gather critical documentation – This will include facility documents such as building plans, equipment drawings, process flow diagrams, emergency plans, and more.
- Identify all combustible dust present – Materials are tested at your facility to determine if they pose an explosion risk. Tests include examination of particle size, moisture content, distribution, burning rate, and dust explosion potential.
Evaluation and Identification
- Conduct field verification – An on-site team reviews your facility to verify all documentation and witness current operating conditions, inspecting equipment layouts, dust accumulation zones, and ventilation systems.
- Identify ignition sources and hazards – Review equipment and building compartments for potential problem areas that could cause an explosion, such as friction or hot surfaces.
- Assess current safety measures – Evaluate existing controls including those relating to daily cleaning protocols, dust collection systems, and any other measures that help maintain safe operations.
Action and Implementation
- Receive recommended solutions – Based on the evaluation, the DHA team provides recommendations for safeguards you can implement at your facility. This can include employee training, modified processes, or the use of new equipment.
- Receive written documentation of findings – You’ll be given a comprehensive report covering the methods used, hazards identified, and any areas of noncompliance, along with recommended actions.
Contact Us for Combustible Metal Dust Collectors That Can Help Serve as DHA Solutions
AT Industrial Products offers long-term solutions for dust hazard analysis through our American-made wet dust collection equipment.
Ready to Take the Next Step?
Reach out to our team today to learn more about our product offerings and how we can help safeguard your facility.