Dust Doctor: Living safely with combustible dust
Even if your plant air’s dust level is below OSHA’s permissible exposure limit (PEL) for process-generated dust, over time enough dust may be generated and settle on horizontal surfaces to become dangerous.
OSHA initiated a Combustible Dust National Emphasis Program on October 19, 2007. The directive is prefaced by an executive summary, part of which follows here. Before a dangerous condition occurs in your plant, take action to minimize dust generation before combustible dust accumulation again reaches unsafe levels.