This presentation provides an overview of combustible dust hazards in the plastics industry. A number of recent industrial combustible dust fires and explosions, some involving plastic dust, have led to heightened awareness of combustible dust hazards, increased regulatory enforcement, and proposed changes to the current standards and regulations. This work provides a summary of the fundamentals of combustible dust hazards, comparing and contrasting combustible dust to flammable gases and vapors. The types of tests used to quantify and evaluate the potential hazard posed by plastic dusts are explored. Relevant standards and regulations are also described. Finally, guidance on the primary methods to prevent and mitigate combustible dust hazards in different processes in the plastic industry are covered.