Dust explosions in process plants

Dust explosions have caused extensive property damage and fatalities in process plants. Because of their familiarity, dusts do not get the respect that flammable vapors and gases receive. Dust explosion safety rules are entirely different from the safety rules for gases and vapors; dust is an entirely different phenomenon. Dust area classification standards and the electrical installation practices are found in the National Electrical Code. This paper provides assistance in applying these dust standards and practices and provides recommendations concerning their application