This code specifies fire safety requirements for coal pulverizing systems and associated equipment in industrial buildings, primarily focusing on thermal power plants. It outlines safe practices for preventing spontaneous combustion, managing dust explosions through adequate venting, and implementing active firefighting and inerting systems.
Code of Practice for Fire Safety of Industrial Buildings: Coal Pulverizers and Associated Equipments
Quick Reference Values
CO concentration alarm limitContinuous monitoring to detect spontaneous combustion early
Explosion vent dischargeRouted outside the building to a safe location
Mill outlet temperatureStrictly controlled below coal-specific auto-ignition thresholds
Practical Notes
Strict housekeeping is essential; accumulated pulverized coal dust on ledges or equipment is a major secondary explosion hazard.
Explosion vents must never be blocked or routed into enclosed spaces.
Using high-pressure water streams directly on burning pulverized coal can create hazardous dust clouds; steam or inert gas blanketing is often preferred inside the mill.