Explosions of flammable dust pose a serious threat to a wide range of industries including manufacturing, metal fabrication, chemicals, and more. This hazard can occur in many areas of the facility but is more likely to occur in dust collection systems. Implementing proper explosion ventilation in your dust collection system can reduce the risk of a hazardous explosion.
You must identify and determine if your facility is at risk of exposure to flammable dust. If you determine that your facility is at risk, it is important to consider your prevention and workplace explosion protection options.
Explosion Venting Strategies:
Preventive Maintenance Plan: In conjunction with the protection strategy, each facility must implement a well-designed and managed preventive maintenance plan. A preventive maintenance schedule for your dust collection system will help you control the level of combustible dust.
Explosion Vent or Panels: Vents or panels are designed to burst at the set pressure (PSat). The explosion vent provides a relief avenue for the expanding gasses, but the pressure in the vessel will continue to rise until it reaches the Pred pressure.
This is the maximum pressure of the ignition event when explosion vents are functioning, so this is usually the pressure rating the vessel is designed to withstand.
Explosive panels can be used with short duct lengths to allow for indoor use without flameless venting. Although these vents require replacement once a rupture occurs, they are simple and inexpensive.