Explosion Protection Engineered to Prevent Catastrophic Loss

Designing the right protection strategy starts with knowing your risk. ORR helps organizations evaluate the combustion properties of their materials using recognized testing methods to determine key data points such as:

• Maximum explosion pressure (Pmax)
• Explosibility constant (Kst)
• Minimum explosive concentration (MEC)
• Limiting oxygen concentration (LOC)
• Minimum ignition energy (MIE)
• Ignition temperatures

Understanding these characteristics allows us to engineer protection systems tailored to your specific process environment.

Explosion suppression systems detect a developing fireball within milliseconds and automatically discharge suppressant into the protected vessel. This rapid response cools the flame front, limits pressure buildup, and mitigates further combustion before the event escalates.

Most suppression strategies also incorporate isolation methods to prevent flame propagation into connected equipment—reducing the likelihood of secondary explosions.

Ideal for:
High-risk enclosed processes where venting is not feasible.

Explosion isolation systems create a barrier that prevents flames and pressure waves from traveling through ductwork into interconnected equipment.

Isolation methods include:

• Chemical isolation — suppressant discharged into ducts
• Active mechanical isolation — high-speed valves form a physical barrier
• Passive mechanical isolation — pressure-activated valves close automatically

Isolation is often essential to achieving adequate risk reduction across complex process systems.

Explosion venting relieves pressure by directing the force of an explosion through frangible panels or membranes, helping protect the integrity of the process vessel.

While venting is often a cost-effective strategy, it must release to a safe exterior area due to the potential for fireballs and expelled materials. Because venting does not stop flame propagation, isolation is typically required as part of the overall protection design.

When exterior venting is not possible, flameless venting may be considered to safely manage pressure indoors.

Dust collectors present one of the most common explosion hazards in industrial environments. Concentrations of combustible dust often exceed explosive limits, and ignition sources such as sparks, electrostatic discharge, or hot equipment can trigger devastating events.

ORR designs explosion protection systems specifically for dust collection processes, helping organizations safeguard equipment, reduce operational risk, and support safer material handling.

Common combustible materials include:

Aluminum • Grain • Sugar • Starch • Plastics • Pharmaceuticals • Charcoal • Wood • Resins