Flame Propagation Solutions

Flame Propagation Solutions
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Introduction

Flame Propagation Solutions

What Kind of Flame Propagation Solutions Do We Offer?

We provide engineered devices that stop flames from traveling through piping or into tanks, protecting facilities from catastrophic flashback events. Our portfolio includes:

Detonation Flame Arresters

  • Designed for supersonic flames caused by shockwave-driven ignitions
  • Essential in long, complex, or high-pressure pipe runs
  • Ideal for gases like hydrogen, ethylene, and other highly volatile vapors

Terminals Storage

Deflagration Flame Arresters

  • Designed for subsonic flame fronts
  • Available as:
    • End-of-Line Arresters (protect vents/open-air terminations)
    • In-Line Arresters (for process piping systems)
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Where Are These Solutions Used?

Flame arresters are required anywhere flammable vapors or gas mixtures are present.

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Common Applications

  • Vapor Recovery Units (VRUs)
  • Flares & flare headers
  • Anaerobic digesters & biogas systems
  • Storage tank vents
  • Truck/rail loading racks
  • Chemical processing units
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Key Products

  • Shand & Jurs 94306 — Vertical/Horizontal Deflagration Arrester
  • Shand & Jurs 94400 Series — Detonation Arrester
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Services

Sizing & Selection Consulting

  • Ensures correct MESG (Maximum Experimental Safe Gap)
  • Matches arrester type to the specific gas group (e.g., Propane ≠ Hydrogen)
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Why Are Flame Propagation Solutions Critical?

A flame at a vent or flare can travel back through piping in milliseconds. These devices prevent disaster.

Catastrophe Prevention

Without a flame arrester:

  • A flashback can ignite the tank vapor space
  • The storage vessel can explode
  • Personnel and equipment are at extreme risk

Flame arresters extinguish the flame before it reaches the fuel source.

Regulatory Compliance

Required by:

  • OSHA
  • API Standards
  • NFPA Fire Codes
Especially for:
  • Class I flammable liquids
  • Vapor control systems
  • Biogas & digester gas operations

Asset Protection

Prevents flame damage to:

  • Compressors
  • Blowers
  • Pumps
  • Vapor processing equipment

Introduction to Flame Propagation Solutions

Facilities handling flammable liquids and gases must manage the ever-present risk of flashback—a dangerous event in which a flame travels backward through piping toward the fuel source.

Flame Propagation Solutions, including deflagration and detonation arresters, form the passive mechanical barrier that prevents this scenario.

Powered by the trusted legacy of Shand & Jurs, Cognesense offers the industry’s most complete line of flame arresters engineered to extinguish flames instantly and keep facilities compliant with NFPA, API, and OSHA requirements.

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How It Works & Key Advantages

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The Element Matrix

At the core of every flame arrester is a precision-engineered metal matrix. It works by:

  • Absorbing heat from an incoming flame
  • Dropping the temperature below ignition levels
  • Preventing the flame from traveling through
  • Allowing vapor to continue flowing normally
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Deflagration vs. Detonation Protection

We provide arresters for all flame behaviors:

Deflagration Arresters
  • Handle subsonic flame fronts
  • Ideal for short pipe runs, vents, and tank applications
Detonation Arresters
  • Designed for supersonic flame fronts with shockwaves
  • Required in long or complex piping systems
  • Provide maximum protection for highly volatile gases
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Maintenance-Friendly Construction

To prevent dangerous pressure buildup:

  • Tube Bank and Crimped Ribbon styles are available
  • Many models include extractable elements for quick cleaning
  • Maintenance crews can remove just the internals—not the entire housing
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Installation & Retrofit Considerations

Correct Placement is Critical
  • Deflagration arresters must be installed within 10–20 pipe diameters of potential ignition sources
  • If installed farther away, flame velocity may accelerate — requiring a detonation arrester instead
Material Compatibility

Arresters are available in:

  • Stainless Steel
  • Aluminum
  • Carbon Steel
  • Hastelloy

This ensures compatibility with corrosive gases such as H₂S or aggressive chemical vapors. Proper material choice preserves safety and prevents element gap erosion.

Why Cognesense?

Cognesense is the exclusive home of Shand & Jurs, a pioneer of industrial tank and process safety since 1922.

While many vendors offer off-the-shelf flame arresters, we provide:

  • Truly engineered safety
  • Expert consulting for gas groups & MESG
  • USCG & ATEX tested arresters
  • Perfectly matched components for any piping geometry

Major industrial operators trust Cognesense because we don’t just sell hardware — we design reliable, end-to-end protection for your facility.

Measure. Monitor. Protect.