Spark Detection Systems

What are spark detection systems?

Spark detection systems provide fire protection for dust extraction filters by preventing ignition sources passing through the dust extraction ducts. The extraction duct detects and extinguishes ignition sources from the production machinery before they reach the filter.

Applications

Many industries use dust extraction ducts to remove waste material from process machinery.

Bulk handling conveyors are used to transport raw materials between machinery and storage areas.

Both routes can carry sparks, embers, and burning dust to dust extraction filters, cyclones, and silos, where conditions are ideal for igniting a fire or explosion.

Restricted access to these enclosed spaces often makes it difficult to extinguish a fire once it starts. Transport ducts, clean air return ducts and interconnected conveyor networks allow a fire to quickly spread to other areas of the factory.

Diagram showing how Raille spark detection and fire suppression systems work to achieve industrial fire protection

Detectors

Spark detectors are very sensitive and react to the infra red light emitted by hot particles moving through their field of view.

The detectors must be capable of effectively monitoring the entire cross section of the duct or conveyor while it is running and carrying a high load of material. Sensitivity and response to all viable ignition sources is important, as is correct positioning of the components.

BM6-2 with pump control panel

Extinguishers

When sparks are detected, an automatic high speed reaction is activated a short distance downstream to extinguish, isolate or otherwise suppress the hazard.

The most common reaction is a curtain of high pressure water, sprayed into the path of the spark. Our extinguishers need only spray a small amount of water for a few seconds. This means they are suitable for most materials and processes.

In particularly water sensitive areas, mechanical gates can be used to trap the sparks, with argon gas to extinguish them once isolated.

dust filter fire

Further information

UK supplier

+44 (0)191 224 0001
Raille Spark Detection Systems

Worldwide supplier

+49 (0)5181 909 910
T&B Electronic

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