Pneumatically Actuated Fire Suppression Systems - PAFSS

There are many situations where dealing with a fire at source will both minimise the damage of valuable assets by extinguishing the fire early and before it fully develops, enabling a quicker recovery of operations.

PAFSS can cover a range of applications and can be tailored to customer requirements, but the following common features apply:

• Simple to install and cost effective to maintain.
• Totally self contained, requiring no electrical source; remains operational during power interruptions.
• Systems include detection/discharge tubing, superbly engineered specialist valves/regulators and pressure vessel(s) containing an appropriately selected fire extinguishing agent.
• Unique features derived from innovative technology.

Principles of Operation

The heart of any PAFSS is the special detection tubing which acts as a linear heat and flame detector. The pressurised tubing is completely flexible, tough enough to withstand the harshest of conditions and can be run throughout the installation adjacent to identified fire risks. Upon flame or heat impingement, the tube ruptures at the hot spot and by depressurisation the cylinder valve is activated to operate the extinguishing system. No external energy or any power is needed for detection or actuation.

The main features of these specialised systems are:

• Linear heat and flame detection allows for an unlimited number of detection points.
• Flexible detection tubing can be located adjacent to the identified fire risk areas, resulting in fast reaction.
• Failsafe by design principles and simplicity.
• Flexible tube remains unaffected by dirt, dust, debris, oil, vibrations in nearly all industrial environments.
• No need for any external energy or power supply for detection or actuation.

Direct Systems

Direct PAFSS are efficient and simple self-activating systems for small enclosed hazard areas. They are failsafe against malfunction.

Upon flame impingement or heat the pressurised detection tube which is connected to a cylinder containing the suppression agent ruptures with a burst at the hottest point. The agent is then discharged through the burst hole directly at the heart of the fire.

Direct systems are available in low pressure and high pressure format, depending on the most appropriate extinguishing product selected.

Indirect Systems

Indirect PAFSS are efficient and self-activating systems for larger enclosed and even open hazard areas.

 
Upon flame impingement or heat the pressurised detection tube will burst and by depressurization will activate the cylinder valve to open.

The agent is then released through separate pipe work and nozzles which are aiming at the hazard area.

Indirect systems are available in low pressure and high pressure format, depending on the most appropriate extinguishant selected.

 

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Shires Fire & Safety Ltd
Unit 4, Queensway Link Industrial Park
Stafford Park 17
Telford
TF3 3DN

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