What are gaseous extinguishing systems and why do they leak?

Gaseous extinguishing systems protect urgently important infrastructure against special hazards, fundamental for the safeguarding of critical facilities. However, gaseous extinguishing systems leak because they are active and dynamic systems and this threatens the consistent and reliable safety that they should offer to the space that they protect.

In fact, in the regulation ISO 14520, which is the “gold standard” of fire suppression systems, it is clearly stated that gaseous systems leak and need to be periodically checked to counter this issue:  - “if a container shows a loss of agent in quantity of more than 5 % or a loss of pressure of more than 10 %, it shall be refilled or replaced.”

Given that gaseous systems are designed specifically for a protected space or room e.g. one aluminium foundry factory floor, a 5% loss of extinguishing agent may mean that the system would not fully extinguish the fire.

Technology now exists to improve the reliability of fire suppression systems that affects the safety of all who occupies the building it protects in an event of fire.

To  ensure  that fire  suppression  systems  are  always   full and that no accidental discharge or leakage has occurred, Coltraco Ultrasonics have developed an ultrasonic liquid level indicator, the Portalevel ® MAX and  the constant monitoring system the Permalevel ® MULTIPLEX. By testing and monitoring fire extinguishing systems for leaking, facilities managers and factory owners are able to exceed  standards and ensure that the gaseous extinguishing systems are able to extinguish in the event of the fire.

The easy to use Portalevel® MAX uses ultrasonic technology to pinpoint the liquid level of suppressant agent in the cylinders of the extinguishing system which makes testing is quicker and easier. Liquid level identification takes just 30 seconds, needing only one person. Combined with the Portalevel® MAX, the Portasteele® CALULATOR is an advanced calculator application, that converts the liquid level height of C02, NOVEC™ 1230 and FM-200® liquefied gaseous extinguishant agent readings taken on an ultrasonic non-destructive liquid level indicator device into the agent weight/mass.  Furthermore, the Portasteele® CALCULATOR can convert an expected agent weight back to the required liquid level indicator allowing users to anticipate where the level should be.

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