The regulations are not extensive enough to deal with the risks presented in gaseous systems. In ISO 14520 which is the “gold standard” of clean agent fire suppression system, clauses 220.127.116.11 in the regulations explains that the storage container contents shall be checked at least every six months as follows. : a) Liquefied gases: for halocarbon agents, if a container shows a loss of agent in quantity of more than 5 % or a loss of pressure (adjusted for temperature) of more than 10 %, it shall be refilled or replaced. b) Non-liquefied gases: for inert gas agents, pressure is an indication of agent quantity. If a container shows a loss of agent quantity or a loss of pressure (adjusted for temperature) of more than 5 %, it shall be refilled or replaced. Essentially, the regulations highlight the need for periodic maintenance because it is known that the gaseous systems leak and need to be periodically checked. Given that the gaseous systems are designed specifically to the individual need of that enclosure, a 5% loss of agent may mean that they would not fully extinguish the fire.
Coltraco have developed a fixed fire suppression monitoring device, the Permalevel® MULTIPLEX which is designed for permanent contents verification. The continuous monitoring system utilises ultrasound technology to detect the level of contents non-invasively and transmits the level information from the wired sensors to the main unit which is then processed and reported to the building’s BMS or local control panel wirelessly through TCP/IP. This is to ensure that FM 200 fire suppression systems are always stored at their designed concentration and that no accidental discharge has occurred, which could affect the effectiveness of the overall fire protection system in the event of a fire. The neglect of continuous monitoring - of the fundamental protection provided by the gaseous extinguishing systems - is to the peril of the lives of occupants of the premises and at the risk of causing financial and reputational loss to the facility comprising the critical infrastructure.
The system developed utilises the Internet of Things (IoT) to achieve its full potential of visualising the monitored contents worldwide. IoT enables a worldwide transmission of data starting from sensor to sensor to the microprocessors and to the facilities manager or maintenance team. Instead of waiting for annual checks, owners and building managers can now identify any changes to their installed fire suppression system contents in real time and dispatch their servicing or maintenance team as soon as notification is received about a change happening to the installed system. This is now entirely possible through the reliance on recent IoT developments.