Why not have a system of AC halon extinguishers in case of fire?
I've read that many of those who die in A / C accidents do not die of trauma, but from inhaling toxic fumes would be a halon system in cargo containers, etc. Cabins save lives, or is the weight and cost high? Will it work? Be Halon removes O2 from the air, but with masks on, do not survive?
It never ceases to amaze me how many people have a false impression of how the gas acts as a halon fire suppressant. I think Hollywood has done a fantastic job of distorting the shape of fire systems of work, but that is another matter entirely. While the new halon production was banned in late 1993 by the Montreol Protocol, which is still in wide use and many alternative agents available that work quite the same way Halon did. Novec (3M-1230, Chemtura FM-200, FE-227, DuPont FE-13, and the list goes on …) For registration, halons and halogenated NOT "suck all the O2 out of the air!" These clean agent systems are selected specifically because they are safe for limited exposure. The chemical process is unique. O2 bonds halogenated agents faster than they can become part of the chemical reaction of O2-fuel as heat and fire. The O2 is still there and can still breathe! Now it is true that some particles of decomposition can occur, but generally not are as menacing as the smoke of the fires that are being generated. I have experienced several discharges of Halon in the course of my career, and rest assured, you can breathe the gas. (Although you do get alittle light headed for the presence of an external agent.) Another person said that halon is an inert gas. That's not right either. Halons and halogenated are synthetic agents. Inert gas system are typically nitrogen or argon base. CO2 can also be considered an inert gas system, but the CO2 to move the oxygen and high quantities of CO2 that can lead to fatal asphyxiation. Halongenated agents must comply with all of 10 seconds suppression agent to prevent accumulation decomposition products. (NFPA 2001 and 12A). Inert gas systems may take longer (a minute or more), but are heavy, since the gas is stored as a gas and not liquid as in the case of halogenated agents. This rapid release of agent pressure ventilation can cause problems in a closed cabin. How Where does the cabin air go when additional pressure is released? I guess developing a ventilation system could be developed. The cost of compliance aircraft fleet would almost cost around prohibative, particularly in an industry that costs stuggles with all the time. Some newer aircraft have these the load systems and areas already occupied. Engines are also equipped with a suppression agent. Your idea has merit. I've often wondered if a way could developed to reduce the oxygen level to a point that will not support combustion in case of an emergency, but still will have to ensure that passengers could not breathe. A lot of new systems of inert gas (aragonite,) work on this principle and you can still breathe O2 levels as low as% 10-12. (I know, I do not think that's the first time I heard about it. But again, I experienced by myself and you can breathe. It feels like your in Denver!) I think better soltions may be better exhaust systems to get people out of the fastest aircraft in an emergency. Good question though. It is definitely an industry that needs improvement constant.
Fire Extinguisher Training : Halon Fire Extinguisher Uses
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