It is a common misconception that Halon, like CO2, "removes oxygen from the air."
According to the Halon Alternative Research Corporation (Halon Alternatives Research Corporation "Three things must come together at the same time to start a fire. The first ingredient is fuel (anything that can burn), the second is oxygen and the last is an ignition source. Traditionally, to stop a fire you need to remove one side of the triangle-the ignition, the fuel or the oxygen. Halon adds a fourth dimension to fire fighting-breaking the chain reaction. It stops the fuel, the ignition and the oxygen from working together by chemically reacting with them."
I highly doubt they are wax. Deluge heads use either a liquid filled glass capsule or a solder ribbon as activators.
So, side topic: We are finishing out the build out on a 1921 space in Downtown Little Rock.
My sprinkler is the older system that has wax in the heads. When the wax melts, it opens the pressurized water line, and thus, we are ready for Singin' in the Rain. My battens are hung from the ceiling approximately 6 inches below the level of the sprinkler lines. I'm a little scared that my lights (12 Pars and 4 Source 4s) might create enough heat to melt the wax. Is my fear tangible or should I stop worrying?
I set off a sprinkler head this way - but it was a Selecon Pacific with the heat sink DIRECTLY under the sprinkler head (don't ask....it was a Superheroes and Supervillains themed birthday party in the bar of the theatre I worked in and we'd made a Bat-light gobo - failed to notice that the sprinkler head was right above the lighting bar when we hung the Pacific), and it had been on at 100% for almost three hours before there was enough heat to trigger the sprinkler. Also it was a 55 degree Celsius head. The water that came out was pretty disgusting.
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