O years several fire extinguishing in liquefied HCFC and IIFC gases through the gelling compounds These gels shown increased guishing performance reduced toxicity and reduced cost without pe ID: 94668
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Powsus, Inc. Over the O+ years, several fire extinguishing in liquefied HCFC, and I-IFC gases through the gelling compounds. These gels shown increased guishing performance, reduced toxicity, and reduced cost without penalty of sight obscuration, corrosion, cleanup expense. In fact, at powders and HFC replacement gases have alarm, because they create havoc electrical system up an there are some perceived negatives about powder combinations, which we will properly suspended liquefied halocarbon gas, and the gadpowder permitting the killing, toxicity reduction, and reignition prevention in evenly distributed flow. If not gelled and gadpow- der combinations. addition gaslike behavior, these extinguishment synergies, include the following: cost reduction; weight and volume reduction; toxicity reduction; fire reignition 36 exceeded 1 performance in where the powder must delivered around a baffle spread throughout a fire tests illustrated that the gas carry the powder where the itself was to go gel exceeded the performance on average 44% for FAA “seat [I]. fire tests [2] (2.5crib fires). I.OO/lb x 4.75 452.25 is required $12.00/lb giving a saving of $22.25 FedEx. weight reduction the ability further prevent re-ignition as compared the plane an ocean other venture where subdued deep / smoldering fires and reignition, eliminating maintain protective concentrations. 2001 339 To use a HFC gas neat in this illustration in the automatic tubes shown would have required tubes holding at least 19 Ibs. of FE-36 (even more of FM-200) and tube lengths of 27 ft compared with 14 ft for the gelled product. (The tube holding gel against fires in air cargo compartment is illustrated in the accom- panying video.) A gel of APP and FE-36, another gel of APP and FM-200 and another of sodium bicarbonate and FE-36 put out fires without generating the unacceptable amounts of hydrogen fluoride that occur from using HFC gases neat [3]. These enhanced 121 1/1301 enabled the user to put out a 28 fire with 1 Ib of total agent producing one of the most effective fire-killers ever found. (The cease fire extinguisher containing Halon 121 1/1301 and MAP are illustrated in the accompanying video.) Gelling of a liquefied gas is not a thickening process, but a loose chemical bonding of the powder particle to its surroundings. Gelling is a long involved process using agents and ingredients such as polymers, surfactants, silicates, and deflocculants. There is no molecular change in the gas or the powder. Each HFC gadpowder Proving Grounds, 6/14/00. Bolt, William, Skaggs, Reed, and Horton, Donald, “Hydrogen Fluoride Control Testing,” TECOM Projects Nos. 1-CO-160-000-189 (3/17/99) and 9-CO-160-000-422 (1/5/99), Aberdeen Test Center, Aberdeen Proving Grounds, MD. * Jeff Cohen, Chief, EPA, Analysis and Review Branch, 8/7/00. 340 Halon Options Technical Working Conference 24-26 April 2001