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GFGV.Guidelnfo - Foam Liquid Concentrates Page 1 of 2 U` ONLINE CERTIFICATIONS DIRECTORY GFGV.GuideInfo Foam Liquid Concentrates View Listings Paoe Bottom [Extinguishers and Extinguishing System Units] (Foam Extinguishing System Units) Foam Liquid Concentrates See General Information for Foam Extinguishing System Units GENERAL This category covers foam liquid concentrates, which include protein, fluoroprotein, film-forming fluoroprotein (FFFP), aqueous film- forming foam (AFFF), or other synthetic-based materials. Foam is generally produced by the addition of a foam liquid concentrate to water and mechanically mixing air into the foam solution. Some foam solutions may be discharged through equipment that does not mix air into the solution as indicated in the individual Listings. Foam is suitable for use on fires involving ordinary hydrocarbon petroleum products, but may not be suitable for use on fires involving polar solvent fuels. Concentrates investigated for use on polar solvent fuels are noted in the individual Listings. Liquid concentrates may be stored in the original shipping containers or in pressure-proportioning tanks. Liquid concentrates are not intended to be stored at temperatures lower than those for which they have been Listed or above 120°F. They should be stored in locations free of excessive moisture to avoid external corrosion of containers and other equipment. The quality of foam produced is affected by proportioning and discharge equipment.The individual Listings of liquid concentrates reference all the equipment with which it may be used and the corresponding operating limitations, including foam concentrations. There are two types of foam-discharge outlets: Type II — Discharge devices that do not deliver foam gently onto the liquid surface but are designed to minimize submergence of the foam or agitation of the surface. Examples include foam chambers, subsurface injection equipment, or applying the foam off a backboard or the wall of a tank. Type III — Discharge devices that deliver foam directly onto the liquid surface at an angle above the horizontal. Examples include hand-held nozzles or monitors. Unless otherwise stated in the individual Listings, the type of discharge outlet Listed with a foam is Type III. Foam concentrates investigated with Listed sprinklers and fixed spray-foam nozzles are intended to be installed in accordance with the applicable requirements of ANSI/NFPA 11, "Standard for Low-, Medium-, and High-Expansion Foam," or ANSI/NFPA 16, "Standard for the Installation of Foam-Water Sprinkler and Foam-Water Spray Systems," but in no case is the protected area per sprinkler to exceed 39.6 sq. m.. Foam extinguishing systems are intended to be installed in accordance with the applicable requirements of ANSI/NFPA 11 and ANSI/NFPA 16. Authorities Having Jurisdiction should be consulted before installation. ADDITIONAL INFORMATION For additional information, see Foam Extinguishing System Units (GEEZ), Extinguishers and Extinguishing System Units (FWFZ) and Fire Protection Equipment(AAFP). REQUIREMENTS The basic standard used to investigate products in this category is UL 162, "Foam Equipment and Liquid Concentrates." http://database.ul.com/cgi-bin/XYV/template/LISEXT/1 FRAME/showpage.html?name=G... 11/5/2008