详情

原文传递 Analysis of Test Criteria for Specifying Foam Firefighting Agents for Aircraft Rescue and Firefighting

题名：	Analysis of Test Criteria for Specifying Foam Firefighting Agents for Aircraft Rescue and Firefighting
作者：	Wright, Joseph A.;Scheffey, Joseph L.;
关键词：	AIRCRAFT FIRES, FIRE EXTINGUISHING AGENTS, FOAM, CONTROL, REQUIREMENTS, DENSITY, STABILITY, SPECIFICATIONS, CHEMICAL PROPERTIES, MILITARY STANDARDS, RESCUES, TEST METHODS, CORRELATION, DRAINAGE, AVIATION FUELS, FIRE FIGHTING, STORAGE, AVIATION SAFETY, JET ENGINE FUELS, AIRPORTS, SAFETY FACTOR, CHEMICAL ANALYSIS, SURFACE TENSION, SHELF LIFE, CRASHES.
摘要：	Foam agent quantities and application rates for FAA certified airports are based on large-scale fire test data of Aqueous Film-Forming Foam (AFFF) and protein-based foams. The philosophy is to control aircraft fuel fires in sixty seconds. Foam agents which are used for aviation applications should demonstrate this level of performance, including a safety factor which assures adequate performance under less than optimum conditions. A review of standard test methods and performance criteria indicates a wide range of requirements. The U.S. Military Specification (MIL SPEC) for AFFF, on which the original agent criteria was developed, is the most stringent in terms of extinguishment application density. However, no direct correlation has been demonstrated between many of the required physical/chemical properties tests and fire extinguishment/burnback performance. It was demonstrated, using comparative data from numerous small and large-scale fire tests, that the small-scale MIL SPEC fire tests correlate with large-scale test results. MIL SPEC agents, which provide a safety factor over minimum FAA requirements, also are formulated to have proportioning, storage, stability, and shelf-life attributes appropriate for crash rescue firefighting applications. Adoption of the MIL SPEC for AFFF agents is recommended. Future work related to foam testing should focus on the use of first principles to establish fundamental foam extinguishment mechanisms. Foam, Foam testing, AFFF, Military specification, Aircraft crash rescue firefighting, Hydrocarbon fuels, Spreading coefficient, Protein foam, Surface tension, Expansion, Drainage, Foam standards.
总页数：	96
报告类型：	科技报告