FIRE SAFETY IN MILITARY VEHICLES EVALUATION OF ISO 3795

摘要

It has been shown in previous studies that the current standard used to fire test interior materials inrncivilian and military vehicles, ISO 3795 (FMVSS 302), has led to a low level of fire safety ofrninterior materials in civilian vehicles. The purpose of this study was to evaluate the fire safety ofrninterior materials in military vehicles. The aim was to suggest a fire test method to be used onrninterior materials in military vehicles, which correlate better to full scale fires. The aim was also tornperform fire tests of a number of interior materials, and evaluate these. Eleven different interiorrnmaterials from two military vehicles were tested in the cone calorimeter at 25 and 50 kW/m2. Timernto ignition was found to be short and the heat release rate to be high. The materials were evaluatedrnaccording to criteria used for trains, high speed crafts and submarines. Only one material passed,rnbut only for use on trains and only according to the criterion for 25 kW/m2. All other materialsrnfailed. A comparison was also made with materials from cars and buses, which have been tested inrnprevious studies. It was found that materials from military vehicles ignite just as fast, orrnfaster, compared to the results from previous studies on car and bus interior for civil purposes. Thernrate of heat release rate was however lower. It was found that ISO 3795 is not a suitable method torntest interior materials in military vehicles and its use has led to a low level of fire safety of interiorrnmaterials in military vehicles. A different test method to be used for fire testing interior materials inrnmilitary vehicles is suggested; ISO 5660 cone calorimeter.