Characterization of aerosol generated during fire.
F.X. Ouf (1,2), A. Coppalle (2), J. Vendel (1), M.E. Weill (2), CFA 2003 - 19th Congrès Français sur les Aérosols, 10-11th décembre 2003, Paris. (1) Institut de Radioprotection et de Sûreté Nucléaire DPEA/SERAC Laboratoire de Physique et Métrologie des Aérosols et du Confinement BP 68, 91192 Gif-sur-Yvette Cedex (2) UMR 6614 CORIA Site universitaire du Madrillet – Avenue de l’université BP 12 76801 Saint Etienne du Rouvray Cedex
If a fire occurred in a nuclear installation, the soot generated would be the principal vector of any contamination, moreover, they would represent an important factor of propagation of fires. The current device making it possible to collect these soot are called High Efficiency Particulate Air Filters. Studies have been undertaken at IRSN on the behaviour of these filters in case of fires and have highlighted differences in filtration according to the characteristics of the combustion aerosols. The object of this study is to establish, on the one hand a database of the characteristics of the soot in order to better envisage the behaviour of the filters for various types of fires, and on the other hand to evaluate their impact on fire propagation. Thus, the particle size distribution and concentration, their physical nature and optical properties (extinction and diffusion coefficients, refractive index) will be linked to the type of fuel in order to establish a correlation between fire conditions and the properties of the generated soot.