V.M. Belenkiy - Dr.Sc. (Eng.), Chief Research Scientist, State Academy of Fire Security, Ministry of Emergency Situations of Russian Federation Y.V. Prus - Dr.Sc. (Phys.-Math.), Professor, State Academy of Fire Security, Ministry of Emergency Situations of Russian Federation V.G. Spiridonov - Post-Graduate Student, State Academy of Fire Security, Ministry of Emergency Situations of Russian Federation