The use of the method of zoning thermal damage to establish the seat of fire in the moto vehicle

The modern method of establishing a seat of fire in vehicles is based on the study of thermal damage to preserved structural elements. A great difficulty for practitioners is cases when, as a result of the thermal effects of a fire, all combustible and burnable materials in the car are almost completely destroyed. As a rule, traditional methods become inapplicable for a number of reasons. Materials and Methods: for the study, general scientific and special methods of scientific knowledge were used, such as systemic, comparative legal, the method of logical deduction and induction, as well as methods of interpretation, structural analysis and observation. The results of the study: After analyzing the mode of all possible thermal damage to the car body, the authors identified four typical zones of identical thermal damage to the paint coating on the car body. By comparing the relative position of the boundaries of these zones with other preserved focal features, a specialist can fairly accurately determine the location of the seat (seats) of the fire and, therefore, ultimately determine the technical cause of the fire. The article also considers the influence of factors such as the gravitational field of the Earth, the enclosing structures of the car and the presence of a accelerant in the form of a spilled combustible liquid in the zone of the seat of fire on the formation of typical zones. Findings and Conclusions: The authors propose to use the method of zoning thermal damage in combination with the traditional method of detecting focal signs when examining a burned car. This method is based on determining the boundaries of zones with the same mode of damage on a fire-struck object and is successfully used during inspections of burnt structures made of wood.