Proceedings of the International scientific and practical conference ―Cambridge Science and Education Conference‖ (May 15-17, 2026) / Publisher website: www.naukainfo.com. - Cambridge, United Kingdom, 2026. - 429 p.

110 contamination-free zone called the cold zone. No special personal protective equipment used in it. place of event Fig. 1. Zoning of the scene Detailed calculation of the predicted chemical pollution zone is performed using the "Forecasting Methodology" [5]. The methodology allows for a long-term (operational) and emergency assessment of the situation in the event of accidents associated with the spill (emission) of hazardous substances from technological tanks at chemically hazardous facilities, automobile, river, railway (while stationary) and pipeline transport [6, p. 137]. For unknown substances, or for mixed substances (for example, in the case of a road accident), the initial danger zone is 50 m for bulk materials, 100 m for liquids (from the spill site), and 300 m for gases. According to the General Staff of the Armed Forces of Ukraine, during the entire period of the Russian Federation's war against Ukraine, almost 12 thousand cases of the use of dangerous chemical substances were documented [7]. In 2025, the russians, along with traditional means of fire, regularly used special ammunition equipped with irritating chemical substances. These include, in particular, gas