Fire-technical investigation of explosion and fire shunt reactor

Fire-technical investigation of explosion and fire shunt reactor

Ruslan O. Morozov1, Galina V. Plotnikova2, Anatoly A. Shekov2,3, Pavel S. Khatskevich4
1Deputy Head of the Department of the Regulatory and Technical Main Directorate of the Ministry of Emergency Situations of Russia for the Irkutsk Region, Irkutsk, Russia; 2East Siberian Institute of the Ministry of Internal Affairs of Russia, Irkutsk, Russia; 3Siberian Fire and Rescue Academy EMERCOM of Russia, Zheleznogorsk, Russia; 4Forensic expert institution of the Federal Fire Service “Testing Fire Laboratory” in the Irkutsk region, Irkutsk, Russia

The article presents the results of the fire-technical investigation of the explosion and fire of the shunt reactor that occurred during the test work after its repair. The nature of the damage developing in the transformer was determined by the ratio of concentrations of gases dissolved in transformer oil, such as hydrogen, methane, acetylene, ethylene, ethane, oxide and carbon dioxide. When analyzing the results of the chromatographic study, it was found that the concentration of all gases dissolved in the oil exceeded the boundary limits, which confirms the occurrence of an emergency operation mode as a result of a short circuit, which led to heating of the oil and insulation, increased pressure in the tank, depressurization and the release of oil vapors outside, which led to an explosion and fire.

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