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최영두,김석표,이동언,고석균 한국화재감식학회 2019 한국화재감식학회 학회지 Vol.10 No.3
In the tourism submarine, there exist no explosive materials, but two fire cases are reported. Hydrogen emitted from the lead-acid battery of submarine is filed up for a long time and causes an explosion. Frictional sparks generated by grinding work start the ignition. In the experiment, the amount of hydrogen generated from the battery is calculated and the pressure to cause the explosion is proved. Since the minimum ignition energy of hydrogen is small(0.02mJ), ignition starts even for the small spark of grinder. Providing a suitable ventilation system and battery storage system is the most useful methods to prevent the explosion fire of the tourism submarine. Way to prevent explosion by hydrogen inside the submarine by providing a ventilation and detection system of hydrogen that causes explosion.
최영두,김석표,이동언,양창혁 한국화재감식학회 2021 한국화재감식학회 학회지 Vol.12 No.3
Due to the recent abnormal temperature phenomenon, smoke screen disinfection is used to control pests relatively easily in livestock houses and farm houses due to severe damage to pests regardless of the season As a result, fire cases are often reported. In this study, the temperature change of the vaporizer during the operation of the fogging machine was measured using a total of three types of fogging machine, and the possibility of fire due to surrounding combustibles was confirmed through reproduction experiments. Through reproduction experiments and fire cases in this study, we would like to suggest safety measures and prevention measures when using a fogging machine.