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Development of a Water Spout for the Active Extinguishing of the Focus of an Intense Flame While Using the Cumulative Effect of an Explosive Charge

Jana Pupikova, Stanislav Lichorobiec
Transactions of the VSB - Technical University of Ostrava, Safety Engineering Series
2017, Volume 12, Issue 2, Pages 44-51
Doi: 10.1515/tvsbses-2017-0013
Cumulative charges are specially modified pyrotechnic explosive devices with the cavity, that is formed in the front part of the brizant explosive charge. During explosion, the cumulative cavity filled with a soft metal insert has considerable cutting and perforating effects. This type of charge is possible to use to extinguish the focus of a very intense flame caused by leak of flammable gas or liquid, if the cumulative cavity is filled with water. With this step, we create a high-pressure water jet of narrow cross section accompanied by a pressure wave, that blows out the intense flame, and water will remove the heat from the epicenter of the fire and prevent it from burning again.
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