【Daily Question】Utilities - Water Supply and Drainage - 20191214
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Which type of fire cannot be extinguished using a water spray system? ( ) A. Solid fire B. Fire in a hot, enclosed space C. Fire involving liquids with a flash point above 600 D. Electrical fire. Answer: B is the correct answer. According to Articles 1.0.3 and 1.0.4 of the current Code for Design of Water Sprinkler Systems, B is the correct answer. In a high-temperature confined space, when water mist is sprayed in, the rapid vaporization of the mist causes the pressure inside the space to rise sharply, posing a risk of damage or explosion.
B. Fires in enclosed spaces at high temperatures