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——贵重文物、重要资料档案等着火不宜用水扑救,因为水渍能损坏这些贵重物品.——高压电器设备失火不能用水扑救.因为水是导电的,高压电流会沿水柱传到消防器械上,使消防人员触电,或造成电器设备短路烧毁.——电石着火不能用水扑救.电石即碳化钙,遇水会生成可燃性气体乙炔,与空气中的氧混合后,遇到明火很容易爆炸.——比重轻于水的易燃液体着火,原则上都不能用水扑救.着火的易燃液体会漂浮在水面上,随处流动,容易造成火势蔓延.——硫酸、硝酸、盐酸不宜用水扑救.因为这三种强酸遇水会发生强烈放热反应,引起强酸飞溅,甚至发生爆炸.
- Valuable cultural relics, important data files such as fire should not be put out with water, because water stains can damage these valuables .-- High voltage electrical equipment can not fire water fight .Because the water is conductive, high voltage current will spread along the water column fire fighting equipment, Make firefighters electrocution, or cause electrical equipment short circuit burned.- calcium carbide fire can not use water to save.Calcium is calcium carbide, water will generate flammable gas acetylene, and oxygen in the air after mixing, it is easy to explode the open flame.- - Flammable liquid lighter than water on fire, in principle, can not be saved with water. Fire flammable liquid will float on the water, flowing everywhere, easily lead to spread of fire .-- Sulfuric acid, nitric acid, hydrochloric acid should not use water to fight. Three strong acid will react with water will have a strong exothermic reaction, causing strong acid splash, or even an explosion.