Chemical Extinguishing Agents & Application Systems (Part 4)
The National Institute of Fire Protection and Safety prepared this vlog to enhance your Wet Chemical Extinguishing Agents knowledge. Wet chemical extinguishing agents are primarily used for suppressing Class K fires, typically involving cooking oils and fats. Their physical properties include a saponification reaction that forms a soapy layer, cutting off oxygen and cooling the fire source. These agents are usually non-toxic but can irritate if inhaled in large amounts. The extinguishing properties interrupt the combustion process and create a heat-absorbing layer over the fuel. System design for wet chemical suppression includes strategically placed nozzles for efficient application in commercial kitchens or other relevant environments. Systems can be activated either manually or automatically, often triggered by heat detection. Chemical agents and the expellant are stored in cylinders, which must be regularly inspected to ensure functionality. Maintenance procedures include frequent inspection and testing of the nozzles, piping, and agents, alongside routine cleaning and replacement as needed.
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