Why soda acid tube extinguishers cannot be used in fighting electrical fire. Give reason:
Answers
highly conductive and would pose another danger. In general, you can stop, contain, suppress or prevent fire.
To stop a fire, you have to halt the chemical process of combustion. You usually do this by either removing the source of energy that keeps combustion going, or you alter the chemistry and stop it that way.
For ordinary fires, say some burning wood, adding water to wet the wood will cool the process enough it will stop. The use of CO2 does this as well, but also alters the chemistry by removing Oxygen which is the main ingredient for ordinary fires. Removing Oxygen is the primary purpose of dry extinguishers and Halon fire systems that were once used in computer rooms in businesses. Foam extinguishers are basically cooling types that also offer some of the oxygen removal properties of CO2, but are far less of a danger from asphyxiation.
Since water can be highly conductive it is not a good idea to use any derivative, like foam, on electrical, fuel or oil fires. Fuel and Oil fires are just spread and the danger of electrocution increased for electrically associated fires.
Explanation:
Although Soda and Acid are present in a soda acid fire extinguisher, they are not part of the extinguishing process. Their purpose is to generate the gas pressure to propel the extinguishing fluid out of the container and onto the fire.