FM200-FireI Suppressent Agent
FM-200 is chemically known as heptafluropropane and is sometimes referred to as HFC-227ea. It is a colourless, liquefied compressed gas. It is stored as a liquid and dispensed into the hazard as an electrically non-conductive vapour. FM200 extinguishes fire by both its chemical effect (80%) and its physical effect (20%). It has been classified as being suitable for use as a total flooding agent in occupied areas.
FM200 is effective as a fire extinguishing agent for use on Class A surface fires, Class B flammable liquid fires and Class E electrical fires.
Although FM200 is considered non-toxic to humans in concentrations used for fighting fires certain safety considerations should be considered when handling and applying the agent.
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The major disadvantage of FM200 is that it decomposes to form halogen acids when exposed to open flames. The discharge from FM200 may create a hazard to personnel from the natural agent itself and from these products of decomposition that result when the agent is exposed to fire or other hot surfaces. Exposure to the agent is generally of less concern than the exposure to decomposition products, however both should be avoided. The formation of these acids is minimised by using early warning detection systems and proper system installation. |
