CCSP · Question #272
FM-200 has all the following properties except ___________. Response:
The correct answer is C. It may deplete the Earth's ozone layer. FM-200 (HFC-227ea) is a clean agent fire suppression system that is non-toxic, gaseous at room temperature, and leaves no residue, but it does not deplete the Earth's ozone layer.
Question
FM-200 has all the following properties except ___________. Response:
Options
- AIt's nontoxic at levels used for fire suppression
- BIt's gaseous at room temperature
- CIt may deplete the Earth's ozone layer
- DIt does not leave a film or coagulant after use
How the community answered
(50 responses)- A2% (1)
- B6% (3)
- C90% (45)
- D2% (1)
Why each option
FM-200 (HFC-227ea) is a clean agent fire suppression system that is non-toxic, gaseous at room temperature, and leaves no residue, but it does not deplete the Earth's ozone layer.
FM-200 is generally considered non-toxic and safe for use in occupied spaces at design concentrations for fire suppression, making this a true property.
FM-200 is a gaseous agent at room temperature; it is stored as a liquid but rapidly vaporizes upon discharge to extinguish fires.
FM-200, or HFC-227ea, is a hydrofluorocarbon that has a zero Ozone Depletion Potential (ODP), meaning it does not harm the Earth's ozone layer. It was developed as a replacement for halon systems precisely because halons have a significant ODP.
FM-200 is a "clean agent" fire suppressant, meaning it does not leave behind any residue, film, or particulate matter after discharge, which is a significant advantage in sensitive environments.
Concept tested: Fire suppression agent properties (FM-200)
Source: https://www.epa.gov/snap/substitutes-halon-1301-fire-suppression-and-explosion-protection-aircraft-engines-and-nacelles
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