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 TM 55-1905-223-10
WARNING
The FM-200 system has been outfitted with a time delay override
located on top of the time delay.
When the time delay override lever is pulled, the 60 second time
delay is negated and FM-200 will immediately discharge into the
protected spaces.
This procedure should only be performed under extreme circum-
stances and with the authority of the Watch Officer or Scene
Commander. Failure to observe these warnings could result in
death or serious injury.
g. System Safety.
(1) Nature and Characteristics of FM-200.
- Suppresses fire by a combination of chemical and physical mechanisms without
affecting available oxygen.
- Designed for use on Class A (cellulose material), Class B (flammable liquids) and
Class C (energized electrical equipment) fires.
- Hydro fluorocarbon (HFC) family (HFC-227ea).
- Trade Name: FM-200.
- Zero Ozone Depleting Potential.
- Fast Action: Discharge within 10 seconds.
- Clean: Discharges as a gas, leaves no residue to damage sensitive equipment.
- People safe in case of unintentional discharge in the protected space.
- Propelled by Nitrogen gas.
- Predischarge (actuation) controlled by CO (Engine Room, Tunnel, Bow Thruster,
A/C Machinery Room systems only).
(2) FM-200 Toxicity Data. FM-200 has acceptable toxicity for use in occupied spaces
when used as specified in the US Environmental Protection Agency (EPA) Significant
New Alternatives Policy (SNAP) program rules. Although FM-200 is considered non-
toxic to humans in concentrations necessary to extinguish most fires, certain safety
considerations should be observed when applying and handling the agent. The
discharge of FM-200 may create a hazard to personnel from the undecomposed agent
itself and from the decomposition products which result when the agent is exposed to
fire and other hot surfaces at temperature's above 1300F. Exposure to the FM-200
agent is generally of less concern than is exposure to the decomposition products.
Unnecessary exposure to the agent or decomposition products should be avoided.
(3) Hydrogen Fluoride (HF) Gas. FM-200, when exposed to fire or other hot surfaces at
temperatures above 1300F, will produce HF Gas. Over exposure to HF Gas, in
concentrations greater than three (3) parts per million (ppm), will have the following
effects on humans:
- Corrosive and irritating to the eyes.
- Corrosive and irritating to skin and all living tissue.
- When ingested, corrosive and irritating to the gastrointestinal system.
- When inhaled, corrosive and irritating to upper and lower respiratory tract; may
result in chemical pneumonitis and pulmonary Edema which could be fatal.
(4) Material Safety Data Sheet (MSDS). The MSDS for HF Gas and other chemicals used
in the installed FM-200 systems are identified and provided as follows:
Change 10
2-735
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