GENERAL INFORMATION FOR FM-200 FIREFIGHTING SYSTEM

TM 55-1905-243-24&P

1. GENERAL INFORMATION FOR FM-200 FIREFIGHTING SYSTEM

1.1 DESCRIPTION OF FM-200. FM-200 (1,1,1,2,3,3,3) - Heptafluoropropane is a compound of Carbon, Fluorine,

and Hydrogen (CF3CHFCF3). It is colorless, odorless, and electrically non-conductive. It suppresses fire by a

combination of chemical and physical mechanisms without affecting the available Oxygen. FM-200 is clean, leaves

no residue, thereby eliminating costly after-fire clean-up, and keeping "down time" to a minimum. FM-200 is stored

in steel containers, at 360 PSIG, 70F (25 bars at 21C), as a liquid, with Nitrogen added to improve the discharge

characteristics. When discharged, the FM-200 liquid vaporizes at the discharge nozzles and is uniformly

distributed as it enters the fire area. FM-200 is approved for total flooding fire extinguishing applications in

occupied spaces by the Environmental Protection Agency (EPA) and appears on the Significant New Alternatives

Policy (SNAP) list of acceptable substitutes for ozone depleting substances. FM-200 is also on the clean

halocarbon fire extinguishing agents listed in the National Fire Protection Agency (NFPA) 2001 Standard, Clean

Agent Fire Extinguishing Systems and is approved for marine application by the US Coast Guard (USCG).

1.2

INSTALLATION REQUIREMENTS. The FM-200 systems have been installed in accordance with the

approved Technical Data Package (TDP) consisting of the Detailed Design/Installation Drawings.

1.3 VESSEL SPECIFIC DESIGN CONFIGURATIONS. Due to differences in vessel configuration within the LCU-

2000 Design, minor configuration changes to the Detailed Design/Installation Drawings were made during each

installation to accommodate the configuration of each vessel. The Detailed Design/Installation Drawings have

been revised to fully disclose the LCU-2K class configuration of the FM-200 systems installed on your vessel.

LCU-2K-5553-1, US Army LCU-2K FM-200 System Piping Installation and Details; LCU-2K-5553-2, US Army LCU-

2K FM-200 System Miscellaneous Mods; LCU-2K-5553-3, US Army LCU-2K FM-200 System Electrical

Modifications; and LCU-2K-5553-4, US Army LCU-2K FM-200 System Label Plates and Placards; are specific to

your vessel and disclose the LCU-2K class configuration of the installed FM-200 systems. These drawings are

provided as follows:

DRAWING TITLE

DRAWING NUMBER

LOCATION

US Army LCU-2K

FM-200 System Piping Installation and Details

LCU-2K-5553-1

Appendix E

US Army LCU-2K

FM-200 System Miscellaneous Mods

LCU-2K-5553-2

Appendix E

US Army LCU-2K

FM-200 System Electrical Modifications

LCU-2K-5553-3

Appendix E

US Army LCU-2K

FM-200 System Label Plates and Placards

LCU-2K-5553-4

Appendix E

NOTE

LCU-2K CLASS DIFFERENCES IN VESSEL CONFIGURATION EXIST WITHIN THE

LCU 2000 DESIGN. ACTUAL LOCATION OF SOME COMPONENTS MAY VARY

SLIGHTLY BETWEEN VESSELS.

1.4 IDENTIFICATION OF PROTECTED SPACES. The FM-200 Total Flooding Fire Extinguishing Systems on

LCU-2K consists of five (5) manually actuated systems.