User's Manual

Design
P/N 81-CO2MAN-001 3-79 September 2013
Figure 3-15. Typical Hand Hose Line System with Reel
3-16.1 Uses
Hand hose line systems may be used to supplement fixed fire protection systems or to
supplement first response portable fire extinguishers for the protection of specific hazards for
which carbon dioxide is the extinguishing agent. These systems shall not be used as a
substitute for other fixed carbon dioxide fire-extinguishing systems equipped with fixed
nozzles, except where the hazard cannot adequately or economically be protected by a fixed
system. Hand hose line systems may be used to combat fires in all hazards covered under
Chapter 1, except those that are inaccessible and beyond the scope of manual firefighting. The
decision as to whether hose lines are applicable to the particular hazard shall rest with the
authority having jurisdiction.
3-16.2 Safety Requirements
Consideration shall be given to the possibility of carbon dioxide migrating and settling into
adjacent areas outside the protected space. Consideration shall also be given to where the
carbon dioxide can migrate or collect in the event of a discharge from a safety relief device of
a storage container. In any use of carbon dioxide, consideration shall be given to the possibility
that personnel could be trapped in or enter into an atmosphere made hazardous by a carbon
dioxide discharge. Safeguards shall be provided to ensure prompt evacuation, to prevent entry
into such atmospheres, and to provide means for prompt rescue of any trapped personnel.
Safety training shall be provided to all personnel that work near or in a protected space.
The provisions detailed in Paragraph 1-6.1 shall apply to hand hose line systems.
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CARBON DIOXIDE CYLINDER
HORN/VALVE ASSEMBLY
ON BRACKET
CABLE PULL STATION
FOR MANUAL RELEASE
PLAIN NUT DISCHARGE HEAD
CABLE OPERATED CONTROL HEAD
ACTUATION CABLE
IN PROTECTIVE CONDUIT
SYSTEM PIPE
HOSE ON REEL
PRESSURE OPERATED SWITCH
PROVIDES NOTIFICATION OF
DISCHARGE