SECTION II
OPERATION
2-1.
GENERAL.
2-2.
SYSTEM ACTIVATION. The Halon 1301 Fire Extinguishing System in the ROWPU BARGE protects void 4 port
and starboard. The system is manually activated from any of three locations.
WARNING
Alert and evacuate personnel from fire hazard area immediately on detection of fire
and where possible prior to actuation of system.
2-3.
REMOTE MANUAL. Two remote pull boxes are located in ROWPU space. One is located on a center line
support post near the ladder to void 4 starboard. The other is located on the starboard side near the personnel door.
These remote pull stations are used to activate the Halon system by breaking the glass and pulling the handle. Pulling
the handle operates the cable operated control head on the Halon cylinder.
2-4.
LOCAL MANUAL. The system can also be activated by operating the local manual release lever of the cable
operated control head.
2-5.
SEQUENCE OF SYSTEM ACTIVATION. Once the system has activated a series of events is set into motion.
Operation of the cable operated control head opens the cylinder valve, discharging Halon into the manifold. Causing the
sirens to commence sounding, the pressure operated switch to operate shutting down ventilation and machinery, the
discharge indicator to operate and indicate the system has discharged. When the Halon is discharged into the manifold
Halon flows into the discharge delay after a minimum of twenty seconds the discharge delay opens allowing Halon to flow
through the 3/8" flex loop to operate the pressure/lever operated control head on the stop valve. This in turn opens the
stop valve allowing the Halon to flow from the cylinder through the discharge nozzles into void 4 port and starboard. All
Halon will be discharged in 10 seconds or less after the stop valve opens.
