pressure at various points in the firemain loop.
the firemain control panel to silence the
The LOW PRESSURE portion of the indicator
buzzer.
illuminates red to indicate low pressure at that
point in the firemain loop. When depressed, the
METER portion of the indicator illuminates white
and the LOOP AND RISER PRESSURE meter
displays the firemain pressure at that point in the
loop.
The next indicator is labeled CBR ON GRP
4. There are four of these indicators on the fire-
main control panel, each with a different group
number. These indicators illuminate amber to
indicate the respective chemical, biological,
radiation (CBR) washdown group has been
activated. There is no control for the CBR
washdown system on the DCC, only indications.
The two push-button indicators, labeled IR
SET and IR ON, are located on the top right of
the firemain control panel (not applicable on the
CG). These push buttons are used in conjunction
with the infrared suppression system. Use of this
system has been discontinued; therefore, these
push buttons are inoperative. These push-button
The four push-button control indicators, over
indicators are not on the DCC of the newer ships.
the heading HGR AFFF CONT, provide control
and status of the 1000 gpm foam proportioner and
the hangar sprinklers. The first control indicator
in this section is labeled 1000 GPM AFFF PROP
ON. When this push button is depressed, a
control signal is sent to the proportioner for
starting. The push button on the DCC illuminates
amber to indicate the proportioner is on. The
second push-button control indicator is labeled
The split-legend indicator, under the heading
SPRG ON. When this push button is depressed,
Z VALVE, is labeled OPEN and CLOSE. There
a open command signal is sent to the hangar
are four of these valves on the firemain control
AFFF sprinkler valve. The push-button indicator
panel (three on the CG). They illuminate green
on the DCC then illuminates amber to indicate
to indicate the ZEBRA segregation valves are
the hangar sprinkler system is on. The third push-
open. They illuminate white to indicate the valves
button control indicator, labeled 1000 GPM
are closed. There is no control of the ZEBRA
AFFF PROP OFF, secures the AFFF foam
s e g r e g a t i o n valves from the DCC, only
proportioner and illuminates white to indicate the
indications.
proportioner is off. The fourth push button in this
section, labeled SPRG OFF, secures the hangar
sprinkler system and illuminates white to indicate
the sprinkler system is secured.
Located at the left edge of the panel is an
annunciator labeled AUDIBLE ALARM. This is
a buzzer that provides the operator an audible
indication that an alarm or fault has occurred.
The operator uses the alarm acknowledge push
button on the hazard detection panel or
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