detection panel. The sixth push-button indicator,
are push-button indicators the operator uses to
labeled HAZARD ALARM TEST (HAZARD
conduct panel tests and to acknowledge alarms.
TEST on the CG), is located next to the FAULT
The only control functions of this panel are
TEST push button. Depressing this push-button
vent fan shutdown and summary fire alarm
indicator allows the operator to test the hazard
manual initiation.
The hazard detection panel contains approxi-
alarm cards for the left portion of the hazard
mately 380 indicators for fire, smoke, temperature,
detection panel. The seventh push button is
labeled ALARM ACK. (The ALARM ACK push
and bilge alarms. Because the sensors for these
button is located next to the HAZARD TEST
indicators are located throughout the ship, we
push button on the CG.) When depressed, this
will limit our discussion to the most important
indicators.
push button acknowledges the flashing alarm. If
In the upper right-hand corner is a push-
the alarm condition still exists, the alarm indicator
will illuminate steadily. The alarm indicator will
button control indicator labeled SUMMARY
extinguish when the alarm condition no longer
FIRE ALARM. This indicator illuminates amber
exists. The remaining push-button indicators on
to indicate a fire sensor is activated somewhere
in the ship. The operator can depress this push
the right half of the hazard detection panel are
mirror images of the push buttons just described.
button to start a summary fire alarm for a fire
condition that is not detected by the hazard
FIREMAIN CONTROL PANEL.--The fire-
detection circuits. The second push-button
main control panel contains the indicators and
control indicator is located under the heading
controls that allow the operator to monitor the
VENT FAN SHUTDOWN CONTROL. The
performance and status of the fire pumps,
operator uses this push button to shut down the
firemain risers, and firemain loops. (Refer to
CIRCLE WILLIAM vent fans and to provide a
fig. 9-19.) This panel contains a mimic of the
status of the vent fans. There is no ON vent fan
firemain system. Both automatic and manual
control provided by this push button. When ON
is illuminated, this indicates the CIRCLE
starting of fire pumps is done from this panel.
WILLIAM vent fans have been reset. There are
The 1000 gallons per minute (gpm) aqueous film
forming foam (AFFF) hangar sprinkler system is
four CIRCLE WILLIAM push buttons on the
controlled from this panel. Included are push-
hazard detection panel (five on the CG). The third
button indicators for the start of panel fault,
push-button control indicator, located under the
hazard, and lamp tests. This panel has a console
heading VENT FAN SHUTDOWN CONTROL,
status section to display certain abnormal
is used to shut down the ZEBRA vent fans and
conditions in the console.
to provide a status of the vent fans. Again, there
The first indicator, under the heading AFT
is no ON vent fan control provided by this push
VERTREP, is labeled AFFF FP-180 ON. It
button. There are three ZEBRA push buttons on
illuminates amber to indicate that the foam
this panel (five on the CG). When ON is
proportioner serving the aft vertical replenishment
illuminated, the ZEBRA vent fans have been
station is energized. There is no control function
reset. The fourth push-button control is labeled
for the FP-180s on the DCC, only indications.
DOOR CLOSE (not applicable on the DD). This
There are three other indicators on the firemain
push button controls the fire boundary door
control panel labeled AFFF FP-180 ON. They
closure for the designated fire zone. There are four
indicate the status of the other three AFFF
DOOR CLOSE push buttons on the CG-class
stations.
hazard detection panel.
The fifth push-button control, labeled FAULT
ALARM TEST (FAULT TEST on the CG), is
The first split-legend indicator is labeled LOW
located towards the bottom, left of center of the
PRESSURE and METER (not applicable on the
panel. Depressing this push-button indicator
CG). There are nine of these indicators on the
allows the operator to test the fault circuitry of
firemain control panel to monitor firemain
the alarm cards for the left portion of the hazard
9-22
