Quantcast Carbon Dioxide and Halon Gas Release (CKT FR)
 

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circuitry may be verified with its test circuit, as
dual system, one for the magazine inner structure and
previously described.
one for the outer.
Power supplies for the bearing and stator
For each machinery space, auxiliary machinery
indicating and alarm circuit associated with the
room, and the engine room, a pressure switch (manual
electric plant control console are taken from the
reset) is installed in the Halon actuating line at the
console. Power supply for the circuits associated with
remote actuating station in the CCS. This switch
the IC/SM alarm switchboards is taken from these
actuates the following:
switchboards.
-- An alarm module on the circuit F alarm
switchboard in the damage control area of the
CARBON DIOXIDE AND HALON
CCS, operation of which has been previously
GAS RELEASE (CKT FR)
described
Circuit FR provides a means of indicating when
-- Audible alarms, type IC/B3S4 bells, in the
carbon dioxide or Halon gas is released in compart-
machinery space protected
ments protected by a fixed-gas, fire-extinguishing
system. This system is classified as nonvital readiness
A rotating red beacon in the space protected
class 1.
-- A two-dial lamp-type indicator (red ALARM
Two dial lamp indicators with red lens or white
and white POWER-ON lenses) outside each
lens are installed at the access to each compartment
access to the protected space
that is to be monitored and at the local actuating
A rotary snap switch is installed at each local
stations for machinery spaces and the gas turbine
Halon actuating station that will silence the audible
enclosures.
signals and maintain the red light at each access until
Single lamp-type indicators (red HALON RLSE
reset.
lens) are installed at the local actuating station for all
of the diesel enclosures, the flammable liquid
Pressure switches, one each in the discharge lines
storeroom, and the paint mixing and issue room.
of the primary and reserve banks of Halon cylinders,
energize a two-dial lamp-type indicator (two red
Bells, types IC/B2S4 (EXP) and IC/B3S4 are
lenses--HALON RLS PRI and HALON RLS RSV)
installed in the protected spaces.
located at each local actuating station and on the
Rotary flashing red beacons are installed in the
damage control console in the CCS.
machinery spaces to supplement the bells, due to the
The installation for each ship's service diesel
high noise levels.
generator enclosure consists of a pressure-operated
Alarm modules of the circuit F-type IC/SM
switch (manual reset) in the Halon actuating line in the
switchboard in the damage control area of the CCS are
CCS, which energizes the following when the gas is
assigned to this system.
released:
Switches at the PCC activate the GT Halon
-- Alarm signals on the alarm switchboard for
system, Switches at the turbine enclosure energize a
circuit Fin the damage control area of CCS
Halon ready indicator at the console.
-- A type IC/BS4(EXP) bell within the space
A separate installation is provided for each
compartment protected. The protected compartments
-- A two-dial lamp-type indicator (red ALARM
are the Mk 13 Mod 4 GMLS magazine, auxiliary
lens and white POWER-ON lens) installed
machinery rooms No. 1, 2, and 3, SS diesel generator
outside of each access to the protected space
enclosures No. 1, 2, 3, and 4, the engine room, the
A rotary snap switch is installed at the local Halon
flammable liquids storeroom, the gas cylinder
actuating station to de-energize the audible alarm
storeroom, and the paint mixing and issue room,
within the space while retaining the red light at the
The configuration of the system and number of
access.
systems a compartment may have will depend on the
A pressure switch in the discharge line of the
size of the compartment, the equipment in the
Halon bank energizes a single dial (red HALON RLS
compartment, and the purpose of the compartment.
lens) lamp-type indicator at the local Halon actuating
For example, the Mk 13 Mod 4 GMLS magazine is a

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