so forth). It also monitors the ship's firemain and
propulsion control system of the PHM. It performs
can control the fire pumps.
the same functions as the FSEE on other gas
turbine-poweredships.
DATA MULTIPLEX SYSTEM (DMS). A general-
purpose information transfer system that provides
BUS TIE BREAKER (BTB). A device used to
data transfer for most of the major systems aboard
connect one main switchboard to another main
the DDG-51 class ship.
switchboard.
DEMAND DISPLAY INDICATOR (DDI). A
BUS. An uninsulated power conductor (a bar or wire)
numerical display that is used to read values of
usually found in a switchboard.
parameters within the engineering plant.
CALIBRATION. (1) The operation of making an
DIGITAL-TO-ANALOG CONVERSION (D/A or
adjustment or marking a scale so that the readings
DAC). A conversion that produces an analog
of an instrument conform to an accepted standard.
output in the form of voltage of current from a
(2) The checking of reading by comparison with an
digital input.
accepted standard.
DIRECT CURRENT. An essentially constant value
CASUALTY. An event or series of events in progress
electric current that flows in one direction.
during which equipment damage and/or personnel
injury has already occurred. The nature and speed
DROOP MODE. This mode is normally used only for
of these events are such that proper and correct
paralleling with shore power. This mode provides a
procedural steps will only serve to limit equipment
varying frequency for any varying load. Droop
damage and/or personnel injury.
mode inhibits the load sharing circuitry.
CENTRAL CONTROL STATION (CCS). The main
ELECTRIC PLANT CONTROL ELECTRONICS
operating station from which a majority of the
ENCLOSURE (EPCEE). The EPCEE is part of
engineering plant machinery can be controlled and
the EPCE. It contains power supplies that provide
monitored.
the various operating voltage required by the EPCC
on the CG- and DD-class ships.
CENTRAL INFORMATION SYSTEM EQUIP-
MENT (CISE). Located in CCS and is part of the
ELECTRIC PLANT CONTROL CONSOLE
PAMISE. It includes the general-purpose digital
(EPCC). This console contains the controls and
computer (ECU), S/CE No. 1, and supporting
indicators used to remotely operate and monitor the
equipment.
generators and the electrical distribution system.
CIRCUIT BREAKER (CB). A device used to
ELECTRIC PLANT CONTROL EQUIPMENT
energize/de-energize an electrical circuit and for
(EPCE). The EPCE provides centralized remote
interrupting the circuit when the current becomes
control of the GTGS and electrical distribution
excessive.
equipment. The EPCE includes the EPCC and
EPCEE and is located in CCS.
CONTROL SYSTEMS ELECTRONIC PACKAGE
(CSEP). Acts as a signal conditioning interface
ELECTROLYTE. A substance used in batteries in
between the commands generated and the execution
which the conduction of electricity is accompanied
by the equipment on the LCACs.
by chemical action.
CONTROLLABLE REVERSIBLE PITCH (CRP)
ELECTRONIC GOVERNOR (EG). A system that
PROPELLER. A propeller whose blade pitch can
u s e s an electronic control unit with an
be varied to control the amount of thrust in both the
electrohydraulic governor actuator (EGA) to
ahead and astern directions. (Known as controllable
control and regulate engine speed.
pitch propeller (CPP) on FFG-class ships.)
EMERGENCY. An event or series of events in
CURRENT. The movement of electrons past a
progress which will cause damage to equipment
reference point. The passage of electrons through a
unless immediate, timely, and correct procedural
conducts. It is measured in amperes.
steps are taken.
ENGINEERING CONTROL AND SURVEIL-
DAMAGE CONTROL CONSOLE (DCC). This
LANCE SYSTEM (ECSS). An automatic
console is located in CCS and provides monitoring
for hazardous conditions (tire, high bilge levels, and
electronic control and monitoring system using
AI-2
