bilge levels, and so forth). It also monitors the ship's
control system of the PHM. It performs the same
firemain and can control the fire pumps.
functions as the FSEE on other gas turbine-powered
DATA MULTIPLEX SYSTEM (DMS).-- A general-
B U S TIE BREAKER (BTB).-- A device used to
purpose information transfer system that provides
connect one main switchboard to another main
data transfer for most of the major systems aboard
the DDG-51 class ships.
BUS.-- An uninsulated power conductor (a bar or wire)
DEMAND DISPLAY INDICATOR (DDI).-- A
usually found in a switchboard.
numerical display that is used to read values of
parameters within the engineering plant.
adjustment or marking a scale so that the readings
DIGITAL-TO-ANALOG CONVERSION (D/A or
of an instrument conform to an accepted standard.
DAC).-- A conversion that produces an analog
(2) The checking of a reading by comparison with
output in the form of voltage or current from a
an accepted standard.
CASUALTY.-- An event or series of events in progress
DIRECT CURRENT.-- An essentially constant value
during which equipment damage and/or personnel
electric current that flows in one direction.
injury has already occurred. The nature and speed
of these events are such that proper and correct
DROOP MODE.-- This mode is normally used only for
procedural steps will only serve to limit equipment
paralleling with shore power. This mode provides a
damage and/or personnel injury.
varying frequently for any varying load and droop
CENTRAL CONTROL STATION (CCS).-- The main
operating station from which a majority of the
ELECTRIC PLANT CONTROL ELECTRONICS
engineering plant machinery can be controlled and
ENCLOSURE (EPCEE).-- The EPCEE is part of
the EPCE. It contains power supplies that provide
C E N T R A L INFORMATION SYSTEM EQUIP-
the various operating voltages required by the
MENT (CISE).-- The CISE is located in the CCS
EPCC on the CG- and DD-class ships.
a n d is part of the PAMISE. It includes the
general-purpose digital computer (ECU), S/CE No.
(EPCC).-- This console contains the controls and
1, and supporting equipment.
indicators used to remotely operate and monitor the
C I R C U I T B R E A K E R ( C B ) . -- A device used to
generators and the electrical distribution system on
energize/de-energize an electrical circuit and for
the DD-, DDG-, CG-, and FFG-class ships.
interrupting the circuit when the current becomes
ELECTRIC PLANT CONTROL EQUIPMENT
(EPCE).-- The EPCE provides centralized remote
CONTROL SYSTEMS ELECTRONIC PACKAGE
control of the GTGS and electrical distribution
(CSEP).-- The CSEP acts as a signal conditioning
equipment. The EPCE includes the EPCC and
interface between the commands generated and the
EPCEE and is located in the CCS.
execution by the equipment on the LCACs.
ELECTROLYTE.-- A substance used in batteries in
CONTROLLABLE REVERSIBLE PITCH (CRP)
PROPELLER.-- A propeller whose blade pitch can
by chemical action.
be varied to control the amount of thrust in both the
ahead and astern directions. (Known as controllable
ELECTRONIC GOVERNOR (EG).-- A system that
uses an electronic control unit with an
e l e c t r o h y d r a u l i c governor actuator (EGA) to
C U R R E N T . -- The movement of electrons past a
control and regulate engine speed.
reference point. The passage of electrons through a
conductor. It is measured in amperes.
E M E R G E N C Y . -- An event or series of events in
progress that will cause damage to equipment
DAMAGE CONTROL CONSOLE (DCC).-- This
unless immediate, timely, and correct procedural
c o n s o l e is located in the CCS and provides
steps are taken.
monitoring for hazardous conditions (fire, high