ELECTRIC PLANT CONTROL ELEC-
CURRENT --The movement of electrons past
TRONICS ENCLOSURE (EPCEE)--The EPCEE
a reference point. The passage of electrons
is part of the EPCE. It contains power supplies
through a conductor. It is measured in amperes.
that provide the various operating voltage required
DAMAGE CONTROL CONSOLE (DCC)--
by the EPCC on the CG- and DD-class ships.
This console is located in CCS and provides
monitoring for hazardous conditions (fire, high
ELECTRIC PLANT CONTROL CONSOLE
bilge levels, and so forth). It also monitors the
(EPCC)--This console contains the controls and
ship's firemain and can control the fire pumps.
indicators used to remotely operate and monitor
the generators and the electrical distribution
DATA MULTIPLEX SYSTEM (DMS)--A
system.
general-purpose information transfer system that
provides data transfer for most of the major
ELECTRIC PLANT CONTROL EQUIP-
systems aboard the DDG-51 class ship.
MENT (EPCE)--The EPCE provides centralized
remote control of the GTGS and electrical
DEAERATOR--A device that removes air
distribution equipment. The EPCE includes the
from oil (for example, the lube oil storage and
EPCC and EPCEE and is located in CCS.
conditioning assembly (LOSCA) tank which
separates air from the scavenge oil).
ELECTRONIC GOVERNOR (EC)--A system
DEMAND DISPLAY INDICATOR (DDI)--A
that uses an electronic control unit with an electro-
numerical display that is used to read values of
hydraulic governor actuator (EGA) to control and
parameters within the engineering plant.
regulate engine speed.
DEMISTERS--A moisture removal device
EMERGENCY --An event or series of events
(GTE intake system) that separates water from
in progress which will cause damage to equipment
air.
unless immediate, timely, and correct procedural
steps are taken.
DENSITY --The quantity of matter contained
in a body.
ENGINEERING CONTROL AND SURVEIL-
LANCE SYSTEM (ECSS)--An automatic elec-
DIFFERENTIAL PRESSURE--The difference
tronic control and monitoring system using analog
between two pressures measured with respect to
and digital circuitry to control the propulsion and
a common basis.
electric plant. The ECSS consists of the EPCE,
PAMCE, PAMISE, PLOE, and SCE on the CG-
DIFFUSER --A device for reducing the velocity
and DD-class ships.
and increasing the static pressure of a medium
passing through a system.
ENGINEERING OPERATIONAL SEQUENC-
DIGITAL-TO-ANALOG CONVERSION (D/A
ING SYSTEM (EOSS)--A two-part system of
or DAC)--A conversion that produces an analog
operating instructions bound in books for each
output in the form of voltage of current from a
watch station. It provides detailed operating
digital input.
procedures (EOP) and casualty control procedures
(EOCC) for the propulsion plant.
DIRECT CURRENT--An essentially constant
value electric current that flows in one direction.
ENGINE ORDER TELEGRAPH (EOT)--
A non-voice communication system provided
DROOP MODE--This mode is normally used
between the command station (pilot house), CCS,
only for paralleling with shore power. This mode
and the main engine room.
provides a varying frequency for any varying load.
Droop mode inhibits the load sharing circuitry.
EXECUTIVE CONTROL UNIT (ECU)--A
computer (part of PAMISE) that is the nucleus
EDUCTOR --A mixing tube (jet pump) that
of the information center of the ECSS. The ECU
is used as a liquid pump to dewater bilges and
gathers data information from the ship's propul-
tanks. A GTE exhaust nozzle creates an eductor
sion, auxiliary, and electric plant equipment.
effect to remove air from the enclosure.
AI-3
