engine LO supply. The first edgewise meter,
VIBRATION Section
labeled COOLER DISCHARGE TEMP, monitors
This section has an alarm indicator, an
the temperature of the LOSCA cooler outlet.
The second edgewise meter, labeled SUPPLY
edgewise meter, and a rotary selector switch. The
PRESSURE, monitors the engine LO supply
alarm indicator, labeled HIGH VIBRATION,
pressure. The indicator, labeled LOW ENGINE
illuminates and sounds an alarm when a GTE
OIL PRESS, illuminates and sounds an alarm
vibration exceeds the maximum set point. These
when the engine LO pressure is below 15
maximum set points are GG at 4 mils and PT at
psig.
7 mils. An automatic shutdown occurs when GG
vibration reaches 7 mils or PT vibration
reaches 10 mils. The edgewise meter, labeled
POWER TURBINE and
VIBRATION, will display the vibration on the
GTE at the position selected by the rotary switch.
OUTPUT Section
The rotary selector switch, labeled GAS
This section (J) has six indicators, an edgewise
GEN/POWER TURBINE, is a four-position
meter, and three push-button indicators. The first
switch. It allows you to look at the two different
indicator, labeled FLAME OUT, illuminates and
vibration pickups. One of the pickups is located
sounds an alarm to alert you if conditions for a
on the GG and the other is on the PT. Each
flameout exist. This condition occurs if T5.4
pickup senses both GG and PT vibration. A
drops below 400F when the fuel manifold
tracking filter for each pickup separates GG
pressure is above 50 psig. It also initiates an
vibration from PT vibration, depending on
automatic shutdown. The second indicator,
vibration frequency.
labeled INLET TEMP HIGH, illuminates and
sounds an alarm to alert the operator of a high
SEAWATER COOLING SUPPLY
T5.4. This will occur at 1500F PT inlet
PRESSURE and REDUCTION GEAR
temperature.
LUBE OIL REMOTE BEARING
PRESSURE Meters
The edgewise meter, labeled SPEED, is used
to monitor the speed of the PT. Associated with
These edgewise meters are mirror images of
this meter is an indicator and push button. The
each other as to location, but not to function.
indicator, labeled OVERSPEED TRIP, illumi-
The edgewise meter (G) labeled SEAWATER
nates when an overspeed trip occurs. The
COOLING SUPPLY PRESSURE is located on
indicator is set at 3960 40 rpm. The push-button
the engine 1B panel and is used to display the
indicator, labeled OVERSPEED TRIP RESET,
seawater supply pressure to the reduction gear
is used to reset the overspeed trip circuitry after
cooler. Below this edgewise meter is a push-
an overspeed trip occurs.
button indicator labeled LAMP TEST. It is
used to test the lamps in the engine 1B section
of the LOP. The edgewise meter (H) labeled
REDUCTION GEAR LUBE OIL REMOTE
CAUTION
BEARING PRESSURE is located on the engine
1A panel. It displays the MRG most remote
Do not depress the OVERSPEED TRIP
bearing pressure. Below this meter on the engine
RESET until the GG has come to a
1A panel is an alarm indicator labeled REMOTE
complete stop. The fuel valves can re-open,
BEARING LOW PRESS. This indicator illumi-
causing a post-shutdown fire.
nates and sounds an alarm which alerts the
operator if the most remote bearing pressure falls
The next indicator is a split-legend type labeled
below 9 psig. The LAMP TEST push button
ENGAGED/DISENGAGED. It illuminates to
below the indicator tests the lamp status for the
display the actual position of the turbine brake.
engine 1A panel.
The second push-button indicator is a split-legend
type, also. It is labeled ENGAGE/DISENGAGE
ENGINE LUBE OIL Section
and controls the operation of the PT brake. The
indicator illuminates to indicate the signal that is
The ENGINE LUBE OIL section (I) has two
being sent to the turbine brake.
edgewise meters and an indicator to monitor the
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