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Propulsion Flashcards

1
Q

GTMI: What is maximum temperature for entering module?

A

140 degrees

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2
Q

GTMI: What must be done prior to entering module

A
  • EOOW Permission
  • Personnel in module signs posted at PACC and MCS WS
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3
Q

GTMI: If entering module less than 2 hours after shutdown, what PPE is required?

A

Flame retardant gloves

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4
Q

GTMI: What PPE is required for running GTMI

A
  • Flame retardant gloves
  • Double Hearing Protection
  • Eye protection
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5
Q

GTMI: How long must module cooling fans be run prior to entering module?

A

5 minutes

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6
Q

GTMI: Prior to entering module..a, b, c, d

A

A) GT SD or idle
B) HFP Deactivated
C) Safety Observer stationed at doors
D) Module CLG Fan M/C is in disabled position

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7
Q

GTMI: If immediate entry is required after normal or e-stop…a, b, c, d

A

A) Module CLG Fan off
B) Both doors open
C) Vent damper open
D) Module CLG Fan operated as needed

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8
Q

CPP: Low Sump Alarm

A

225 Gallons

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9
Q

CPP: Normal Sump Level

A

350 Gallons

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10
Q

CPP: High sump level

A

425 Gallons

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11
Q

CPP: High Temp Alarm

A

160 deg

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12
Q

CPP: Low Temp Alarm

A

80 deg

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13
Q

Shafting: How many LSB on starboard shaft?

Location?

A
  • 4
  • 1A in 1 SA
  • 1B in 1 SA
  • 1C in 3 SA
  • 1D in 3 SA
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14
Q

Shafting: How many SW lubricated bearings per shaft?

A

-3

  • 1 Stern Tube Bearing
  • 2 Strut Bearings
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15
Q

Shafting: How many shaft segments on starboard shaft?

A

7

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16
Q

MCS: What color are EOT Alarms?

Sound?

A

White

Pulsed Bell 4X

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17
Q

MCS: What color are Level 1 Alarms?

Usage?

Sound?

A
  • Red
  • Safety of machinery or personnel
  • Continuous siren
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18
Q

MCS: What color are level 2 alarms?

Usage?

Sound?

A
  • Amber
  • Machinery alarms and control transfer
  • Horn
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19
Q

MCS: What color are level 3 alarms?

Usage?

Sound?

A
  • Yellow
  • Status alerts and other alarms not level 1 and 2
  • Slow pulsed buzzer
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20
Q

MCS: What color are BIT alarms?

Sound?

A
  • Blue
  • Ooga horn
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21
Q

Shafting: What is the length of the starboard shaft?

A

224’ 2-37/64”

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22
Q

MRG: Classify MRG

A
  • Double input w/SSS Clutches and Disc Brakes
  • Double helical
  • Double reduction
  • Articulated
  • Locked train
  • Single output
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23
Q

GT: What compressor stages provide bleed air?

A
  • 9
  • 13
  • 16
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24
Q

GT: What does 9th Stage Bleed Air provide?

A
  • Sump pressurization
  • Sump cooling
  • PT Forward Seal pressurization
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25
GT: What does 13th Stage Bleed Air provide?
- Stage 2 HPT nozzle cooling - PT balance piston cavity pressurization
26
GT: What is 16th Stage Bleed Air used for?
- Anti-icing (customer bleed air)
27
GT: What are the 5 stages of the start-up sequence?
- Select On - 15 seconds - 30 seconds - 40 seconds - 120 second
28
GT: What happens during ON phase of GT start-up sequence?
- Start Reg/SD valve energized - 1200 NGG timer started - 4200 NGG timer started - Ice detector interlock bypassed - LO Sply low pressure interlock time delay started
29
GT: What happens during 15 second phase of start sequence?
- 300 NGG reached
30
GT: What happens during 30 second phase of start sequence?
- Igniters energized - FSOV(s) energized - Fail to light off time delay function is initiated
31
GT: What happens during 40 second phase of start up sequence?
- T4.8 400 deg/NGG 1700 - Engine operating timer energized - Engine light off counter advanced 1 count - GG accelerates
32
GT: What happens during 120 second phase of start up sequence
- Minimum NGG 4200/6000 NGG Idle - Igniters de-energized - Starter Reg/SD Vlv de-ener - 1200 NGG timer inactive - 4200 NGG timer inactive - Loss of FO alarm enabled - FSOV current monitor fault current ckt enabled
33
GT: Differences between 2500 and 2500+?
-13” Longer - Stage 0 BLSK - DFC, 23699 VSV actuation - Hydraulic Starter - Enhanced blade coatings - Higher eff HP Comp components - Integrated electronics controls - OLWW - HFP
34
GT: What type of pump is VSV hydraulic pump? What does it provide pressure to?
- Positive displacement gear type pump. - VSV Actuator and FMV Servo Valve and Actuator Assembly
35
GT: Where is VSV Pump attached?
Left/FWD side of AGB
36
GT: Intake flow path
- Dirty side louvers, moisture separators, clean side enclosure, clean side ducting w/turning vanes, GT plenum - Some air will go through module cooling fans
37
GT: What is bypassed if BID(s) are opened?
Moisture separators
38
GT: When do blow in doors open?
- 8.5” H2O after 10 sec delay - 12” H2O no time delay
39
GT: How often is OLWW required?
- 48 hours or as required (increased vibes or activation of CMWD)
40
GT: How often is crank wash required?
400 hours or as required (increased vibes, T4.8, or CMWD)
41
GT: What is minimum NGG for OLWW?
- 8500 NGG
42
MRG: LO logics - Stand by pump starts in slow
- 13 PSIG
43
MRG: LO Logics - Stand-by shifts to fast and alarm sounds
- 11 PSIG
44
MRG: LO Logics - Emergency plant slow-down
- 9 PSIG
45
MRG: LO Logics - C/D Pump Starts, emergency plant shutdown
6 PSIG
46
GT: How many igniters? - What type? - Where located? - Maximum duty cycle?
- 2 - Surface Gap Type - CRF 4 and 5 O’Clock - 90s on and 2 start cycles w/in 30 minutes.
47
GT: What provides cooling for igniters? What prevents carbon buildup?
- internal passages - air vents
48
GT: What is control signals for ignition exciters? Where are they located?
- 115V 60 Hz - Right side of module floor
49
GT: When not in operation, both sides of igniter circuit are __________.
Grounded
50
GT: What 5 events cause engine controller to initiate e-stop?
- MGGOS (10,200 NGG, NGG A&B Sensor Failure) - MHTIT (T4.8 1647 deg) - MLPTO (6 PSIG) - MGGS (PS3 A&B Sensor Failure)
51
MRG: When is SICLOS required every 4 hours?
- Ab ops/increase in DP - first 24 hours after shutdown greater than 7 days, DP shift >1.5 - high power or heavy seas - 48 hours after maint - IAW EOSS/EOCC
52
MHBRG: When do you proceed to Immediate Actions for: - MRG LO - MRG Babbit - TB LO
- 185 or 55 diff - 270 or 20 after alarm - 180 or 50 for LO; 250 babbit
53
MHBRG: In space actions?
- monitor and report affected bearing temp, flow, conditions. - monitor all bearings - RLOC, LOSRG, Sample LOC, Shift LODS.
54
EOSS: When are deviations allowed?
- endangers pers/equip - EOSS doesn’t match config - component/system inop (DFS) - Pending software updates - Adherence to CLAD - RMD
55
APM: 5 states of operation?
- OOS - Off - STBY - On - Online
56
APM: Off status alignment
- CB closed - APS energized - APM stopped/disconnected from throttle - Motor brake engaged
57
APM: Stand-by Status Alignment?
- CB Closed - APS energized - APM not running; but ready to start - Brake energized
58
HSU: Operating Pressure? - How many flow rates, what are they?
- 5000 PSIG - 2: GT Start, GT Water Wash (Crank)
59
HSU: What is the HSU cooled by?
Chilled water
60
HSU: What size is oil reservoir?
55 gallons
61
CPP: How long must CPP be purified daily?
4 hours if clear and bright
62
CPP: Head tank size? Low level alarm?
- 40 gallons - 15 gallons

PEO (2 decks)

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