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PEO > Propulsion > Flashcards

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
Q

GT: What does 13th Stage Bleed Air provide?

A
  • Stage 2 HPT nozzle cooling
  • PT balance piston cavity pressurization
26
Q

GT: What is 16th Stage Bleed Air used for?

A
  • Anti-icing (customer bleed air)
27
Q

GT: What are the 5 stages of the start-up sequence?

A
  • Select On
  • 15 seconds
  • 30 seconds
  • 40 seconds
  • 120 second
28
Q

GT: What happens during ON phase of GT start-up sequence?

A
  • 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
Q

GT: What happens during 15 second phase of start sequence?

A
  • 300 NGG reached
30
Q

GT: What happens during 30 second phase of start sequence?

A
  • Igniters energized
  • FSOV(s) energized
  • Fail to light off time delay function is initiated
31
Q

GT: What happens during 40 second phase of start up sequence?

A
  • T4.8 400 deg/NGG 1700
  • Engine operating timer energized
  • Engine light off counter advanced 1 count
  • GG accelerates
32
Q

GT: What happens during 120 second phase of start up sequence

A
  • 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
Q

GT: Differences between 2500 and 2500+?

A

-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
Q

GT: What type of pump is VSV hydraulic pump?

What does it provide pressure to?

A
  • Positive displacement gear type pump.
  • VSV Actuator and FMV Servo Valve and Actuator Assembly
35
Q

GT: Where is VSV Pump attached?

A

Left/FWD side of AGB

36
Q

GT: Intake flow path

A
  • 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
Q

GT: What is bypassed if BID(s) are opened?

A

Moisture separators

38
Q

GT: When do blow in doors open?

A
  • 8.5” H2O after 10 sec delay
  • 12” H2O no time delay
39
Q

GT: How often is OLWW required?

A
  • 48 hours or as required (increased vibes or activation of CMWD)
40
Q

GT: How often is crank wash required?

A

400 hours or as required (increased vibes, T4.8, or CMWD)

41
Q

GT: What is minimum NGG for OLWW?

A
  • 8500 NGG
42
Q

MRG: LO logics - Stand by pump starts in slow

A
  • 13 PSIG
43
Q

MRG: LO Logics - Stand-by shifts to fast and alarm sounds

A
  • 11 PSIG
44
Q

MRG: LO Logics - Emergency plant slow-down

A
  • 9 PSIG
45
Q

MRG: LO Logics - C/D Pump Starts, emergency plant shutdown

A

6 PSIG

46
Q

GT: How many igniters?
- What type?
- Where located?
- Maximum duty cycle?

A
  • 2
  • Surface Gap Type
  • CRF 4 and 5 O’Clock
  • 90s on and 2 start cycles w/in 30 minutes.
47
Q

GT: What provides cooling for igniters?

What prevents carbon buildup?

A
  • internal passages
  • air vents
48
Q

GT: What is control signals for ignition exciters?

Where are they located?

A
  • 115V 60 Hz
  • Right side of module floor
49
Q

GT: When not in operation, both sides of igniter circuit are __________.

A

Grounded

50
Q

GT: What 5 events cause engine controller to initiate e-stop?

A
  • MGGOS (10,200 NGG, NGG A&B Sensor Failure)
  • MHTIT (T4.8 1647 deg)
  • MLPTO (6 PSIG)
  • MGGS (PS3 A&B Sensor Failure)
51
Q

MRG: When is SICLOS required every 4 hours?

A
  • 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
Q

MHBRG: When do you proceed to Immediate Actions for:
- MRG LO
- MRG Babbit
- TB LO

A
  • 185 or 55 diff
  • 270 or 20 after alarm
  • 180 or 50 for LO; 250 babbit
53
Q

MHBRG: In space actions?

A
  • monitor and report affected bearing temp, flow, conditions.
  • monitor all bearings
  • RLOC, LOSRG, Sample LOC, Shift LODS.
54
Q

EOSS: When are deviations allowed?

A
  • endangers pers/equip
  • EOSS doesn’t match config
  • component/system inop (DFS)
  • Pending software updates
  • Adherence to CLAD
  • RMD
55
Q

APM: 5 states of operation?

A
  • OOS
  • Off
  • STBY
  • On
  • Online
56
Q

APM: Off status alignment

A
  • CB closed
  • APS energized
  • APM stopped/disconnected from throttle
  • Motor brake engaged
57
Q

APM: Stand-by Status Alignment?

A
  • CB Closed
  • APS energized
  • APM not running; but ready to start
  • Brake energized
58
Q

HSU: Operating Pressure?

  • How many flow rates, what are they?
A
  • 5000 PSIG
  • 2: GT Start, GT Water Wash (Crank)
59
Q

HSU: What is the HSU cooled by?

A

Chilled water

60
Q

HSU: What size is oil reservoir?

A

55 gallons

61
Q

CPP: How long must CPP be purified daily?

A

4 hours if clear and bright

62
Q

CPP: Head tank size?

Low level alarm?

A
  • 40 gallons
  • 15 gallons

PEO (2 decks)

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