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Module 1 - Electrical > P75 - Div 1/2 Diesels > Flashcards

P75 - Div 1/2 Diesels Flashcards

1
Q

What’s the maximum load for the diesel unless necessary for safe plant conditions?

A

5740 kw

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2
Q

What’s the maximum load for break-in following a ring replacement?

A

7000 kw

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3
Q

What’s the starting air pressure lowering logic?

A

220 - psig motor driven compressor starts
200 psig - low starting air alarm
160 psig - tech spec limit
120 psig - auto start not available alarm
50 psig - low control air pressure alarm
40 psig - diesel trip

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4
Q

What is the power supply for the jacket water heater and pump? (ESF or BOP)

A

BOP

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5
Q

what is the purpose of the jacket water heater and pump?

A

maintain jacket water approximately 160 deg F when diesel in standby

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6
Q

Where should the crane be stored in the diesel room?

What should happen if it’s not stored there and why?

A

West

INOP the diesel due to seismic concerns

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7
Q

What should the CRO do if a fire is detected in the Diesel room?

A

stop the fans in the room with the fire, and

start the fans in all rooms not affected

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8
Q

What temp does the outside air fan maintain the room at?

A

<120 degrees F

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9
Q

What trips are in for a DIV 1 or 2 Local/Emergency start?

A

Overspeed
All electrical

“OverAlls”

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10
Q

How many starting air trains are there for the diesels and how many times can each train start the diesel?

A

2 trains, 5 times each from 160 psig

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11
Q

What trips are in for a LOP/BUV?

A

Differential
Overcurrent with voltage restraint
Generator ground overcurrent
All mechanical

“DOG-All”

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12
Q

What trips are in for a LOCA?

A

Generator differential and overspeed

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13
Q

***Where is the generator differential sensed from?

A

At the generator, (Breaker must be closed to detect it)

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14
Q

How long after the diesel trip can it be restored?

Can this be overridden?

A

2 minutes

can be overridden with an emergency start or ECCS initiation

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15
Q

What pump is the primary supplier for fuel to the diesel engine?

A

Engine driven fuel oil pump

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16
Q

what is the power supply of the lube oil oil heater pump? (ESF or BOP)

A

BOP

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17
Q

What is the purpose of the lube oil heater pump?

A

Prelubes essential diesel parts and maintains lube oil approximately 170 deg F while in standby

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18
Q

How long do starting solenoids stay energized?

A

Until engine speed >200 rpm

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19
Q

When is flash field energized?

A

> 200 rpm

20
Q

What is the power supply for the flash field?

A

11DA, 11DB

21
Q

What is the tech spec limit for the fuel oil day tank?

A

220 gallons for 30 minutes @ max load post-LOCA

22
Q

What is the purpose of the fuel oil drip return pump?

A

Pumps excess fuel in the drip tank back to the day tank

23
Q

What is the power supply to the fuel oil drip return pump? (ESF or BOP)

A

BOP

24
Q

What happens if the fuel oil drip return pump fails?

A

Fuel oil is routed to the diesel oily waste sump

25
Q

How long can the diesel run without adding additional water to the jacket water standpipe?

A

30 days

26
Q

What must you perform after diesel output breaker is racked out and back in?

A

Run diesel with breaker closed synced to the grid

27
Q

How does diesel start for LOCA?

A

attempts to start continuously until 120 psig

28
Q

How does diesel start for BUV signal?

A

5 seconds, regardless of air pressure. Then it must be reset

29
Q

What is the power supply to the fuel oil transfer pumps? (ESF or BOP)

A

ESF

30
Q

What are the generator electrical trips?

A

“RULOGG”

Reverse power
Underfrequency
Loss of excitation
Overcurrent with ground restraint
Ground overcurrent
Generator differential
31
Q

What are the diesel mechanical trips?

A

Low lube oil pressure ———————–30 psig
Low turbo oil pressure ———————-15 psig
Low control air pressure ——————-40 psig
High lube oil temp —————————-200 deg F
High bearing temp —————————228 deg F
High jacket water temp ——————–200 deg F
High crankcase pressure ——————3 psig
High engine vibration ————————12 mils
Engine overspeed —————————–517.5 rpm

32
Q

What level does fuel oil transfer pump start and stop?

A

34” - 41”

33
Q

Auto start and stops of motor driven air compressor for Div 1 and 2 diesels?

A

On - 220 psig

Off - 245 psig

34
Q

What is the power supply to the motor driven air compressors for div 1 and 2 diesels? (ESF or BOP)

A

BOP

35
Q

What are the above the line requirements?

A

Stored diesel fuel oil, lube oil, and air shall be within required limits

36
Q

What’s the tech spec numbers?

A

3.8.3

37
Q

Can each diesel have separate LCO logs for the concerns?

A

Yes

38
Q

What is the tech spec limit for diesel fuel oil level?

A

9.6 feet or 68,744 gallons

39
Q

How long can diesel run at the tech spec imit?

A

7 days

40
Q

What is the power supply to the motor driven fuel oil

booster pump? (AC or DC)

A

DC

41
Q

When does the motor driven fuel oil pump auto start?

A

When HS in Auto,
Pump starts on a 1.5 second time delay when:
the Engine driven fuel oil pump discharge pressure decreases to 10 psig, AND

engine control air pressure is >45 psig.

42
Q

What is the tech spec level for the jacket water standpipe?

A

146”

43
Q

When will the motor driven jacket water pump auto start?

stop?

A

Engine speed > 425 rpm and pressure < 15 psig

stops > 70 psig

44
Q

What is the power supply to the motor driven Lube Oil pump (AC or DC)

A

DC

45
Q

When will the motor driven lube oil pump auto start?

A

Engine > 425 rpm and pressure < 30 psig (after 5 second time delay)

46
Q

When will the motor driven lube oil pump trip?

A

Pressure > 110 psig

Module 1 - Electrical (8 decks)

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