P75 - Div 1/2 Diesels

Question 1

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

Answer 1

5740 kw

Question 2

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

Answer 2

7000 kw

Question 3

What’s the starting air pressure lowering logic?

Answer 3

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

Question 4

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

Answer 4

BOP

Question 5

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

Answer 5

maintain jacket water approximately 160 deg F when diesel in standby

Question 6

Where should the crane be stored in the diesel room?

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

Answer 6

West

INOP the diesel due to seismic concerns

Question 7

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

Answer 7

stop the fans in the room with the fire, and

start the fans in all rooms not affected

Question 8

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

Answer 8

<120 degrees F

Question 9

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

Answer 9

Overspeed
All electrical

“OverAlls”

Question 10

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

Answer 10

2 trains, 5 times each from 160 psig

Question 11

What trips are in for a LOP/BUV?

Answer 11

Differential
Overcurrent with voltage restraint
Generator ground overcurrent
All mechanical

“DOG-All”

Question 12

What trips are in for a LOCA?

Answer 12

Generator differential and overspeed

Question 13

***Where is the generator differential sensed from?

Answer 13

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

Question 14

How long after the diesel trip can it be restored?

Can this be overridden?

Answer 14

2 minutes

can be overridden with an emergency start or ECCS initiation

Question 15

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

Answer 15

Engine driven fuel oil pump

Question 16

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

Answer 16

BOP

Question 17

What is the purpose of the lube oil heater pump?

Answer 17

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

Question 18

How long do starting solenoids stay energized?

Answer 18

Until engine speed >200 rpm

Question 19

When is flash field energized?

Answer 19

> 200 rpm

Question 20

What is the power supply for the flash field?

Answer 20

11DA, 11DB

Question 21

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

Answer 21

220 gallons for 30 minutes @ max load post-LOCA

Question 22

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

Answer 22

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

Question 23

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

Answer 23

BOP

Question 24

What happens if the fuel oil drip return pump fails?

Answer 24

Fuel oil is routed to the diesel oily waste sump

Question 25

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

Answer 25

30 days

Question 26

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

Answer 26

Run diesel with breaker closed synced to the grid

Question 27

How does diesel start for LOCA?

Answer 27

attempts to start continuously until 120 psig

Question 28

How does diesel start for BUV signal?

Answer 28

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

Question 29

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

Answer 29

ESF

Question 30

What are the generator electrical trips?

Answer 30

"RULOGG" ``` Reverse power Underfrequency Loss of excitation Overcurrent with ground restraint Ground overcurrent Generator differential ```

Question 31

What are the diesel mechanical trips?

Answer 31

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

Question 32

What level does fuel oil transfer pump start and stop?

Answer 32

34" - 41"

Question 33

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

Answer 33

On - 220 psig | Off - 245 psig

Question 34

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

Answer 34

BOP

Question 35

What are the above the line requirements?

Answer 35

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

Question 36

What's the tech spec numbers?

Answer 36

3.8.3

Question 37

Can each diesel have separate LCO logs for the concerns?

Answer 37

Yes

Question 38

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

Answer 38

9.6 feet or 68,744 gallons

Question 39

How long can diesel run at the tech spec imit?

Answer 39

7 days

Question 40

What is the power supply to the motor driven fuel oil | booster pump? (AC or DC)

Answer 40

DC

Question 41

When does the motor driven fuel oil pump auto start?

Answer 41

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.

Question 42

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

Answer 42

146"

Question 43

When will the motor driven jacket water pump auto start? stop?

Answer 43

Engine speed > 425 rpm and pressure < 15 psig stops > 70 psig

Question 44

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

Answer 44

DC

Question 45

When will the motor driven lube oil pump auto start?

Answer 45

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

Question 46

When will the motor driven lube oil pump trip?

Answer 46

Pressure > 110 psig