Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Public 2022 > 40EP-9EO07 LOOP / LOFC > Flashcards

40EP-9EO07 LOOP / LOFC Flashcards

1
Q

What are the entry conditions for 40EP-9EO07 LOOP / LOFC?

A
  • LOOP (NAN-S01 & S02)
  • Loss of forced circ.
  • SBO and at least 1 PB is restored NOT with SBOG
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the major mitigating steps for 40EP-9EO07 LOOP / LOFC

A
  • Stabilize plant
  • Determine stay in HSBY or SDC
  • Attempt to restore power
  • If power is restored, restore major plant systems/components to start RCP’s
  • If power NOT restored cooldown to SDC
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

During 40EP-9EO07 LOOP / LOFC what are the requirements to Cross-tie EW to NC priority loads?

A
  • NC is not operating

- EW train is not being used for MVA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

During 40EP-9EO07 LOOP / LOFC how long do you have to cross-tie EW to NC and what is the component of concern?

A
  • If possible do not exceed 20 minutes
  • 10 minute TCA will not be met during LOOP
  • prevents overheating and damaging RCP seals
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

During 40EP-9EO07 LOOP / LOFC, what are the requirements to cross-tie EW to PC HX’s?

A
  • NC lost and need to maintain SFP < 125°F
  • PC pumps manually started
  • EW train NOT supplying NC priority loads used
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

For 40EP-9EO07 LOOP / LOFC, what is the Reactivity Control SFSC?

A
  • < 2x10-4% ↔ or ↓

- FSCEAs inserted OR borating > 40gpm OR SDM established

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

For 40EP-9EO07 LOOP / LOFC, what is the Maintenance of Vital Auxiliaries SFSC?

A
  • At least 1 PB
  • PKA, PKC, PNA OR PKB, PKD, PNB on same train as PB
  • Bus plus
  • DFO xfer pump maintaining day tank level
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

For 40EP-9EO07 LOOP / LOFC, what is the RCS Inventory SFSC?

A
  • Lpzr 10-65%
  • ≥ 24°F subcooled
  • RVUH ≥ 16%
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

For 40EP-9EO07 LOOP / LOFC, what is the RCS Press Control SFSC?

A
  • P/T limits
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

For 40EP-9EO07 LOOP / LOFC, what is the Core Heat Removal SFSC?

A
  • RCS ▲T < 65°F (RCP Off)
  • RCS ▲T < 10°F (RCP On)
  • ≥ 24°F subcooled
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

For 40EP-9EO07 LOOP / LOFC, what is the RCS Heat Removal SFSC?

A
  • 1 SGWL 45-60% NR or restoring

- Tc ↔ or ↓

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

For 40EP-9EO07 LOOP / LOFC, what is the Containment Isolation SFSC?

A
  • < 2.5 psig

- No valid CNTMT or 2° RU alarm or rise in activity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

For 40EP-9EO07 LOOP / LOFC, what is the CNTMT Temp and Press Control SFSC?

A
  • < 117°F
  • < 125°F during LOOP
  • < 2.5 psig
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

During 40EP-9EO07 LOOP / LOFC, What actions are required if a LOOP has occurred and no CH pumps are running?

Why?

A
  • Isolate Seal Injection
  • Isolate B/O
  • Reset Anti-pump on always running CH pump
  • Prevents seal damage due to rapid cooldown when restoring CH
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

During 40EP-9EO07 LOOP / LOFC what action is required if CW flow to the condensers is lost?

Why?

A
  • Actuate MSIS
  • Prevent over pressurizing condensers
  • SGBD isolates minimizes C/D
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How does the order/priority of AF change during a LOOP?

A
  • Use AFN last

- no condensate pumps, water hammer concerns with AFN

17
Q

During 40EP-9EO07 LOOP / LOFC, if Lpzr is > 65% and LD is not aligned, what actions are taken to maintain Lpzr?

A
  • Stop CH pumps if cooling is aligned and not needed for boration
  • Isolate B/O if Seal #2 outlet approaches 250°F
  • C/D RCS if unable to stop CH pumps
  • C/D is permitted before SDM established
18
Q

During 40EP-9EO07 LOOP / LOFC, if P/T limits are exceeded what action is required?

What action is required if C/D limit exceeded?

A
  • Stop C/D
  • Depressurize
  • Control CH/ LD/ HPSI flow
  • Stop C/D
  • Stabilize pressure
  • Soak
19
Q

How is Natural circulation verified?

A
  • Loop ▲T < 65°F
  • Tc and Th ↔ or ↓
  • ≥ 24°F subcooled using CET
  • < 30°F ▲T b/w Th and max quadrant CET
20
Q

If Natural Circulation cannot be verified, what is required?

A
  • Ensure Proper Feed flow/ Steam Flow
21
Q

What is loop transit time during Natural Circulation

A
  • 5 - 15 minutes
22
Q

While in natural circulation, what does an abnormal ▲T b/w Th and CET indicate?

A
  • Possible blockage in loop

- Uncoupling of core and loop

23
Q

During 40EP-9EO07 LOOP / LOFC, if power is lost to Unit 1 NAN-S06, How long do you have to start the SBOG and why

A
  • 1 Hour
  • Energize NAN-S07
  • SBOG batteries rated for 1 hour
24
Q

During 40EP-9EO07 LOOP / LOFC, what are the requirements to energize SWYD loads from the SBOG?

A
  • Not expected to be restored in 2 HOURS

- No thunderstorm activities

25
Q

During 40EP-9EO07 LOOP / LOFC and it is desired to break vacuum, but speed is NOT available what alternate indication can be used?

A
  • Wait ≥ 20 minutes
26
Q

During 40EP-9EO07 LOOP / LOFC if power is NOT expected to be restored in 1 hour what additional actions are taken?

A
  • Vent generator H2

- Load shed NKN-M46

27
Q

How long is the ESOP available following a load shed of NKN-M46

A
  • 7 Hours
28
Q

Following DC load shed, how is Control Power aligned and why?

A
  • U1 - NKN-M45 (SBOG Alignment)

- U2/3 - NKN-M46 (SWYD brkr control)

29
Q

While recovering from 40EP-9EO07 LOOP / LOFC who does Unit 1 coordinate with to restore S/U XFMRS

A
  • ECC

- SRP

30
Q

While restoring from 40EP-9EO07 LOOP / LOFC if a bus is powered from another units DG, who must provide guidance for restoration and why?

A
  • TSC

- Brkr interlocks

Public 2022 (46 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions