ML091890845
| ML091890845 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom, Surry  |
| Issue date: | 08/03/2009 |
| From: | NRC/RES/DRA/PRAB |
| To: | |
| Helton, Don, RES/DRA, 301-251-7594 | |
| Shared Package | |
| ML091890792 | List: |
| References | |
| Download: ML091890845 (100) | |
Text
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-1 Appendix B:
MELCOR Peach Bottom Plant System Models
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-2 Table of Contents Table of Contents........................................................................................................... 2 Section 1: Inadvertently Stuck Open SRV....................................................................... 3 Case 1 (SRV Opening + RCIC)................................................................................... 4 Case 2 (SRV Opening + HPCI)................................................................................... 9 Case 3 (SRV Opening + CRD 2 at 10 min)................................................................ 14 Case 4 (SRV Opening + CRD 2 at 20 min)................................................................ 19 Case 4a (SRV Opening + CRD 2 at 20 min + No Rx Trip @ t=0).............................. 24 Case 5 (SRV Opening).............................................................................................. 29 Section 2: Station Blackout........................................................................................... 34 Case 1 (STSBO)....................................................................................................... 35 Case 1a (SBO + Power Recovery at Core Damage)................................................. 40 Case 2 (SBO + SRV Open at t=0)............................................................................. 45 Case 3 (SBO + RCIC)............................................................................................... 50 Case 4 (SBO + RCIC + HCTL Depressurization)...................................................... 55 Case 5 (SBO + RCIC + 2 hr DC)............................................................................... 60 Case 6 (SBO + RCIC + SRV Stuck Open)................................................................ 65 Case 7 (SBO + HPCI)............................................................................................... 70 Case 8 (SBO + HPCI + HCTL Depressurization)....................................................... 75 Case 9 (SBO + HPCI + 2hr DC)................................................................................ 80 Case 10 (SBO + HPCI + SRV Stuck Open)............................................................... 85 Section 3: Loss of Suppression Pool Cooling................................................................ 90 Case 1 (Loss of SP Cooling + RCIC)......................................................................... 91 Case 2 (Loss of SP Cooling + HPCI)......................................................................... 96
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-3 Section 1: Inadvertently Stuck Open SRV
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-4 Case 1 (SRV Opening + RCIC)
At time 0, reactor scram and SRV1 open System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS Core Uncover (hr)
Core Damage (hr) 1 Yes No Yes No AC/DC No No No No No Summary of Key Events Event Time (hr)
Reactor trip, SRV1 Open 0
Downcomer level first reaches L2 0.07 RCIC first started (CST injection mode) 0.08 Downcomer level reaches L1 0.37 Downcomer level below TAF 0.37 LPCI first started 0.51 RCIC pump isolation (low steam line pressure < 75 psig) 0.82 Gap release (1173 K)
Core damage (max temp > 2200F) 0 1
2 3
4 5
6 7
8 0
5000 10000 15000 20000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-5 0
10 20 30 40 50 60 70 80 90 100 0
5000 10000 15000 20000 time [sec]
Mass Flow Rate [kg/s]
SV->DW SRV1(ADS)
SRV2(ADS)
SRV3(ADS)
SRV4(ADS)
SRV5(ADS)
SRV6 SRV7 SRV8 SRV9 SRV10 SRV11 Only SRV1(ADS) Open 0
2 4
6 8
10 12 14 16 0
5000 10000 15000 20000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-6 0
5 10 15 20 25 30 35 40 0
5000 10000 15000 20000 time [sec]
Total Mass Flow Rate [kg/s]
100 200 300 400 500 600 700 800 900 0
5000 10000 15000 20000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-7 0
200 400 600 800 1000 1200 1400 1600 1800 2000 0
5000 10000 15000 20000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
0 5000 10000 15000 20000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-8 250 270 290 310 330 350 370 390 410 430 0
5000 10000 15000 20000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 5000 10000 15000 20000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-9 Case 2 (SRV Opening + HPCI)
At time 0, reactor scram and SRV1 open System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS Core Uncover (hr)
Core Damage (hr) 2 No Yes Yes No AC/DC No No No No No Summary of Key Events Event Time (hr)
Reactor trip, SRV1 Open 0
Downcomer level first reaches L2 0.07 HPCI first started (CST injection mode) 0.08 HPCI pump isolation (low steam line pressure < 75 psig) 5.59 Downcomer level reaches L1 8.93 Downcomer level below TAF 8.93 LPCI first started 8.93 Gap release (1173 K)
Core damage (max temp > 2200F) 0 1
2 3
4 5
6 7
8 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-10 0
10 20 30 40 50 60 70 80 90 100 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Mass Flow Rate [kg/s]
SV->DW SRV1(ADS)
SRV2(ADS)
SRV3(ADS)
SRV4(ADS)
SRV5(ADS)
SRV6 SRV7 SRV8 SRV9 SRV10 SRV11 Only SRV1(ADS) Open 0
2 4
6 8
10 12 14 16 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-11 0
50 100 150 200 250 300 350 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Total Mass Flow Rate [kg/s]
100 200 300 400 500 600 700 800 900 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-12 0
200 400 600 800 1000 1200 1400 1600 1800 2000 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.5 1
1.5 2
2.5 3
0 5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-13 250 270 290 310 330 350 370 390 410 430 450 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-14 Case 3 (SRV Opening + CRD 2 at 10 min)
At time 0, reactor scram and SRV1 open. CRD pump 1 is available and injecting at time 0, and CRD pump 2 started at 10 min.
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS Core Uncover (hr)
Core Damage (hr) 3 No No Yes No AC/DC No No No No No Summary of Key Events Event Time (hr)
Reactor trip, SRV1 Open 0
Downcomer level first reaches L2 0.07 CRD Pump 2 started 0.17 Downcomer level reaches L1 0.32 Downcomer level below TAF 0.35 LPCI first started 0.59 Maximum cladding temperature = 786 K 0.78 0
1 2
3 4
5 6
7 8
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-15 0
10 20 30 40 50 60 70 80 90 100 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Mass Flow Rate [kg/s]
SV->DW SRV1(ADS)
SRV2(ADS)
SRV3(ADS)
SRV4(ADS)
SRV5(ADS)
SRV6 SRV7 SRV8 SRV9 SRV10 SRV11 Only SRV1(ADS) Open 0
2 4
6 8
10 12 14 16 18 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-16 0
2 4
6 8
10 12 14 16 18 20 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Total Mass Flow Rate [kg/s]
100 200 300 400 500 600 700 800 900 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-17 0
200 400 600 800 1000 1200 1400 1600 1800 2000 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-18 250 270 290 310 330 350 370 390 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-19 Case 4 (SRV Opening + CRD 2 at 20 min)
At time 0, reactor scram and SRV1 open. CRD pump 1 is available and injecting at time 0, and CRD pump 2 started at 20 min.
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS Core Uncover (hr)
Core Damage (hr) 4 No No Yes No AC/DC No No No No No Summary of Key Events Event Time (hr)
Reactor trip, SRV1 Open 0
Downcomer level first reaches L2 0.07 CRD Pump 2 started 0.33 Downcomer level reaches L1 0.32 Downcomer level below TAF 0.33 LPCI first started 0.58 Maximum cladding temperature = 830 K 0.76 0
1 2
3 4
5 6
7 8
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-20 0
10 20 30 40 50 60 70 80 90 100 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Mass Flow Rate [kg/s]
SV->DW SRV1(ADS)
SRV2(ADS)
SRV3(ADS)
SRV4(ADS)
SRV5(ADS)
SRV6 SRV7 SRV8 SRV9 SRV10 SRV11 Only SRV1(ADS) Open 0
2 4
6 8
10 12 14 16 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-21 0
2 4
6 8
10 12 14 16 18 20 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Total Mass Flow Rate [kg/s]
100 200 300 400 500 600 700 800 900 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-22 0
200 400 600 800 1000 1200 1400 1600 1800 2000 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-23 250 270 290 310 330 350 370 390 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-24 Case 4a (SRV Opening + CRD 2 at 20 min + No Rx Trip @ t=0)
At time 0, SRV1 opens. CRD pump 1 is available and injecting at time 0, and CRD pump 2 started at 20 min. Reactor is not tripped at t=0, rather it trips based on RPS signal (in this case, RPV Level 3 at 8 seconds).
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS Core Uncover (hr)
Core Damage (hr) 4a No No Yes No AC/DC No No No No No Summary of Key Events Event Time (hr)
SRV1 Open 0
Reactor trip (RPV water level reaches L3) 2.333E-3 Downcomer level first reaches L2 0.03 CRD Pump 2 started 0.33 Downcomer level reaches L1 0.24 Downcomer level below TAF 0.25 LPCI first started 0.53 Maximum cladding temperature = 941 K 0.67 0
1 2
3 4
5 6
7 8
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-25 0
10 20 30 40 50 60 70 80 90 100 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Mass Flow Rate [kg/s]
SV->DW SRV1(ADS)
SRV2(ADS)
SRV3(ADS)
SRV4(ADS)
SRV5(ADS)
SRV6 SRV7 SRV8 SRV9 SRV10 SRV11 Only SRV1(ADS) Open 0
2 4
6 8
10 12 14 16 18 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-26 0
2 4
6 8
10 12 14 16 18 20 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Total Mass Flow Rate [kg/s]
100 200 300 400 500 600 700 800 900 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-27 0
200 400 600 800 1000 1200 1400 1600 1800 2000 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-28 250 270 290 310 330 350 370 390 410 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-29 Case 5 (SRV Opening)
At time 0, reactor scram and SRV1 open. CRD unavailable.
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS Core Uncover (hr)
Core Damage (hr) 5 No No Yes No AC/DC No No No No No Summary of Key Events Event Time (hr)
Reactor trip, SRV1 Open 0
Downcomer level first reaches L2 0.07 Downcomer level reaches L1 0.26 Downcomer level below TAF 0.28 LPCI first started 0.57 Maximum cladding temperature = 1212 K 0.75 0
1 2
3 4
5 6
7 8
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-30 0
10 20 30 40 50 60 70 80 90 100 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Mass Flow Rate [kg/s]
SV->DW SRV1(ADS)
SRV2(ADS)
SRV3(ADS)
SRV4(ADS)
SRV5(ADS)
SRV6 SRV7 SRV8 SRV9 SRV10 SRV11 Only SRV1(ADS) Open 0
2 4
6 8
10 12 14 16 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-31 0
0.5 1
1.5 2
2.5 3
3.5 4
4.5 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Total Mass Flow Rate [kg/s]
100 200 300 400 500 600 700 800 900 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-32 0
200 400 600 800 1000 1200 1400 1600 1800 2000 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-33 250 270 290 310 330 350 370 390 0
500 1000 1500 2000 2500 3000 3500 4000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 500 1000 1500 2000 2500 3000 3500 4000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-34 Section 2: Station Blackout
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-35 Case 1 (STSBO)
System Availability, Boundary Conditions, and Core Damage Results RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr)
No No No No No No No No Yes1,2 0.5 1.17 1 SRV sticks open after 187 lifts (SOARCA model) 2 For this case, the SRV does not stick open until after core damage, so this assumption does not affect the outcome.
Summary of Key Events Event Time (hr)
Reactor trip, MSIV closure 0
Downcomer level reaches L2 0.16 Downcomer level reaches L1 0.50 Downcomer level below TAF 0.50 Gap release (1173 K) 1.02 Core damage (max temp > 2200F) 1.17 SRV sticks open due to high number of cycling 1.75 0
1 2
3 4
5 6
7 8
9 0
1000 2000 3000 4000 5000 6000 7000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-36 0
2 4
6 8
10 12 14 16 0
1000 2000 3000 4000 5000 6000 7000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 1000 2000 3000 4000 5000 6000 7000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-37 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 1000 2000 3000 4000 5000 6000 7000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 500 1000 1500 2000 2500 3000 0
1000 2000 3000 4000 5000 6000 7000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-38 0
0.5 1
1.5 2
2.5 3
3.5 4
4.5 5
0 1000 2000 3000 4000 5000 6000 7000 time [sec]
Containment Pressure [bar]
DW WW 250 270 290 310 330 350 370 390 410 0
1000 2000 3000 4000 5000 6000 7000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-39 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 1000 2000 3000 4000 5000 6000 7000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-40 Case 1a (SBO + Power Recovery at Core Damage)
System Availability, Boundary Conditions, and Core Damage Results RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr)
No No No No 1.17hr1 No No No No 0.5 No2 1 AC power recovery at 1.17 hr when maximum temperature reaches 2200 F 2 Power recovery quickly recovers water and reduces core temperature Summary of Key Events Event Time (hr)
Reactor trip, MSIV closure 0
Downcomer level reaches L2 0.16 Downcomer level reaches L1 0.50 Downcomer level below TAF 0.50 Gap release (1173 K) 1.02 Core damage (max temp > 2200F) 1.17 HPCI, RCIC, CRD Injection start 1.17 ADS actuated 1.24 Downcomer level recovers above TAF 1.27 0
1 2
3 4
5 6
7 8
9 0
1000 2000 3000 4000 5000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-41 0
2 4
6 8
10 12 14 16 18 0
1000 2000 3000 4000 5000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
50 100 150 200 250 300 350 0
1000 2000 3000 4000 5000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-42 0
200 400 600 800 1000 1200 0
1000 2000 3000 4000 5000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 200 400 600 800 1000 1200 1400 1600 0
1000 2000 3000 4000 5000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-43 0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
0 1000 2000 3000 4000 5000 time [sec]
Containment Pressure [bar]
DW WW 250 270 290 310 330 350 370 390 0
1000 2000 3000 4000 5000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-44 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 1000 2000 3000 4000 5000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-45 Case 2 (SBO + SRV Open at t=0)
System Availability, Boundary Conditions, and Core Damage Results RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr)
No No No No No No No No Yes1 0.27 0.79 1 SRV sticks open at time zero Summary of Key Events Event Time (hr)
Reactor trip, MSIV closure, SRV sticks open 0
Downcomer level reaches L2 0.16 Downcomer level reaches L1 0.27 Downcomer level below TAF 0.27 Gap release (1173 K) 0.69 Core damage (max temp > 2200F) 0.79 0
1 2
3 4
5 6
7 8
9 0
1000 2000 3000 4000 5000 6000 7000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-46 0
20 40 60 80 100 120 0
1000 2000 3000 4000 5000 6000 7000 time [sec]
Mass Flow Rate [kg/s]
SV->DW SRV1(ADS)
SRV2(ADS)
SRV3(ADS)
SRV4(ADS)
SRV5(ADS)
SRV6 SRV7 SRV8 SRV9 SRV10 SRV11 Only SRV1(ADS) Open 0
2 4
6 8
10 12 14 16 0
1000 2000 3000 4000 5000 6000 7000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-47 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 1000 2000 3000 4000 5000 6000 7000 time [sec]
Total Mass Flow Rate [kg/s]
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 1000 2000 3000 4000 5000 6000 7000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-48 0
500 1000 1500 2000 2500 3000 0
1000 2000 3000 4000 5000 6000 7000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.5 1
1.5 2
2.5 3
3.5 4
4.5 5
0 1000 2000 3000 4000 5000 6000 7000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-49 250 270 290 310 330 350 370 390 410 430 0
5000 10000 15000 20000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 1000 2000 3000 4000 5000 6000 7000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr) 3 Yes No No No DC No No No No 17.7 19.4
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 RCIC started (CST injection mode) 0.17 HCTL limit reached1 2.46 RCIC NPSH limit exceeded 11.57 RCIC injection end (CST level < 5 ft) 14.43 Downcomer level reaches L1 17.68 Downcomer level below TAF 17.68 Gap release (1173 K) 19.06 Core damage (max temp > 2200F) 19.42 Exhaust pressure exceeded (50 psig) 20.14 1 Depressurization due to HCTL limit requirements is not modeled for the purpose of this analysis Note: By the time RCIC injection stops from CST at 14.43 hr, the RCIC pump NPSH has already been exceeded at 11.57 hr.
0 1
2 3
4 5
6 7
8 9
0 10000 20000 30000 40000 50000 60000 70000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-51 0
2 4
6 8
10 12 14 16 18 0
10000 20000 30000 40000 50000 60000 70000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
5 10 15 20 25 30 35 40 0
10000 20000 30000 40000 50000 60000 70000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-52 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 10000 20000 30000 40000 50000 60000 70000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 500 1000 1500 2000 2500 3000 0
10000 20000 30000 40000 50000 60000 70000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-53 0
0.5 1
1.5 2
2.5 3
3.5 4
0 10000 20000 30000 40000 50000 60000 70000 time [sec]
Containment Pressure [bar]
DW(200)
DW(201)
DW(202)
DW(205)
DC(210)
WW(220) 250 270 290 310 330 350 370 390 410 430 450 0
10000 20000 30000 40000 50000 60000 70000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-54 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 10000 20000 30000 40000 50000 60000 70000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-55 Case 4 (SBO + RCIC + HCTL Depressurization)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr) 4 Yes No No No DC No No No No 5.61 7.17
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 RCIC started (CST injection mode) 0.17 HCTL limit reached (RPV depressurization start) 2.46 RCIC pump isolation (low steam line pressure < 75 psig) 3.90 Downcomer level reaches L1 5.61 Downcomer level below TAF 5.61 Gap release (1173 K) 6.99 Core damage (max temp > 2200F) 7.17 0
1 2
3 4
5 6
7 8
9 0
5000 10000 15000 20000 25000 30000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-56 0
20 40 60 80 100 120 0
5000 10000 15000 20000 25000 30000 time [sec]
HCTL Depressurization Flow Rate [kg/s]
0 2
4 6
8 10 12 14 16 18 0
5000 10000 15000 20000 25000 30000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-57 0
5 10 15 20 25 30 35 40 0
5000 10000 15000 20000 25000 30000 time [sec]
Total Mass Flow Rate [kg/s]
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 5000 10000 15000 20000 25000 30000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-58 0
500 1000 1500 2000 2500 3000 0
5000 10000 15000 20000 25000 30000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.5 1
1.5 2
2.5 3
3.5 4
4.5 0
5000 10000 15000 20000 25000 30000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-59 250 270 290 310 330 350 370 390 410 430 0
5000 10000 15000 20000 25000 30000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 5000 10000 15000 20000 25000 30000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-60 Case 5 (SBO + RCIC + 2 hr DC)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr) 5 Yes No No No DC No No No No 3.25 4.25
- 1. 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> DC power Summary of Key Events Event Time (hr)
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 RCIC started (CST injection mode) 0.17 DC power exhausted (RCIC fails) 2.00 HCTL limit reached1 2.46 Downcomer level reaches L1 3.25 Downcomer level below TAF 3.25 Gap release (1173 K) 4.04 Core damage (max temp > 2200F) 4.25 1 Depressurization due to HCTL limit requirements is not modeled for the purpose of this analysis 0
1 2
3 4
5 6
7 8
9 0
2000 4000 6000 8000 10000 12000 14000 16000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-61 0
2 4
6 8
10 12 14 16 18 0
2000 4000 6000 8000 10000 12000 14000 16000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
5 10 15 20 25 30 35 40 0
2000 4000 6000 8000 10000 12000 14000 16000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-62 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 2000 4000 6000 8000 10000 12000 14000 16000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 500 1000 1500 2000 2500 3000 0
2000 4000 6000 8000 10000 12000 14000 16000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-63 0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
0 2000 4000 6000 8000 10000 12000 14000 16000 time [sec]
Containment Pressure [bar]
DW WW 250 270 290 310 330 350 370 390 410 430 0
2000 4000 6000 8000 10000 12000 14000 16000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-64 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 2000 4000 6000 8000 10000 12000 14000 16000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-65 Case 6 (SBO + RCIC + SRV Stuck Open)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV Sticks Open?
Core Uncover (hr)
Core Damage (hr) 6 Yes No No No DC No No No Yes1 5.62 7.18
- 1. SRV sticks open based on high number (187) of cycles
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 RCIC started (CST injection mode) 0.17 SRV sticks open due to high cycling 2.47 RCIC pump isolation (low steam line pressure < 75 psig) 3.92 Downcomer level reaches L1 5.62 Downcomer level below TAF 5.62 Gap release (1173 K) 7.00 Core damage (max temp > 2200F) 7.18 0
1 2
3 4
5 6
7 8
9 0
5000 10000 15000 20000 25000 30000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-66 0
2 4
6 8
10 12 14 16 18 0
5000 10000 15000 20000 25000 30000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
5 10 15 20 25 30 35 40 0
5000 10000 15000 20000 25000 30000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-67 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 5000 10000 15000 20000 25000 30000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 500 1000 1500 2000 2500 3000 0
5000 10000 15000 20000 25000 30000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-68 0
0.5 1
1.5 2
2.5 3
3.5 4
0 5000 10000 15000 20000 25000 30000 time [sec]
Containment Pressure [bar]
DW WW 250 270 290 310 330 350 370 390 410 430 450 0
5000 10000 15000 20000 25000 30000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-69 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 5000 10000 15000 20000 25000 30000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr) 7 No Yes No No DC No No No No 17.53 19.31
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 HPCI started (CST injection mode) 0.17 HCTL limit reached 2.671 HPCI NPSH limit exceeded 12.07 HPCI injection end (CST level < 5 ft) 16.05 Downcomer level reaches L1 17.53 Downcomer level below TAF 17.53 Gap release (1173 K) 18.96 Core damage (max temp > 2200F) 19.31 Exhaust pressure exceeded (150 psig) 1 Depressurization due to HCTL limit requirements is not modeled for the purpose of this analysis Note: By the time HPCI injection stops from CST at 16.05 hr, the HPCI pump NPSH has already been exceeded at 12.07 hr.
0 1
2 3
4 5
6 7
8 9
0 10000 20000 30000 40000 50000 60000 70000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-71 0
2 4
6 8
10 12 14 16 18 0
10000 20000 30000 40000 50000 60000 70000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
50 100 150 200 250 300 350 0
10000 20000 30000 40000 50000 60000 70000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-72 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 10000 20000 30000 40000 50000 60000 70000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 200 400 600 800 1000 1200 1400 1600 1800 2000 0
10000 20000 30000 40000 50000 60000 70000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-73 0
0.5 1
1.5 2
2.5 3
3.5 4
0 10000 20000 30000 40000 50000 60000 70000 time [sec]
Containment Pressure [bar]
DW(200)
DW(201)
DW(202)
DW(205)
DC(210)
WW(220) 250 270 290 310 330 350 370 390 410 430 450 0
10000 20000 30000 40000 50000 60000 70000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-74 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 10000 20000 30000 40000 50000 60000 70000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-75 Case 8 (SBO + HPCI + HCTL Depressurization)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr) 8 No Yes No No DC No No No No 9.06 10.80
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 HPCI started (CST injection mode) 0.17 HCTL limit reached (RPV depressurization start) 2.67 HPCI pump isolation (low steam line pressure < 75 psig) 5.72 Downcomer level reaches L1 8.97 Downcomer level below TAF 9.06 Gap release (1173 K) 10.59 Core damage (max temp > 2200F) 10.80 0
1 2
3 4
5 6
7 8
9 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-76 0
20 40 60 80 100 120 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
HCTL Depressurization Flow Rate [kg/s]
0 2
4 6
8 10 12 14 16 18 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-77 0
50 100 150 200 250 300 350 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Total Mass Flow Rate [kg/s]
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II)
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-78 0
200 400 600 800 1000 1200 1400 1600 1800 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F 0
0.5 1
1.5 2
2.5 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Containment Pressure [bar]
DW WW
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-79 250 270 290 310 330 350 370 390 410 0
5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 5000 10000 15000 20000 25000 30000 35000 40000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-80 Case 9 (SBO + HPCI + 2hr DC)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr) 9 No Yes No No DC No No No No 3.82 4.85
- 1. DC power assumed available for 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> Summary of Key Events Event Time (hr)
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 HPCI started (CST injection mode) 0.17 DC power exhausted (HPCI fails) 2.00 HCTL limit reached1 2.67 Downcomer level reaches L1 3.82 Downcomer level below TAF 3.82 Gap release (1173 K) 4.63 Core damage (max temp > 2200F) 4.85 1 Depressurization due to HCTL limit requirements is not modeled for the purpose of this analysis 0
1 2
3 4
5 6
7 8
9 0
5000 10000 15000 20000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-81 0
2 4
6 8
10 12 14 16 18 0
5000 10000 15000 20000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
50 100 150 200 250 300 350 0
5000 10000 15000 20000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-82 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 5000 10000 15000 20000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 500 1000 1500 2000 2500 3000 0
5000 10000 15000 20000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-83 0
0.5 1
1.5 2
2.5 3
0 5000 10000 15000 20000 time [sec]
Containment Pressure [bar]
DW WW 250 270 290 310 330 350 370 390 410 430 0
5000 10000 15000 20000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-84 4
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5
0 5000 10000 15000 20000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-85 Case 10 (SBO + HPCI + SRV Stuck Open)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS SRV sticks open?
Core Uncover (hr)
Core Damage (hr) 10 No Yes No No DC No No No Yes1 8.94 10.68
- 1. SRV sticks open based on high number (187) of cycles
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 HPCI first started (CST injection mode) 0.17 SRV sticks open due to high cycling 2.53 HPCI pump isolation (low steam line pressure < 75 psig) 5.61 Downcomer level reaches L1 8.94 Downcomer level below TAF 8.94 Gap release (1173 K) 10.46 Core damage (max temp > 2200F) 10.68 0
1 2
3 4
5 6
7 8
9 0
5000 10000 15000 20000 25000 30000 35000 40000 45000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-86 0
2 4
6 8
10 12 14 16 18 0
5000 10000 15000 20000 25000 30000 35000 40000 45000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
50 100 150 200 250 300 350 0
5000 10000 15000 20000 25000 30000 35000 40000 45000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-87 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 5000 10000 15000 20000 25000 30000 35000 40000 45000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 500 1000 1500 2000 2500 3000 0
5000 10000 15000 20000 25000 30000 35000 40000 45000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-88 0
0.5 1
1.5 2
2.5 3
3.5 4
4.5 5
0 5000 10000 15000 20000 25000 30000 35000 40000 45000 time [sec]
Containment Pressure [bar]
DW WW 250 270 290 310 330 350 370 390 410 430 450 0
5000 10000 15000 20000 25000 30000 35000 40000 45000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-89 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 5000 10000 15000 20000 25000 30000 35000 40000 45000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-90 Section 3: Loss of Suppression Pool Cooling
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-91 Case 1 (Loss of SP Cooling + RCIC)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS Core Uncover (hr)
Core Damage (hr) 1 Yes No No No DC No No No 0.72 1.68
- 2. Initial suppression pool temperature of 95F
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 RCIC first started (CST injection mode) 0.17 ADS manual on high SP temperature 0.58 RCIC pump isolation (low steam line pressure < 75 psig) 0.84 Downcomer level reaches L1 0.71 Downcomer level below TAF 0.72 Gap release (1173 K) 1.56 Core damage (max temp > 2200F) 1.68 0
1 2
3 4
5 6
7 8
9 0
5000 10000 15000 20000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-92 0
2 4
6 8
10 12 14 16 0
5000 10000 15000 20000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
5 10 15 20 25 30 35 40 0
5000 10000 15000 20000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-93 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 5000 10000 15000 20000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 500 1000 1500 2000 2500 3000 0
5000 10000 15000 20000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-94 0
0.5 1
1.5 2
2.5 3
0 5000 10000 15000 20000 time [sec]
Containment Pressure [bar]
DW WW 250 270 290 310 330 350 370 390 410 430 0
5000 10000 15000 20000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-95 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 5000 10000 15000 20000 time [sec]
WW Water Level [m]
Swollen Collapsed
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-96 Case 2 (Loss of SP Cooling + HPCI)
System Availability, Boundary Conditions, and Core Damage Results Case RCIC HPCI LPCI LPCS AC/DC FW SPC ADS Core Uncover (hr)
Core Damage (hr) 2 No Yes No No DC No No No 1.84 3.52
- 2. Initial suppression pool temperature of 95F
Reactor trip, MSIV closure, pumps trip 0
Downcomer level first reaches L2 0.16 HPCI first started (CST injection mode) 0.17 ADS manual on high SP temperature 1.03 HPCI pump isolation (low steam line pressure < 75 psig) 1.16 Downcomer level reaches L1 1.74 Downcomer level below TAF 1.84 Gap release (1173 K) 3.39 Core damage (max temp > 2200F) 3.52 0
1 2
3 4
5 6
7 8
9 0
5000 10000 15000 20000 time [sec]
Reactor Pressure [MPa]
Dome DC
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-97 0
2 4
6 8
10 12 14 16 18 0
5000 10000 15000 20000 time [sec]
Reactor Water Level (m)
JP DC Core (R1)
BAF TAF 0
50 100 150 200 250 300 350 0
5000 10000 15000 20000 time [sec]
Total Mass Flow Rate [kg/s]
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-98 0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
0 5000 10000 15000 20000 time [sec]
Total Mass Flow Rate [kg/s]
LPCI(I)
LPCI(II)
SPC(I)
SPC(II) 0 500 1000 1500 2000 2500 3000 0
5000 10000 15000 20000 time [sec]
Maximum Core Temperature [K]
TFU TCL 2200F
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-99 0
0.5 1
1.5 2
2.5 0
5000 10000 15000 20000 time [sec]
Containment Pressure [bar]
DW(200)
DW(201)
DW(202)
DW(205)
DC(210)
WW(220) 250 270 290 310 330 350 370 390 410 0
5000 10000 15000 20000 time [sec]
Wetwell Temperature [K]
TLIQ TSAT TVAP
Appendix B: Peach Bottom Calculation Rev.8 (06/09)
B-100 4
4.2 4.4 4.6 4.8 5
5.2 5.4 5.6 5.8 6
0 5000 10000 15000 20000 time [sec]
WW Water Level [m]
Swollen Collapsed