ML20248C508
| ML20248C508 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 05/31/1998 |
| From: | Hetzel W, Watford G GENERAL ELECTRIC CO. |
| To: | |
| Shared Package | |
| ML20013J785 | List: |
| References | |
| 24A5416, 24A5416-R02, 24A5416-R2, NUDOCS 9806020170 | |
| Download: ML20248C508 (125) | |
Text
... _ _ _
O GENuclearEnergy 24A5416 Revision 2 Class I May 1998 Supplemental Reload Licensing Report for VERMONT YANKEE NUCLEAR POWER STATION Reload 19 Cycle 20 r
de Peinn
~
P PDR
1 l
)
J GE Nuclear Energy 24A5416 E
Revision 2 ClassI May 1998 i
24A5416, Rev. 2 l
Supplemental Reload Licensing Report l
for Vermont Yankee Nuclear Power Station Reload 19 Cycle 20 r
i l
l l-Approved 6
Approved [
U I
G.
. atford, Manager W. H. Hetzel '
Nuclear Fuel Engineering Fuel Project Manager 1
L
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Important Notice Regarding 1
l.
Contents of This Report
]
Please Read Carefully l
l This report was prepared by General Electric Company (GE) solely for Vermont Yankee Nuclear Power Corporation (VYNPC) for VYNPC's use with the U.S. Nuclear J
. Regulatory Commission (USNRC) to amend VYNPC's operating license for Vermont Yankee Nuclear Power Station. The information contcined in this report is believed by GE to be an accurate and true representation' of the facts known, obtained or provided to GE at the time this report was prepared.
The only undertakings of GE respecting information in this document are contained in I
the contract between VYNPC and GE for fuel bundle fabrication and services for Vermont L
Yankee Nuclear Power Station and nothing contained in this document shall be I
construed as changing said contract. The use of this information, except as defined by said contract, or for any purpose other than that for which it is intended, is not authorized; and with respect to any such unauthorized use, neither GE nor any of the contributors to this document makes any representation or warranty (expressed or implied) as to the completeness, accuracy or usefulness of the information contained in this document or that such use of such information may not infringe privately owned rights; nor do they assume any responsibility or liability or damage of any kind which may result from such use of such information.
l l
)
Page 2 I
i-l
' VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Acknowledgement The engineering and icload licensing analyses, which form the technical basis of this Supplemental Reload Licensing Report, were performed by G. M. Baka and D.P. Stier. Revision 2, of the Supplemental Reload Licensing Report was prepared by D. P. Stier. This document has been verified by D. B. Waltermire.
=
I l
1 l
l i
Page 3
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 The basis for this report is GeneralElectric Standard Applicationfor Reactor Fuel, NEDE-24011-P-A-13, August 1996; and the U.S. Supplement, NEDE-240ll-P-A-13-US; August 1996.
1.
Plant-unique Items Appendix A: Analysis Conditions Appendix B: Thermal Mechanical Compliance Appendix C: Loss of Main Generator Stator Cooling Appendix D: Exposure Dependent Limits Appendix E: Option I-D Stability Solution Exclusion Region Appendix F: Margin to Safety Valve Lift Appendix G: Pump Seizure in Single Loop Operation l
2.
Reload Fuel Bundles Cycle Fuel Type Loaded Number Irradiated:
GE9B-P8DWB335-10GL80M-150-T (GE8x8NB) 17 16 GE9B-P8DWB335-10GL80M-150-T (GE8x8NB) 18 88 GE9B-P8DWB335-11GL80M-150-T (GE8x8NB) 18 32 GE9B-P8DWB354-12GL80U-150-T (GE8x8NB)19-120 Nem GE13-P9HTB379-13GL10Ur-146-T (GE13) 20 40 GE13-P9HTB380-12GL10Ur-146-T (GE13) 20 72 Total 368 3.
Reference Cose Loading Pattern Nominal previous cycle core average exposure at end of cycle:
25473 mwd /MT (23109 mwd /ST)
Minimum previous cycle core average exposure at end of cycle 25143 mwd /MT from cold shutdown considerations-(22809 mwd /ST) l Assumed reload cycle core average exposure at beginning of 14966 mwd /MT cycle:
( 13577 mwd /ST)
L Assumed reload cycle core average exposure at end of cycle:
26761 mwd /MT (24277 mwd /ST)
Reference core loading pattem:
Figure 1 l
Page 4
VERMONTYANKEll 24A5416 Reload 19 Rev. 2 4.
Calculated Core Effective Multiplication and Contrel System Worth -No Voids,20*C Beginning of Cycle,kerreve Uncontmiled 1.102 Fully contmiled 0.%3 Stmngest contml md out 0.988 R, Maximum increase in cold core reactivity with exposure into cycle, Ak 0.000 5.
Standby Liquid Control System Shutdown Capability Bomn (ppin)
Shutdown Margin (Ak)
(at 20 C)
(at 20 C Xenon Flee) 800 0.063 6.
Reload Unique GETAB Anticipated Operational Occurrences (AOO) Analysis.
Initial Condition Parameters Exposure: BOC20 to EOC20 STANDARD-HBB-Peaking Factors Fuel Bundle Bundle Initial Design Iacal Radial Axial R-Factor Power Flow MCPR
( M W i)
(1000lb/hr)
GE13 1.45 1.60 1.17 1.020 6.733 96.8 1.33 GE8x8NB 1.20 1.73 1.40 1.000 7.306 100.9 1.18 Exposure: BOC20 to EOC20 ELLLA-HBB Pesking Factors Fuel Bundle Bundle Initial I
Dedgn I m al Radial Axial R-Factor Power Flow MCPR (MWt)
(1000lb/hr)
GE13 1.45 1.56 1.25 1.020 6.555 83.6 1.31
)
GE8x8NB 1.20 1.66 1.40 1.000 6.977 88.1 1.18 Exposure: BOC20 to EEOC20 ICF-HBB Peaking Factors Fuel Bundle Bundle Initial j
- Design Local Radial Axial R-Factor Power Flow MCPR i
l
( M W t)
(1000lb/hr)
GE13 1.45 1.59 1.19 1.020 6.715 105.0 1.36 GE8x8NB 1.20 1.74 1.40 -
1.000 7.330 108.9 1.20 Page 5
VERMONTYANKEE 24A5416 R* load 19 Rev. 2 1
Exposure: BOC20 to EOC20 STANDARD-H AL Peaking Factors Fuel Bundle Bund!e Initial Design Local Radial Axial R-Factor Power How MCPR (MWt)
(1000lb/hr)
GE13 1.45 1.62 1.46 1.020 6.842 95.4 1.34 GE8x8NB 1.20 1.76 1.40 1.000 7.406 100.3 1.16
~
j Exposure: BOC20 to EOC20 ELLLA-HAL Peaking Factors Fuel Bundle Buadle Initial Design Local Radial Axial R-Factor Power Flow MCPR
( M W t)
(1000lb/hr)
GE13 1.45 1.59 1.56 1.020 6.695 82.1 1.31 GE8x8NB 1.20 1.68 1.40 1.000 7.092 87.5 1.15 Exposure: BOC20 to EEOC20 ICF-HAL Peaking Factors Fuel Bundle Bundle Initial Design Local Radial Axial R-Factor Power How MCPR (MWt)
(1000lb/hr)
GE13 1.45 1.62 1.38 1.020 6.831 103.5 1.37 GE8x8NB 1.20 1.76 1.40 1.000 7.434 108.2 1.18 Exposure: BOC20 to EOC26-2205 mwd /MT (2000 mwd /ST) STANDARD Peaking Factors l
Fuel Bundle Bundle Initial l
Design IAcal Radial Axial R-Factor Power How MCPR j
(MWt)
(1000lb/hr)
GE13 1.45 1.65 1.44 1.020 6.930 94.4 1.32 GE8x8NB 1.20 1.76 1.40 1.000 7.427 100.2 1.15 l
l Exposure: BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD Peaking Factors Fuel Bundle Bundle Initial Design Local Radial Axial R-Factor Power Flow MCPR (MWt)
(1000lb/hr) i GE13 1.45 1.62 1.35 1.020 6.819 95.4 1.34 GE8x8NB 1.20 1.74 1.40 1.000 7.356 100.6 1.17 i
Page 6 1
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 7.
Selected Margin Improvement Options Recirculation pump trip:
No Rod withdrawallimiter:
No Thermalpowermonitor:
No i
Improved scram time:
No Measured scram time:
Yes Exposure dependentlimits:
Yes Exposure points analyzed:
3 l
8.
Operating Flexibility Options l
l Single-loop operation:
Yes
- Load line limit:
No Extended loadline limit:
Yes Maximum extended load linelimit:
No Increased core flow throughout cycle:
Yes (See Appendix D)
Flow point analyzed:
107.0 %
Increased core flow at EOC:
Yes Feedwater temperature reduction thmughout cycle:
No Final feedwater temperature reduction:
No ARTS Program:
No Maximum extended operating domain:
No Moisture separator seheater OOS:
No
^
lbrbine bypass system OOS:
No Safetyheliefvalves OOS: _
Yes (credit taken for 5 of 6 valves)
ADS OOS:
No EOC RPr OOS:
No Main steam isolation valves OOS:
No Page 7
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 9.
Core-wide AOO Analysis Results Methods used: GEMIN1; GEXI -PLUS Exposure range: BOC20 to EOC20 STANDARD-HBB Uncorrected ACPR Event Flux Q/A GE13 GE8x8NB Fig.
(%NBR)
(%NBR)
FW Controller Failure 222 115 0.20 0.10 2
hrbine Trip w/o Bypass 260 113 0.22 0.09 3
Load Reject w/o Bypass 270 110 0.22 0.06 4
Exposure range: BOC20 to EOC20 ELLLA-HBB Uncorrected ACPR Event Flux Q/A GE13 GE8x8NB Fig.
(%NBR)
(%NBR) i FW Contieller Failure 192 112 0.18 0.08 5
Turbine Trip w/o Bypass 236 110 0.20 0.06 6
Load Reject w/o Bypass 220 106 0.18 0.03 7
Exposure range: BOC20 to EEOC20 ICF-HBB Uncorrected ACPR Event Flux Q/A GE13 GE8x8NB Fi-(%NBR)
(%NBR)
FW Controller Failure 241 117 0.23 0.12 8
Turbine Trip w/o Bypast 280 115 0.23 0.11 9
Load Reject w/o Bypass 317 113 0.24 0.09 10 Exposure range: BOC20 to EOC20 STANDARD-HAL Uncorrected ACPR Event Flux Q/A GE13 GE8x8NB Fig.
(%NBR)
(%NBR)
FW Controller Failure 208 112 0.20 0.08 11 Turbine Trip w/o Bypass 263 111 0.23 0.07 12 Load Reject w/o Bypass 273 109 0.23 0.04 13 Page 8
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Exposure range: BOC20 to EOC20 ELLLA-HAL Uncorrected ACPR Event Flux Q/A GE13 GE8x8NB Fig.
(%NBR)
(%NBR)
FW Contmiler Failure 192 109 0.17 0.05 14 hrbine Trip w/o Bypass 250 108 0.19 0.04 15 lead Reject w/o Bypass 233 105 0.19 0.01 16 Exposure range: BOC20 to EEOC20 ICF-HAL Uncorrected ACPR Event Flux Q/A GE13 GE8x8NB Fig.
(%NBR)
(%NBR)
FW Controller Failure 220 114 0.22 0.10 17 Turbine Trip w/o Bypass 266 113 0.24 0.09 18 Load Reject w/o Bypass 294 111 0.26 0.07 19 Exposure range: BOC20 to EOC20-2205 mwd /MT (2000 mwd /ST) STANDARD Uncorrected ACPR Event Flux Q/A GE13 GE8x8NB Fig.
(%NBR)
(%NBR)
FW Controller Failure 197 112 0.19 0.08 20 Turbine Trip w/o Bypass 242 110 0.21 0.07 21 Load Reject w/o Bypass 258 108 0.21 0.04 22 Exposure range: BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD Uncorrected ACPR Event Flux Q/A GE13 GE8x8NB Fig.
(%NBR)
(%NBR)
FW Contmilcr Failure 215 113 0.20 0.09 23 hrbine Trip w/o Bypass 256 112 0.22 0.08 24 Imad Reject w/o Bypass 269 109 0.23 0.05 25 1
1 I
1 Page 9
VERMONTYANKEE 24A5416 R': load 19 Rev. 2
- 10. Local Rod Withdrawal Error (With Limiting Instrument Failure) AOO Summary Rod Block.
Rod Position ACPR Reading, %
(ft withdrawn)
GE13 GE8x8NB 104 3.5 0.15 0.15 105 3.5 0.15 0.15 106 4.0 0.18 0.18 107 4.0 0.18 0.18
'108 4.5 0.21 0.21 109 4.5 0.21 0.21 110 5.0 0.24 0.24 Setpoint selected: 109%. Limiting Rod Pattem: See Figure 26.
- 11. Cycle MCPR Values 1 In agreement with commitments to the NRC (lener from M. A. Smith to Document Control Desk,10CFR Part 21, Reportable Condition, Safety Limit MCPR Evaluation, May 24,1996) a cycle-specific Safety Limit MCPR calculation was perfonned and is reported in the Safety Limit shown below. The cycle-specific single loop operation Safety Limit was calculated to be 0.02 greater than the two loop Safety Limit MCPR as shown below. This cycle-specific SLMCPR was determined using the analysis basis documented in GESTAR with the following exceptions:
- 1. 'Ihe reference core loading (Figure 1) was analyzed.
- 2. The actual bundle parameters (e.g. local peaking) were used.
- 3. The full cycle exposure range was analyzed.
i Safety limit:
1.11 Single loop operation safety limit: 1.13 Non-pressurization events:
Exposure Range: BOC20 to EOC20 GE13 GE8x8NB Rod Withdrawal Error (for RBM Setpoints to 109%)
132 132 Loss of Feedwater Heating 1.22' l.22-Loss of Main Generator Stator Cooling 132 132 FeelInading Error (mislocated) 131 131 FuelImding Error (misonensed) 1.24 1.27
- 1. For single-loop operation. the h8CPR operating limit is 0.02 gmatar than the two-loop value.
i Page 10 L___----_-__--_----
VERMONTYANKEE
~24A5416 Reload 19 Rev. 2 Pressurization events:
Exposure range: BOC20 to EOC20 STANDARD-HBB i
Exposure point: EOC20
)
Option A Measured Scram Time GE13 GE8X8NB GE13 GE8x8NB FW Contmiler Failure 1.44 1.33 1.34 1.23 Turbine Trip w/o Bypass 1.46 1.32 1.36 1.22 Load Reject w/o Bypass 1.46 1.30 1.36 1.20 Exposure range: BOC20 to EOC20 ELLLA-HBB Exposure point: EOC20 Option A Measured Scram Time GE13 GE8X8NB GE13 GE8x8NB FW Controller Failure 1.42 1.31 1.32 1.21
'Ibrbine Trip w/o Bypass 1.43 1.29 1.33 1.19 Load Reject w/o Bypass 1.42 1.26 1.32 1.16 Exposure range: BOC20 to EEOC20 ICF-HBB Exposure point: EOC20 Option A Measured Scram Time GE13 GE8X8NB GE13 GE8x8NB FW Contmiler Failure 1.47 1.36 1.37 1.26 Turbine Trip w/o Bypass 1.47 1.35 1.37 1.25 Load Reject w/o Bypass 1.40 1.32-1.38 1.22 Exposure range: BOC20 to EOC20 STANDARD-HAL Exposure point: EOC20 Option A Measured Scram Time GE13 GE8X8NB GE13 GE8x8NB FW ControllerFailure 1.44 1.31 1.34 1.21
'Ibrbine Trip w/o Bypass 1.46 1.30 1.36 1.20 Load Reject w/o Bypass 1.47 1.28 1.37 1.18 Page 11
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 l
Exposure range: BOC20 to EOC20 ELLLA-HAL l
Exposure point: EOC20 l
Option A Measured Scram Time GE13 GE8X8NB GE13 GE8x8NB FW ContmilerFailure 1.41 1.29 1.31 1.19 habine' Dip w/o Bypass 1.43 1.27 1.33 1.17 Load Reject w/o Bypass 1.43 1.25 1.33 1.15 Exposure range: BOC20 to EEOC20 ICF-HAL Exposure point: EOC20 Option A Measured Scram Time GE13 GE8X8NB GE13 GE8x8NB FW Controller Failure 1.46 1.33 1.36 1.23 hrbine Trip w/o Bypass 1.48 1.32 1.38 1.22 Load Reject w/o Bypass 1.50 1.30 1.40 1.20 Exposure range: BOC20 to EOC26-2205 mwd /MT (2000 mwd /ST) STANDARD Exposure point: EOC20-2205 mwd /MT (2000 mwd /ST)
Option A l MeasuredScramTime GE13 GFe
$O GE8x8NB 1
FW Controller Failure 1.35 i
31 1.24
~
hrbine' Dip w/o Bypass 1.37 1.33 1.21
~ ~
Load Reject w/o Bypes 1.37 1.33 1.18 Exposure range: BOC20 to EOC26-1102 mwd /MT (1000 h.
~ oTANDARD Exposure point: EOC20-1102 mwd /MT (1000 mwd /ST)
~
Option A Measured Scram Time GE13 GE861B GE13 GE8x8NB FW Contmiler Failure 1.36 1.26 1.32 1.25 hrbine Trip w/o Bypass 1.38 1.28 1.34 1.22 Load Reject w/o Bypass 1.38 1.26 1.34 1.20
- 12. Overpressurization Analysis Sumrnary Psi Pv Plant Event (psig)
(psig)
Response
i MSIV Closure (Flux Scrarn) 1278 1301 Figure 27 Page 12
f VERMONTYANKEE 24A5416 Reload 19 Rev. 2
- 13. Leading Error Results 2
Variable water gap disoriented bundle analysis: Yes l
Disoriented Fuel Bundle ACPR j
GE9B-P8DWB354-12GL800-150-T (GE8x8NB) 0.16 i
GE13-P9HTB380-12GL10(TT-146-T (GE13) 0.12 gel 3-P9HTB379-13GL10(TT-146-T (GE13) 0.13 Mislocated Fuel Bundle 0.20
- 14. Control Rod Drop Analysis Results This is a banked position withdrawal sequence plant, therefore, the control md dmp accident analysis is not required. NRC appmval is documented in NEDE-240ll-P-A-US.
- 15. Stability Analysis Results
'Ihe Vermont Yankee Nuclear Power Station has implemented the Option I-D solution, documented in the reference AppNeation of the " Regional Exclusion win Flow-Biased APRM Neutron Fkx Scram" SenNNty Sektion (Opelon I-D) se the Vermont Yankee Nuclear Power Plant, Licensing 1kpicalReport, GENE-637-018-0793, July 1993. 'Ihe Exclusion Region is re-evaluated on a cycle specific basis; Appendix E contains details of the Cycle 20 results. 'Ihe Exclusion Region analysis also confirms that core-wide reactor instability is the predominant mode and regional mode oscillations are not expected to occur for Vermont Yankee. 'Ihe pmtection of the Safety Limit MCPR afforded by the flow-biased Average Power Range Monitor (APRM) neutmn flux trip is demonstrated for the prefened core-wide mode of coupled thennal-hydraulic /neutmnic oscillations for Vennont Yankee.
- 16. L--- d Coolant Accident Results LOCA method used: SAFERKiESTR-LOCA See Vernaont Yankee NuclearPowerStation SAFERIGESTR-LOCA Loss-of-Coolant AccidentAnalysis, NEDC-32814P, March 1998.
'Ihe most and the Icast limiting MAPLHOR's for the new GE13 fuel designs are as follows:
i
- 2. Includes a 0.5 penalty due to variable waner gap R-factor uncensinty.
I Page 13 i
VERMONTYANKEE 24A5416 Reload 19 Rev. 2
- 16. Lop-of-Coolant Accident Results (cont)
Bundle Type: GE13-P9HTB380-12GZ-10(TF-146-T Average Planar Exposure MAPLHGR(kW/ft)
(GWd/ST)
(GWd/MT)
Most Limiting Least Limiting 0.00 0.00 10.64 11.05 0.20 0.22 10.71 11.11 1.00 1.10 10.85 11.23 2.00 2.20 11.04 11.41 3.00 3.31 11.23 11.59 4.00 4.41 11.43 11.78 5.00 5.51 11.64 11.%
6.00 6.61 11.82 12.18 7.00 7.72 11.96 12.43 8.00 8.82 12.12 12.63 9.00 9.92 12.27 12.78 10.00 11.02 12.44 12.92-12.50 13.78 12.57 12.60 15.00 16.53 12.24 12.38 17.50 19.29 11.90 12.01 20.00 22.05 11.54 11.64 25.00 27.56 10.82 10.95 30.00 33.07 10.12 10.31 35.00 38.58 9.43 9.61 40.00 44.09 8.76 8.94 45.00 49.60 8.10 8.30 50.00 55.12 7.44 7.66 55.00 60.63 6.77 7.01 l
57.48 63.36 6.43 6.68 57.58 63.47 6.67
)
58.16 64.11 6.59 i
l l
l Page 14 i
VERMONTYANKEE 24A5416 Reload 19 Rev. 2
- 16. Loss-of-Coolant Accident Results (cont)
Bundic Type: GE13-P9HTB379-13GZ-10CTF-146-T Average Planar Exposure MAPLHGR(kW/ft)
(GWd/ST)
(GWd/MT)
Most Limiting Least Limiting 0.00 0.00 10.64 11.00 0.20 0.22 10.69 11.04 1.00 1.10 10.81 11.14 2.00 2.20 10.99 11.25 3.00 3.31 11.18 11.43 4.00 4.41 11.36 11.65 5.00 5.51 11.49 11.82 6.00 6.61 11.63 11.96 l
7.00 7.72 11.78 12.11 8.00 8.82 11.92 12.25 9.00 9.92 12.07 12.41 10.00 11.02 12.22 12.57 l
12.50 13.78 12.33 12.62 15.00 16.53 12.23 12.39 17.50 19.29 11.90 12.02 20.00 22.05 11.54 11.66 25.00 27.56 10.82 10.%
30.00 33.07 10.h 10.30 35.00 38.58 9.42 9.59 40.00 44.09 8.75 8.92 45.00 49.60 8.09 8.28 50.00 55.12 7.43 7.64 55.00 60.63 6.76 6.99 57.50 63.39 6.41 6.65 57.56 63.45 6.65 57.90 63.82 6.60 l
l Page 15
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 l
sHMMs sMMMMMMEs MMMMMMMMM ll eMMMMMMMMMs
- M M M M M M M M M M M
- MMMMMMMMMMM
- M M M M M M M M M M M
- MMMMMMMMM MMMMMMMMM
- MMMMMMM*
- MEM i
l I
I I
l-1 5 5 7 9 11 15 15 17 19 21 25 25 21 29 51 55 55 57 59 91 45 Fuel Type
- A=GE9B-P8DWB335-10GL80M-150-T (Cycle 17) D=GE9B-P8DWB354-12GL80U-150-T (Cycle 19)
B=GE9B-P8DWB335-10GL80M-150-T (Cycle 18) E=GE13-P9HTB380-12GL10(TT-146-T (Cycle 20)
C=GE9B-P8DWB335-11GL80M-150-T (Cycle 18) F=GE13-P9HTB379-13GL10(TT-146-T (Cycle 20)
Figure 1 Reference Core Loading Pattern i
Page 16
VERMONTYANKEE 24AS416 Reload 19 j
Rev. 2 i
l i
i i
l Neutron Flux
- - - - - - Ave Surface Heat Flux
Core inlet Flow 150 0 - --- Core inlet Subcooling
\\
.J
\\
\\
', ~....._______ _
l
_ _ c, m m _ __ _ __ _ r_ r - _ _ _ _ _ _ _ _ _ _ _ _ 'd' --{- -
ion.o T
a ct 50.0 I
0.0 0.0 20.0 40.0 Time (sec)
I i
Figure 2a Plant Response to FW Controller Failure (BOC20 to EOC20 STANDARD-HBB) l t
\\
l Page 17 l
l t
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 VesselPress Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 125.0 - --- Bypass Valve Flow s
N.
\\
f
\\
75 0 t
i x
N f
l i
\\
l 25.0
].___ _
-25.0 '
O.0 20.0 40.0 Time (sec)
Figure 2b Plant Response to FW Controller Failure (BOC20 to EOC20 STANDARD-IIBB)
Page 18
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Void Reactivity
- - - - - - Doppler Reactivity
Scram Reactivity 1.0 - --- Total Reactivity
?
m E
l 0.0
---v----1.-..i....=...=.-.-~.;-....
,l E
l' Oo 1'
b g
\\
E 1.
U i
I E
-1.0 I.
i l
I.
l I.
I-I:
I I
l
-2.0 0.0 20.0 40.0 Time (sec)
Figure 2c Plant Response to FW Controller Failure (BOC20 to EOC20 STANDARD-HBB)
Page 19
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 150.0 - --- Feedwater Flow
-- m{l;..,
i0oo _. - -
3 ll.'
Tu l'
E 1:.'
I:.,'
- l..
T, '
l:',l
soo _
lll \\
I.,
a l' a
\\
lll
\\
lll l!! \\
- i..
lll
\\
l'.
I l-I.
0.0 O.0 20.0 40.0 Time (sec)
Figure 2d Plant Response to FW Controller Failure (BOC20 to EOC20 STANDARD-HBB)
Page 20
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 I
,4eutron Flux
<--Ave Surface Heat Flux
-- Core inlet Flow 150.0
' / '"N-s
/
\\ / A'
,'\\/ '*
100.0 E
s s
g
{
's tr s's e
s s s~
~s~~
50.0 N~~.
0.0 -
O.0 3.0 60 Time (sec)
Figure 3a Plant Response to 'Ibrbine ' hip w/o Bypass (BOC20 to EOC20 STANDARD-HBB)
Page 21
VERMONTYANKEE 24A5416 Reload 19 Rev. 2
/
Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 300.0 - --- Bypass Valve Flow 200.0 lii E
w
~
100.0 I'
/
/
f 0.0 0.0 3.0 6.0 Time (sec)
Figure 3b Plant Response tolbrbine Trip w/o Bypass (BOC20 to EOC20 STANDARD-IIBB)
Page 22
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 Void Re ivity ppler eactivity ram eactivity 1.0 T al eactivity
[')'
~
q
\\
a l
c I
E t
0.0 g.
(..'\\
E
\\
'2-O
\\
\\
O N
)
.D
\\
.E 1 \\
ti
\\ \\
\\
i
\\,c.i e
i
- 1.0 -
\\
,4
\\
\\
(
\\
t l\\
\\
l\\
- 2.0 O.0 3.0 6.0 Time (sec)
Figure 3c Plant Response to'Ibrbine Trip w/o Bypass (BOC20 to EOC20 STANDARD-HBB)
Page 23
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 1
Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow NO - --- Feedwater Flow 100.0 g.
I I
\\.
N., ~.
l W:
. ' ;- ~.,-
l
~.
i 1l_ ' _ _ '._ _ _,-._;_l _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _
0.0 I
-100.0 0.0 3.0 6.0 Time (sec)
Figure 3d Plant Response tolbrbine Trip w/o Bypass (BOC20 to EOC20 STANDARD-HBB)
Page 24
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 i
l Noutron Flux Ave Surface Heat Flux
- Ccre inlet Flow 150.0 l
.N }ff"'-'%
~%
/N
\\
100.0 N
j N
(U N
Q~
s y
N s
N
%s 50.0 0.0
=
O.0 3.0 6.0 Time (sec)
O Figure da Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 STANDARD-HBB)
Page 25
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 i
l Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 300.0 - --- Bypass Valve Flow 200.0 3a T
f
~
100.0 -
/
/
/
0.0 I
O.0 3.0 6.0 Time (sec)
Figure 4b Plant Response to Load Reject w/o Dyp.ess (BOC20 to EOC20 STANDARD-IIBB)
Page 26
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 4
i Re ivity
- - - - - - Do, 'le Reactivity Scra eactivity 1.0 Total Reactivity
{\\
~~**'
12 t
1
\\
g
(
\\,.f.
\\
c 0.0 R
t N.
\\
g O
s l
u y
- E
's U
1 m
y IE
\\
h
~'0 -
\\
h A,j,
\\
\\
\\
\\,
\\\\
l
\\
\\
\\
l I
-2.0 O.0 3.0 6.0 Time (sec)
Figure 4c Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 STANDARD-HBB)
Page 27
l VERMONTYANKEE 24A5416 l
Reload 19 Rev. 2 I
Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow 100.0 r, g ' %
\\ '.
lii i
'N cc
\\
N s. %,
g l
- - - ~ ~ _.
\\,
\\
l 6
I i
0.0 w--*----s---------------------,----.
I l
s...-
l I
_ 100,0 i
0.0 3.0 6.0 l
Time (sec)
C l
l l
Figure 4d Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 STANDARD-HBB) i Page 28
1 VERMONTYANKEE 24A5416 Reload 19 Rev. 2 l
Neutron Flux
- - - - - - Ave Surface Heat Flux
Core inlet Flow l/\\
150 0 - --- Core inlet Subcooling
\\
~
\\
\\
3
>S __ _L-I lii
________________________________P, g
~
\\
's 00.0 f
I 0.0 O.0 20.0 40.0 Time (sec)
Figure 5a Plant Response to FW Controller Failum (BOC20 to EOC20 ELLLA-HB8) l l
l Page 29 l
VERMONTYANKEE 24A5416 F_ebad 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 125.0 - --- Bypass Valve Flow
.N
~
l
'\\
i 75.0 3
h.
\\
l{
\\
as.O
\\'
I'
-as.O O.0 20.0 40.0 Time (sec)
Figure 5b Plant Response to FW Controller Failure (BOC20 to EOC20 EL,LLA-HBB)
Page 30 l
I VERMONT YANKEE 24A5416 i
Reload 19 Rev. 2 Void ReactMty I
- - - - - - Doppler Reactivity
[
Scram Reactivity 1.0 - --- Total Reactivity k
i i
e
,e d
0 0
v
.e I '
c C
0.0
., s,., f.- -
.,,5 7,7 -
,7,
,, 7,- - 7, E
O 1
O I
i n
i i'
i CC l
l
- 1.0 1,
l 1
j i
I, 1
l 1.
i.
.0 0.0 20.0 40.0 Time (sec) l l
I Figure Sc Plant Response to FW Contmiler Failure (BOC20 to EOC20 ELLLA-HBB)
L 4
]
l Page 31 l
VERMONTYANKEE 24AS416 Reload 19 Rev. 2 l
l
)
Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 150 0
--- Feedwater Flow
\\
,:k:,l: ' ~.
2,..,
iii i.
cc l!, l.
I P.,
- l...
so.o l! k
- f. :
- l..
t lll
\\
p!! \\
l.
~
- i..
lll
\\
1 b
8 o.o 0.0 20.0 40.0 Time (sec) l l
i 1
Figure 5d Plant Response to FW Controller Failure (BOC20 to EOC20 ELLLA-HBB) l Page 32 l
_a
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Ideutron Flux
--Ave Surface Heat Flux
Gore inlet Flow 150.0 100.0
.M
-h%
f '/*v%., s s y
\\
r q's s g
v s s s'~
~, -. -
50.0
)
0.0 O.0 3.0 6.0 j
Time (sec) 1 ll Figure 6a Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EOC20 ELLLA-HBB) l l
i l
Page 33 w__-__-__________
VERMONTYANKEE 24AS416 Reload 19 Rev. 2 i
I l
Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow
- 0
- --- Bypass Valve Flow l
200.0 3
1sW m
~
l 100.0
)
l J/
/
I 0.0 O.0 3.0 6.0 l
Time (sec)
]
Figure 6b Plant Response to hrbine Trip w/o Bypass (BOC20 to EOC20 ELLLA-HBB) l-Page 34
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vold Re ivity ppler eactivity e ram eactivity 1.0 To eactivity
,1 r
,,g l
n
\\
m y
i e
j C
O.0 t..
8.
V N
E
\\
O N
O s
y N
5 s
b
(
a c
\\
\\
W
\\
)
- 1.0
\\
N'h
\\
\\
- h 1
a
\\
\\
\\
l 1
i
\\
-2.0 I
O.0 3.0 6.0 Time (sec)
Figure 6c Plant Response to 'Ihrbine Trip w/o Bypass (BOC20 to EOC20 ELLLA-HBB)
Page 35
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessol Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow 100.0 7.
l y
I '.
%,N e
l N ; r. ~....
W
w*
l
~~-
I l
O0 3- --f---------------------------------
-100.0 O.0 3.0 6.0 Emo (sec)
Figure 6d Plant Response to 'Ibrbine 'IYip w/o Bypass (BOC20 to EOC20 ELLLA-IIBB)
Page 36
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 i
NE utron Flux Av) Surface Heat Flux
---j Co o inlet Flow 100.0
. '). p's' v.
3
>T-~s-s s.,
y
/
at N s g
s
~.
's s's,~
~, ~ ~ ~,
~~,~
s0.0 0.0 O.0 3.0 6.0 ime (sec)
Figure 7a Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 ELLLA-HBB)
Page 37
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 300.0 - --- Bypass Valve Flow 200.0 a
tc
~
~
100.0 i
1 s
//
i 0.0 O.0 3.0 6.0 Time (sec) 0 l.
Figure 7b Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 ELLLA-HBB)
Page 38 1
p pNTYANKEE 24A5416
]R Rev. 2 Re ivity Reactivity
Scram Reactivity 10 Total Reactivity
,1 g
j I
\\
u,
\\
.y E
...'., \\
o.o -
\\
e i
o
/
1 i
O
\\
g f-
\\
8
\\
g s
e
\\
E
\\
I
-1.0 g
i
\\
)A i
\\
\\
\\
U.
i
\\
\\
\\
\\
\\
i
-2.0 0.0 3.o 6.o l
Time (sec)
Figure 7c Mant Response to Load Reject w/o Bypass (BOC20 to EOC20 ELLLA-HBB) l l-i t
Page 39
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow 100.0 v.
g 3
\\ '.
16 1
%'N i
0-
\\
' s m.
~
t
..~,
. e '.
<x'
........,~....
\\
1
\\.
0.0 j
l l
s
-100.0 O.0 ~
3.0 6.0 Time (sec) i i
l Figure 7d Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 ELLLA-HBB) 1 Page 40 E _--- - - _ - -. - - - - -
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 l
t
}
Neutron Flux
- - - - - - Ave Surface Heat Flux
Core Inlet Flow 150.0 - --- Core inlet Subcooling
\\
j.f f-_.
,-..:---m l
- ' '; w -- _.
--'~~~~~~-~---
1
,oo.n e_
l
}
3 E
8
'. \\
50.0 I
0.0 O.0 20.0 40.0 Time (sec)
[
Figure 8a Plant Response to FW Controller Failure (BOC20 to EEOC20 ICF-HBB) l l
l Page 41 1
1
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 125.0 - --- Bypass Valve Flow
,\\
l
\\
75.0 E
I 25.0 I
a-I I
25.0 0.0 20.0 40.0 Time (sec) l I
j Figure 8b Plant Response to FW Controller Failure (BOC20 to EEOC20 ICF-HBB)
Page 42 l
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Void Reactivity
- - - - - - Doppler Reactivity
Scram Reactivity I
1.0 - --- Total Reactivity i
1 u>
y
'[
o.o m.m -
,w.x,v.--
,,-,,,w,r,-,n,, -,-,-
E I 'e, '
Oo
\\
k l.
i G"
-i.o I
l b
I I
~
l I
r i
II I
E I
-2.0 0.0 20.0 40.0 Time (sec) i i
L Figure 8c Plant Response to FW Controller Failure (BOC20 to EEOC20 ICF-HBB)
Page 43 I
IL__.._._._...__
l VERMONTYANKEE 24A5416 l
Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow
. 150 0 - --- Feedwater Flow l
100.0 e.
l'.
y l',.
i-a l{ :':l l
a-4:.
l'.,\\
i l!!
50.0 ll lil \\
l:'
l.:
\\
1:-
\\
l':
\\
I..
-5 I \\
l 0.0 0.0 20.0 40.0 Time (sec)
Figure 8d Plant Response to FW Controller Failure (BOC20 to EEOC20 ICF-HBB) l I
Page 44 l
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 9eutron Flux
--Ave Surface Heat Flux
-Core inlet Flow 150.0
/ \\
~
/
.\\',Pf '%s
/, u -
y
's N
100.0 N
]
Ns a
s E
s's
~.
's'~~.,
's s
~ ~ ~.
50.0 -
0.0 O.0 3.0 6.0 Time (sec)
O Figure 9a Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EEOC20 ICF-IIBB)
Page 45
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relef Valve Flow 300.0 - --- Bypass Valve Flow 200.0 3
1s cc
~
~
100.0
/'
/
I 0.0 O.0 3.0 6.0 Time (sec) i l
)
Figure 9b Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EEOC20 ICF-HBB)
Page 46 E --
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Void Redfvity r eactivity ram eactivity 1.0 tal activity f\\
~~
~~
w f
\\
,.... ~*....
l 8
8.
(. L.
c 0.0 t
'\\
E
\\
-a...-----
{
O N
k
.y
\\i i
\\
11
's
\\.
.J 1
E
\\ T.J
'i
- 1.0
\\
\\
\\
l l
I
\\
\\
l l
l l
1
\\
\\
\\
l
\\
\\
I
-2.0 O.0 3.0 6.0 1
Time (sec) i l
Figure 9c Plant Response to Thrbine ' hip w/o Bypass (BOC20 to EEOC20 ICF-HBB) l 1
Page 47 1
L- -
[
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 1
I 1
1 Level (irch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow 100.0 g.
A 1
N l '.
'N, g
I g
g s..
-~~ ~
a'%,'.'.,-
- N','
~....
~-
l w.
l i
o.o 3-'.--.l----<-.'.---------------------------
',s..,.
1 l
-100.0 O.o 3.0 6.0 Time (sec)
Figure 9d Piant Response to'Ibrbine Trip w/o Bypass (BOC20 to EEOC20 ICF-HBB) l l
l i
i Page 48
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Noutron Flux
- Ane Surface Heat Flux
- Core inlet Flow 150.0
/ s_
y " '..
\\'/
N
-J l
~,
s
~
/
N 100.0
]
N N
N N
E s
h s, s s s s'~~s
~~.
50.0 0.0 0.0 3.0 6.0 Time (sec) i l
Figure los Plant Response to Load Reject w/o Bypass (BOC20 to EEOC20 ICF-HBB) t Page 49
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 VesselPress Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow N
- --- Bypass Valve Flow 200.0 3
is cr Y
~
100.0'-
/
/
/
0.0 O.0 3.0 6.0 Time (sec)
Figure 10b Plant Response to Load Reject w/o Bypass (BOC20 to EEOC20 ICF-HBB)
Page 50 e---___
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 id Re ivity r eactivity
--- Scr eactivity 10 Total eactivity
- t.
I
~*,,. -
o
\\
I C
e
/.
C 0.0 t
8.
'\\
g
.g.
s\\
o s
1
\\ '\\
.Wvb s
z i
- 1.0 g
\\
\\
I
\\
\\
1
\\
\\
\\
I
-2.0 O.0 3.0 6.0 Time (sec)
)
l l
Figure 10c Plant Response to Load Reject w/o Bype (BOC20 to EEOC20 ICF-HBB)
I t
l l
Page 51 l
E______
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow l
l l
l t
100.0 y
\\
N D
15
\\
'N Z
\\
l g
\\
9l
.,.'-m:
7.:~.
W:
\\,
.~
\\
l v'
i e
e
\\ ',
l o.o l
l l
~
1 I
-100.0 l
0.0 3.o 6.0 Time (sec) i l
Figure 10d Plant Response to Load Reject w/o Bypast (BOC20 to EEOC20 ICF-HBB) l l
l 1
i Page 52 l
l
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Neutron Flux
- - - - - - Ave Surface Heat Flur
Core inlet Flow 150 0 - --- Core inlet Subcooling
\\:\\
\\
J i
\\
__._____.T.,..........._-________s fy-~~
300.0 m_
=
E E
{
E e
\\.
50.0 I
l 0.0 0.0 20.0 40.0 l
Time (sec) 4 l
Figure lia Plant Response to FW Controller Failure (BOC20 to EOC20 STANDARD-HAL) i Page 53 i
t j
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - Safety Valve Flow
Relief Valve Flow 125.0 - --- Bypass Valve Flow l
l
~
N I
l 1
\\
75.0 a
3 k
i a
s x
N
\\
l 25.0 l
I I
I
. 25.0
=
0.0 20.0 40.0 I
Eme (sec) i Figure lib Plant Response to FW Controller Failure (BOC20 to EOC20 STANDARD-HAL)
Page 54
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 1
1 Void Reactivity j
- - - - - - Doppler Reactivity
Scram Reactivity 10 - --- Total Reactivity g
=
g I
l
,e v
S l
C c
o.0
- _ _ _., _. m,, f,
, f;y--,9 - -,2
,,= -- - 7,,,--
8.
E l,, ',
O j'
O
.D I.
I
.h
\\
15
\\'
me i
E I
- 1.0 1,
i 1
1.
~
I l
t I
I I
i 1:
i
{
_zo o.o no 40.0 1
1 1
Time (sec) l I
l Figure 11c Plant Response to FW Controller Failure (BOC20 to EOC20 l
STANDARD-HAL)
Page 55 i
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 1.evel(inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 150.0 - --- Feedwater Flow 7' i,*,
100.0
" " " ~ ~ ~
j l' ( e a
i:
G" ll I:
_ l' e,'
I. '
l'...
i 50.0
!!! \\
lll e
lll {
l' e lll \\
F.
lll
- i.,
I I
I' 0.0 O.0 20.0 40.0 Time (sec)
Figure lid Plant Response to FW Controller Failure (BOC20 to EOC20 STANDARD-HAI,)
)
i l
Page 56 L
w_____-__--__________
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 fleutron Flux Ave Surface Heat Flux
--( ore Inlet Flow 150.0 j sf \\e' './" % "' \\, m 100.0
,'\\
g M
's.
N 3
g s a-
~.
's s s oE N
s%s
' ~.,
%s
~~~,,
50.0 0.0 l
l 0.0 3.0 '
6.0 l*
Time (sec) l Figure 12a Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EOC20 STANDARD-HAL)
Page 57
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 300 0 - --- Bypass Valve Flow 200.0 3a cc
^-
g
~
~
100.0 s
/
/
0.0 O.0 3.0 6.0 Time (sec) i Figure 12b Plant Response to Wrbine Trip w/o Bypass (BOC20 to EOC20 STANDARD-HAL) l Page 58 l
h.
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 old Re ctivity pple Reactivity Reactivity 10 Total Reactivity
.f\\
~
)
g l
e mE e
C 0.0 g_
A....----.
E O
i o
\\
g b
\\s\\
- s U
\\
\\
\\
\\,
b).A cc
\\
- 1.0
\\
\\
\\
\\
\\
l
\\
\\
l I
l
-10 O.0 3.0 6.0 Time (sec) l l
Figure 12c Plant Response to 'Ibrbine TYip w/o Bypass (BOC20 to EOC20 f
STANDARD-HAL) l Page 59
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow i00.0 g-3-
1 5
I '.
N ct
>o l ',
N. m. ~.....
. h;
~,
~....
... ~.... - -
1 3-.
0.0 1
I
- 100.0 0.0 3.0 6.0 Eme (sec)
Figure 12d Plant Response to 'Ibrbine 'IYip w/o Bypass (BOC20 to EOC20 STANDARD-HAL) l l
l Page 60 l
I VERMONTYANKEE 24A5416 Re. load 19 Rev. 2 l
t l
l l
l l
l l
NeJtron Flux
- Avo Surface Heat Flux l
Coce inlet Flow 150.0
,r.,.
/""%
s l
j 100.0 N
l N
]
s u
s s s cr s
se N s a
ss'~,'
~, ~ ~
~
l l
50.0 0.0 O.0 3.0 6.0
~
Time (sec)
Figure 13a Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 STANDARD-IIAL)
Page 61
VERMONT YANKEE 24AS416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 300.0 - --- Rypass Valve Flow 200.0 Ea W
k
~
~
N 100.0 I
l f
/
0.C 4
0.0 3.0 6.0 Time (sec)
Figure 13b Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 STANDARD-HAL)
Page 62 l
l L______________1__
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 oi R clivity
Do er Reactivity
--- Scram Reactivity 10 Total Reactivity
.'\\
t
_g l
\\
u)
I y
I e
j c
0.0 8.
s t
E
\\l
~\\.........-
oo i'
i b
\\
E
\\
ts m
1 m
3 e
\\S
-1.0 i A /,
\\
s l
1
\\
l
\\
\\
\\.
i
_zo 0.0 3.0 6.0 l
'Ume (sec) 1 I
Figure 13c Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 STANDARD-HAL)
Page 63
[
VERMONTYANKEE 24AS416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0
--- Feedwater Flow 100.0 v.-
3
\\ ',
W i
N E
\\ ',
'y p.
t
'~~~
at
\\
~~.......
\\
\\.
0.0 s-,------,,, ' - - - - - - - - - - - - - - - - - - - - - - - - - - -
I
-100.0 O.0 3.0 6.0 Time (sec) 4 Figure 13d Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 STANDARD-HAL) 1 1
Page 64 l
l i
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Neutron Flux
- - - - - - Ave Surface Heat Flux
Core inlet Flow
/\\
150 0 - --- Core inlet Subcooling i
e i
,~.
I I
~~
-- ~~~~--~~~~.............- - -
100.0 C 3
. L. _.
y g
\\.
e 9
50.0 a
l I
0.0 O.O 20.0 40.0 Time (sec)
Figum 14a Plant Response to FW Controller Failum (BOC20 to EOC20 ELLLA-HAL)
Page 65 l
1 l-
VERMONTYANKEE 24AS416 Reload 19 Rev.2 Vessel Press Rise (psi) ~
- - - - - - Safety Valve Flow
Relief Valve Flow 125.0 - --- Bypass Valve Flow x
t 75.0 2g i
i 8
l t
\\
2s.O I
\\
\\
1
{I I
- 25.0 0.0 20.0 40.0 j
1 Time (sec)
I iI.
Figure 14b Plant Response to FW Controller Failure (BOC20 to EOC20 ELLLA-HAL)
Page 66 l
VERMONTYANKEE 24AS416 Reload 19 Rev. 2 Void Reactivity
- - - - - - Doppler Reactivity
Scram Reactivity
(
10 - --- Total Reactivity S
1
.5
[
C s
C 0.0 R
............,----- ---- ---- ----_ _y E
oU l
\\.
oc l'
- 1.0 l
1.
I i
4 1.
1 1
1 I'
I I
e
-2.0 0.0 20.0 40.0 Time (sec) j l
l l
l Figure 14c Plant Response to FW Controller Failure (BOC20 to EOC20 ELLLA-HAL) l t
l t
.Page 67 l
l
r-VERMONT YANKEE 24A5416 Reload 19 Rev. 2 i
Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow No
- --- Feedwater Flow
\\
100.o _. - - -
3
- 1. ),.,,.
is i:, :
a-I.
I:
- i...'
at
_t :
I:. '
l..
50.0 l$b \\
i::.
1:: i I..
\\
1::
li! \\
,:.. \\
i:
t 1"
1 0.0 0.0 20.0 40.0 Time (sec) j Figure 14d Plant Response to FW Controller Failure (BOC20 to EOC20 ELLLA-HAL) l J
i Page 68
1 VERMONTYANKEE 24A5416 l
Reload 19 Rev. 2 1
Pleutron Flux
-/ ve Surface Heat Flux
-Core inlet Flow 150.0 f
100.0 t..
3
.[ kd Mr vs s y
\\ ps s
s g
s s
f
's, s,s
,~,'
_~~~s~
s0.0 0.0 O.0 3.0 6.0 Time (sec)
Figure 15a Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EOC20 ELLLA-HAL)
L Page 69
I VERMONTYANKEE 24A5416 Reload 19 Rev. 2 l
i-I l
l l
l Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valv9 Flow 3M 0 - --- Bypass Valve Flow 200.0 a
cr Y
100.0 i
a
/
/
I 0.0 O.0 3.0 6.0 i
Time (sec)
Figure 15b Plant Response to ihrbine Trip w/o Bypass (BOC20 to EOC20 ELLLA-HAL)
Page 70
______)
VERMONTYANKEE 24A5416 i
Reload 19 Rev. 2 l
{
1 l
Re ivity Reactivity Scram Reactivity j
10 Total Reactivity
~
l1 1
l g
\\
\\
m E.
l
, {\\
.c 0.0 8.
hJ I
E
[*
I Oo
\\
\\
.f_.
t s
.N.
s E
\\
- 1.0 y
\\
k'f
\\\\
~
l l
\\
'1
\\
1
\\,
1 l
.z0 0.0 3.0 6.0 Time (sec)
Figure 15c Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EOC20 ELLLA-HAL)
Page 71
VERMONTYANKEE 24A5416 Reload 19 Rev. 2
)
)
I i
Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow 100.0 g-I N
l '.
'N E
I l b
!'~.,
~~-~~~~
?
W','
~,
~....
l i
1 0.0 d-.
I
-100.0 O.0 3.0 6.0 Eme (sec)
Figure 15d Plant Response to Thrbine 1 Yip w/o Bypass (BOC20 to EOC20 ELLLA-HAL) l Page 72 i
L____
VERMONTYANKEE 24AS416 Reload 19 Rev. 2 I
l Nedron Flux Avo Surface Heat Flux Coie inlet Flow 150.0 f
l g
',,.y'N'
'):~ ' ~ s
~
iii
./
s E
s'~s g
s s s*-s~
s 50.0 L
0.0 O.0 3.0 6.0 Time (sec)
Figure 16a Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 ELLLA-HAL)
Page 73 f
i
}
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 3#0 - --- Bypass Valve Flow 200.0 is oc
~
N 100.0 1
/
l
</
I 0.0 O.0 3.0 6.0
'Ame (sec)
I i
Figure 16b Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 ELLLA-H AL) l l
Page 74
I VERMONTYANKEE 24A5416 Reload 19 Rev. 2 i
1 oidNctivity r Reactivity
Scram Reactivity 1.0 Total Reactivity f.
g
\\
\\
e y
\\
g
- - -l.. }..t..........-
C 0.0 e
o I
\\
0 l
.{
['.
i g
._M
\\
'y e
~,
E t
-1.0 g
k I\\
\\
O
\\
1
\\
\\<
t
\\
\\'
I
-2.0 O.0 3.0 6.0 J
1 Time (sec)
{
a l
l J
Figure 16c Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 ELLLA-HAL) l Page 75 I
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 l
1 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow l
l l
100.0 r, g
3
\\ '.
%'N i
lii i
i at t ',
s '.pr. s,
/t I ;
, ~.
--~~~ ~
1
\\.
0.0 ww--'----
l l
I
-100.0 O.0 3.0 6.0 l
Time (sec)
Figure 16d Plant Response to Load Reject w/o Bypass (BOC20 to EOC20 ELLLA-HAL) l I
f l
Page 76 i
Q_____________________________
NTYANKEE 24A5416 R
Rev. 2 Neutron Flux
- - - - - - Ave Surface Heat Flux
Core inlet Flow N0
- --- Core inlet Subcooling l
\\
_yi e-g, g._- =
m _0 c g
h
'. \\
e
- \\
50.0
's.
i 0.0 o.O 20.0 40.0 Time (sec) l 1
i Figure 17a Plant Response to FW Controller Failure (BOC20 to EEOC20 ICF-HAL) l Page 77 1
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 125.0 - --- Bypass Valve Flow f.
l%
\\
\\
75.o g
i 25.0 I
I
- 25.0 o.o 20.0 40.0 Time (sec)
Figure 17b Plant Response to FW Contieller Failure (BOC20 to EEOC20 ICF-HAL) l I
Page 78
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Void Reactivity
- - - - - - Doppler Reactivity I
Scram Reactivity 10 - --- T0tal Reactivity i
g
[
y l.
e C
0,0
_ _ - m v.,,, __,,=,,,,,=,,--g==n._
l 8.
E OO I,
b t
- 5
\\
5 I,
m i
e T
i
-1.0 1,
I i
1 II li l'
I I;
l
-2.0 0.0 20.0 40.0 Time (sec)
Figure 17c Plant Response to FW Controller Failure (BOC20 to EEOC20 ICF-IIAL)
Page 79
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 1s0.0 - --- Feedwater Flow 100.0 3
,il a
1: :
e
\\
l!:'
k I:' \\
- i. :
so.o 1;:
I
\\
\\
I:
1:
k i!
l!
\\
I
'N o.o o.o 20.0 40.0 Time (sec)
Figure 17d Plant Response to FW Controller Failure (BOC20 to EEOC20 ICF-IIAL)
Page 80
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 f
lieutron Flux
--nye Surface Heat Flux
-- Core inlet Flow 150.0 4
[Us,f,. f % s's
__/
,\\
\\
100.0
/
A s
y s
a t
's s
oc s
s f
~~s's s~~~,
~~.
s0.0 i
0.0 O.0 3.0 6.0 Time (sec)
I j
Figure 18a Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EEOC20 ICF-HAL)
I Page 81 l
k L_____________.
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 VesselPress Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 300.0 - --- Bypass Valve Flow 200.0 Ea oc
~
m 100.0
/
/
0.0 O.0 3.0 6.0 Time (sec)
Figure 18b Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EEOC20 ICF-IIAL)
Page 82
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 oid Re ivity Reactivity ra eactMty 14 - --
To eactivity f'
i l\\
e
... ' '~~....
\\
y j
..l..
8
\\
h..h.........'..-
On g_
E o
s k
.y N
s
/,
s i
-E.
( F' S,
\\
1 E
\\
'h b
- 1.0 g
n
\\
\\
l
\\
T t
\\
l
\\
1 I
I
- 2.0 0.0 3.0 6.0 Time (sec) 3 r'
Figure 18e Plant Response to Turbine Trip w/o Bypass (BOC20 to EEOC20 ICF-HAL)
I l
l i
l I
Page 83 l
0 t
i i
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow 100.0 g-3 1
y l '.
N, I
g i
N/ %' ' ',7'. ', -
.T, " _
N','
l
~, _, -
l 0.0 d - -+.
.--. ----- ---~~----------------------
b y
,f I
f
-100.0 O.0 3.0 6.0 Time (sec)
Figure 18d Plant Response to ibrbine Trip w/o Bypass (BOC20 to EEOC20 ICF-H AL)
Page 84
VERMONTYANKEE 24A5416 Reload 19 Rev. 2_
Neutron Flux
< Avi Surface Heat Flux
Co'e inlet Flow 150.0
~
/
N f-/
~~
's r
N
__ _ /
s s
100.0 N
e R
s's y
{
N E
g
's s
s'
, ~
~ ~ ~
50.0 0.0 O.0 3.0 6.0 Time (sec)
Figure 19a Plant Response to Load Reject w/o Bypass (BOC20 to EEOC20 ICF-HAL) l-l Page 85 L
VERMONT YANKEE 24A5416 Reloac.19 Rev. 2 i
Vessel Press Rise (psi)
- - - - - Safety Valve Flow
Relief Valve Flow 300.0 - --- Bypass Valve Flow 200.0 clii Y
P
~
w 100.0 -
/
/
-/
i 0.0 O.0 3.0 6.0 Time (sec)
Figure 19b Plant Response to Load Reject w/o Bypass (BOC20 to EEOC20 ICF-HAL)
Page 86
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Re ivity Reactivity Scram Reactivit/
10 Total Reactivity g
l\\
e b
I
,~
0.0
-d
),l
. \\
8.
.q...........-
{
eo O
l
.(
N
\\
u s
._l.i 1
i I
t
\\
\\
'a l
- 1.0 g
Vi
\\
\\
i i
1
\\
\\
~
i
\\
\\
\\
I-I
-2.0 0.0 3.0 6.0 Time (sec) j l
Figure 19c Plant Response to Load Reject w/o Bypass (BOC20 to EEOC20 ICF-HAL) l l
l j
Page 87 w-
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow N0
- --- Feedwater Flow 100.0,g'%.N 3
\\
lii
\\
c'
\\ ',
's g
\\
~.' ~:
7.-~
W: ~.
\\ ',
\\
\\..
0.0 w
s.,*
-100.0 O.0 3.0 6.0 Time (sec)
Figure 19d Plant Response to Load Reject w/o F sss (BOC20 to EEOC20 ICF-HAL) l I
Page 88
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 l,
Neutron Flux
- - - - - - Ave Surface Heat Flux
Core Inlet Flow 150.0 - --- Core inlet Subcooling P'k
\\
~u
\\
j
,a.a.--
'8
=aGLL- - = =.:. = '.u * * ' - -- -- -. - -
V
\\
,no_o
'.\\
is tr
\\
e
~
',\\
50.0 I
o_o 0.0 20.0 40.0 Time (sec)
Figure 20a Plant Response to FW Controller Failure (BOC20 to EOC2B-2205 mwd /MT (2000 mwd /ST) STANDARD)
Page 89
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 125.0 - --- Bypass Valve Flow b.
l 1
\\
75.0 i
\\
1 u
a E
8 i
j i
\\
25.0 I
4
- 25.0 l
i 0.0 -
20.0 40.0 Tme (sec) l l
l Figure 20b Plant Response to FW Contmiler Failure (BOC20 to EOC20-2205 mwd /MT (2000 mwd /ST) STANDARD)
Page 90
VERMONTYANKEE 24A5415 Reload 19 Rev. 2 Void Reactivity
- - - - - - Doppler Reactivity
Scram Reactivity 10 - --- Total Reactivity i
4
^
e 19 I
/
c E
g.
- - - ~ m-w.- e...v.=. =,-- =- y,-.=........ 1..,.,'
o.o I,'
E O
O I
j t-
\\
toe
)
m t.
-1.o i
l l'
I i.
1 g
1 I
1
-2.0 0.0 20.0 40.0 Time (sec) i
)
i-l l-l 4
Figure 20c Plant Response to FW Contmiler Failure (BOC20 to EOC20-2205 mwd /MT (2000 mwd /ST) STANDARD)
Page 91 t
. VERMONT YANKEE 24A5416 Reload 19 Rev. 2
{
i l
Level (inch-REF-SEP-SKRT)
I
- - - - - - Vessel Steam Flow j
Turbine Steam Flow 1
150.0 - --- Feedwater Flow
\\
'~h ( .
~-~
100.0 --
3 I.' i g
l' e
i at ll l l
ll,l.l i
l g.
e 50.0 l!.: \\
i lll e
jl..\\
lll li i
l! \\
li.
lll k
lll I
I' 0.0 O.0 20.0 40.0 Time (sec)
Figure 20d Plant Response to FW Controller Failure (BOC20 to EOC20-2205 mwd /MT (2000 mwd /ST) STANDARD)
Page 92 L
VERMONT YANKEE 24A5416 Reload 19 Rev. 2
/
Neutron Flux
--dve Surface Heat Flux
-- Core Inlet Flow 150.0
', j~%,s
'g r \\,'
, \\.'t v.
's 100.0 N
3 s
s k
{
s,
~
ge
)
's s
s ~~,'s
.. ~~. ~..
, ' - -., ~
~,,,
50.0
=
0.0 O.0 3.0 6.0 Time (sec)
Figure 21a Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EOC20-2205 mwd /MT (2000 mwd /ST) STANDARD) l Page 93
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 I
Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow I
300 0 - --- Gypass Valve Flow 200.0 E
Y
~
^
i 4
100.0 I
~
/
/
I 0.0 O.0 3.0 6.0 Time (sec) i i
Figure 21b Plant Response to hrbine Trip w/o Bypass (BOC20 to EOC20-2205 mwd /MT l
(2000 mwd /ST) STANDARD) t Page 94 l
L_____
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 id R clivity pp ReactiAty
- Sc Reactivity 1.0 - --
Total Reactivity
.rn
' ~ '
- ~,....'....
l\\
12 y
E k.
0.0 R
Q.'.,
~~~~~~~,.
E
\\
-~
oo
\\
h
\\
i
\\
5 i
y
\\.
\\\\
- 1.0
\\
\\
\\
1). N' 1
\\
\\
1
\\
-2.0 1
1 I
0.0 3.0 6.0 Time (sec)
Figure 21c Plant Response to 'Ibrbine 'IYip w/o Bypass (BOC20 to EOC20-2205 mwd /MT (2000 mwd /ST) STANDARD)
Page 95
VERMONTYANKEE 24A5416 Reload 19 Rev. 2
\\
i Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow 4
Turbine Steam Flow I
200.0 - --- Feedwater Flow 1
e l
l i
100.0 g-3
)
3 I '.
%'N m
i ae i
l'.
'fn.~.x.
~
_W'
~.
\\
~,_,...
l o.o _1_i__1____'.__,'______.___________.__,_____________.
l l
_ioo.o l
0.0 3.0 6.0 Time (sec) t I
\\
Figure 21d Plant Response to 'Ihrbine 'IYip w/o Bypass (BOC20 to EOC20-2205 mwd /MT l
(2000 mwd /ST) STANDARD) l i
Page %
i L
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Neutron Flux
- Av i Surface Heat Flux Co's inlet Flow 150.0
/'.
,/~' N s
'/,
N es j
100.0
/
\\
j
\\
g Q
\\
~
' ' ~.
's
\\
s s
s s'ss~
50.0
..'~..,'
0.0 O.0 3.0 6.0 Eme (sec)
Figure 22a Plant Response to Load Reject w/o Bypass (BOC20 to EOC20-2205 mwd /MT (2000 mwd /ST) STANDARD)
Page 97
l VERMONTYANKEE 24A5416 Reload 19 Rev. 2 l
k l
Vessel Press Rise (psi)
- - - - - - Safety Valve F10w
ReRef Valve Flow 300.0 - --- Bypass Valve Flow 200.0 lii cr
~
~.
100.0
/
l 0.0 O.0 3.0 6.0 Time (sec)
Figure 22b Plant Response to Load Reject w/o Bypass (BOC20 to EOC26-2205 mwd /MT (2000 mwd /ST) STANDARD) 1 l
l l
Page 98
._____________________-__A
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 VoldNactivity
- - - - - - Doppler Reactivity Scram Reactivity 10 - --
Total Reactivity
( },
[
g 1j i
c 0.0
\\
8.
\\
]
E
\\l
's---*..-
O 8
1
.y
'V
\\
\\
\\s
\\
E E
1
- 1.0
\\
{
\\
\\
\\
)
)
\\i
.j s
.i 0
\\
5-I
-2.0 0.0 3.0 6.0 Time (sec)
Figure 22c Plant Response to Load Reject w/o Bypass (BOC20 to EOC20-2205 mwd /MT (2000 mwd /ST) STANDARD) r Page 99 l-
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow
(
l 100.0 j
3 i '.
lii
\\
N tr 1 ',
y m'.. '.-
g l
K: '.,
\\
1
\\..
0.0 m.__-.___,_.
i l
l l
-100.0 O.0 3.0 6.0 Time (sec)
I Figure 22d Plant Response to Load Reject w/o Bypass (BOC20 to EOC20-2205 mwd /MT
'~
(2000 mwd /ST) STANDARD)
Page 100
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Neutron Flux
- - - - - - Ave Surface Heat Flux
Core inlet Flow 150.0 - --- Core inlet Subcooling c1
\\
. _J
- --_ r '_C.,.......--
{jk, *\\
,00.0 =_
- _.. - - = - - - - - - - - - - - - - - - - - - - -
E.
cc
~
'(
50.0 I
o.O 0.0 20.0 40.0 Time (sec)
Figure 23a Plant Response to FW Controller Failure (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 101
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 l
Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow 125.0 - --- Bypass Valve Flow B
5 1
\\
75.0 i
{
t E
l I
t i
\\
f 25.0 1
I
-2s.0 0.0 20.0 40.0 Eme (sec)
Figure 23b Plant Response to FW Controller Failure (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 102
VERMONTYANKEE Reload 19 24A5416 Rev. 2 Vold Reactivity
- - - - - - Doppler Reactivity
Scram Reactivity 10 - ---- Total Reactivity i
e 6
3 C
e
- i.. l c
0.0
___.,__._n_,
g.,___________
R E
I',-
l O
O b
1 s
1 g
I co 1
ex i.
-1.0 -
l l.
1 I
l.
I i
l' I
l t
1
-2.0 0.0 20.0 40.0 Time (sec)
Figure 23c Plant Response to FW Controller Failure (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 103
VEkMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 150.0 - --- Feedwater Flow 100.0 --
q, I,, e' S
h:l :
I e
- i. '
l+. e.
I;,
I' '
50.0 -
ll l*. \\
lll
\\
l'.
!!! \\
l'.
lll
\\
j'.
I l
i '.
5 0.0 0.0 20.0 40.o
'Dme (sec)
Figure 23d Plant Response to FW Controller Failure (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 104
VERMONTYANKEE Reload 19 24A5416 Rev. 2 14eutron Flux Ave Surface Heat Flux
-- Core inlet Flow 150.0 j sey' '- ['"N,s
, ' \\.[ ',
s 100.0 3
s N
3
's tr
\\
{
s s s s~~s s,~~
s0.0 -
~~.
0.0 O.0 3.0 6.0 Time (sec)
Figure 24a Plant Response to 'Ibrbine Trip w/o Bypass (BOC70 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 105
VERMONTYANKEE Reload 19 24A5416 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow N
- --- Bypass Valve Flow 200.0 E
C 100.0 -
l
/
l 0.0 0.0 3.0 6.0 Time (sec)
Figure 24b Plant Response to 'Ihrbine Trip wS Bypass (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 106
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 old R ctivity ppi Reactivity a Reactivity 10 Tota Reactivity
^
l,
^g 8
-)
f C
O.0 j
b,.
8.
g
'6-----
E
\\
oo
\\
l I
I b
s s
m T
\\
\\
- 1.0
\\
\\
.Q' '),
)
I
\\
\\
4
\\
l
-2.0 I
I 0.0 3.0 6.0 Time (sec)
Figure 24c Plant Response to Thrbine Trip w/o Bypass (BOC20 to EOC20-Il02 mwd /MT (1000 mwd /ST) STANDARD)
Page 107
VERMONT YANKEE 24A5416 Reload 19 Rev. 2
- Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow 100.0 y
7,-
1
'm.
I '.
CC N.
g e '.
\\,' %. ~,,.
~~
~.,,,.
l i
0.0 d- --f----r'----------------------------
, l '. *,
s
- 100.0 O.0 3.0 6.0 Time (sec)
Figure 24d Plant Response to 'Ibrbine Trip w/o Bypass (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 108
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 Na utron Flux
- Ave Surface Heat Flux Core inlet Flow 150.0
,.,f~~~-
(
N 100.0
'8 N
s W
N s x
s, N
te s s s s~
~_
50.0 -
0.0 0.0 3.0 6.0 0
Time (sec)
O Figure 25a Plant Response to Load Reject w/o Bypass (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 109
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
ReEef Valve Flow 300 0 - --- Bypass Valve Flow 200.0 a
Y r
~
N 100.0
/
/
l 0.0 0.0 3.0 6.0 Time (sec)
Figure 25b Plant Response to Imad Reject w/o Bypass (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 110
VERMONTYANKEE 24A5416 Reload 19 R v. 2 Voi activity
- - - - - - Doppler Reactivity Scram Reactivity 10 Total Reactivity f
e
~,..
.9 l
g
\\
. -l.
g o.o
\\
Q.
\\
s
'a-----',
E
\\'
~
8 d
\\
t 2
\\
13 i
e T
\\
\\
cc
\\
- 1.0 g
\\
\\
u]o
\\
~
\\
b, l
\\
's.
\\
l I-1 I
-2.0 o.o 3.0 6.0 Time (sec)
Figure 25c Plant Response to Load Reject w/o Bypass (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 111
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 2m0 - --- Feedwater Flow 100.0 v..
E
\\ ',
E 1
m'N x
\\
~ N a
g I
3.. ~.,
\\ '.
....- **'~~....
g
\\
\\
/
0.0 1
-100.0 0.0 3.0 6.0 Time (sec)
Figure 25d Plant Response to Load Reject w/o Bypass (BOC20 to EOC20-1102 mwd /MT (1000 mwd /ST) STANDARD)
Page 112
[egONTYANKEE 24g5416 2
6 10 14 18 22 26 30 34 38 42 43 39 0
0 0
35 16 32 16 31 27 0
0 0
0 23 10 10 19 0
0 0
0 15 11 16 32 16 7
0 0
0 3
Notes: 1. Number indicates number of notches withdrawn out of 48. Blank is a fully withdrawn rod.
- 2. Error rod is (18,19).
Figure 26 Limiting Rod Pattern Page 113
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 f
Neutrc n Flu <
- - - - - - Ave SJrface Heat ~lur
Core iniet Flow 150.0
/s'hf,da'U sh q
j
\\ N a
N '.
tr N
s
's s.
N *g ~.'
- 4.g %
' ?,
s0.0 -
I 0.0 0.0 4.0 8.0 Time (sec)
Figure 27a Plant Response to MSIV Closure (Flux Scram)-(ICF-IIBB)
Page 114
VERMONTYANKEE 24AS416 Reload 19 Rev. 2 Vessel Press Rise (psi)
- - - - - - Safety Valve Flow
Relief Valve Flow N
- --- Bypass Valve Flow t
200.0 e
F til l
E 100.0 -
/
I l
/
o.o 0.0 40 8.0 Time (sec)
Figure 27b Plut Response to M5ly'V Closure (Flux Scram}-(ICF-IIBB)
Page 115
VERMONT YANKEE 24A5416 Reload 19 Rev. 2
- Void Reactivity
- - - - - - Doppler Reactivity
Scram Reactivity 1.0 - --- Total Reactivity k
g y.r\\
~~,.
g
.,i
~
-,.- s
(
g 0.0 a.
.s E
\\
O
\\
.3 O
\\
b
\\
h sy s\\
T
\\
E
\\
- 1.0 -
\\
\\
\\
s
\\
1
\\
\\
I T
I 1
'\\
-2.0 O.0 4.0 8.0 Time (sec)
Figure 27c Plant Response to MSIV Closure (Flux Scram)-(ICF-IIBB)
Page 116
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Level (inch-REF-SEP-SKRT)
- - - - - - Vessel Steam Flow
Turbine Steam Flow 200.0 - --- Feedwater Flow 100.0 E
,\\
\\
E
\\
\\
\\
g a
Q,: '.'.)'..g........ ' ' ' ' ' ' L'.'
- l. g
~.
'.,..\\.
o.o -
',l'.l'.'wa'___________________________.
f
-100.0 o.o 4o 8.o Time (sec)
Figure 27d Plant Response to MSIV Closure (Flux Scram)-(ICF-HBB)
Page 117
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Appendix A Analysis Conditions' To reflect actual plant parameters accurately, the values shown in Table A-1 were used this cycle.
Table A-1 STANDARD
~
Parameter Analysis Value Thennal power, MWt 1593.0 Core flow, Mlb/hr 48.0 Reactor pressure, psia 1040.0 Inlet enthalpy, BTU /lb 521.1 Non-fuel power fraction 0.038 Steam flow analysis,Mlb/hr 6.46 Dome pmssure, psig 1010.0 Thrbine pressure, psig 965.7 No. of Safety / Relief Valves 3
No. of Single Spring Safety Valves 2
Relief mode lowest setpoint, psig I113.0 Safety mode lowest setpoint, psig 1277.0 ELLLA Parameter Analysis Value Thermal power, MWt 1593.0 Com flow, Mlb/hr 41.8 Reactor pressum, psia 1037.6 Inlet enthalpy, BTU /lb 517.0 Non-fuel power fraction 0.038 Steam flow analysis, Mlb/hr 6.45 Dome pressure, psig 1010.0 7brbine prasure, psig 965.8 No. of Safety / Relief Valves 3
No. of Single Spring Safety Valves 2
Relief modelowest setpoint, psir 1113.0 Safety mode lowest setpoint, psig 1277.0 Page 118
YANKEE 24A5416 Re 9
Rev. 2 ICF Parameter Analysis Value Thermal power, MWt 1593.0 Core flow, Mlb/hr 51.4 Reactor pressure, psia 1041,4 Inlet enthalpy, BTU /lb 522.9 Norsfuelpower fraction 0.038 Steam flow analysis, M1b/hr 6.46 Dome pressure, psig 1010.0
~
Tbrbine pressure,psig 965.6 No. of Safety / Relief Valves 3
No. of Single Spring Safety Valves 2
Relief modelowest setpoint, psig 1113.0 Safety mode lowest setpoint, psig 1277.0 Page 119
VERMONTYANKEE Reload 19 24A5416 Rev. 2 l
Appendix B Thermal Mechanical Compliance ne fuel rod is evaluated to ensure that fuel rod failure due to fuel melting will not occur. Evaluatioris are perfonned fornormal steady-state operation and whole core AOO's to assure that fuel melting does not occur. Forlocal AOO's, such as the Rod Withdrawal Error, a small amount of calculated fuel pellet centennelting may occur, but the event is limited by the 1% cladding circumferential plastic strain criterion. The fuel rod is also evaluated to ensure that fuel rod failure due to pellet-claading mechanical interaction will not occur. Evaluations are performed for the limiting AOO's to ensure that the circumferential cladding plastic strain during the event does not exceed 1%.
The AOO's specifically analyzed for Vermont Yankee Cycle 20 are Load Reject w/o Bypass (LRNBP),
Turbine Trip w/c Bypass (TrNBP) FW ControllerFailure (FWCF), Loss-of-Feedwater Heating (LFWH),
Rod Withdrawal Error (RWE). Inadvertent High Pressure Core Injection (IIPCI), and Loss of Main Generator Stator Cooling (LOSC). The Thermal Overpowra (TOP) is used to calculate the potential for the fuel to enter the molten state at the fuel center line. The Mechanical Overpower (MOP) is used to calculate thepotentialforoverstraining of thecladding.
Thermal mechanical compliance is implemented as Maximum Average Planar Linear Heat Generation Rate (MAPLHGR)intheplant'stechnicalspecificationandprocesscomputer. AdherencetotheMAPLHGR limits assure that the fuel rod thermal-mechanical design and licensing criteria related to nonnal steady-state operation and criteria related to AOO's will be met.
The Linear Heat Generation Rate (LHGR) limit for all of the fuelloaded in Cycle 20 is 14.4 kw/ft.
s Page 120
VERMONTYANKEE 24A5416 Reload 19 Rev. 2 Appendix C Loss of Main Generator Stator Cooling The loss of main generator stator cooling (LOSC) event is analyzed with the 3D-Simulator code for both the ACPR calculation and the thermal mechanical compliance calculation. The ACPR for this event is calcu-lated based on the full expected change in feedwater temperatum of-207.1 degmes F without taking credit for the flux scram or flow--biased APRM neutmn flux scram. The overpowers calculated for the LOSC with the fuli expected change in feedwater temperature are very significant. However,if cmdit is taken for the flux scram at rated conditions and the flow-biased APRM neutmn flux scram is credited at off-rated condi-tions, only twenty bundles in the core will require a MAPLHOR penalty to satisfy the fuel thennal-mechani-cal checks (see Appendix B). The penalty can be graduated as a function of exposure as follows:
1% penalty from BOC to EOC-5181 mwd /MT(4700 mwd /ST) and 2.5% penalty from EOC-5181 mwd /MT(4700 mwd /ST) to Extended EOC with increased core flow.
The 20 bundles to be penalized are as follows:
PANACEA Coordinates SITE Coonlinates 11,03 21,40 12,03 23,40 09,05 17,36 14,05 27,36 05,09 09,28 09,09 17,28 14,09 27,28 18.09 35,28 03,11 05,24 20,11 39,24 03,12 05,22 20,12 39,22 05,14 09,18 09,14 17,18 14,14 27,18 18,14 35,18 09,18 17,10 14,18 27,10 11,20 21,06 12,20 23,06 Page 121
VERMONTYANKEE Reload 19 24A5416 Rev. 2 Appendix D Exposure Dependent Limits
'Ib provide for impmved operating flexibility and cycle extension for Cycle 20, expanded operating analyses were performed for Increased Core Flow (ICF) at 107% rated flow. The analyses for cycle extension with ICF was performed at the extended end ofcycle (EEOC)1 exposure poir sing appropriate thermal hydraulic conditions. In addition, transient analysis calculations were perfom ulin the extended load line region (ELLLA) at 87% flow at the standant end of cycle (EOC)2, The operating limits for cycle operation from BOC to EEOC with ICF, including the ELLIA region are given in Section 11. The MCPR operating limits for Option A and for Measured Scram Time (MST) are exposure dependent and are for GE13 which bound the GE8x8NB fuel and are as follows:
Operating Limits (BOC to EEOC)
Cycle Exposure Designation Option A MST BOC to EOC-2205 mwd /MT(2000 mwd /ST) 1.37 1.33 EOC-2205 mwd /MT(2000 mwd /ST) to EOC-Il02 mwd /MT(1000 mwd /ST) 1.38 1.34 EOC-1102 mwd /MT(1000 mwd /ST) to EOC 1.47 1.37 EOC to EEOC 1.50 1.40 Ifincreased core flow is to be used throughout the cycle then (Se EEOC operating limits with increased core flow must be applied.
The analytical results and operating limits presented in this report include operating limits for Vermont Yankee Reload 19/ Cycle 20 for operation with increased core flow up to 107% of rated flow. At Vermont Yankee's request, the core flow rate analysis assumption was conservatively extended from 100% core flow to 107% core Dow to partially support a future change in the core flow operating strategy. The operating limits forincrer. sed core flow do not support a safety evaluation for operation above 100% of rated core o
flow until necessary additional evaluations are made to address the impact on Structures, Systems and Components associated with this operating state.
- 1. EEOC identifies the exposure point attainable at rated power using ICF. For Cycle 20, the EEOC core average exposure is 24,577 mwd /ST or 27,092 mwd /MT.
- 2. EOC identifies the exposure point attainable at rated power and flow. For Cycle 20, the EOC core average exposure is 24,277 mwd /ST or 26761 mwd /MT.
Page 122
I VERMONT YANKEE 24A5416 Reload 19 Rev. 2 l
Appendix E l
Option I-D Stability Solution Exclusion Region The Vermont Yankee Nuclear Power Station has implemented the Option I-D stability solution, documented in the reference. This stability solution creates an " exclusion region" in the plant operating map wherein oscillatory power behavior is conservatively predicted and which is avoided during plant operations. The exclusion region was reevaluated for Cycle 20 using the BWR owners' group long-term solution regional exclusion methodology, and the following update to the exclusion region is needed for Cycle 20 in order to maintain the core decay ratio less than 0.8.
O
% Core Flow
% Power E
25.4 30.7 E
28.0 32.4 5
31.0 34.8 E
34.0 38.0 E
37.0 42.0 E
40.0 47.0 E
43.0 53.4 E
46.0 61.5 E
49.0 71.7 49.8 74.9 Refemnce:
E-1 Application of the " Regional Exclusion with Flow-Biased APRM Neutron Flux Scram" Stability Sclution (Option I-D) to the Vermont Yankee Nuclear Power Plant, GENE-637--018-0793, July 1993.
o Page 123
6' VERMONT YANKEE 24A5416 Reload 19 Rev. 2 Appendix F Margin to Safety Valve Lift I Main Steam Line Iso Margin to safety valve lift was calculated for Vermont Yankee Nuclear Power Station for both abnormal operational transients (AOTs) which are infrequent events expected to occur once in plant lifetime and moderate frequency events (events expected to occur greater than once in plant lifetime). The pressure margin is defmed by the difference between the event's peak steamline pressure and the nominal safety valve setpoint. The recommended pressure margins are 25 psi for AOTs and 60 psi for moderate frequency events. The Generator Load Rejection without Bypass AOT demonstrated 69.5 psi margin, while the moderate frequency event analyzed, a Page 124
VERMONT YANKEE 24A5416 Reload 19 Rev. 2 Appendix G Pump Seizure in Single Loop Operation l
The Vermont Yankee Nuclear Power Station Cycle 20 Operating Limit MCPR at a bounding single loop op-eration (SLO) at maximum flow (60%)=1.33
- Kr (maximum runout 104.5) which =1.33
- 1.08 = 1.44. A SLO pump seizure event for Vermont Yankee Cycle 20 will not violate the 1.13 SLO SLMCPR.
S Page 125
...