NL-23-0611, Core Operating Limits Report, Cycle 11 Version 1
| ML23200A355 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 07/19/2023 |
| From: | Chamberlain A Southern Nuclear Operating Co |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| Shared Package | |
| ML23200A353 | List: |
| References | |
| NL-23-0611 | |
| Download: ML23200A355 (1) | |
Text
._ Southern Nuclear July 19, 2023 Docket No.: 52-026 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Southern Nuclear Operating Company Vogtle Electric Generating Plant - Unit 4 Core Operating Limits Report, Cycle 11 Version 1 Ladies and Gentlemen:
Southern Nuclear Operating Company, Inc.
3535 Colonnade Parkway Birmingham, AL 35243 NL-23-0611 10 CFR 52.97(c)
In accordance with Technical Specifications (TS) 5.6.3.d for Vogtle Electric Generating Plant (VEGP) Units 3 and 4, Southern Nuclear Operating Company (SNC) submits the VEGP Core Operating Limits Report (COLR) for Unit 4, Cycle 1, Version 1. provides the Non-Proprietary version of the COLR. provides the Proprietary version of the COLR. The enclosure contains Proprietary information; therefore, SNC requests that this enclosure be withheld under the provisions of 10 CFR 2.390. provides the SNC affidavit for withholding the proprietary information contained in. is CAW-21-5231, Application for Withholding Proprietary Information from Public Disclosure and Affidavit. Enclosure 2 contains information proprietary to Westinghouse Electric Company LLC ("Westinghouse"); it is supported by an Affidavit signed by Westinghouse, the owner of information. The Affidavit sets forth the basis on which the information may be withheld from public disclosure by the Nuclear Regulatory Commission ("Commission") and addresses with specificity the considerations listed in paragraph (b)(4) of Section 2.390 of the Commission's regulations.
Accordingly, it is respectfully requested that the information that is proprietary to Westinghouse be withheld from public disclosure in accordance with 10 CFR Section 2.390 of the Commission's regulations.
Correspondence with respect to the copyright or proprietary aspects of the items listed above or the supporting Westinghouse Affidavit should reference CAW-21-5231 and should be addressed to Anthony J. Schoedel, Manager, eVinci Licensing & Configuration Management, Westinghouse Electric Company, 1000 Westinghouse Drive, Cranberry Township, Pennsylvania 16066.
Correspondence with respect to proprietary aspects of this letter and its enclosures should also be addressed to R. Keith Brown at the contact information within this letter.
U.S. Nuclear Regulatory Commission NL-23-0611 Page 2 of 2 This letter contains no regulatory commitments. This letter has been reviewed and determined not to contain security-related information.
If you have any questions, please contact me at 205.992.6361.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 19th of July 2023.
Respectfully submitted, Amy C. Chamberlain Licensing Manager Southern Nuclear Operating Company
Enclosures:
- 1) Vogtle Electric Generating Plant (VEGP) Unit 4 - Core Operating Limits Report (COLR), Cycle 1, Version 1 (Non-Proprietary)
- 2) Vogtle Electric Generating Plant (VEGP) Unit 4 - Core Operating Limits Report (COLR), Cycle 1, Version 1 (Proprietary) (Withheld Information)
- 3) Vogtle Electric Generating Plant (VEGP) Unit 4 - Affidavit from Southern Nuclear Operating Company for Withholding Under 10 CFR 2.390
- 4) Vogtle Electric Generating Plant (VEGP) Unit 4 - Westinghouse Application for Withholding Proprietary Information from Public Disclosure CAW-21-5231 and accompanying Affidavit cc:
Regional Administrator, Region II VPO Project Manager Senior Resident Inspector - VEGP 3&4 Document Services RTYPE: VNP.LI.L00 File AR.01.02.06
Southern Nuclear Operating Company NL-23-0611 Vogtle Electric Generating Plant {VEGP) Unit 4 Core Operating Limits Report {COLR), Cycle 1, Version 1
{Non-Proprietary)
(This Enclosure consists of 65 pages, including this cover page)
VOGTLE ELECTRIC GENERATING PLANT UNIT 4 CYCLE 1 CORE OPERATING LIMITS REPORT NON-PROPRIETARY VERSION
Westinghouse Non-Proprietary Class 3 VOGTLE ELECTRIC GENERATING PLANT (VEGP)
UNIT 4 CYCLE 1 CORE OPERATING LIMITS REPORT (COLR)
Version 1 August 2021 SV4-GW-F1-001-NP Revision 0 Page A-2 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for the Vogtle Electric Generating Plant, Unit 4, Cycle 1 has been prepared in accordance with the requirements of Technical Specification 5.6.3.
The Technical Specification Safety Limits (SLs) and Limiting Conditions for Operation (LCOs) affected by this report are listed below:
SL 2.1.1 Reactor Core SLs LCO 3.1.1 SHUTDOWN MARGIN (SOM)
LCO 3.1.3 Moderator Temperature Coefficient (MTC)
LCO 3.1.5 Shutdown Bank Insertion Limits LCO 3.1.6 Control Bank Insertion Limits LCO 3.2.1 Heat Flux Hot Channel Factor (Fa(Z)) (Constant Axial Offset Control (CAOC) W(Z) Methodology)
LCO 3.2.2 Nuclear Enthalpy Rise Hot Channel Factor (F~H)
LCO 3.2.3 AXIAL FLUX DIFFERENCE (AFD) (Constant Axial Offset Control (CAOC) Methodology)
LCO 3.2.5 On-Line Power Distribution Monitoring System (OPDMS)-Monitored Parameters LCO 3.4.1 RCS Pressure, Temperature, and Flow Departure from Nucleate Boiling (DNB) Limits LCO 3.9.1 Boron Concentration SV4-GW-F1-001-NP Revision 0 Page A-3 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 2.0 2.1 OPERATING LIMITS Reactor Core SLs (SL 2.1.1)
The Reactor Core SLs for MODES 1 and 2 are:
2.1.1 The combination of THERMAL POWER, RCS highest loop cold leg temperature, and pressurizer pressure shall not exceed the limits specified in Table 2.1.1 and Figure 2.1.1.
2.2 SHUTDOWN MARGIN (SOM)
The SOM limit for MODE 2 with kett < 1.0 is:
2.2.1 The SOM shall be greater than or equal to 1.6%.b.k/k.
The SOM limit for MODES 3, 4, and 5 is:
2.2.2 The SOM shall be greater than or equal to 1.6%.b.k/k.
SV4-GW-F1-001-NP Revision 0 Page A-4 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.1.1 Reactor Core Safety Limits
_a,c SV4-GW-F1-001-NP Revision 0 Page A-5 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 SV4-GW-F1-001-NP Revision 0 Figure 2.1.1 Reactor Core Safety Limits a,c Page A-6 of 64
2.3 Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Moderator Temperature Coefficient (MTC)
The BOL/ARO MTC upper limit for MODE 1 and MODE 2 with kett ~ 1.0 is:
2.3.1 The MTC shall be more negative than or equal to the power-dependent upper limit specified in Figure 2.3.1.
The EOL/ARO MTC lower limit for MODES 1, 2, and 3 is:
2.3.2 The MTC shall be less negative than or equal to
[
]a,c The ARO/HFP MTC surveillance limits for EOL are:
2.3.3 At 300 ppm, the MTC shall be less negative than or equal to
[
]a,c 2.3.4 At 60 ppm, the MTC shall be less negative than or equal to
[
]a,c The measurements to support EOL MTC measurement may be exempted provided both of the following conditions are met:
2.3.5 The measured-to-predicted differences for the parameters listed in Table 2.3.5 are within their specified criteria.
2.3.6 The value of the revised predicted MTC, calculated in accordance with Table 2.3.6, is less negative than the ARO/HFP MTC surveillance limit at 300 ppm.
Note: ARO stands for All Rods Out BOL stands for Beginning of (Cycle) Life EOL stands for End of (Cycle) Life HFP stands for Hot Full (Thermal) Power SV4-GW-F1-001-NP Revision 0 Page A-7 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 SV4-GW-F1-001-NP Revision 0 Figure 2.3.1 BOUARO MTC Upper Limit a,c Page A-8 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.3.5 Benchmark Criteria for Application of the EOL MTC Measurement Conditional Exemption Parameter Criteria Ti me/ Activity Power Ascension Testing Assembly Power
+/- 0.10 or 10%
Routinely at RTP
[
]a,c lncore Quadrant
+/-4%
Power Ascension Tilt (Low Power)
Testing Power Ascension lncore Quadrant Testing Tilt (RTP)
+/-2%
Routinely at RTP
[
]a,c Low Power Physics Testing Power Ascension Core Reactivity
+/- 1000 pcm Testing Routine Surveillance Requirement Low Power Physics BOL HZP ITC
+/- 2.0 pcm/°F Testing Individual
+/- 75 pcm Low Power Physics Bank Worth or 10%
Testing Total
+/-5.6%
Low Power Physics Bank Worth Testing Note: EFPD stands for effective full power days EQXE stands for equilibrium xenon HZP stands for Hot Zero (Thermal) Power Minimum Documentation Frequency Twice - At an intermediate power (40-75% RTP) plateau and at a full power (> 90% RTP) plateau Monthly after reaching RTP Once - At a low power(~ 30% RTP) plateau Once - At the RTP power ascension test plateau Monthly after reaching RTP Once - After fuel load and prior to MODE 1 (SR 3.1.2.1)
Once - In MODE 1 upon reaching RTP and EQXE conditions
("Hot Full Power Boron Endpoint")
After 60 EFPD, every 31 EFPD thereafter (continuation of SR 3.1.2.1)
Once - After fuel load and prior to MODE 1 (needed to support SR 3.1.3.1)
Once - After fuel load and prior to MODE1 Once - After fuel load and prior to MODE 1 ITC stands for Isothermal Temperature Coefficient OPDMS stands for Online Power Distribution Monitoring System RTP stands for rated thermal power SR stands for surveillance requirement SV4-GW-F1-001-NP Revision 0 Page A-9 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.3.6 Algorithm for Calculation of the Revised Predicted MTC at 300 ppm a,c SV4-GW-F1-001-NP Revision 0 Page A-10 of 64
2.4 Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Shutdown Bank Insertion Limits (LCO 3.1.5)
The shutdown bank insertion limits in MODES 1 and 2 are:
2.4.1 All shutdown banks shall be positioned greater than or equal to [
]a,c steps withdrawn (swd).
2.5 Control Bank Insertion Limits (LCO 3.1.6)
The control bank rod insertion limits (Rlls), sequence limits, and overlap limits in MODE 1 and MODE 2 with kett ~ 1.0 are:
2.5.1 M-Bank Limits 2.5.1.a With the OPDMS functional, the M-Banks shall be positioned greater than or equal to the power-dependent limit specified in Figure 2.5.1.a.
2.5.1.b With the OPDMS not functional, the M-Banks shall be positioned greater than or equal to the power-dependent limit specified in Figure 2.5.1.b.
(Note: The same Rlls apply regardless of OPDMS functionality for this cycle).
2.5.1.c The M-Banks shall be considered fully withdrawn from the core when positioned greater than or equal to [
]a,c swd.
Note: ARO positions of [
]a,c through [
]a,c swd may be utilized during rod repositioning without affecting the core safety analysis.
2.5.1.d When the ARO position is [
]a,c swd, the M-Banks shall be operated in sequence as specified in Table 2.5.1.d, and each M-Bank not fully withdrawn from the core shall be operated within the overlap limits specified in Table 2.5.1.d.
2.5.1.e When the ARO position is [
]a,c swd, the M-Banks shall be operated in sequence as specified in Table 2.5.1.e, and each M-Bank not fully withdrawn from the core shall be operated within the overlap limits specified in Table 2.5.1.e.
2.5.1.f When the ARO position is [
]a,c swd, the M-Banks shall be operated in sequence as specified in Table 2.5.1.f, and each M-Bank not fully withdrawn from the core shall be operated within the overlap limits specified in Table 2.5.1.f.
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Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 2.5.1.g When the ARO position is [
]a,c swd, the M-Banks shall be operated in sequence as specified in Table 2.5.1.g, and each M-Bank not fully withdrawn from the core shall be operated within the overlap limits specified in Table 2.5.1.g.
2.5.2 Bank AO Limits 2.5.2.a Bank AO shall be positioned greater than or equal to the power-dependent limit specified in Figure 2.5.2.a.
2.5.2.b Bank AO shall be considered fully withdrawn from the core when positioned greater than or equal to [
]a,c swd.
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Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 SV4-GW-F1-001-NP Revision 0 Figure 2.5.1.a M-Bank Rod Insertion Limits (OPDMS Functional) a,c Page A-13 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 SV4-GW-F1-001-NP Revision 0 Figure 2.5.1.b M-Bank Rod Insertion Limits (OPDMS Not Functional) a,c Page A-14 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.5.1.d M-Bank Sequences and Overlap Settings
[
Ja,csteps ARO a,c SV4-GW-F1-001-NP Revision 0 Page A-15 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.5.1.e M-Bank Sequences and Overlap Settings
[
Ja,c steps ARO ac Table 2.5.1.f M-Bank Sequences and Overlap Settings
[
Ja,c steps ARO ac SV4-GW-F1-001-NP Revision 0 Page A-16 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.5.1.g M-Bank Sequences and Overlap Settings
[
Ja,c steps ARO SV4-GW-F1-001-NP Revision 0 Page A-17 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Figure 2.5.2.a Bank AO Rod Insertion Limits a,c SV4-GW-F1-001-NP Revision 0 Page A-18 of 64
2.6 Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Heat Flux Hot Channel Factor (Fo(Z)) (Constant Axial Offset Control (CAOC) W(Z)
Methodology)
The Fa(Z) limits in MODE 1 with THERMAL POWER ~ 25% RTP and with the OPDMS not functional with respect to LCO 3.2.5 a, b, and care:
2.6.1 Fg(Z) :5 c:o for P > 0.5 Fg(Z) :5 c;~ for P :5 0.5 where: p THERMAL POWER
= RATED THERMAL POWER CFQ = 2.60 where: F~ (Z) represents the measured value of F0 (Z), and is obtained from power distribution measurement results.
F~u (Z) is a factor that accounts for fuel manufacturing tolerances (net effect being a factor of 1.03) and power distribution measurement uncertainty, the latter being dependent on the fraction of inoperable incore detectors and the detector measurement variability at the conditions of the power distribution measurement. Therefore, F~u (Z) is defined at the time of measurement per equations (4) and (5) of Reference 1.
2.6.3 F~ (Z) :5 c:o for P > 0.5 F~ (Z) :5 c;~ for P :5 0.5 W(Z) is a cycle-dependent function that accounts for power distribution transients encountered during normal operation:
2.6.3.a The W(Z) function is dependent on core elevation and core burnup, as well as the assumed power level and M-Bank sequence, as specified in Table 2.6.3.a.
[
]a,c 2.6.3.b A Penalty Factor shall be used to increase the F~ (Z) in accordance with Surveillance Requirement 3.2.1.4 as specified in Table 2.6.3.b.
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Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.6.3.a W(Z) Function [
]a,c Core W(Z) Factors by Core Burnup Elevation (in) 150 2000 5000 8000 16000 0.00 1.496 1.483 1.517 1.540 1.545 2.01 1.496 1.483 1.520 1.543 1.538 4.02 1.486 1.474 1.509 1.532 1.530 6.04 1.479 1.467 1.503 1.524 1.508 8.05 1.456 1.445 1.458 1.466 1.465 10.06 1.443 1.433 1.448 1.457 1.456 12.07 1.418 1.416 1.414 1.415 1.439 14.08 1.400 1.403 1.403 1.397 1.425 16.09 1.389 1.380 1.367 1.356 1.405 18.11 1.372 1.365 1.355 1.344 1.389 20.12 1.353 1.349 1.341 1.330 1.369 22.13 1.317 1.330 1.334 1.317 1.349 24.15 1.275 1.304 1.321 1.300 1.324 26.16 1.257 1.267 1.278 1.283 1.300 28.17 1.241 1.242 1.256 1.267 1.282 30.18 1.224 1.229 1.242 1.251 1.254 32.19 1.214 1.215 1.229 1.237 1.231 34.20 1.203 1.206 1.218 1.224 1.213 36.22 1.191 1.190 1.202 1.208 1.196 38.23 1.179 1.177 1.188 1.193 1.179 40.24 1.167 1.165 1.174 1.178 1.163 42.25 1.159 1.150 1.158 1.163 1.158 44.26 1.161 1.149 1.152 1.156 1.174 46.28 1.169 1.152 1.157 1.165 1.198 48.29 1.182 1.157 1.161 1.171 1.226 50.30 1.197 1.166 1.169 1.180 1.256 52.31 1.212 1.176 1.176 1.189 1.285 54.32 1.228 1.187 1.185 1.199 1.311 56.33 1.244 1.200 1.199 1.215 1.337 58.35 1.259 1.203 1.205 1.224 1.363 60.36 1.275 1.213 1.216 1.238 1.389 62.37 1.297 1.227 1.231 1.254 1.411 64.39 1.319 1.240 1.249 1.277 1.440 66.40 1.337 1.245 1.256 1.285 1.456 68.41 1.352 1.248 1.261 1.292 1.465 70.42 1.364 1.251 1.265 1.298 1.474 72.43 1.373 1.262 1.272 1.302 1.478 74.44 1.375 1.269 1.284 1.315 1.470 SV4-GW-F1-001-NP Revision 0 Page A-20 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.6.3.a W(Z) Function [
]a,c Core W(Z) Factors by Core Burnup Elevation (in) 150 2000 5000 8000 16000 76.46 1.386 1.282 1.297 1.326 1.476 78.47 1.393 1.293 1.311 1.341 1.478 80.48 1.396 1.301 1.324 1.356 1.491 82.49 1.401 1.309 1.334 1.367 1.499 84.50 1.404 1.323 1.346 1.378 1.507 86.52 1.402 1.331 1.353 1.383 1.504 88.53 1.410 1.341 1.360 1.387 1.505 90.54 1.414 1.351 1.364 1.387 1.499 92.55 1.419 1.360 1.366 1.385 1.493 94.56 1.439 1.379 1.370 1.379 1.491 96.57 1.423 1.373 1.366 1.374 1.479 98.59 1.411 1.363 1.361 1.372 1.467 100.60 1.403 1.361 1.359 1.369 1.457 102.61 1.391 1.356 1.353 1.361 1.440 104.62 1.380 1.355 1.348 1.353 1.423 106.64 1.357 1.337 1.335 1.342 1.404 108.65 1.334 1.320 1.321 1.330 1.385 110.66 1.307 1.305 1.308 1.316 1.362 112.67 1.277 1.295 1.308 1.301 1.341 114.68 1.261 1.297 1.316 1.288 1.321 116.70 1.235 1.272 1.292 1.263 1.287 118.71 1.214 1.250 1.271 1.248 1.268 120.72 1.198 1.232 1.252 1.230 1.261 122.73 1.202 1.215 1.220 1.207 1.252 124.74 1.221 1.228 1.221 1.192 1.244 126.76 1.221 1.219 1.208 1.190 1.231 128.77 1.229 1.217 1.203 1.196 1.219 130.78 1.213 1.213 1.210 1.206 1.211 132.79 1.194 1.216 1.230 1.216 1.201 134.80 1.188 1.206 1.223 1.225 1.208 136.81 1.204 1.214 1.230 1.240 1.229 138.83 1.217 1.226 1.239 1.247 1.240 140.84 1.236 1.244 1.252 1.256 1.254 142.85 1.253 1.262 1.267 1.263 1.269 144.86 1.273 1.280 1.282 1.272 1.282 146.88 1.294 1.304 1.304 1.283 1.295 148.89 1.319 1.328 1.324 1.297 1.317 150.90 1.344 1.353 1.348 1.315 1.353 SV4-GW-F1-001-NP Revision 0 Page A-21 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Table 2.6.3.a W(Z) Function [
]a,c Core W(Z) Factors by Core Burnup Elevation (in) 150 2000 5000 8000 16000 152.91 1.383 1.391 1.384 1.354 1.377 154.92 1.427 1.425 1.415 1.394 1.413 156.94 1.466 1.446 1.430 1.425 1.458 158.95 1.475 1.463 1.445 1.430 1.479 160.96 1.495 1.488 1.479 1.473 1.515 162.97 1.466 1.472 1.480 1.485 1.539 164.98 1.477 1.484 1.493 1.499 1.558 167.00 1.496 1.495 1.498 1.507 1.569 169.01 1.509 1.508 1.509 1.512 1.575 Notes:
The W(Z) values are unit-less and the core burnup values are in units of MWD/MTU.
. [
The top and bottom 8% of the core (inclusive) are excluded from the F~ (Z) evaluation because of the difficulty of making a precise measurement in these regions and because of the low probability that these regions would be more limiting than the safety analyses.
Table 2.6.3.b F~ (Z) Penalty Factors Burnup Fi(z)
(MWD/MTU)
Penalty Factor 0
1.02 18662 1.02 SV4-GW-F1-001-NP Revision 0 Page A-22 of 64
2.7 Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Nuclear Enthalpy Rise Hot Channel Factor (F~H)
The F~H limits in MODE 1 with THERMAL POWER ~ 25% RTP and with the OPDMS not functional with respect to LCO 3.2.5 a, b, and care:
2.7.1 F~H= F~~P * (1 + PFtiH * (1 - P))
where: p THERMAL POWER
= RATED THERMAL POWER PF tiH = 0.3 2.8 AXIAL FLUX DIFFERENCE (AFD) (Constant Axial Offset Control (CAOC)
Methodology)
The AFD limits in MODE 1 with THERMAL POWER > 15% RTP and with the OPDMS not functional with respect to LCO 3.2.5 a, b, and care:
2.8.1 The AFD shall be maintained within the target band of [
the target flux difference.
]a,c AFD about 2.8.2 The AFD may deviate outside the target band with THERMAL POWER < 90%
RTP but~ 50% RTP, provided AFD is within the acceptable operation limits specified in Figure 2.8.2.
SV4-GW-F1-001-NP Revision 0 Page A-23 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 Figure 2.8.2 Axial Flux Difference Acceptable Operation Limits
_a,c SV4-GW-F1-001-NP Revision 0 Page A-24 of 64
2.9 Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 On-Line Power Distribution Monitoring System (OPDMS)-Monitored Parameters (LCO 3.2.5) 2.9.1 The Peak Linear Heat Rate (PLHR) shall not exceed [
]a,c as confirmed by Minimum Power Margin (MPM) > 0.0%, in MODE 1 with THERMAL POWER ~ 25% RTP and with the OPDMS functional.
Note: The PLHR limit presented here is based on the hot fuel height.
2.9.2 The Nuclear Enthalpy Rise Hot Channel Factor (F~H) shall not exceed its limits, as confirmed by MPM > 0.0%, in MODE 1 with THERMAL POWER
~ 25% RTP and with the OPDMS functional. The F~H limits are:
F~H= F~~P * (1 + PFtiH * (1 - P))
where: p THERMAL POWER
= RATED THERMAL POWER PF tiH = 0.3 2.9.3 The Departure from Nucleate Boiling Ratio (DNBR) shall be maintained greater than or equal to [
]a,c as confirmed by MPM > 0.0%, in MODE 1 with THERMAL POWER ~ 25% RTP and with the OPDMS functional.
2.9.4 The SHUTDOWN MARGIN (SOM) shall be greater than or equal 1.6%.b.k/k, as confirmed by Excess Shutdown Margin > 0.0 ppm RCS boron concentration, in MODE 1 with the OPDMS functional and in MODE 2 with kett ~ 1.0 with the OPDMS functional.
SV4-GW-F1-001-NP Revision 0 Page A-25 of 64
Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1 2.10 RCS Pressure, Temperature, and Flow Departure from Nucleate Boiling (DNB)
Limits (LCO 3.4.1)
The RCS DNB parameter limits are:
2.10.1 The Pressurizer Pressure shall be maintained greater than or equal to
[
]a,c in MODE 1.
2.10.2 The RCS Average Temperature (Tav9) shall be maintained less than or equal to
[
]a,c in MODE 1.
2.10.3 The RCS total flow rate shall be maintained greater than or equal to 301,670 gpm in MODE 1.
2.11 Boron Concentration (LCO 3.9.1)
The limit in MODE 6 for the boron concentration of the RCS, the fuel transfer canal (when connected to the RCS), and the refueling cavity (when connected to the RCS) is:
2.11.1 The boron concentration shall be maintained greater than or equal to
[
]a,c Note: The limit bounds the BOL condition of kett::; 0.95 (all Rod Control Cluster Assemblies inserted, all Gray Rod Control Assemblies withdrawn) and subcriticality (all rods withdrawn) over the entire cycle. This limit includes additional boron to address uncertainties and B10 depletion.
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Westinghouse Non-Proprietary Class 3 CORE OPERATING LIMITS REPORT FOR VOGTLE UNIT 4 CYCLE 1
3.0 REFERENCES
- 1. WCAP-12472-P-A, BEACON' Core Monitoring and Operations Support System, Addendum 1, May 1996 (Westinghouse Proprietary).
BEACON is a trademark or registered trademark of Westinghouse Electric Company LLC, its Affiliates and/or its Subsidiaries in the United States of America and may be registered in other countries throughout the world. All rights reserved. Unauthorized use is strictly prohibited. Other names may be trademarks of their respective owners.
SV4-GW-F1-001-NP Revision 0 Page A-27 of 64
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