RC-18-0144, (Vcsns), Unit 1 - Core Operating Limits Report (COLR) for Cycle 25

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(Vcsns), Unit 1 - Core Operating Limits Report (COLR) for Cycle 25
ML18324A733
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 11/20/2018
From: Lippard G A
South Carolina Electric & Gas Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
LTD 320, RC-18-0144, RR 5000
Download: ML18324A733 (27)
v • d • e


Text

A SCANA COMPANY George A. Lippard Vice President, Nuclear Operations 803.345.4810 November 20, 2018 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555

Dear Sir / Madam:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION (VCSNS), UNIT 1 DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 25 In accordance with Section 6.9.1.11 of the Virgil C. Summer Nuclear Station Technical Specifications, South Carolina Electric & Gas Company, acting for itself and as an agent for South Carolina Public Service Authority, hereby submits the Core Operating Limits Report for Cycle 25. Should you have any questions, please call Michael S. Moore at (803) 345-4752.

TS/GAL/bb

Attachment:

Virgil C. Summer Nuclear Station Unit 1 Core Operating Limits Report for Cycle 25, Revision 0 c: Without Attachment unless noted J. E. Addison S. A. Williams (w/attachment)

W. K. Kissam S. E. Jenkins J. B. Archie NRC Resident Inspector (w/attachment)

J. FL Hamilton NSRC G. J. Lindamood RTS (LTD 320) W. M. Cherry File (RR 5000) K.M.Sutton DMS (RC-18-0144)

C. Haney (w/attachment)

Very truly yours, GeorgB A. Lippard V. C. Summer Nuclear Station

  • P. 0. Box 88
  • 29065
  • F (803) 941-9776
  • www.sceg.com SOUTH CAROLINA ELECTRIC & GAS COMPANY VIRGIL C. SUMMER NUCLEAR STATION UNIT 1 CORE OPERATING LIMITS REPORT FOR CYCLE 25 REVISION 0 OCTOBER 2018 LIST OF EFFECTIVE PAGES PAGE i ii iii 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 REVISION o o 0 0 0 0

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Table of Contents Section Page 1.0 Core Operating Limits Report 1 2.0 Operating Limits 2 2.1 Moderator Temperature Coefficient (Specification 3.1.1.3) 2 2.2 Shutdown Rod Insertion Limits (Specification 3.1.3.5) 2 2.3 Control Rod Insertion Limits (Specification 3.1.3.6) 3 2.4 Axial Flux Difference (Specification 3.2.1) 3 2.5 Heat Flux Hot Channel Factor - F Q(z) (Specification 3.2.2) 3 2.6 RCS Flow Rate and Nuclear Enthalpy Rise Hot Channel Factor - (Specification 3.2.3) 4 2.7 Power Distribution Measurement Uncertainty (Specifications 3.2.2 and 3.2.3) 5 3.0 References 6 i Revision 0 Page 12 13 14 15 16 17 18 19 20 List of Tables RAOC W(z) at 150, 3000, 5000, 8000 MWD/MTU V. C. Summer - Cycle 25 RAOC W(z) at 10000,14000, 20000 MWD/MTU V. C. Summer - Cycle 25 RAOC F q Margin Decrease in Excess of 2% Per 31 EFPD - Cycle 25 Alternate RAOC W(z) at 150, 3000, 5000, 8000 MWD/MTU V. C. Summer - Cycle 25 Alternate RAOC W(z) at 10000,14000, 20000 MWD/MTU V. C. Summer - Cycle 25 Alternate RAOC F q Margin Decrease in Excess of 2% Per 31 EFPD - Cycle 25 BASELOAD W(z) at 150, 3000, 5000, 8000 MWD/MTU V. C. Summer - Cycle 25 BASELOAD W(z) at 10000,14000, 20000 MWD/MTU V. C. Summer - Cycle 25 BASELOAD F Q Margin Decrease in Excess of 2% Per 31 EFPD - Cycle 25 ii List of Figures Figure Figure 1. Figure 2. Figure 3. Figure 4. Figure 5.

Figure 6. Moderator Temperature Coefficient Versus Power Level V. C. Summer - Cycle 25 Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 25 Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 25 K(z) - Normalized FQ(Z) as a Function of Core Height V. C. Summer - Cycle 25 Axial Flux Difference Limits as a Function of Rated Thermal Power (Alternate RAOC) V. C. Summer - Cycle 25 RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 25 Page 10 11 21 iii Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 1.0 Core Operating Limits Report This Core Operating Limits Report (COLR) for V. C. Summer Station Cycle 25 has been prepared in accordance with the requirements of Technical Specification 6.9.1.11.

The Technical Specifications affected by this report are listed below: 3.1.1.3 Moderator Temperature Coefficient 3.1.3.5 Shutdown Rod Insertion Limits 3.1.3.6 Control Rod Insertion Limits 3.2.1 Axial Flux Difference 3.2.2 Heat Flux Hot Channel Factor - FQ(Z) 3.2.3 RCS Flow Rate and Nuclear Enthalpy Rise Hot Channel Factor 3.3.3.11 Power Distribution Monitoring System (PDMS) 1 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 2.0 Operating Limits The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the subsections which follow. These limits have been developed using the NRC-approved methodologies specified in Technical Specification 6.9.1.11.

2.1 Moderator Temperature Coefficient (Specification 3.1.1.3):

2.1.1 The Moderator Temperature Coefficient (MTC) limits are: The BOL/ARO-MTC shall be less positive than the limits shown in Figure 1. The EOL/ARO/RTP-MTC shall be less negative than -4.8x10" 4 Ak/k/°F (-48 pcm/°F). where: BOL stands for Beginning of Cycle Life ARO stands for All Rods Out RTP stands for RATED THERMAL POWER EOL stands for End of Cycle Life 2.1.2 The MTC Surveillance limit is: The 300 ppm/ARO/RTP-MTC should be less negative than or equal to -4.1xl0" 4 Ak/k/°F (-41 pcm/°F). 2.1.3 The Revised Predicted near-EOL 300 ppm MTC shall be calculated using the following algorithm from Reference 2: Revised Predicted MTC = Predicted MTC + AFD Correction*+

Predictive Correction**

  • AFD Correction is 0.05 pcm/°F/%AAFD.
    • Predictive Correction is -3 pcm/°F. If the Revised Predicted MTC is less negative than the SR 4.1.1.3b limit of -4.1xl0" 4 Ak/k/°F, and all of the benchmark data contained in the surveillance procedure are met, then an MTC measurement in accordance with SR 4.1.1.3b is not required.

2.2 Shutdown Rod Insertion Limits (Specification 3.1.3.5):

The shutdown rods shall be withdrawn to at least 228 steps. 2 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 2.3 Control Rod Insertion Limits (Specification 3.1.3.6):

Control Bank A and B rods shall be withdrawn to at least 228 steps. Control Bank C and D Rod Insertion Limits are specified by Figure 2. Control rod overlap is 100 steps.

2.4 Axial Flux Difference (Specification 3.2.1): 2.4.1 The Axial Flux Difference (AFD) Limits for Relaxed Axial Offset Control (RAOC) operation for Cycle 25 are shown in Figure 3. 2.4.2 The Axial Flux Difference (AFD) target band during base load operations for Cycle 25 is: BOL - EOL (0 - 23,000 MWD/MTU):

+5% about a measured target value. The base load band will remain inside the RAOC band. 2.4.3 The Axial Flux Difference (AFD) Limits for Alternate Relaxed Axial Offset Control (RAOC) operation for Cycle 25 are shown in Figure 5. 2.4.4 The minimum allowable power level for base load operation, APL ND , is 75% of RATED THERMAL POWER. 2.5 Heat Flux Hot Channel Factor - FQ(Z) (Specification 3.2.2): P RTP F q (Z) < x K(Z) for P > 0.5 ^ F q TP t_,_ _ Thermal Power F n (Z) < x K(Z) forP < 0.5 where: P = 0.5 Rated Thermal Power 2.5.1 F*TP =2.45 2.5.2 K(z) is provided in Figure 4. 2.5.3 Elevation dependent W(z) values for RAOC operation at 150, 3000, 5000, 8000, 10000, 14000 and 20000 MWD/MTU are shown in Tables 1 through 2, respectively. This information is sufficient to determine W(z) versus core height in the range of 0 MWD/MTU to EOL burnup through the use of three point interpolation.

Table 3 shows 3 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 FQ margin decreases for RAOC operation that are greater than 2% per 31 Effective Full Power Days (EFPD). These values shall be used to increase FQ M (Z) as per Surveillance Requirement 4.2.2.2.e.

A 2% penalty factor shall be used at all burnups that are outside the range of Table 3. 2.5.4 Elevation dependent W(z) values for Alternate RAOC operation at 150, 3000, 5000, 8000, 10000, 14000 and 20000 MWD/MTU are shown in Tables 4 through 5, respectively.

This information is sufficient to determine W(z) versus core height in the range of 0 MWD/MTU to EOL bumup through the use of three point interpolation.

Table 6 shows FQ margin decreases for RAOC operation that are greater than 2% per 31 Effective Full Power Days (EFPD). These values shall be used to increase FQ M (Z) as per Surveillance Requirement 4.2.2.2.e.

A 2% penalty factor shall be used at all burnups that are outside the range of Table 6. 2.5.5 Elevation dependent W(Z)B L values for Baseload operation between 75 and 100% of rated thermal power with the Section 2.4.2 specified target band about a measured target value at 150, 3000, 5000, 8000, 10000, 14000 and 20000 MWD/MTU are shown in Tables 7 through 8, respectively. This information is sufficient to determine W(z)BL versus core height for burnups in the range of 0 MWD/MTU to EOL burnup through the use of three point interpolation.

Table 9 shows FQ margin decreases for base load operation that are greater than 2% per 31 Effective Full Power Days (EFPD). These values shall be used to increase FQ M (Z) as per Surveillance Requirement 4.2.2.4.e.

A 2% penalty factor shall be used at all burnups that are outside the range of Table 9. 2.6 RCS Flow Rate and Nuclear Enthalpy Rise Hot Channel Factor - F^ (Specification 3.2.3): R = El where. p _ Thermal Power EST x (l + PF^j x (l - P)) Rated Thermal Power 2.6.1 F?h P =1-62 2.6.2 PF^ = 0.3 2.6.3 The Acceptable Operation Region from the combination of Reactor Coolant System total flow and R is provided in Figure 6. 4 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 2.7 Power Distribution Measurement Uncertainty (Specifications 3.2.2 and 3.2.3): If the Power Distribution Monitoring System (PDMS) is OPERABLE, as defined in Technical Specification 3.3.3.11, the uncertainty, U FA H, to be applied to the Nuclear Enthalpy Rise Hot Channel Factor F N ah shall be calculated by the following formula: U =1.0+ Uah rAH 100.0 where: U AH = Uncertainty for enthalpy rise as defined in equation (5-19) in Reference 1 or 4.0, whichever is larger. If the Power Distribution Monitoring System is OPERABLE, as defined in Technical Specification 3.3.3.11, the uncertainty, U FQ , to be applied to the Heat Flux Hot Channel Factor F Q (Z) shall be calculated by the following formula: U FQ u, 1.0 + 100.0 u where: U Q = Uncertainty for FQ(Z) = 5.0 when confirming FQ(Z) for RAOC or Base Load operation, or as defined in equation (5-19) in Reference 1 for all other purposes.

U e = Engineering uncertainty factor. = 1.03 If the Power Distribution Monitoring System is INOPERABLE, as defined in Technical Specification 3.3.3.11, the uncertainty, U FAH , to be applied to the Nuclear Enthalpy Rise Hot Channel Factor F N AH shall be calculated by the following formula: U FA H = U FAHm 5 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 where: U FAHM = Base F A H measurement uncertainty.

= 1.04 If the Power Distribution Monitoring System is INOPERABLE, as defined in Technical Specification 3.3.3.11, the uncertainty, U F Q, to be applied to the Heat Flux Hot Channel Factor F Q (Z) shall be calculated by the following formula:

= 1.03 3.0 References The analytical methods used to determine the core operating limits shall be those previously reviewed and approved by the NRC. These methods are listed in Technical Specification Section 1) WCAP-12472-P-A, "BEACON Core Monitoring and Operations Support System," August, 1994, (W Proprietary)

WCAP-12472-P-A, Addendum 1-A, "BEACON Core Monitoring and Operations Support System," January 2000, (W Proprietary).

2) WCAP-13749-P-A, "Safety Evaluation Supporting the Conditional Exemption of the Most Negative EOL Moderator Temperature Coefficient," March 1997, (W Proprietary).

u FQ = u, n-u e where: U QU = Base FQ measurement uncertainty.

= 1.05 U e = Engineering uncertainty factor. 6.9.1.11.

6 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Figure 1. Moderator Temperature Coefficient Versus Power Level V. C. Summer - Cycle 25 I I I I I I I I 1 1 1 1 1 I 1 i l l 1 1 l l l l 1 1 I 1 I 1 1 1 1 1 1 1 1 i 1 1 Unac Opet ;ceptab *ation e Acce Oper ptable ation I I I I 111! i i i i till i i i i i i i i i i i i i r i i i i i i IIII" 0.00 0 10 20 30 40 50 60 70 80 90 100 Percent of Rated Thermal Power Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Figure 2. Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 25 >> 1 1 1 1 1 1 II 1 1 1 1

  • F (0.54, 228)

(0.54, 228) (1.0, 194)

(1.0, 194) BANK C (0.0, 118) BANK D (0.048, 0)

(0.048, 0) 1 1 1 1 1 I 1 I 1 I I 1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Fraction Of Rated Thermal Power 0.9 1.0 8 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Figure 3. Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 25 120 (-8, 100) (+8 , 100 ) Unacceptable Unacceptable Acceptable

(-25 >, 50] ( +20, 50) 100 80 60 40 20 30 10 0 10 Axial Flux Difference

(% AL) 20 30 40 9 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Figure 4. K(z) - Normalized FQ(Z) as a Function of Core Height V. C. Summer - Cycle 25 I I ] (0. 0,1 *0) (* 5.0, 1.C )) (12.0, 0.925) " 0 2 Bottom 4 6 8 Core Height (Feet) 10 12 Top 10 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Figure 5. Axial Flux Difference Limit as a Function of Rated Thermal Power (Alternate RAOC) V. C. Summer - Cycle 25 120 (-6, 100) (+4, 100) 11 nar.n ->lp >> i Acce ptabl e I /on n i- V \

  • i \j, 100 80 60 40 20 30 10 0 10 Axial Flux Difference

(% Al) 20 30 40 11 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 1. RAOC W(z) at 150,3000,5000, 8000 MWD/MTU V. C. Summer - Cycle 25 Core Height (ft) W(z) W(z) W(z) W(z) Core Height (ft) W(z) W(z) W(z) W(z) Core Height (ft) 150 3000 5000 8000 Core Height (ft) 150 3000 5000 8000 Core Height (ft) MWd/ MWd / MWd/ MWd/ Core Height (ft) MWd/ MWd/ MWd/ MWd/ Core Height (ft) MTU MTU MTU MTU Core Height (ft) MTU MTU MTU MTU 0.000 1.333 1.454 1.393 1.263 6.140 1.136 1.113 1.106 1.114 0.140 1.335 1.455 1.395 1.264 6.279 1.142 1.118 1.110 1.123 0.279 1.337 1.456 1.396 1.266 6.419 1.147 1.122 1.116 1.132 0.419 1.346 1.462 1.401 1.272 6.558 1.152 1.126 1.122 1.140 0.558 1.360 1.472 1.411 1.284 6.698 1.156 1.130 1.127 1.148 0.698 1.362 1.470 1.409 1.285 6.837 1.160 1.133 1.132 1.155 0.837 1.355 1.461 1.401 1.279 6.977 1.163 1.136 1.136 1.162 0.977 1.347 1.450 1.391 1.273 7.116 1.166 1.138 1.140 1.168 1.116 1.338 1.437 1.380 1.265 7.256 1.168 1.139 1.143 1.174 1.256 1.328 1.422 1.366 1.255 7.395 1.170 1.141 1.146 1.179 1.395 1.316 1.406 1.351 1.244 7.535 1.171 1.141 1.148 1.182 1.535 1.303 1.388 1.335 1.232 7.674 1.171 1.140 1.149 1.185 1.674 1.289 1.370 1.318 1.220 7.814 1.170 1.140 1.150 1.188 1.814 1.275 1.350 1.299 1.206 7.953 1.169 1.138 1.151 1.190 1.953 1.260 1.329 1.281 1.193 8.093 1.167 1.136 1.150 1.190 2.093 1.245 1.308 1.261 1.179 8.233 1.164 1.133 1.149 1.191 2.233 1.229 1.287 1.241 1.165 8.372 1.160 1.130 1.147 1.190 2.372 1.213 1.266 1.222 1.150 8.512 1.156 1.126 1.145 1.189 2.512 1.198 1.245 1.203 1.137 8.651 1.151 1.122 1.142 1.186 2.651 1.182 1.225 1.184 1.124 8.791 1.145 1.120 1.140 1.185 2.791 1.168 1.204 1.165 1.110 8.930 1.138 1.119 1.140 1.186 2.930 1.158 1.183 1.147 1.098 9.070 1.131 1.117 1.139 1.190 3.070 1.148 1.173 1.139 1.090 9.209 1.127 1.113 1.135 1.192 3.209 1.142 1.169 1.137 1.087 9.349 1.127 1.113 1.136 1.193 3.349 1.138 1.164 1.134 1.087 9.488 1.129 1.118 1.142 1.194 3.488 1.135 1.159 1.130 1.087 9.628 1.130 1.124 1.149 1.194 3.628 1.130 1.154 1.127 1.087 9.767 1.129 1.129 1.155 1.200 3.767 1.126 1.149 1.123 1.087 9.907 1.129 1.134 1.162 1.208 3.907 1.124 1.143 1.119 1.087 10.046 1.127 1.139 1.168 1.215 4.046 1.122 1.137 1.115 1.087 10.186 1.127 1.143 1.174 1.222 4.186 1.120 1.131 1.111 1.086 10.326 1.131 1.147 1.179 1.228 4.326 1.118 1.125 1.107 1.086 10.465 1.135 1.150 1.183 1.233 4.465 1.115 1.121 1.105 1.085 10.605 1.139 1.152 1.186 1.236 4.605 1.113 1.118 1.104 1.085 10.744 1.142 1.153 1.188 1.239 4.744 1.112 1.114 1.101 1.084 10.884 1.144 1.153 1.188 1.240 4.884 1.111 1.111 1.099 1.084 11.023 1.146 1.151 1.187 1.239 5.023 1.111 1.107 1.097 1.083 11.163 1.146 1.149 1.185 1.238 5.163 1.110 1.104 1.095 1.083 11.302 1.146 1.144 1.181 1.233 5.302 1.109 1.099 1.092 1.084 11.442 1.143 1.138 1.170 1.224 5.442 1.110 1.095 1.089 1.085 11.581 1.126 1.123 1.152 1.208 5.581 1.111 1.095 1.089 1.086 11.721 1.106 1.106 1.134 1.191 5.721 1.116 1.098 1.091 1.089 11.860 1.088 1.089 1.117 1.174 5.860 1.124 1.103 1.096 1.095 12.000 1.068 1.070 1.098 1.154 6.000 1.130 1.108 1.101 1.105 l 12 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 2. RAOC W(z) at 10000,14000,20000 MWD/MTU V. C. Summer - Cycle 25 Core Height (ft) W(z) W(z) W(z) Core Height (ft) W(z) W(z) W(z) Core Height (ft) 10000 14000 20000 Core Height (ft) 10000 14000 20000 Core Height (ft) MWd/ MWd/ MWd/ Core Height (ft) MWd/ MWd/ MWd/ Core Height (ft) MTU MTU MTU Core Height (ft) MTU MTU MTU 0.000 1.226 1.174 1.183 6.140 1.125 1.145 1.192 0.140 1.228 1.177 1.185 6.279 1.135 1.153 1.199 0.279 1.230 1.179 1.188 6.419 1.145 1.161 1.205 0.419 1.237 1.187 1.196 6.558 1.154 1.169 1.211 0.558 1.249 1.202 1.211 6.698 1.162 1.176 1.215 0.698 1.251 1.206 1.216 6.837 1.170 1.182 1.219 0.837 1.247 1.203 1.213 6.977 1.178 1.187 1.222 0.977 1.242 1.200 1.210 7.116 1.184 1.191 1.223 1.116 1.235 1.195 1.204 7.256 1.191 1.196 1.225 1.256 1.226 1.189 1.197 7.395 1.197 1.200 1.225 1.395 1.217 1.181 1.189 7.535 1.200 1.201 1.223 1.535 1.206 1.173 1.181 7.674 1.203 1.202 1.220 1.674 1.195 1.165 1.172 7.814 1.206 1.202 1.217 1.814 1.183 1.155 1.162 7.953 1.208 1.201 1.212 1.953 1.171 1.146 1.153 8.093 1.209 1.200 1.207 2.093 1.159 1.137 1.143 8.233 1.209 1.198 1.201 2.233 1.146 1.127 1.133 8.372 1.208 1.195 1.195 2.372 1.133 1.117 1.121 8.512 1.206 1.191 1.195 2.512 1.120 1.107 1.111 8.651 1.203 1.187 1.197 2.651 1.108 1.097 1.099 8.791 1.202 1.188 1.198 2.791 1.096 1.087 1.089 8.930 1.202 1.193 1.198 2.930 1.085 1.078 1.083 9.070 1.208 1.199 1.198 3.070 1.082 1.076 1.081 9.209 1.213 1.202 1.195 3.209 1.081 1.077 1.081 9.349 1.216 1.205 1.191 3.349 1.080 1.078 1.085 9.488 1.219 1.208 1.186 3.488 1.079 1.079 1.091 9.628 1.221 1.210 1.180 3.628 1.078 1.080 1.098 9.767 1.221 1.213 1.179 3.767 1.077 1.081 1.105 9.907 1.221 1.219 1.180 3.907 1.076 1.082 1.112 10.046 1.226 1.226 1.182 4.046 1.074 1.082 1.118 10.186 1.232 1.232 1.187 4.186 1.072 1.082 1.124 10.326 1.238 1.238 1.192 4.326 1.071 1.083 1.129 10.465 1.242 1.243 1.196 4.465 1.073 1.085 1.134 10.605 1.245 1.247 1.200 4.605 1.075 1.088 1.139 10.744 1.248 1.252 1.203 4.744 1.077 1.091 1.143 10.884 1.248 1.255 1.206 4.884 1.078 1.094 1.147 11.023 1.247 1.255 1.206 5.023 1.080 1.097 1.151 11.163 1.245 1.255 1.205 5.163 1.082 1.100 1.154 11.302 1.240 1.254 1.202 5.302 1.084 1.102 1.156 11.442 1.233 1.250 1.198 5.442 1.085 1.104 1.157 11.581 1.217 1.233 1.178 5.581 1.087 1.109 1.160 11.721 1.200 1.213 1.157 5.721 1.094 1.117 1.166 11.860 1.182 1.194 1.137 5.860 1.105 1.127 1.176 12.000 1.161 1.172 1.114 6.000 1.115 1.136 1.184 j j 13 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 3. RAOC FQ Margin Decrease in Excess of 2% Per 31 EFPD V. C. Summer - Cycle 25 Cycle Burnup (MWD/MTU)

Maximum Decrease in FQ Margin 666 1.0200 837 1.0267 1009 1.0299 1181 1.0282 1353 1.0263 1525 1.0255 1697 1.0249 1868 1.0249 2040 1.0256 2212 1.0270 2384 1.0286 2556 1.0300 2728 1.0309 2899 1.0310 3071 1.0302 3243 1.0286 3415 1.0264 3587 1.0239 3759 1.0208 3930 1.0200 Note: All cycle burnups outside the range of this table shall use a 1.020 decrease in margin for compliance with Specification 4.2.2.2e.

Linear interpolation is adequate for intermediate cycle burnups. 14 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 4. Alternate RAOC W(z) at 150, 3000, 5000, 8000 MWD/MTU V. C. Summer - Cycle 25 Core Height (ft) W(z) W(z)

W(z) W(z) Core W(z) W(z) W(z) W(z)

Core Height (ft) 150 3000 5000 8000 Height (ft) 150 3000 5000 8000 Core Height (ft) MWd/ MWd/ MWd/

MWd/ Height (ft) MWd / MWd/ MWd/ MWd/ Core Height (ft) MTU MTU MTU MTU Height (ft) MTU MTU MTU MTU 0.000 1.268 1.387 1.357 1.238 6.140 1.122 1.103 1.101 1.104 0.140 1.270 1.389 1.359 1.240 6.279 1.124 1.104 1.103 1.109 0.279 1.272 1.390 1.360 1.242 6.419 1.126 1.105 1.106 1.113 0.419 1.281 1.396 1.365 1.249 6.558 1.128 1.106 1.108 1.118 0.558 1.295 1.406 1.375 1.260 6.698 1.129 1.106 1.110 1.122 0.698 1.298 1.405 1.374 1.261 6.837 1.130 1.106 1.111 1.126 0.837 1.292 1.397 1.366 1.256 6.977 1.130 1.106 1.112 1.129 0.977 1.285 1.387 1.357 1.250 7.116 1.130 1.105 1.113 1.132 1.116 1.277 1.375 1.346 1.242 7.256 1.129 1.104 1.113 1.134 1.256 1.268 1.362 1.333 1.232 7.395 1.128 1.103 1.113 1.136 1.395 1.257 1.347 1.319 1.221 7.535 1.126 1.100 1.111 1.137 1.535 1.246 1.331 1.304 1.210 7.674 1.124 1.098 1.110 1.137 1.674 1.234 1.314 1.287 1.197 7.814 1.121 1.094 1.108 1.137 1.814 1.222 1.296 1.270 1.184 7.953 1.118 1.091 1.105 1.136 1.953 1.208 1.277 1.252 1.170 8.093 1.113 1.087 1.102 1.134 2.093 1.195 1.258 1.234 1.157 8.233 1.109 1.082 1.099 1.132 2.233 1.181 1.238 1.215 1.142 8.372 1.104 1.077 1.095 1.130 2.372 1.167 1.219 1.197 1.128 8.512 1.098 1.072 1.091 1.127 2.512 1.154 1.201 1.179 1.115 8.651 1.091 1.066 1.085 1.123 2.651 1.140 1.182 1.161 1.101 8.791 1.086 1.063 1.083 1.118 2.791 1.129 1.164 1.143 1.088 8.930 1.084 1.062 1.083 1.115 2.930 1.126 1.148 1.126 1.078 9.070 1.083 1.064 1.086 1.121 3.070 1.123 1.144 1.120 1.076 9.209 1.082 1.066 1.089 1.125 3.209 1.120 1.143 1.119 1.076 9.349 1.080 1.068 1.092 1.129 3.349 1.117 1.140 1.117 1.075 9.488 1.078 1.069 1.095 1.133 3.488 1.114 1.138 1.116 1.074 9.628 1.079 1.070 1.097 1.136 3.628 1.111 1.136 1.115 1.073 9.767 1.082 1.073 1.098 1.139 3.767 1.109 1.133 1.113 1.072 9.907 1.084 1.079 1.100 1.141 3.907 1.110 1.130 1.112 1.071 10.046 1.087 1.084 1.106 1.143 4.046 1.111 1.127 1.110 1.071 10.186 1.089 1.089 1.112 1.145 4.186 1.111 1.124 1.107 1.072 10.326 1.093 1.094 1.117 1.148 4.326 1.112 1.121 1.105 1.074 10.465 1.097 1.099 1.122 1.150 4.465 1.112 1.117 1.103 1.075 10.605 1.100 1.102 1.127 1.154 4.605 1.112 1.113 1.100 1.077 10.744 1.103 1.106 1.131 1.158 4.744 1.112 1.109 1.097 1.079 10.884 1.105 1.109 1.134 1.161 4.884 1.111 1.105 1.094 1.080 11.023 1.106 1.110 1.136 1.163 5.023 1.111 1.101 1.091 1.082 11.163 1.107 1.111 1.137 1.163 5.163 1.110 1.096 1.088 1.083 11.302 1.106 1.111 1.137 1.162 5.302 1.109 1.093 1.086 1.084 11.442 1.104 1.108 1.135 1.159 5.442 1.110 1.094 1.086 1.085 11.581 1.087 1.095 1.121 1.145 5.581 1.111 1.095 1.088 1.086 11.721 1.068 1.079 1.105 1.129 5.721 1.114 1.097 1.091 1.088 11.860 1.051 1.064 1.089 1.112 5.860 1.116 1.099 1.094 1.092 12.000 1.031 1.046 1.070 1.092 6.000 1.119 1.101 1.098 1.098 15 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 5. Alternate RAOC W(z) at 10000,14000,20000 MWD/MTU V. C. Summer - Cycle 25 Core Height (ft) W(z) W(z) W(z) Core Height (ft) W(z) W(z) W(z) Core Height (ft) 10000 14000 20000 Core Height (ft) 10000 14000 20000 Core Height (ft) MWd/ MWd/ MWd/ Core Height (ft) MWd/ MWd/ MWd/ Core Height (ft) MTU MTU MTU Core Height (ft) MTU MTU MTU 0.000 1.167 1.146 1.183 6.140 1.110 1.134 1.181 0.140 1.169 1.149 1.185 6.279 1.116 1.140 1.185 0.279 1.171 1.151 1.188 6.419 1.122 1.146 1.189 0.419 1.179 1.160 1.196 6.558 1.127 1.151 1.192 0.558 1.191 1.174 1.211 6.698 1.131 1.156 1.195 0.698 1.193 1.178 1.216 6.837 1.136 1.160 1.196 0.837 1.190 1.176 1.213 6.977 1.139 1.163 1.197 0.977 1.185 1.173 1.210 7.116 1.142 1.166 1.196 1.116 1.179 1.169 1.204 7.256 1.145 1.169 1.196 1.256 1.172 1.162 1.197 7.395 1.148 1.171 1.194 1.395 1.163 1.155 1.189 7.535 1.149 1.170 1.190 1.535 1.154 1.148 1.181 7.674 1.149 1.170 1.186 1.674 1.144 1.140 1.172 7.814 1.149 1.169 1.181 1.814 1.133 1.131 1.162 7.953 1.148 1.168 1.175 1.953 1.122 1.122 1.153 8.093 1.147 1.165 1.168 2.093 1.111 1.114 1.143 8.233 1.145 1.162 1.161 2.233 1.100 1.104 1.133 8.372 1.142 1.158 1.154 2.372 1.088 1.094 1.121 8.512 1.139 1.154 1.150 2.512 1.079 1.085 1.110 8.651 1.135 1.148 1.150 2.651 1.071 1.076 1.100 8.791 1.129 1.147 1.150 2.791 1.062 1.067 1.089 8.930 1.126 1.148 1.149 2.930 1.054 1.060 1.079 9.070 1.132 1.149 1.148 3.070 1.052 1.059 1.067 9.209 1.139 1.148 1.145 3.209 1.053 1.061 1.064 9.349 1.145 1.146 1.139 3.349 1.055 1.062 1.068 9.488 1.151 1.145 1.135 3.488 1.057 1.064 1.073 9.628 1.157 1.148 1.135 3.628 1.059 1.065 1.079 9.767 1.163 1.153 1.137 3.767 1.062 1.067 1.084 9.907 1.169 1.160 1.141 3.907 1.065 1.071 1.090 10.046 1.174 1.165 1.144 4.046 1.067 1.074 1.094 10.186 1.179 1.170 1.147 4.186 1.068 1.078 1.099 10.326 1.183 1.175 1.153 4.326 1.071 1.081 1.106 10.465 1.187 1.178 1.158 4.465 1.073 1.085 1.114 10.605 1.189 1.181 1.161 4.605 1.075 1.088 1.121 10.744 1.191 1.183 1.166 4.744 1.077 1.091 1.128 10.884 1.190 1.183 1.169 4.884 1.078 1.094 1.134 11.023 1.188 1.182 1.169 5.023 1.080 1.097 1.140 11.163 1.186 1.183 1.169 5.163 1.082 1.100 1.145 11.302 1.181 1.182 1.167 5.302 1.084 1.102 1.150 11.442 1.173 1.180 1.162 5.442 1.085 1.104 1.154 11.581 1.157 1.164 1.143 5.581 1.087 1.107 1.158 11.721 1.140 1.146 1.123 5.721 1.091 1.112 1.163 11.860 1.122 1.128 1.104 5.860 1.098 1.120 1.169 12.000 1.102 1.108 1.082 6.000 1.104 1.127 1.175 I 16 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 6. Alternate RAOC FQ Margin Decrease in Excess of 2% Per 31 EFPD V. C. Summer - Cycle 25 Cycle Burnup (MWD/MTU)

Maximum Decrease in FQ Margin 494 1.0200 666 1.0210 837 1.0313 1009 1.0311 1181 1.0296 1353 1.0292 1525 1.0294 1697 1.0298 1868 1.0305 2040 1.0318 2212 1.0336 2384 1.0355 2556 1.0367 2728 1.0368 2899 1.0361 3071 1.0345 3243 1.0322 3415 1.0293 3587 1.0261 3759 1.0224 3930 1.02 12350 1.02 12522 1.0202 12694 1.0205 12866 1.0200 Note: All cycle burnups outside the range of this table shall use a 1.020 decrease in margin for compliance with Specification 4.2.2.2e.

Linear interpolation is adequate for intermediate cycle burnups. 17 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 7. Baseload W(z) at 150, 3000, 5000, 8000 MWD/MTU V. C. Summer - Cycle 25 Core Height (ft) W(z) W(z) W(z) W(z)

Core Height (ft) W(z) W(z) W(z)

W(z) Core Height (ft) 150 3000 5000 8000 Core Height (ft) 150 3000 5000 8000 Core Height (ft) MWd/ MWd/ MWd/ MWd/ Core Height (ft) MWd/ MWd/ MWd / MWd/ Core Height (ft) MTU MTU MTU MTU Core Height (ft) MTU MTU MTU MTU 0.000 1.124 1.111 1.108 1.112 6.140 1.052 1.054 1.053 1.052 0.140 1.125 1.112 1.108 1.112 6.279 1.052 1.052 1.051 1.052 0.279 1.125 1.112 1.109 1.113 6.419 1.052 1.050 1.050 1.051 0.419 1.126 1.113 1.110 1.114 6.558 1.053 1.050 1.050 1.050 0.558 1.127 1.115 1.112 1.115 6.698 1.056 1.049 1.049 1.049 0.698 1.127 1.115 1.112 1.116 6.837 1.058 1.049 1.048 1.050 0.837 1.126 1.115 1.112 1.116 6.977 1.060 1.049 1.048 1.052 0.977 1.125 1.115 1.112 1.116 7.116 1.062 1.050 1.049 1.054 1.116 1.124 1.114 1.112 1.115 7.256 1.065 1.053 1.052 1.057 1.256 1.122 1.114 1.111 1.115 7.395 1.067 1.056 1.055 1.059 1.395 1.121 1.113 1.111 1.114 7.535 1.069 1.058 1.057 1.061 1.535 1.119 1.112 1.110 1.113 7.674 1.071 1.060 1.059 1.062 1.674 1.117 1.111 1.109 1.112 7.814 1.072 1.062 1.061 1.064 1.814 1.115 1.110 1.108 1.111 7.953 1.074 1.064 1.063 1.066 1.953 1.113 1.109 1.107 1.110 8.093 1.076 1.066 1.065 1.068 2.093 1.110 1.107 1.106 1.108 8.233 1.077 1.068 1.067 1.069 2.233 1.107 1.106 1.104 1.106 8.372 1.079 1.070 1.069 1.071 2.372 1.105 1.104 1.103 1.105 8.512 1.080 1.072 1.071 1.072 2.512 1.102 1.103 1.102 1.103 8.651 1.081 1.074 1.072 1.074 2.651 1.099 1.101 1.100 1.100 8.791 1.083 1.076 1.074 1.075 2.791 1.096 1.099 1.098 1.098 8.930 1.084 1.078 1.076 1.077 2.930 1.093 1.097 1.096 1.096 9.070 1.085 1.080 1.078 1.078 3.070 1.090 1.095 1.094 1.093 9.209 1.086 1.081 1.079 1.079 3.209 1.086 1.092 1.092 1.090 9.349 1.087 1.083 1.081 1.080 3.349 1.083 1.090 1.090 1.088 9.488 1.088 1.084 1.082 1.081 3.488 1.081 1.087 1.088 1.085 9.628 1.089 1.086 1.084 1.083 3.628 1.079 1.085 1.085 1.082 9.767 1.090 1.087 1.085 1.084 3.767 1.078 1.083 1.083 1.080 9.907 1.091 1.089 1.087 1.085 3.907 1.076 1.081 1.081 1.079 10.046 1.091 1.090 1.088 1.086 4.046 1.075 1.079 1.079 1.077 10.186 1.092 1.091 1.089 1.087 4.186 1.073 1.078 1.077 1.076 10.326 1.093 1.093 1.091 1.088 4.326 1.072 1.076 1.075 1.074 10.465 1.094 1.094 1.092 1.089 4.465 1.070 1.075 1.074 1.073 10.605 1.095 1.095 1.093 1.090 4.605 1.068 1.073 1.072 1.071 10.744 1.096 1.097 1.095 1.091 4.744 1.067 1.072 1.071 1.069 10.884 1.096 1.098 1.096 1.092 4.884 1.065 1.070 1.069 1.068 11.023 1.097 1.099 1.097 1.093 5.023 1.063 1.068 1.068 1.066 11.163 1.097 1.100 1.098 1.094 5.163 1.062 1.067 1.066 1.064 11.302 1.098 1.100 1.098 1.095 5.302 1.060 1.065 1.064 1.062 11.442 1.098 1.101 1.099 1.095 5.442 1.058 1.063 1.062 1.060 11.581 1.098 1.101 1.099 1.095 5.581 1.056 1.061 1.060 1.057 11.721 1.097 1.100 1.099 1.095 5.721 1.055 1.059 1.059 1.055 11.860 1.097 1.100 1.099 1.095 5.860 1.053 1.058 1.057 1.053 12.000 1.097 1.101 1.099 1.095 6.000 1.052 1.056 1.055 1.053 I 18 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 8. Baseload W(z) at 10000,14000,20000 MWD/MTU V. C. Summer - Cycle 25 Core Height (ft) W(z) W(z) W(z) Core Height (ft) W(z) W(z) W(z) Core Height (ft) 10000 14000 20000 Core Height (ft) 10000 14000 20000 Core Height (ft) MWd/ MWd/ MWd/ Core Height (ft) MWd/ MWd/ MWd/ Core Height (ft) MTU MTU MTU Core Height (ft) MTU MTU MTU 0.000 1.117 1.128 1.154 6.140 1.053 1.054 1.067 0.140 1.118 1.128 1.155 6.279 1.052 1.055 1.070 0.279 1.118 1.129 1.155 6.419 1.051 1.057 1.071 0.419 1.120 1.130 1.156 6.558 1.051 1.059 1.073 0.558 1.121 1.131 1.157 6.698 1.052 1.061 1.075 0.698 1.121 1.131 1.157 6.837 1.054 1.063 1.076 0.837 1.121 1.131 1.156 6.977 1.057 1.065 1.077 0.977 1.121 1.131 1.155 7.116 1.059 1.067 1.078 1.116 1.121 1.130 1.153 7.256 1.061 1.068 1.079 1.256 1.120 1.129 1.151 7.395 1.063 1.070 1.079 1.395 1.119 1.128 1.148 7.535 1.064 1.071 1.080 1.535 1.118 1.126 1.145 7.674 1.066 1.072 1.080 1.674 1.117 1.124 1.142 7.814 1.067 1.073 1.080 1.814 1.115 1.122 1.138 7.953 1.069 1.074 1.080 1.953 1.113 1.119 1.134 8.093 1.070 1.075 1.080 2.093 1.111 1.117 1.129 8.233 1.072 1.076 1.080 2.233 1.109 1.114 1.124 8.372 1.073 1.077 1.079 2.372 1.107 1.111 1.119 8.512 1.074 1.077 1.079 2.512 1.104 1.107 1.113 8.651 1.076 1.078 1.078 2.651 1.102 1.104 1.108 8.791 1.077 1.078 1.078 2.791 1.099 1.100 1.102 8.930 1.078 1.079 1.077 2.930 1.096 1.096 1.097 9.070 1.079 1.079 1.077 3.070 1.093 1.092 1.090 9.209 1.080 1.080 1.077 3.209 1.090 1.088 1.086 9.349 1.081 1.080 1.078 3.349 1.086 1.084 1.083 9.488 1.082 1.080 1.082 3.488 1.083 1.081 1.080 9.628 1.082 1.080 1.085 3.628 1.081 1.080 1.078 9.767 1.083 1.081 1.087 3.767 1.079 1.079 1.076 9.907 1.084 1.081 1.090 3.907 1.078 1.077 1.073 10.046 1.085 1.081 1.093 4.046 1.076 1.076 1.071 10.186 1.086 1.082 1.095 4.186 1.075 1.075 1.069 10.326 1.087 1.084 1.097 4.326 1.074 1.073 1.068 10.465 1.088 1.085 1.099 4.465 1.073 1.072 1.067 10.605 1.088 1.086 1.100 4.605 1.071 1.070 1.066 10.744 1.089 1.087 1.102 4.744 1.070 1.069 1.064 10.884 1.090 1.087 1.103 4.884 1.068 1.067 1.063 11.023 1.091 1.088 1.103 5.023 1.066 1.065 1.063 11.163 1.092 1.088 1.104 5.163 1.065 1.063 1.063 11.302 1.092 1.088 1.104 5.302 1.063 1.061 1.062 11.442 1.093 1.088 1.107 5.442 1.061 1.059 1.062 11.581 1.093 1.094 1.118 5.581 1.059 1.058 1.061 11.721 1.092 1.102 1.124 5.721 1.057 1.057 1.061 11.860 1.092 1.104 1.123 5.860 1.055 1.056 1.063 12.000 1.093 1.104 1.117 6.000 1.054 1.055 1.065 l 19 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Table 9. Baseload FQ Margin Decrease in Excess of 2% Per 31 EFPD V. C. Summer - Cycle 25 Cycle Burnup (MWD/MTU)

Maximum Decrease in FQ Margin 150 1.0200 322 1.0208 494 1.0251 666 1.0277 837 1.0275 1009 1.0248 1181 1.0215 1353 1.0206 1525 1.0200 2384 1.0200 2556 1.0205 2728 1.0221 2899 1.0228 3071 1.0225 3243 1.0213 3415 1.0200 8398 1.0200 8570 1.0203 8742 1.0200 Note: All cycle burnups outside the range of this table shall use a 1.020 decrease in margin for compliance with Specification 4.2.2.4e.

Linear interpolation is adequate for intermediate cycle burnups. 20 Revision 0 V. C. Summer Cycle 25 OCTOBER 2018 Figure 6. RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 25 0.90 1.10 0.95 1.00 1.05 R = FN-delta-H/1.62[1.0

+ 0.3(1.0 - P)] Measurement Uncertainty of 2.1% for Flow (includes 0.1% for feedwater venturi fouling) is included in this figure 21 Revision 0

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