RC-11-0074, Core Operating Limits Report (COLR) for Cycle 20

Core Operating Limits Report (COLR) for Cycle 20

ML11132A173
Person / Time
Site:	Summer
Issue date:	05/11/2011
From:	Gatlin T South Carolina Electric & Gas Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RC-11-0074
Download: ML11132A173 (32)

Text

Thomas D. Gatlin Vice President,Nuclear Operations 803.345.4342 A SCANA COMPANY RC-1 1-0074 May 11,2011 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

VIRGIL C. SUMMER NUCLEAR STATION (UNIT 1)

DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 20 In accordance with Section 6.9.1.11 of the Virgil C. Summer Nuclear Station Technical Specifications, South Carolina Electric & Gas Company (SCE&G) hereby submits the Core Operating Limits Report (COLR) for Cycle 20.

Should you have any questions, please call Mr. Bruce Thompson at (803) 931-5042.

Very truly yours, Thomas D. Gatlin JMG/TDGfJw Attachment c: Without Attachment unless noted K. B. Marsh V. M. McCree (w/attachment)

S. A. Byrne R. E. Martin (w/attachment)

J. B. Archie NRC Resident Inspector (w/attachment)

N. S. Cams K. M. Sutton J. H. Hamilton NSRC R. J. White RTS (LTD 320)

W. M. Cherry File (818.23-1, RR 50'0o)

DMS (RC-11-0074)

Virgil C.Summer Station - Post Office Box 88 - Jenkinsville, SC. 29065 - T(803) 345-5209 ~u4t~

SOUTH CAROLINA ELECTRIC & GAS COMPANY VIRGIL C. SUMMER NUCLEAR STATION CORE OPERATING LIMITS REPORT FOR CYCLE 20 REVISION 0 APRIL 2011

LIST OF EFFECTIVE PAGES PAGE REVISION i 0 ii 0 iii 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 0 11 0 12 0 13 0 14 0 15 0 16 0 17 0 18 0 19 0 20 0 21 0 22 0 23 0 24 0 25 0 26 0

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 - FQ(z) (Specification 3.2.2) 3 2.6 RCS Flow Rate and Nuclear Enthalpy Rise Hot Channel Factor - F, (Specification 3.2.3) 4 2.7 Power Distribution Measurement Uncertainty (Specifications 3.2.2 and 3.2.3) 4 3.0 References 6 Revision 0

List of Tables Table Page Table 1. RAOC W(z) at 150 MWD/MTU V. C. Summer - Cycle 20 11 Table 2. RAOC W(z) at 3000 MWD/MTU V. C. Summer - Cycle 20 12 Table 3. RAOC W(z) at 5000 MWD/MTU V. C. Summer - Cycle 20 13 Table 4. RAOC W(z) at 8000 MWD/MTU V. C. Summer - Cycle 20 14 Table 5. RAOC W(z) at 10000 MWD/MTU V. C. Summer - Cycle 20 15 Table 6. RAOC W(z) at 14000 MWD/MTU V. C. Summer - Cycle 20 16 Table 7. RAOC W(z) at 20000 MWD/MTU V. C. Summer - Cycle 20 17 Table 8. Baseload W(z) at 150 MWD/MTU V. C. Summer - Cycle 20 18 Table 9. Baseload W(z) at 3000 MWD/MTU V. C. Summer - Cycle 20 19 Table 10. Baseload W(z) at 5000 MWD/MTU V. C. Summer - Cycle 20 20 Table 11. Baseload W(z) at 8000 MWD/MTU V. C. Summer - Cycle 20 21 Table 12. Baseload W(z) at 10000 MWD/MTU V. C. Summer - Cycle 20 22 Table 13. Baseload W(z) at 14000 MWD/MTU V. C. Summer - Cycle 20 23 Table 14. Baseload W(z) at 20000 MWD/MTU V. C. Summer - Cycle 20 24 Table 15. Baseload FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 20 25 ii Revision 0

List of Figures Fibure Paste Figure 1. Moderator Temperature Coefficient Versus Power Level V. C. Summer - Cycle 20 7 Figure 2. Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 20 8 Figure 3. Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 20 9 Figure 4. K(z) - Normalized FQ(z) as a Function of Core Height V. C. Summer - Cycle 20 10 Figure 5. RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 20 26 iii Revision 0

V. C. Summer Cycle 20 April 2011 1.0 Core Operating Limits Report This Core Operating Limits Report (COLR) for V. C. Summer Station Cycle 20 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 I Revision 0

V. C. Summer Cycle 20 April 2011 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 pcn/°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. lxl04 Ak/k/OF

(-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/ 0 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.lx104 Ak/k/ 0 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 230 steps.

2 Revision 0

V. C. Summer Cycle 20 April 2011 2.3 Control Rod Insertion Limits (Specification 3.1.3.6):

Control Bank A and B rods shall be withdrawn to at least 230 steps. Control Bank C and D Rod Insertion Limits are specified by Figure 2. Control rod overlap is 102 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 20 are shown in Figure 3.

2.4.2 The Axial Flux Difference (AFD) target band during base load operations for Cycle 20 is:

BOL - EOL (0 - 23,000 MWD/MTU): +/-5% about a measured target value.

2.4.3 The minimum allowable power level for base load operation, APLN, is 75% of RATED THERMAL POWER.

2.5 Heat Flux Hot Channel Factor - FQ(z) (Specification 3.2.2):

FR7 FQ (Z) *Q

< x K(Z) for P > 0.5 P

FQ (Z):5 Q x K(Z) for P _0.5 where: P Thermal Power 0.5 Rated Thermal Power 2.5.1 FQlTP =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 7, 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. A 2% penalty factor shall be used for RAOC operation to increase FQM(z) as per Surveillance Requirement 4.2.2.2e. A 2% penalty factor shall be used at all bumups.

2.5.4 Elevation dependent W(Z)BL values for Baseload operation between 75 and 100% of rated thermal power with the item 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 8 3 Revision 0

V. C. Summer Cycle 20 April 2011 through 14, 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 15 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 FQM(Z) as per Surveillance.

2.5.5 The W(z) values are generated assuming that they will be used for a full power surveillance. When a part power surveillance is performed, using a flux map instead of the Power Distribution Monitoring System the W(z) values must be multiplied by the factor lI/P, when P is > 0.5. When P is < 0.5, the W(z) values must be multiplied by the factor 11(0.5). This is consistent with the adjustment in the FQ(z) limit at part power conditions.

2.6 RCS Flow Rate and Nuclear Enthalpy Rise Hot Channel Factor - F. (Specification 3.2.3):

FH where: P = Thermal Power R =

FR" x (1 + PFN x(l-P)) Rated Thermal Power 2.6.1 FLRJT =1.62 2.6.2 PFAH =0.3 2.6.3 The Acceptable Operation Region from the combination of Reactor Coolant System total flow and R is provided in Figure 5.

2.7 Power Distribution Measurement Uncertainty (Specifications 3.2.2 and 3.2.3):

If the Power Distribution Monitoring System is OPERABLE, as defined in Technical Specification 3.3.3.11, the uncertainty, UFAH, to be applied to the Nuclear Enthalpy Rise Hot Channel Factor FN A shall be calculated by the following formula:

U*

U FAH = 1.0 +

100.0 where: UAH = Uncertainty for enthalpy rise as defined in equation (5-19) in Reference 1 or 4.0, whichever is larger.

4 Revision 0

V. C. Summer Cycle 20 April 2011 If the Power Distribution Monitoring System is OPERABLE, as defined in Technical Specification 3.3.3.11, the uncertainty, UFQ, to be applied to the Heat Flux Hot Channel Factor FQ(z) shall be calculated by the following formula:

UFQ (1.0+1UQ .Ue where: UQ = 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.

Ue = Engineering uncertainty factor.

= 1.03 If the Power Distribution Monitoring System is INOPERABLE, as defined in Technical Specification 3.3.3.11, the uncertainty, UFAH, to be applied to the Nuclear Enthalpy Rise Hot Channel Factor FN shall be calculated by the following formula:

UFAH = UFAHm where: U FAHm = Base FH measurement uncertainty.

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

UFQ =Uqu' U where: Uqu = Base FQ measurement uncertainty.

= 1.05 Ue = Engineering uncertainty factor.

= 1.03 5 Revision 0

V. C. Summer Cycle 20 April 2011 3.0 References

1) WCAP-12472-P-A, "BEACON Core Monitoring and Operations Support System," August, 1994, (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).

6 Revision 0

V. C. Summer Cycle 20 April 2011 Figure 1. Moderator Temperature Coefficient Versus Power Level V.C. Summer - Cycle 20 1.00 0.90 0.80 U-0.70

.7

• d 0.60 4) 0 o 0.50 L_

E 0.40 a_

0

- 0.30 0

0.20 0.10 0.00 0 10 20 30 40 50 60 70 80 90 100 Percent of Rated Thermal Power 7 Revision 0

V. C. Summer Cycle 20 April 2011 Figure 2. Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 20 230 220 (0.55,230) 210 IILU 11 "A

200 IA 1.0,194) 190 180 170 BANKC 160 c 150 0

140 0 130 C. 120 11 Ft VFIA-(a) 110 0~ (0.0,118)

= 100 ...........

0 0

o 80 0 BANK D W 70 60 --r-TT-rT-,n I 50 40 30 20 10 (0.048,0) OVERLAP= 102 steps 0

0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Fraction Of Rated Thermal Power 8 Revision 0

V. C. Summer Cycle 20 April 2011 Figure 3. Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 20 120 S(-8,10oo) (+8, oo) 100 Unacceptable Unacceptable 80 0

-/-- _Acceptable]

0.

.C 60 0

(-22, 50)-(+20, 50)

0. 40 20 n

-40 -30 -20 -10 0 10 20 30 40 Axial Flux Difference (%Ai) 9 Revision 0

V. C. Summer Cycle 20 April 2011 V. C. Summer Cycle 20 April 2011 Figure 4. K(z) - Normalized FQ(Z) as a Function of Core Height V. C. Summer - Cycle 20 1.101 1 1 1 (0.0, 1.0) (6.0,1.)

1.00 -- - . -, 2.0, 0.925) 0.90 0.80 0.70 I-L, 0.60

• 0.50 I-0 NN 0.40 0.30 0.20 0.10 0.00 0 2 4 6 8 10 12 Bottom Core Height (Feet) Top 10 Revision 0

V. C. Summer Cycle 20 April 2011 Table 1. RAOC W(z) at 150 MWD/MTU V. C. Summer - Cycle 20 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.233 6.140 1.160 0.140 1.232 6.279 1.166 0.279 1.238 6.419 1.170 0.419 1.250 6.558 1.175 0.558 1.266 6.698 1.178 0.698 1.273 6.837 1.181 0.837 1.271 6.977 1.184 0.977 1.267 7.116 1.185 1.116 1.262 7.256 1.186 1.256 1.256 7.395 1.186 1.395 1.248 7.535 1.186 1.535 1.240 7.674 1.184 1.674 1.231 7.814 1.182 1.814 1.221 7.953 1.179 1.953 1.211 8.093 1.175 2.093 1.201 8.233 1.170 2.233 1.190 8.372 1.165 2.372 1.180 8.512 1.157 2.512 1.170 8.651 1.148 2.651 1.159 8.791 1.140 2.791 1.148 8.930 1.138 2.930 1.140 9.070 1.138 3.070 1.138 9.209 1.140 3.209 1.138 9.349 1.142 3.349 1.137 9.488 1.143 3.488 1.136 9.628 1.144 3.628 1.135 9.767 1.143 3.767 1.133 9.907 1.143 3.907 1.131 10.046 1.145 4.046 1.129 10.186 1.150 4.186 1.128 10.326 1.156 4.326 1.127 10.465 1.161 4.465 1.127 10.605 1.166 4.605 1.129 10.744 1.169 4.744 1.129 10.884 1.172 4.884 1.129 11.023 1.174 5.023 1.129 11.163 1.174 5.163 1.130 11.302 1.187 5.302 1.132 11.442 1.184 5.442 1.135 11.581 1.173 5.581 1.139 11.721 1.150 5.721 1.143 11.860 1.119 5.860 1.148 12.000 1.088 6.000 1.154 1 11 Revision 0

V. C. Summer Cycle 20 April 2011 Table 2. RAOC W(z) at 3000 MWD/MTU V. C. Summer - Cycle 20 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.379 6.140 1.117 0.140 1.378 6.279 1.122 0.279 1.381 6.419 1.127 0.419 1.389 6.558 1.132 0.558 1.400 6.698 1.137 0.698 1.401 6.837 1.141 0.837 1.395 6.977 1.145 0.977 1.386 7.116 1.148 1.116 1.377 7.256 1.150 1.256 1.365 7.395 1.152 1.395 1.351 7.535 1.154 1.535 1.336 7.674 1.155 1.674 1.320 7.814 1.155 1.814 1.304 7.953 1.154 1.953 1.286 8.093 1.153 2.093 1.269 8.233 1.151 2.233 1.251 8.372 1.149 2.372 1.232 8.512 1.145 2.512 1.215 8.651 1.141 2.651 1.196 8.791 1.137 2.791 1.177 8.930 1.134 2.930 1.163 9.070 1.132 3.070 1.155 9.209 1.130 3.209 1.151 9.349 1.129 3.349 1.149 9.488 1.130 3.488 1.147 9.628 1.137 3.628 1.145 9.767 1.145 3.767 1.143 9.907 1.152 3.907 1.141 10.046 1.158 4.046 1.139 10.186 1.164 4.186 1.137 10.326 1.170 4.326 1.135 10.465 1.175 4.465 1.133 10.605 1.179 4.605 1.130 10.744 1.183 4.744 1.127 10.884 1.185 4.884 1.124 11.023 1.187 5.023 1.121 11.163 1.187 5.163 1.117 11.302 1.186 5.302 1.112 11.442 1.182 5.442 1.109 11.581 1.168 5.581 1.108 11.721 1.151 5.721 1.108 11.860 1.132 5.860 1.109 12.000 1.108 6.000 1.112 12 Revision 0

V. C. Summer Cycle 20 April 2011 Table 3. RAOC W(z) at 5000 MWD/MTU V. C. Summer - Cycle 20 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.332 6.140 1.108 0.140 1.331 6.279 1.114 0.279 1.334 6.419 1.120 0.419 1.341 6.558 1.126 0.558 1.351 6.698 1.132 0.698 1.352 6.837 1.137 0.837 1.346 6.977 1.142 0.977 1.338 7.116 1.146 1.116 1.329 7.256 1.149 1.256 1.318 7.395 1.152 1.395 1.305 7.535 1.155 1.535 1.291 7.674 1.157 1.674 1.276 7.814 1.158 1.814 1.260 7.953 1.159 1.953 1.244 8.093 1.159 2.093 1.227 8.233 1.158 2.233 1.210 8.372 1.157 2.372 1.193 8.512 1.155 2.512 1.177 8.651 1.151 2.651 1.159 8.791 1.150 2.791 1.141 8.930 1.150 2.930 1.129 9.070 1.157 3.070 1.129 9.209 1.166 3.209 1.127 9.349 1.174 3.349 1.125 9.488 1.183 3.488 1.123 9.628 1.191 3.628 1.121 9.767 1.198 3.767 1.119 9.907 1.205 3.907 1.116 10.046 1.213 4.046 1.114 10.186 1.220 4.186 1.111 10.326 1.226 4.326 1.107 10.465 1.232 4.465 1.103 10.605 1.236 4.605 1.100 10.744 1.239 4.744 1.096 10.884 1.240 4.884 1.093 11.023 1.241 5.023 1.091 11.163 1.241 5.163 1.090 11.302 1.239 5.302 1.091 11.442 1.232 5.442 1.092 11.581 1.219 5.581 1.093 11.721 1.203 5.721 1.095 11.860 1.184 5.860 1.098 12.000 1.161 6.000 1.103 1 1 13 Revision 0

V. C. Summer Cycle 20 April 2011 Table 4. RAOC W(z) at 8000 MWD/MTU V. C. Summer - Cycle 20 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.272 6.140 1.107 0.140 1.270 6.279 1.115 0.279 1.273 6.419 1.123 0.419 1.280 6.558 1.131 0.558 1.290 6.698 1.139 0.698 1.292 6.837 1.147 0.837 1.287 6.977 1.153 0.977 1.280 7.116 1.160 1.116 1.272 7.256 1.165 1.256 1.261 7.395 1.170 1.395 1.249 7.535 1.175 1.535 1.236 7.674 1.179 1.674 1.222 7.814 1.182 1.814 1.208 7.953 1.184 1.953 1.192 8.093 1.186 2.093 1.177 8.233 1.188 2.233 1.161 8.372 1.188 2.372 1.145 8.512 1.187 2.512 1.130 8.651 1.185 2.651 1.115 8.791 1.184 2.791 1.098 8.930 1.185 2.930 1.087 9.070 1.191 3.070 1.083 9.209 1.199 3.209 1.082 9.349 1.207 3.349 1.082 9.488 1.216 3.488 1.082 9.628 1.227 3.628 1.081 9.767 1.238 3.767 1.080 9.907 1.248 3.907 1.080 10.046 1.258 4.046 1.080 10.186 1.266 4.186 1.081 10.326 1.274 4.326 1.083 10.465 1.281 4.465 1.084 10.605 1.286 4.605 1.085 10.744 1.290 4.744 1.085 10.884 1.292 4.884 1.086 11.023 1.294 5.023 1.086 11.163 1.295 5.163 1.087 11.302 1.293 5.302 1.087 11.442 1.285 5.442 1.088 11.581 1.268 5.581 1.089 11.721 1.254 5.721 1.090 11.860 1.238 5.860 1.094 12.000 1.217 6.000 1.099 14 Revision 0

V. C. Summer Cycle 20 April 2011 Table 5. RAOC W(z) at 10000 MWD/MTU V. C. Summer - Cycle 20 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.223 6.140 1.110 0.140 1.221 6.279 1.120 0.279 1.225 6.419 1.128 0.419 1.233 6.558 1.136 0.558 1.244 6.698 1.143 0.698 1.246 6.837 1.150 0.837 1.243 6.977 1.157 0.977 1.237 7.116 1.163 1.116 1.230 7.256 1.168 1.256 1.222 7.395 1.173 1.395 1.211 7.535 1.177 1.535 1.200 7.674 1.180 1.674 1.188 7.814 1.183 1.814 1.175 7.953 1.185 1.953 1.162 8.093 1.186 2.093 1.148 8.233 1.187 2.233 1.135 8.372 1.187 2.372 1.121 8.512 1.186 2.512 1.108 8.651 1.182 2.651 1.095 8.791 1.181 2.791 1.081 8.930 1.181 2.930 1.070 9.070 1.187 3.070 1.063 9.209 1.197 3.209 1.059 9.349 1.208 3.349 1.059 9.488 1.220 3.488 1.059 9.628 1.232 3.628 1.059 9.767 1.243 3.767 1.061 9.907 1.253 3.907 1.063 10.046 1.263 4.046 1.066 10.186 1.273 4.186 1.069 10.326 1.282 4.326 1.071 10.465 1.290 4.465 1.074 10.605 1.297 4.605 1.076 10.744 1.303 4.744 1.078 10.884 1.308 4.884 1.080 11.023 1.310 5.023 1.082 11.163 1.312 5.163 1.084 11.302 1.312 5.302 1.085 11.442 1.309 5.442 1.087 11.581 1.297 5.581 1.087 11.721 1.280 5.721 1.089 11.860 1.260 5.860 1.092 12.000 1.235 6.000 1.100 15 Revision 0

V. C. Summer Cycle 20 April 2011 Table 6. RAOC W(z) at 14000 MWD/MTU V. C. Summer - Cycle 20 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.192 6.140 1.128 0.140 1.191 6.279 1.139 0.279 1.195 6.419 1.149 0.419 1.205 6.558 1.157 0.558 1.218 6.698 1.165 0.698 1.223 6.837 1.173 0.837 1.222 6.977 1.180 0.977 1.219 7.116 1.186 1.116 1.214 7.256 1.192 1.256 1.208 7.395 1.197 1.395 1.200 7.535 1.201 1.535 1.191 7.674 1.204 1.674 1.181 7.814 1.206 1.814 1.171 7.953 1.208 1.953 1.161 8.093 1.209 2.093 1.150 8.233 1.209 2.233 1.139 8.372 1.209 2.372 1.128 8.512 1.207 2.512 1.117 8.651 1.204 2.651 1.105 8.791 1.201 2.791 1.094 8.930 1.202 2.930 1.085 9.070 1.206 3.070 1.079 9.209 1.210 3.209 1.076 9.349 1.213 3.349 1.077 9.488 1.214 3.488 1.078 9.628 1.214 3.628 1.080 9.767 1.217 3.767 1.081 9.907 1.223 3.907 1.081 10.046 1.230 4.046 1.081 10.186 1.237 4.186 1.081 10.326 1.243 4.326 1.082 10.465 1.249 4.465 1.084 10.605 1.254 4.605 1.087 10.744 1.258 4.744 1.090 10.884 1.261 4.884 1.093 11.023 1.262 5.023 1.096 11.163 1.262 5.163 1.098 11.302 1.260 5.302 1.101 11.442 1.255 5.442 1.102 11.581 1.241 5.581 1.103 11.721 1.223 5.721 1.104 11.860 1.202 5.860 1.108 12.000 1.177 6.000 1.117 16 Revision 0

V. C. Summer Cycle 20 April 2011 Table 7. RAOC W(z) at 20000 MWD/MTU V. C. Summer - Cycle 20 Core Height W(z) Core Height W(z)

(ft) ift) 0.000 1.159 6.140 1.180 0.140 1.156 6.279 1.188 0.279 1.161 6.419 1.194 0.419 1.171 6.558 1.200 0.558 1.186 6.698 1.205 0.698 1.193 6.837 1.209 0.837 1.193 6.977 1.212 0.977 1.191 7.116 1.214 1.116 1.188 7.256 1.215 1.256 1.183 7.395 1.216 1.395 1.176 7.535 1.215 1.535 1.168 7.674 1.213 1.674 1.160 7.814 1.211 1.814 1.151 7.953 1.208 1.953 1.142 8.093 1.203 2.093 1.133 8.233 1.197 2.233 1.123 8.372 1.190 2.372 1.113 8.512 1.186 2.512 1.104 8.651 1.186 2.651 1.094 8.791 1.186 2.791 1.083 8.930 1.187 2.930 1.075 9.070 1.191 3.070 1.069 9.209 1.196 3.209 1.068 9.349 1.202 3.349 1.071 9.488 1.207 3.488 1.076 9.628 1.212 3.628 1.081 9.767 1.217 3.767 1.085 9.907 1.221 3.907 1.089 10.046 1.224 4.046 1.095 10.186 1.226 4.186 1.102 10.326 1.228 4.326 1.110 10.465 1.229 4.465 1.117 10.605 1.229 4.605 1.123 10.744 1.227 4.744 1.129 10.884 1.225 4.884 1.134 11.023 1.222 5.023 1.139 11.163 1.221 5.163 1.143 11.302 1.218 5.302 1.146 11.442 1.209 5.442 1.150 11.581 1.193 5.581 1.153 11.721 1.173 5.721 1.157 11.860 1.151 5.860 1.163 12.000 1.126 6.000 1.171 17 Revision 0

V. C. Summer Cycle 20 April 2011 Table 8. BASELOAD W(z) at 150 MWD/MTU V. C. Summer - Cycle 20 Core Height W(z) Core Height W(z) 0.000 1.118 6.140 1.063 0.140 1.119 6.279 1.061 0.279 1.120 6.419 1.059 0.419 1.121 6.558 1.057 0.558 1.123 6.698 1.057 0.698 1.123 6.837 1.057 0.837 1.123 6.977 1.058 0.977 1.122 7.116 1.059 1.116 1.121 7.256 1.061 1.256 1.120 7.395 1.063 1.395 1.119 7.535 1.065 1.535 1.118 7.674 1.066 1.674 1.116 7.814 1.068 1.814 1.114 7.953 1.069 1.953 1.112 8.093 1.071 2.093 1.110 8.233 1.072 2.233 1.107 8.372 1.073 2.372 1.105 8.512 1.074 2.512 1.102 8.651 1.075 2.651 1.099 8.791 1.076 2.791 1.096 8.930 1.077 2.930 1.093 9.070 1.078 3.070 1.089 9.209 1.079 3.209 1.086 9.349 1.080 3.349 1.084 9.488 1.081 3.488 1.082 9.628 1.081 3.628 1.081 9.767 1.082 3.767 1.080 9.907 1.083 3.907 1.079 10.046 1.083 4.046 1.078 10.186 1.084 4.186 1.078 10.326 1.084 4.326 1.077 10.465 1.085 4.465 1.077 10.605 1.086 4.605 1.076 10.744 1.086 4.744 1.076 10.884 1.087 4.884 1.075 11.023 1.087 5.023 1.074 11.163 1.088 5.163 1.073 11.302 1.088 5.302 1.072 11.442 1.090 5.442 1.071 11.581 1.095 5.581 1.070 11.721 1.094 5.721 1.068 11.860 1.090 5.860 1.067 12.000 1.087 6.000 1.065 18 Revision 0

V. C. Summer Cycle 20 April 2011 Table 9. BASELOAD W(z) at 3000 MWD/MTU V. C. Summer - Cycle 20 Core Height W(z) Core Height W(z)

(ft) (ft) 0.000 1.097 6.140 1.059 0.140 1.098 6.279 1.058 0.279 1.099 6.419 1.056 0.419 1.100 6.558 1.054 0.558 1.102 6.698 1.052 0.698 1.103 6.837 1.050 0.837 1.103 6.977 1.048 0.977 1.104 7.116 1.049 1.116 1.104 7.256 1.050 1.256 1.104 7.395 1.051 1.395 1.104 7.535 1.053 1.535 1.104 7.674 1.055 1.674 1.103 7.814 1.057 1.814 1.103 7.953 1.059 1.953 1.102 8.093 1.061 2.093 1.101 8.233 1.062 2.233 1.101 8.372 1.064 2.372 1.100 8.512 1.066 2.512 1.098 8.651 1.068 2.651 1.097 8.791 1.069 2.791 1.096 8.930 1.071 2.930 1.094 9.070 1.072 3.070 1.092 9.209 1.074 3.209 1.091 9.349 1.075 3.349 1.089 9.488 1.077 3.488 1.087 9.628 1.078 3.628 1.085 9.767 1.079 3.767 1.084 9.907 1.081 3.907 1.082 10.046 1.082 4.046 1.080 10.186 1.083 4.186 1.079 10.326 1.084 4.326 1.078 10.465 1.085 4.465 1.077 10.605 1.086 4.605 1.075 10.744 1.087 4.744 1.074 10.884 1.088 4.884 1.072 11.023 1.089 5.023 1.071 11.163 1.090 5.163 1.069 11.302 1.091 5.302 1.067 11.442 1.091 5.442 1.065 11.581 1.091 5.581 1.064 11.721 1.091 5.721 1.063 11.860 1.091 5.860 1.062 12.000 1.091 6.000 1.061 19 Revision 0

V. C. Summer Cycle 20 April 2011 V. C. Summer Cycle 20 April 2011 Table 10. BASELOAD W(z) at 5000 MWD/MTU V. C. Summer - Cycle 20 Core Height W(z) Core Height W(z)

(ft) (ft) 0.000 1.097 6.140 1.056 0.140 1.097 6.279 1.055 0.279 1.097 6.419 1.054 0.419 1.098 6.558 1.052 0.558 1.100 6.698 1.050 0.698 1.101 6.837 1.048 0.837 1.102 6.977 1.047 0.977 1.102 7.116 1.047 1.116 1.102 7.256 1.049 1.256 1.103 7.395 1.051 1.395 1.103 7.535 1.053 1.535 1.103 7.674 1.055 1.674 1.102 7.814 1.057 1.814 1.102 7.953 1.059 1.953 1.102 8.093 1.060 2.093 1.101 8.233 1.062 2.233 1.100 8.372 1.064 2.372 1.099 8.512 1.066 2.512 1.098 8.651 1.068 2.651 1.097 8.791 1.069 2.791 1.096 8.930 1.071 2.930 1.094 9.070 1.072 3.070 1.093 9.209 1.074 3.209 1.091 9.349 1.075 3.349 1.089 9.488 1.077 3.488 1.087 9.628 1.078 3.628 1.085 9.767 1.079 3.767 1.084 9.907 1.081 3.907 1.082 10.046 1.082 4.046 1.080 10.186 1.083 4.186 1.079 10.326 1.084 4.326 1.078 10.465 1.085 4.465 1.077 10.605 1.087 4.605 1.075 10.744 1.088 4.744 1.074 10.884 1.089 4.884 1.072 11.023 1.089 5.023 1.070 11.163 1.090.

5.163 1.069 11.302 1.091 5.302 1.067 11.442 1.092 5.442 1.065 11.581 1.092 5.581 1.063 11.721 1.092 5.721 1.061 11.860 1.092 5.860 1.059 12.000 1.092 6.000 1.057 1 1 20 Revision 0

V. C. Summer Cycle 20 April 2011 Table 11. BASELOAD W(z) at 8000 MWD/MTU V. C. Summer - Cycle 20 Core Height W(z) Core Height W(z)

(ft) (ft) 0.000 1.100 6.140 1.057 0.140 1.101 6.279 1.055 0.279 1.102 6.419 1.053 0.419 1.104 6.558 1.052 0.558 1.106 6.698 1.051 0.698 1.107 6.837 1.050 0.837 1.107 6.977 1.050 0.977 1.107 7.116 1.051 1.116 1.108 7.256 1.053 1.256 1.108 7.395 1.056 1.395 1.108 7.535 1.058 1.535 1.107 7.674 1.060 1.674 1.107 7.814 1.061 1.814 1.106 7.953 1.063 1.953 1.105 8.093 1.065 2.093 1.104 8.233 1.066 2.233 1.103 8.372 1.068 2.372 1.102 8.512 1.070 2.512 1.100 8.651 1.071 2.651 1.099 8.791 1.072 2.791 1.097 8.930 1.074 2.930 1.095 9.070 1.075 3.070 1.093 9.209 1.076 3.209 1.091 9.349 1.078 3.349 1.088 9.488 1.079 3.488 1.086 9.628 1.080 3.628 1.084 9.767 1.081 3.767 1.082 9.907 1.082 3.907 1.080 10.046 1.083 4.046 1.079 10.186 1.084 4.186 1.078 10.326 1.085 4.326 1.076 10.465 1.086 4.465 1.074 10.605 1.087 4.605 1.073 10.744 1.088 4.744 1.071 10.884 1.089 4.884 1.069 11.023 1.090 5.023 1.068 11.163 1.090 5.163 1.066 11.302 1.091 5.302 1.064 11.442 1.092 5.442 1.062 11.581 1.092 5.581 1.061 11.721 1.092 5.721 1.060 11.860 1.092 5.860 1.059 12.000 1.092 6.000 1.058 1 21 Revision 0

V. C. Summer Cycle 20 April 2011 Table 12. BASELOAD W(z) at 10000 MWD/MTU V. C. Summer - Cycle 20 Core Height W(z) Core Height W(z)

(ft) (ft) 0.000 1.108 6.140 1.058 0.140 1.109 6.279 1.056 0.279 1.110 6.419 1.054 0.419 1.111 6.558 1.052 0.558 1.113 6.698 1.052 0.698 1.114 6.837 1.053 0.837 1.114 6.977 1.054 0.977 1.114 7.116 1.056 1.116 1.114 7.256 1.058 1.256 1.114 7.395 1.060 1.395 1.114 7.535 1.062 1.535 1.113 7.674 1.063 1.674 1.112 7.814 1.065 1.814 1.111 7.953 1.066 1.953 1.110 8.093 1.068 2.093 1.109 8.233 1.069 2.233 1.107 8.372 1.071 2.372 1.105 8.512 1.072 2.512 1.103 8.651 1.073 2.651 1.101 8.791 1.074 2.791 1.099 8.930 1.076 2.930 1.096 9.070 1.077 3.070 1.093 9.209 1.078 3.209 1.091 9.349 1.078 3.349 1.088 9.488 1.079 3.488 1.085 9.628 1.080 3.628 1.082 9.767 1.081 3.767 1.081 9.907 1.082 3.907 1.079 10.046 1.083 4.046 1.078 10.186 1.084 4.186 1.076 10.326 1.085 4.326 1.075 10.465 1.085 4.465 1.073 10.605 1.086 4.605 1.072 10.744 1.087 4.744 1.070 10.884 1.088 4.884 1.069 11.023 1.088 5.023 1.067 11.163 1.089 5.163 1.066 11.302 1.090 5.302 1.065 11.442 1.090 5.442 1.064 11.581 1.090 5.581 1.063 11.721 1.090 5.721 1.062 11.860 1.090 5.860 1.061 12.000 1.090 6.000 1.059 1 1 j 22 Revision 0

V. C. Summer Cycle 20 April 2011 Table 13. BASELOAD W(z) at 14000 MWD/MTU V. C. Summer - Cycle 20 Core Height W(z) Core Height W(z) 1.1) -f_

0.000 1.120 6.140 1.059 0.140 1.121 6.279 1.058 0.279 1.122 6.419 1.058 0.419 1.124 6.558 1.058 0.558 1.125 6.698 1.059 0.698 1.126 6.837 1.061 0.837 1.126 6.977 1.063 0.977 1.126 7.116 1.065 1.116 1.126 7.256 1.067 1.256 1.125 7.395 1.068 1.395 1.124 7.535 1.070 1.535 1.123 7.674 1.071 1.674 1.121 7.814 1.072 1.814 1.120 7.953 1.074 1.953 1.118 8.093 1.075 2.093 1.116 8.233 1.075 2.233 1.113 8.372 1.076 2.372 1.110 8.512 1.077 2.512 1.107 8.651 1.078 2.651 1.104 8.791 1.078 2.791 1.101 8.930 1.079 2.930 1.097 9.070 1.079 3.070 1.093 9.209 1.080 3.209 1.089 9.349 1.080 3.349 1.086 9.488 1.080 3.488 1.083 9.628 1.081 3.628 1.081 9.767 1.081 3.767 1.079 9.907 1.082 3.907 1.078 10.046 1.082 4.046 1.077 10.186 1.083 4.186 1.076 10.326 1.083 4.326 1.075 10.465 1.083 4.465 1.075 10.605 1.084 4.605 1.074 10.744 1.085 4.744 1.073 10.884 1.086 4.884 1.072 11.023 1.086 5.023 1.071 11.163 1.086 5.163 1.070 11.302 1.086 5.302 1.069 11.442 1.086 5.442 1.068 11.581 1.086 5.581 1.066 11.721 1.086 5.721 1.065 11.860 1.086 5.860 1.063 12.000 1.086 6.000 1.061 23 Revision 0

V. C. Summer Cycle 20 April 2011 Table 14. BASELOAD W(z) at 20000 MWD/MTU V. C. Summer - Cycle 20 Core Height W(z) Core Height W(z)

(ft) (ft) 0.000 1.148 6.140 1.067 0.140 1.149 6.279 1.069 0.279 1.150 6.419 1.072 0.419 1.151 6.558 1.073 0.558 1.152 6.698 1.075 0.698 1.152 6.837 1.076 0.837 1.152 6.977 1.078 0.977 1.151 7.116 1.079 1.116 1.149 7.256 1.080 1.256 1.148 7.395 1.081 1.395 1.145 7.535 1.081 1.535 1.143 7.674 1.082 1.674 1.140 7.814 1.082 1.814 1.136 7.953 1.082 1.953 1.132 8.093 1.082 2.093 1.128 8.233 1.082 2.233 1.124 8.372 1.082 2.372 1.119 8.512 1.082 2.512 1.114 8.651 1.081 2.651 1.108 8.791 1.081 2.791 1.103 8.930 1.081 2.930 1.097 9.070 1.081 3.070 1.091 9.209 1.083 3.209 1.085 9.349 1.085 3.349 1.083 9.488 1.088 3.488 1.081 9.628 1.090 3.628 1.080 9.767 1.092 3.767 1.078 9.907 1.094 3.907 1.077 10.046 1.095 4.046 1.075 10.186 1.097 4.186 1.073 10.326 1.098 4.326 1.072 10.465 1.099 4.465 1.071 10.605 1.100 4.605 1.071 10.744 1.101 4.744 1.070 10.884 1.101 4.884 1.070 11.023 1.101 5.023 1.069 11.163 1.101 5.163 1.068 11.302 1.101 5.302 1.068 11.442 1.101 5.442 1.066 11.581 1.100 5.581 1.065 11.721 1.098 5.721 1.063 11.860 1.097 5.860 1.063 12.000 1.097 6.000 1.064 24 Revision 0

V. C. Summer Cycle 20 April 2011 Table 15. BASE LOAD FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 20 Cycle Burnup Maximum Decrease (MWD/MTU) in FO Margin 1008 1.0200 1180 1.0301 1352 1.0402 1523 1.0385 1695 1.0352 1867 1.0317 2038 1.0282 2210 1.0248 2382 1.0217 2554 1.0200 Note: All cycle burnups outside the range of this table shall use a 1.0200 decrease in margin for compliance with Specification 4.2.2.2e. Linear interpolation is adequate for intermediate cycle bumups.

25 Revision 0

V. C. Summer Cycle 20 April 2011 Figure 5. RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 20 30.0 29.8-29.6 29.4-a.

o 29.2 i- 29.0 0

E29.0 28.

0.9 0.90 0.95 1.00 1.05 1.10 R = FN-delta-H/1.6211.0 + 0.3(1.0 - P)]

Measurement Uncertainty of 2.1% for Flow (includes 0.1% for feedwater venturi fouling) is included in this figure.

26 Revision 0