RC-12-0177, (Unit 1), Core Operating Limits Report (COLR) for Cycle 21

(Unit 1), Core Operating Limits Report (COLR) for Cycle 21

ML12328A016
Person / Time
Site:	Summer
Issue date:	11/19/2012
From:	Gatlin T SCANA Corp
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RC-12-0177
Download: ML12328A016 (33)

Text

Thomas D. Gatlin Vice President,NuclearOperations 803.345.4342

ýNovember c 19, 2012 A ScANA COMPANY 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 21 In accordance with Section 6.9.1.11 of the Virgil C. Summer Nuclear Station Technical Specifications, South Carolina Electric & Gas Company (SCE&G), acting for itself and as an agent for South Carolina Public Service Authority, hereby submits the Core Operating Limits Report (COLR) for Cycle 21.

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

Very truly yours, Thomas D. Gatlin JMG/TDG/ts 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 NSRC J. H. Hamilton RTS (LTD 320)

R. J. White File (818.23-1, RR 5000)

W. M. Cherry DMS (RC-12-0177)

K. M. Sutton Virgil C.Summer Station - Post Office Box 88 . Jenkinsville, SC . 29065 . F(803) 345-5209 .

Document Control Desk Attachment RC-1 2-0177 Page 1 of 32 SOUTH CAROLINA ELECTRIC & GAS COMPANY VIRGIL C. SUMMER NUCLEAR STATION UNIT 1 CORE OPERATING LIMITS REPORT FOR CYCLE 21 REVISION 0 November 2012

I I Document Control Desk Attachment RC-1 2-0177 Page 2 of 32 LIST OF EFFECTIVE PAGES PAGE REVISION 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 27 0

Document Control Desk Attachment RC-12-0177 Page 3 of 32 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

Document Control Desk Attachment RC-12-0177 Page 4 of 32 List of Tables Table Page Table 1. RAOC W(z) at 150 MWD/MTU V. C. Summer - Cycle 21 11 Table 2. RAOC W(z) at 3000 MWD/MTU V. C. Summer - Cycle 21 12 Table 3. RAOC W(z) at 5000 MWD/MTU V. C. Summer - Cycle 21 13 Table 4. RAOC W(z) at 8000 MWD/MTU V. C. Summer - Cycle 21 14 Table 5. RAOC W(z) at 10000 MWD/MTU V. C. Summer - Cycle 21 15 Table 6. RAOC W(z) at 14000 MWD/MTU V. C. Summer - Cycle 21 16 Table 7. RAOC W(z) at 20000 MWD/MTU V. C. Summer - Cycle 21 17 Table 8. RAOC FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 21 18 Table 9. Baseload W(z) at 150 MWD/MTU V. C. Summer - Cycle 21 19 Table 10. Baseload W(z) at 3000 MWD/MTU V. C. Summer - Cycle 21 20 Table 11. Baseload W(z) at 5000 MWD/MTU V. C. Summer - Cycle 21 21 Table 12. Baseload W(z) at 8000 MWD/MTU V. C. Summer - Cycle 21 22 Table 13. Baseload W(z) at 10000 MWD/MTU V. C. Summer - Cycle 21 23 Table 14. Baseload W(z) at 14000 MWD/MTU V. C. Summer - Cycle 21 24 Table 15. Baseload W(z) at 20000 MWD/MTU V. C. Summer - Cycle 21 25 Table 16. Baseload FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 21 26 ii Revision 0

Document Control Desk Attachment RC-12-0177 Page 5 of32 List of Figures Fi ure Page Figure 1. Moderator Temperature Coefficient Versus Power Level V. C. Summer - Cycle 21 7 Figure 2. Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 21 8 Figure 3. Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 21 9 Figure 4. K(z) - Normalized FQ(z) as a Function of Core Height V. C. Summer-Cycle 21 10 Figure 5. RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 21 27 111Rio Revision 0

V. C. Summer Cycle 21 November 2012 1.0 Core Operating Limits Report This Core Operating Limits Report (COLR) for V. C. Summer Station Cycle 21 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 3.2.3 RCS Flow Rate and Nuclear Enthalpy Rise Hot Channel Factor 3.3.3.11 Power Distribution Measurement Uncertainty Document Control Desk Attachment I Revision 0 RC-12-0177 Page 6 of 32

V. C. Summer Cycle 21 November 2012 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'-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 -4.1x 10-4 Ak/k/°F

(-41 pcm/rF).

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

-4.1xlO04 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 230 steps.

Document Control Desk Revision 0 RC-1 2-0177 Page 7 of 32

V. C. Summer Cycle 21 November 2012 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 21 are shown in Figure 3.

2.4.2 The Axial Flux Difference (AFD) target band during base load operations for Cycle 21 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, APLND, is 75% of RATED THERMAL POWER.

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

F0 (Z) -< -- x K(Z) for P > 0.5 P

F RTP Thermal Power FQ (Z) Q x K(Z) forP < 0.5 where: P - -

0.5 Rated Thermal Power 2.5.1 FRTP =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 burmup through the use of three point interpolation. Table 8 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 FQM (z) as per Surveillance Requirement 4.2.2.2e. A 2% penalty factor shall be used at all burnups that are outside the range of Table 8.

Document Control Desk Attachment Re-120177Revision 3 0 RC-1 2-01 77 Page 8 of 32

V. C. Summer Cycle 21 November 2012 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 9 through 15, respectively. This information is sufficient to determine W(Z)BL versus core height for burnups in the range of 0 MWD/MTU to EOL bumup through the use of three point interpolation. Table 16 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 Requirement 4.2.2.4e. A 2% penalty factor shall be used at all burnups that are outside the range of Table 16.

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

FN Thermal Power R MN where: P =

FRT x I + PFx(1-P) Rated Thermal Power 2.6.1 FRT = 1.62 All 2.6.2 PFN = 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 FNAH shall be calculated by the following formula:

UFAH U0 H 100.0 where: UA = Uncertainty for enthalpy rise as defined in equation (5-19) in Reference 1 or 4.0, whichever is larger.

Document Control Desk Revision 0 RC-1 2-0177 Page 9 of 32

V. C. Summer Cycle 21 November 2012 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 + UQj).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 I 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 FNAH shall be calculated by the following formula:

UFAH = UF-m where: UFAHm = Base FAH 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

• Ue where: Uqu =Base FQ measurement uncertainty.

= 1.05 U = Engineering uncertainty factor.

= 1.03 Document Control Desk Attachment 5 Revision 0 RC-12-0177 Page 10 of 32

V. C. Summer Cycle 21 November 2012 3.0 References

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).

Document Control Desk Attachment 6 Revision 0 RC-12-0177 Page 11 of 32

V. C. Summer Cycle 21 November 2012 Figure 1. Moderator Temperature Coefficient Versus Power Level V.C. Summer - Cycle 21 1.00 0.90 0.80 0

0.70 C

.1m 0.60 0

0.50 a-E 0.40 a

0 0.30 MU 0.20 0.10 0.00 0 10 20 30 40 50 60 70 80 90 100 Percent of Rated Thermal Power Document Control Desk Attachment RC-1 2-0177 7 Revision 0 Page 12 of 32

V. C. Summer Cycle 21 November 2012 Figure 2. Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 21 230 LALLLi~iWLLL1,LLLLLLLL 220 (0.5 1230n j1'T 210 200 (1.0, 194)ý 190 180 ! i i i i i i i i ! i i i i hr! i 1 1111 170 BANKC 160 I I I I I I I I i ljoý I I I I I , ! *  ! ! ! !! ! ! . . . ..  ! ! ? ! ! * ! ?

r- 150 .................... .......

0 0

140 .................... .........

a_ 130 :2:::::

a-s 120  ;. I; 4-.

U, 0~ 110 ý (0.0, 118) 100 &T I I I I I I 0w-(.9 90 "0 80 70 BANK ID 60 " ' ' ' ' = ' I I I I I I I I [ I I I ' EJ 50 1 11 1 1 lAr l I I I - 1 1 11 1 11 40 I lArl I I I I I H-FTT-T-l II UE1 I I I I I E 30 20 10 (0.048, 0) QV F-H LAP 102 steps 0 ov 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 Document Control Desk Attachment 8 Revision 0 RC-1 2-0177 Page 13 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Figure 3. Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 21 120

(-8,100)(+8, 100) 100 Unacceptable Unacceptable 80 0

0.

Acceptablej /

'R 60 a)

.b..

0 W-(-22, 50) +2,50) 40

_ _ + 4 + + + 4 -4 20 -4 4 + + 4 ~ + + ~ + 4- ~ 4 4 -~ -

0

-40 -30 -20 -10 0 10 20 30 40 Axial Flux Difference (%AI)

Document Control Desk Attachment 9 Revision 0 RC-1 2-0177 Page 14 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Figure 4. K(z) - Normalized FQ(z) as a Function of Core Height V. C. Summer - Cycle 21 1.10 1.00 0.90 0.80 0.70 LL. 0.60 0.50 0

Z 0.40 0.30 0.20 0.10 0.00 0 12 Bottom Core Height (Feet) Top Document Control Desk Attachment 10 Revision 0 RC-1 2-0177 Page 15 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 1. RAOC W(z) at 150 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.139 6.140 1.178 0.140 1.138 6.279 1.185 0.279 1.144 6.419 1.192 0.419 1.157 6.558 1.198 0.558 1.174 6.698 1.203 0.698 1.182 6.837 1.208 0.837 1.181 6.977 1.212 0.977 1.178 7.116 1.215 1.116 1.175 7.256 1.218 1.256 1.170 7.395 1.219 1.395 1.164 7.535 1.220 1.535 1.157 7.674 1.220 1.674 1.150 7.814 1.218 1.814 1.142 7.953 1.216 1.953 1.134 8.093 1.213 2.093 1.126 8.233 1.209 2.233 1.118 8.372 1.204 2.372 1.109 8.512 1.198 2.512 1.101 8.651 1.190 2.651 1.093 8.791 1.182 2.791 1.084 8.930 1.180 2.930 1.079 9.070 1.181 3.070 1.079 9.209 1.183 3.209 1.079 9.349 1.190 3.349 1.083 9.488 1.199 3.488 1.088 9.628 1.207 3.628 1.094 9.767 1.215 3.767 1.098 9.907 1.223 3.907 1.103 10.046 1.230 4.046 1.107 10.186 1.236 4.186 1.111 10.326 1.242 4.326 1.115 10.465 1.247 4.465 1.119 10.605 1.252 4.605 1.122 10.744 1.256 4.744 1.125 10.884 1.258 4.884 1.128 11.023 1.259 5.023 1.130 11.163 1.259 5.163 1.131 11.302 1.259 5.302 1.132 11.442 1.253 5.442 1.134 11.581 1.236 5.581 1.141 11.721 1.216 5.721 1.151 11.860 1.193 5.860 1.161 12.000 1.167 6.000 1.170 1 Document Control Desk Attachment I1 Revision 0 RC-1 2-0177 Page 16 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 2. RAOC W(z) at 3000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.256 6.140 1.127 0.140 1.255 6.279 1.135 0.279 1.258 6.419 1.143 0.419 1.267 6.558 1.150 0.558 1.278 6.698 1.157 0.698 1.281 6.837 1.163 0.837 1.276 6.977 1.169 0.977 1.269 7.116 1.174 1.116 1.261 7.256 1.178 1.256 1.251 7.395 1.182 1.395 1.240 7.535 1.185 1.535 1.227 7.674 1.187 1.674 1.214 7.814 1.188 1.814 1.199 7.953 1.189 1.953 1.185 8.093 1.189 2.093 1.170 8.233 1.188 2.233 1.154 8.372 1.187 2.372 1.140 8.512 1.183 2.512 1.127 8.651 1.177 2.651 1.116 8.791 1.173 2.791 1.105 8.930 1.174 2.930 1.096 9.070 1.180 3.070 1.088 9.209 1.190 3.209 1.082 9.349 1.201 3.349 1.082 9.488 1.211 3.488 1.082 9.628 1.222 3.628 1.083 9.767 1.231 3.767 1.084 9.907 1.240 3.907 1.086 10.046 1.249 4.046 1.087 10.186 1.256 4.186 1.089 10.326 1.262 4.326 1.090 10.465 1.268 4.465 1.091 10.605 1.272 4.605 1.092 10.744 1.274 4.744 1.093 10.884 1.275 4.884 1.093 11.023 1.276 5.023 1.094 11.163 1.275 5.163 1.094 11.302 1.272 5.302 1.095 11.442 1.264 5.442 1.096 11.581 1.250 5.581 1.099 11.721 1.233 5.721 1.103 11.860 1.212 5.860 1.110 12.000 1.188 6.000 1.118 1 1 Document Control Desk Attachment 12 Revision 0 RC-1 2-0177 Page 17 of 32

V. C. Summer Cycle 21 November 2012 Table 3. RAOC W(z) at 5000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.262 6.140 1.110 0.140 1.260 6.279 1.119 0.279 1.264 6.419 1.127 0.419 1.271 6.558 1.136 0.558 1.282 6.698 1.144 0.698 1.283 6.837 1.152 0.837 1.278 6.977 1.159 0.977 1.271 7.116 1.166 1.116 1.264 7.256 1.172 1.256 1.256 7.395 1.177 1.395 1.246 7.535 1.182 1.535 1.234 7.674 1.186 1.674 1.223 7.814 1.189 1.814 1.210 7.953 1.192 1.953 1.197 8.093 1.194 2.093 1.183 8.233 1.195 2.233 1.170 8.372 1.195 2.372 1.156 8.512 1.194 2.512 1.142 8.651 1.191 2.651 1.129 8.791 1.191 2.791 1.116 8.930 1.193 2.930 1.103 9.070 1.201 3.070 1.091 9.209 1.211 3.209 1.084 9.349 1.221 3.349 1.084 9.488 1.231 3.488 1.084 9.628 1.239 3.628 1.084 9.767 1.247 3.767 1.084 9.907 1.254 3.907 1.083 10.046 1.258 4.046 1.082 10.186 1.263 4.186 1.081 10.326 1.271 4.326 1.081 10.465 1.281 4.465 1.081 10.605 1.288 4.605 1.081 10.744 1.295 4.744 1.082 10.884 1.301 4.884 1.084 11.023 1.304 5.023 1.086 11.163 1.306 5.163 1.087 11.302 1.308 5.302 1.088 11.442 1.305 5.442 1.090 11.581 1.294 5.581 1.091 11.721 1.278 5.721 1.093 11.860 1.258 5.860 1.097 12.000 1.233 6.000 1.103 1 Document Control Desk Attachment 13 Revision 0 RC-12-0177 Page 18 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 4. RAOC W(z) at 8000 MWD/MITU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.300 6.140 1.110 0.140 1.298 6.279 1.118 0.279 1.301 6.419 1.125 0.419 1.308 6.558 1.133 0.558 1.318 6.698 1.140 0.698 1.319 6.837 1.147 0.837 1.314 6.977 1.154 0.977 1.307 7.116 1.160 1.116 1.298 7.256 1.166 1.256 1.288 7.395 1.171 1.395 1.275 7.535 1.175 1.535 1.261 7.674 1.179 1.674 1.247 7.814 1.181 1.814 1.231 7.953 1.183 1.953 1.215 8.093 1.185 2.093 1.199 8.233 1.186 2.233 1.182 8.372 1.186 2.372 1.166 8.512 1.185 2.512 1.149 8.651 1.181 2.651 1.133 8.791 1.180 2.791 1.117 8.930 1.181 2.930 1.102 9.070 1.187 3.070 1.089 9.209 1.195 3.209 1.079 9.349 1.204 3.349 1.079 9.488 1.213 3.488 1.079 9.628 1.220 3.628 1.080 9.767 1.227 3.767 1.080 9.907 1.233 3.907 1.081 10.046 1.236 4.046 1.081 10.186 1.239 4.186 1.083 10.326 1.244 4.326 .1.084 10.465 1.250 4.465 1.085 10.605 1.257 4.605 1.086 10.744 1.263 4.744 1.087 10.884 1.267 4.884 1.088 11.023 1.270 5.023 1.089 11.163 1.272 5.163 1.089 11.302 1.272 5.302 1.089 11.442 1.269 5.442 1.089 11.581 1.257 5.581 1.090 11.721 1.241 5.721 1.092 11.860 1.221 5.860 1.096 12.000 1.197 6.000 1.102 1 1 Document Control Desk Attachment 14 Revision 0 RC-1 2-0177 Page 19 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 5. RAOC W(z) at 10000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.288 6.140 1.115 0.140 1.287 6.279 1.122 0.279 1.290 6.419 1.129 0.419 1.297 6.558 1.136 0.558 1.308 6.698 1.143 0.698 1.309 6.837 1.150 0.837 1.305 6.977 1.156 0.977 1.298 7.116 1.161 1.116 1.290 7.256 1.166 1.256 1.280 7.395 1.170 1.395 1.268 7.535 1.174 1.535 1.254 7.674 1.177 1.674 1.240 7.814 1.179 1.814 1.225 7.953 1.180 1.953 1.209 8.093 1.181 2.093 1.193 8.233 1.181 2.233 1.177 8.372 1.180 2.372 1.161 8.512 1.178 2.512 1.144 8.651 1.174 2.651 1.128 8.791 1.171 2.791 1.118 8.930 1.171 2.930 1.109 9.070 1.176 3.070 1.101 9.209 1.183 3.209 1.095 9.349 1.189 3.349 1.094 9.488 1.196 3.488 1.093 9.628 1.202 3.628 1.093 9.767 1.207 3.767 1.093 9.907 1.211 3.907 1.093 10.046 1.213 4.046 1.093 10.186 1.217 4.186 1.093 10.326 1.223 4.326 1.093 10.465 1.230 4.465 1.093 10.605 1.236 4.605 1.093 10.744 1.241 4.744 1.093 10.884 1.245 4.884 1.092 11.023 1.247 5.023 1.092 11.163 1.248 5.163 1.091 11.302 1.247 5.302 1.091 11.442 1.244 5.442 1.091 11.581 1.231 5.581 1.093 11.721 1.215 5.721 1.096 11.860 1.195 5.860 1.101 12.000 1.171 6.000 1.108 1 Document Control Desk Attachment 15 Revision 0 RC-1 2-0177 Page 20 of 32

V. C. Summer Cycle 21 November 2012 Table 6. RAOC W(z) at 14000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.246 6.140 1.137 0.140 1.245 6.279 1.146 0.279 1.249 6.419 1.154 0.419 1.258 6.558 1.161 0.558 1.271 6.698 1.167 0.698 1.275 6.837 1.173 0.837 1.273 6.977 1.178 0.977 1.268 7.116 1.182 1.116 1.263 7.256 1.185 1.256 1.255 7.395 1.188 1.395 1.245 7.535 1.190 1.535 1.235 7.674 1.191 1.674 1.223 7.814 1.191 1.814 1.211 7.953 1.191 1.953 1.199 8.093 1.190 2.093 1.186 8.233 1.188 2.233 1.172 8.372 1.185 2.372 1.159 8.512 1.181 2.512 1.146 8.651 1.175 2.651 1.132 8.791 1.170 2.791 1.118 8.930 1.170 2.930 1.106 9.070 1.175 3.070 1.099 9.209 1.182 3.209 1.095 9.349 1.186 3.349 1.095 9.488 1.190 3.488 1.096 9.628 1.193 3.628 1.096 9.767 1.196 3.767 1.096 9.907 1.198 3.907 1.096 10.046 1.204 4.046 1.096 10.186 1.211 4.186 1.097 10.326 1.217 4.326 1.098 10.465 1.222 4.465 1.100 10,605 1.227 4.605 1.103 10.744 1.231 4.744 1.105 10.884 1.233 4.884 1.107 11.023 1.234 5.023 1.108 11.163 1.234 5.163 1.109 11.302 1.232 5.302 1.109 11.442 1.227 5.442 1.110 11.581 1.213 5.581 1.112 11.721 1.195 5.721 1.115 11.860 1.174 5.860 1.120 12.000 1.150 6.000 1.128 Document Control Desk Attachment 16 Revision 0 RC-12-0177 Page 21 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 7. RAOC W(z) at 20000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft)] W(z) 0.000 1.185 6.140 1.191 0.140 1.182 6.279 1.199 0.279 1.186 6.419 1.206 0.419 1.197 6.558 1.212 0.558 1.212 6.698 1.217 0.698 1.218 6.837 1.221 0.837 1.218 6.977 1.224 0.977 1.216 7.116 1.226 1.116 1.212 7.256 1.227 1.256 1.206 7.395 1.227 1.395 1.199 7.535 1.225 1.535 1.191 7.674 1.223 1.674 1.182 7.814 1.220 1.814 1.172 7.953 1.217 1.953 1.162 8.093 1.211 2.093 1.152 8.233 1.204 2.233 1.142 8.372 1.196 2.372 1.132 8.512 1.191 2.512 1.121 8.651 1.191 2.651 1.111 8.791 1.190 2.791 1.100 8.930 1.191 2.930 1.090 9.070 1.194 3.070 1.083 9.209 1.195 3.209 1.079 9.349 1.195 3.349 1.084 9.488 1.198 3.488 1.088 9.628 1.204 3.628 1.093 9.767 1.211 3.767 1.097 9.907 1.217 3.907 1.101 10.046 1.222 4.046 1.104 10.186 1.227 4.186 1.108 10.326 1.232 4.326 1.113 10.465 1.236 4.465 1.119 10.605 1.239 4.605 1.126 10.744 1.241 4.744 1.132 10.884 1.243 4.884 1.138 11.023 1.243 5.023 1.143 11.163 1.242 5.163 1.147 11.302 1.238 5.302 1.151 11.442 1.231 5.442 1.155 11.581 1.215 5.581 1.160 11.721 1.194 5.721 1.166 11.860 1.172 5.860 1.174 12.000 1.147 6.000 1.183 1 Document Control Desk Attachment 17 Revision 0 RC-1 2-0177 Page 22 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 8. RAOC FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 21 Cycle Burnup Maximum Decrease (MWDIMTU) inII.= FQ Margin 1008 1.0200 1180 1.0200 1352 1.0200 1523 1.0245 1695 1.0245 1867 1.0245 2038 1.0242 2210 1.0238 2382 1.0231 2553 1.0221 2725 1.0207 2896 1.0200 3068 1.0200 3240 1.0200 3411 1.0200 3583 1.0200 3755 1.0200 3926 1.0200 4098 1.0200 4270 1.0200 4441 1.0209 4613 1.0214 4785 1.0209 4956 1.0200 Document Control Desk Attachment 18 Revision 0 RC-1 2-0177 Page 23 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 9. BASELOAD W(z) at 150 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.126 6.140 1.063 0.140 1.127 6.279 1.062 0.279 1.128 6.419 1.062 0.419 1.129 6.558 1.062 0.558 1.131 6.698 1.063 0.698 1.131 6.837 1.065 0.837 1.130 6.977 1.067 0.977 1.129 7.116 1.069 1.116 1.128 7.256 1.071 1.256 1.126 7.395 1.072 1.395 1.125 7.535 1.074 1.535 1.123 7.674 1.075 1.674 1.120 7.814 1.077 1.814 1.118 7.953 1.078 1.953 1.115 8.093 1.079 2.093 1.112 8.233 1.080 2.233 1.109 8.372 1.081 2.372 1.105 8.512 1.082 2.512 1.102 8.651 1.083 2.651 1.098 8.791 1.084 2.791 1.094 8.930 1.085 2.930 1.090 9.070 1.085 3.070 1.086 9.209 1.086 3.209 1.082 9.349 1.087 3.349 1.080 9.488 1.087 3.488 1.079 9.628 1.088 3.628 1.079 9.767 1.088 3.767 1.078 9.907 1.089 3.907 1.077 10.046 1.089 4.046 1.077 10.186 1.089 4.186 1.077 10.326 1.090 4.326 1.076 10.465 1.090 4.465 1.076 10.605 1.091 4.605 1.076 10.744 1.091 4.744 1.075 10.884 1.092 4.884 1.075 11.023 1.092 5.023 1.074 11.163 1.092 5.163 1.073 11.302 1.093 5.302 1.072 11.442 1.093 5.442 1.071 11.581 1.092 5.581 1.070 11.721 1.092 5.721 1.069 11.860 1.092 5.860 1.067 12.000 1.092 6.000 1.065 Document Control Desk Attachment 19 Revision 0 RC-12-0177 Page 24 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 10. BASELOAD W(z) at 3000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.099 6.140 1.059 0.140 1.100 6.279 1.057 0.279 1.101 6.419 1.056 0.419 1.103 6.558 1.054 0.558 1.104 6.698 1.051 0.698 1.105 6.837 1.049 0.837 1.105 6.977 1.049 0.977 1.106 7.116 1.050 1.116 1.106 7.256 1.052 1.256 1.105 7.395 1.055 1.395 1.105 7.535 1.057 1.535 1.105 7.674 1.059 1.674 1.104 7.814 1.061 1.814 1.104 7.953 1.062 1.953 1.103 8.093 1.064 2.093 1.102 8.233 1.066 2.233 1.101 8.372 1.068 2.372 1.099 8.512 1.069 2.512 1.098 8.651 1.071 2.651 1.096 8.791 1.073 2.791 1.094 8.930 1.074 2.930 1.093 9.070 1.076 3.070 1.091 9.209 1.077 3.209 1.088 9.349 1.078 3.349 1.086 9.488 1.080 3.488 1.084 9.628 1.081 3.628 1.082 9.767 1.082 3.767 1.081 9.907 1.084 3.907 1.079 10.046 1.085 4.046 1.078 10.186 1.086 4.186 1.077 10.326 1.087 4.326 1.075 10.465 1.088 4.465 1.074 10.605 1.089 4.605 1.072 10.744 1.090 4.744 1.071 10.884 1.091 4,884 1.070 11.023 1.092 5.023 1.069 11.163 1.093 5.163 1.068 11.302 1.094 5.302 1.067 11.442 1.094 5.442 1.066 11.581 1.094 5.581 1.065 11.721 1.094 5.721 1.063 11.860 1.094 5.860 1.062 12.000 1.094 6.000 1.061 Document Control Desk Attachment 20 Revision 0 RC-12-0177 Page 25 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 11. BASELOAD W(z) at 5000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.096 6.140 1.057 0.140 1.097 6.279 1.056 0.279 1.098 6.419 1.054 0.419 1.100 6.558 1.053 0.558 1.101 6.698 1.050 0.698 1.102 6.837 1.048 0.837 1.103 6.977 1.046 0.977 1.103 7.116 1.047 1.116 1.103 7.256 1.050 1.256 1.103 7.395 1.053 1.395 1.103 7.535 1.055 1.535 1.103 7.674 1.057 1.674 1.103 7.814 1.058 1.814 1.103 7.953 1.060 1.953 1.102 8.093 1.062 2.093 1.101 8.233 1.064 2.233 1.100 8.372 1.066 2.372 1.099 8.512 1.067 2.512 1.098 8.651 1.069 2.651 1.097 8.791 1.071 2.791 1.095 8.930 1.072 2.930 1.094 9.070 1.074 3.070 1.092 9.209 1.075 3.209 1.090 9.349 1.077 3.349 1.088 9.488 1.078 3.488 1.086 9.628 1.079 3.628 1.084 9.767 1.081 3.767 1.082 9.907 1.082 3.907 1.081 10.046 1.083 4.046 1.079 10.186 1.085 4.186 1.078 10.326 1.086 4.326 1.077 10.465 1.087 4.465 1.075 10.605 1.088 4.605 1.074 10.744 1.089 4.744 1.072 10.884 1.090 4.884 1.070 11.023 1.091 5.023 1.069 11.163 1.092 5.163 1.067 11.302 1.093 5.302 1.065 11.442 1.093 5.442 1.063 11.581 1.093 5.581 1.062 11.721 1.093 5.721 1.061 11.860 1.093 5.860 1.060 12.000 1.094 6.000 1.059 Document Control Desk Attachment 21 Revision 0 RC-12-0177 Page 26 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 12. BASELOAD W(z) at 8000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.100 6.140 1.059 0.140 1.101 6.279 1.057 0.279 1.102 6.419 1.055 0.419 1.104 6.558 1.053 0.558 1.106 6.698 1.051 0.698 1.107 6.837 1.050 0.837 1.107 6.977 1.049 0.977 1.108 7.116 1.051 1.116 1.108 7.256 1.053 1.256 1.108 7.395 1.055 1.395 1.108 7.535 1.057 1.535 1.107 7.674 1.059 1.674 1.107 7.814 1.061 1.814 1.106 7.953 1.063 1.953 1.105 8.093 1.064 2.093 1.104 8.233 1.066 2.233 1.103 8.372 1.068 2.372 1.102 8.512 1.069 2.512 1.100 8.651 1.071 2.651 1.099 8.791 1.072 2.791 1.097 8.930 1.073 2.930 1.095 9.070 1.075 3.070 1.093 9.209 1.076 3.209 1.091 9.349 1.077 3.349 1.089 9.488 1.078 3.488 1.086 9.628 1.079 3.628 1.084 9.767 1.081 3.767 1.082 9.907 1.082 3.907 1.081 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 1.075 10.605 1.087 4.605 1.073 10.744 1.088 4.744 1.072 10.884 1.089 4.884 1.070 11.023 1.090 5.023 1.069 11.163 1.090 5.163 1.068 11.302 1.091 5.302 1.067 11.442 1.092 5.442 1.065 11.581 1.092 5.581 1.064 11.721 1.091 5.721 1.063 11.860 1.092 5.860 1.062 12.000 1.092 6.000 1.060 1 Document Control Desk Attachment 22 Revision 0 RC-1 2-0177 Page 27 of 32

V. C. Summer Cycle 21 November 2012 Table 13. BASELOAD W(z) at 10000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.109 6.140 1.061 0.140 1.110 6.279 1.058 0.279 1.111 6.419 1.056 0.419 1.113 6.558 1.054 0.558 1.114 6.698 1.053 0.698 1.115 6.837 1.053 0.837 1.115 6.977 1.053 0.977 1.116 7.116 1.054 1.116 1.116 7.256 1.056 1.256 1.115 7.395 1.058 1.395 1.115 7.535 1.060 1.535 1.114 7.674 1.062 1.674 1.114 7.814 1.064 1.814 1.113 7.953 1.065 1.953 1.111 8.093 1.067 2.093 1.110 8.233 1.068 2.233 1.108 8.372 1.069 2.372 1.107 8.512 1.071 2.512 1.105 8.651 1.072 2.651 1.102 8.791 1.073 2.791 1.100 8.930 1.074 2.930 1.097 9.070 1.075 3.070 1.095 9.209 1.076 3.209 1.092 9.349 1.077 3.349 1.089 9.488 1.078 3.488 1.086 9.628 1.079 3.628 1.083 9.767 1.079 3.767 1.082 9.907 1.080 3.907 1.081 10.046 1.081 4.046 1.080 10.186 1.082 4.186 1.079 10.326 1.083 4.326 1.078 10.465 1.084 4.465 1.077 10.605 1.084 4.605 1.076 10.744 1.085 4.744 1.075 10.884 1.086 4.884 1.074 11.023 1.087 5.023 1.073 11.163 1.087 5.163 1.072 11.302 1.088 5.302 1.070 11.442 1.088 5.442 1.069 11.581 1.088 5.581 1.068 11.721 1.088 5.721 1.066 11.860 1.088 5.860 1.064 12.000 1.088 6.000 1.063 Document Control Desk Attachment 23 Revision 0 RC-12-0177 Page 28 of 32

V. C. Summer Cycle 21 November 2012 Table 14. BASELOAD W(z) at 14000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.122 6.140 1.059 0.140 1.123 6.279 1.058 0.279 1.124 6.419 1.058 0.419 1.125 6.558 1.057 0.558 1.126 6.698 1.058 0.698 1.127 6.837 1.060 0.837 1.127 6.977 1.062 0.977 1.127 7.116 1.064 1.116 1.127 7.256 1.066 1.256 1.126 7.395 1.067 1.395 1.125 7.535 1.069 1.535 1.124 7.674 1.070 1.674 1.123 7.814 1.071 1.814 1.121 7.953 1.072 1.953 1.119 8.093 1.073 2.093 1.117 8.233 1.074 2.233 1.114 8.372 1.075 2.372 1.111 8.512 1.075 2.512 1.108 8.651 1.076 2.651 1.105 8.791 1.076 2.791 1.102 8.930 1.078 2.930 1.098 9.070 1.080 3.070 1.094 9.209 1.083 3.209 1.090 9.349 1.085 3.349 1.087 9.488 1.087 3.488 1.084 9.628 1.090 3.628 1.081 9.767 1.092 3.767 1.080 9.907 1.094 3.907 1.079 10.046 1.095 4.046 1.077 10.186 1.097 4.186 1.076 10.326 1.098 4.326 1.074 10.465 1.099 4.465 1.073 10.605 1.100 4.605 1.073 10.744 1.101 4.744 1.072 10.884 1.102 4.884 1.071 11.023 1.102 5.023 1.070 11.163 1.102 5.163 1.069 11.302 1.102 5.302 1.068 11.442 1.102 5.442 1.067 11.581 1.101 5.581 1.066 11.721 1.100 5.721 1.064 11.860 1.099 5.860 1.063 12.000 1.099 6.000 1.061 Document Control Desk Attachment 24 Revision 0 RC-1 2-0177 Page 29 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 15. BASELOAD W(z) at 20000 MWD/MTU V. C. Summer - Cycle 21 Core Height (ft) W(z) Core Height (ft) W(z) 0.000 1.150 6.140 1.068 0.140 1.151 6.279 1.071 0.279 1.152 6.419 1.073 0.419 1.153 6.558 1.075 0.558 1.154 6.698 1.077 0.698 1.154 6.837 1.078 0.837 1.154 6.977 1.080 0.977 1.152 7.116 1.081 1.116 1.151 7.256 1.082 1.256 1.149 7.395 1.083 1.395 1.147 7.535 1.084 1.535 1.144 7.674 1.084 1.674 1.141 7.814 1.085 1.814 1.138 7.953 1.085 1.953 1.134 8.093 1.085 2.093 1.129 8.233 1.085 2.233 1.125 8.372 1.085 2.372 1.120 8.512 1.085 2.512 1.114 8.651 1.085 2.651 1.109 8.791 1.084 2.791 1.103 8.930 1.084 2.930 1.097 9.070 1.083 3.070 1.091 9.209 1.083 3.209 1.086 9.349 1.085 3.349 1.082 9.488 1.087 3.488 1.080 9.628 1.090 3.628 1.078 9.767 1.092 3.767 1.077 9.907 1.094 3.907 1.076 10.046 1.096 4.046 1.074 10.186 1.098 4.186 1.073 10.326 1.099 4.326 1.071 10.465 1.100 4.465 1.070 10.605 1.101 4.605 1.069 10.744 1.102 4.744 1.069 10.884 1.103 4.884 1.068 11.023 1.103 5.023 1.068 11.163 1.103 5.163 1.068 11.302 1.103 5.302 1.067 11.442 1.105 5.442 1.066 11.581 1.108 5.581 1.064 11.721 1.105 5.721 1.063 11.860 1.100 5.860 1.063 12.000 1.098 6.000 1.065 Document Control Desk Attachment 25 Revision 0 RC-1 2-0177 Page 30 of 32

V. C. Summer Cycle 21 November 2012 V. C. Summer Cycle 21 November 2012 Table 16. BASE LOAD FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 21 Cycle Burnup Maximum Decrease (MWD/MTU) in FQ Margin 837 1.0200 1008 1.0233 1180 1.0309 1352 1.0368 1523 1.0415 1695 1.0447 1867 1.0462 2038 1.0458 2210 1.0439 2382 1.0413 2553 1.0384 2725 1.0353 2896 1.0320 3068 1.0289 3240 1.0261 3411 1.0236 3583 1.0215 3755 1.0200 Document Control Desk Attachment 26 Revision 0 RC-12-0177 Page 31 of 32

. P .1 .

V. C. Summer Cycle 21 November 2012 Figure 5. RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 21 30.0 29.8 29.6 29.4 a.

(.9 29.2 0

u- 29.0 0

I--

('3

• 28.8 28.6 28.4 28.2 28.0 4-0.90 0.95 1.00 1.05 1.10 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.

Document Control Desk Attachment 27 Revision 0 RC-12-0177 Page 32 of 32