ML081500015

Core Operating Limits Report for Cycle 18

ML081500015
Person / Time
Site:	Summer
Issue date:	05/25/2008
From:	Archie J South Carolina Electric & Gas Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML081500015 (27)

Text

Jeffrey B. Archie Vice President,Nuclear Operations 803,345.4214 A SCANA COMPANY May 25,2008 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 CORE OPERATING LIMITS REPORT (COLR)

FOR CYCLE 18 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 Cycle 18 Core Operating Limits Report (COLR).

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

JEF/JBA/dr Attachment NOTE: Attachment is on file in FileNet c: Without Attachment unless noted K. B. Marsh S. A. Byrne N. S. Carns J. H. Hamilton R. J. White L. A. Reyes (w/atteichment)

R. E. Martin (w/atteichment)

NRC Resident Inspector (w/atteichment)

Winston & Strawn NSRC RTS (LTD 320)

File (818.23-1, RR 5000)

DMS (RC-08-0075)

SCE&G I Virgil C.Summer Nuclear Station

• P.O. Box 88 .Jenkinsville, South Carolina 29065 .T (803) 345.5209

• www.sceg.com

/A9A

SOUTH CAROLINA ELECTRIC & GAS COMPANY VIRGIL C. SUMMER NUCLEAR STATION CORE OPERATING LIMITS REPORT FOR CYCLE 18 REVISION 0 APRIL 2008

LIST OF EFFECTIVE PAGES PAGE REVISION 1 0 1i 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

Table of Contents Section Page 1.0 Core Operating Limits Report I 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'H (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 18 11 Table 2. RAOC W(z) at 3000 MWD/MTU V. C. Summer - Cycle 18 12 Table 3. RAOC W(z) at 10000 MWD/MTU V. C. Summer - Cycle 18 13 Table 4. RAOC W(z) at 20000 MWD/MTU V. C. Summer - Cycle 18 14 Table 5. RAOC FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 18 15 Table 6. Baseload W(z) at 150 MWD/MTU V. C. Summer - Cycle 18 16 Table 7. Baseload W(z) at 3000 MWD/MTU V. C. Summer - Cycle 18 17 Table 8. Baseload W(z) at 10000 MWD/MTU V. C. Summer - Cycle 18 18 Table 9. Baseload W(z) at 20000 MWD/MTU V. C. Summer - Cycle 18 19 Table 10. Baseload FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 18 20 ii Revision 0

List of Figures Fil~ure Pag~e Figure 1. Moderator Temperature Coefficient Versus Power Level V. C. Summer - Cycle 18 7 Figure 2. Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 18 8 Figure 3. Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 18 9 Figure 4. K(z) - Normalized FQ(z) as a Function of Core Height V. C. Summer - Cycle 18 10 Figure 5. RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 18 21 iii Revision 0

V. C. Summer Cycle 18 April 2008 1.0 Core Operating Limits Report This Core. Operating Limits Report (COLR) for V. C. Summer Station Cycle 18 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 I Revision 0

V. C. Summer Cycle 18 April 2008 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 -5x10-4 Ak/k/°F (-50 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/0 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

-4.1x10 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 230 steps.

2 Revision 0

V. C. Summer Cycle 18 April 2008 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 RAOC operation for Cyclel8 are shown in Figure 3.

2.4.2 The Axial Flux Difference (AFD) target band during base load operations for Cycle 18 is:

BOL - EOL (0 - 22,800 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):

FRTP FQ(Z) _ P x K(Z) for P > 0.5

-- x K(Z) forP < 0.5 where: P Thermal Power FQ (Z) _*

0.5 Rated Thermal Power 2.5.1 F&RTP =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, 10000, and 20000 MWD/MTU are shown in Tables 1 through 4, 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 5 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 bumups that are outside the range of Table 5.

3 Revision 0

V. C. Summer Cycle 18 April 2008 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, 10000, and 20000 MWD/MTU are shown in Tables 6 through 9, respectively.

This information is sufficient to determine W(z)rL versus core height for bumups in the range of 0 MWD/MTU to EOL bumup through the use of three point interpolation. Table 10 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.

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

FN Thermal Power R =j -Nwhere: P - he

,H V RTP x (I + PFNH x (I - P)) Rated Thermal Power, 2.6.1 FRN = 1.62 2.6.2 PEA. = 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):

1 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:

U*

AH U FAH = 1.0+

100.0 where: U AH = Uncertainty for enthalpy rise as defined in equation (5'19) in Reference 1.

4 Revision 0

V. C. Summer Cycle 18 April 2008 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+ U 100.0 *.Ue where: UQ Uncertainty for power peaking factor as defined in equation (5-19) in Reference 1.

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 = FAHm where: UFA, = 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 =*Uq u. Ue where: Uq, = Base FQ measurement uncertainty.

= 1.05 Ue = Engineering uncertainty factor.

='1.03 5 Revision 0 -

V. C. Summer Cycle 18 April 2008 3.0 References

1) WCAP-12473-A (Non-Proprietary), "BEACON Core Monitoring and Operations Support System," August, 1994.

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 18 April 2008 Figure 1. Moderator Temperature Coefficient Versus Power Level V.C. Summer - Cycle 18 0.90 ____'_'__

Unacceptable Operation 0.80 L.

0.70 ,

0.60

.2 Acceptable rOperation 0

oo 0.50 0

I--

I,-

0.40 0 0.30 0

C-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 18 April 2008 Figure 2. Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 18 230 220 (0.55,230) 210 200 190 180 I Lor I ..... .... Ur I I I 170 BANK C 160 I'VI I C 150 4-.

0 0 140 Y) 130 OF I or 0 120 .0e 110 (0.0,11 M0. 100 90 0

o 80 70 BANK D 60 11 T77 #

50 40 30 TTTT' 20 __j ------

00 OVERLAP= 102 steps 10 (0.048.10) 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 18 April 2008 Figure 3. Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 18 120 100 80 a.

0 60 4-0 4-t.)

40 20 0

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

V. C. Summer Cycle 18 April 2008 Figure 4. K(z) - Normalized FQ(z) as a Function of Core Height V. C. Summer - Cycle 18 1.10 (0.0, 1.0) (6.0,1.0) 1.00 (12.0, 0.925) 0.90 0.80 0.70 w

0£ I-¢ u- 0.60 N

E 0.50 L-0 Z

N: 0.40 ttt 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 18 Ap'ril 2008 Table 1. RAOC W(z) at 150 MWD/MTU V. C. Summer - Cycle 18 CoreI(ft)

Height W()(ft)

W(z) Core Height WZ W(z) 0.000 1.132 6.140 1.167 0.140 1.130 6.279 1.174 0.279 1.136 6.419 1.181 0.419 1.149 6.558 1.187 0.558 1.166 6.698 1.193 0.698 1.174 6.837 1.197 0.837 1.173 6.977 1.202 0.977 1.170 7.116 1.205 1.116 1.167 7.256 1.207 1.256 1.163 7.395 1.209 1.395 1.157 7.535 1.210 1.535 1.151 7.674 1.210 1.674 1.144 7.814 1.209 1.814 1.138 7.953 1.208 1.953 1.131 8.093 1.205 2.093 1.123 8.233 1.202 2.233 1.116 8.372 1.197 2.372 1.109 8.512 1.191 2.512 1.104 8.651 1.183 2.651 1.100 8.791 1.176 2.791 1.097 8.930 1.173 2.930 1.096 9.070 1.174 3.070 1.095 9.209 1.175 3.209 1.094 9.349 1.178 3.349 1.095 9.488 1.181 3.488 1.097 9.628 1.182 3.628 1.098 9.767 1.182 3.767 1.099 9.907 1.182 3.907 1.100 10.046 1.183 4.046 1.102 10.186 1.187 4.186 1.105 10.326 1.193 4.326 1.108 10.465 1.199 4.465 1.111 10.605 1.204 4.605 1.114 10.744 1.208 4.744 1.117 10.884 1.212 4.884 1.119 11.023 1.214 5.023 1.121 11.163 1.216 5.163 1.122 11.302 1.216 5.302 1.123 11.442 1.213 5.442 1.126 11.581 1.199 5.581 1.132 11.721 1.182 5.721 1.142 11.860 1.168 5.860 1.151 12.000 1.157 6.000 1.160 1 1 I1I Revision 0

V. C. Summer Cycle 18 April 2008 Table 2. RAOC W(z) at 3000 MWD/MTU V. C. Summer - Cycle 18 Core Height W(z) Core Height W(z)

(ft) (ft) 0.000 1.290 6.140 1:127 0.140 1.289 6.279 1.136 0.279 1.292 6.419 1.144 0.419 1.301 6.558 1.152 0.558 1.312 6.698 1.159 0.698 1.315 6.837 1.166 0.837 1.309 6.977 1.172 0.977 1.301 7.116 1.177 1.116 1.293 7.256 1.182 1.256 1.282 7.395 1.186 1.395 1.270 7.535 1.190 1.535 1.257 7.674 1.192 1.674 1.243 7.814 1.194 1.814 1.228 7.953 1.195 1.953 1.212 8.093 1.196 2.093 1.196 8.233 1.195 2.233 1.180 8.372 1.194 2.372 1.164 8.512 1.191 2.512 1.148 8.651 1.186 2.651 1.132 8.791 1.185 2.791 1.118 8.930 1.184 2.930 1.108 9.070 1.192 3.070 1.102 9.209 1.200 3.209 1.099 9.349 1.206 3.349 1.099 9.488 1.212 3.488 1.099 9.628 1.216 3.628 1.099 9.767 1.219 3.767 1.099 9.907 1.220 3.907 1.098 10.046 1.223 4.046 1.098 10.186 1.227 4.186 1.097 10.326 1.233 4.326 1.097 10.465 1.239 4.465 1.096 10.605 1.243 4.605 1.095 10.744 1.246 4.744 1.093 10.884 1.248 4.884 1.091 11.023 1.248 5.023 1.090 11.163 1.246 5.163 1.090 11.302 1.243 5.302 1.091 11.442 1.241 5.442 1.093 11.581 1.230 5.581 1.096 11.721 1.216 5.721 1.102 11.860 1.205 5.860 1.109 12.000 1.194 6.000 1.118 12 Revision 0

V. C. Summer Cycle 18 April 2008 Table 3. RAOC W(z) at 10000 MWD/MTU V. C. Summer - Cycle 18 Core Height W(z) Core Height W(z) 0.000 1.284 6.140 1.116 0.140 1.283 6.279 1.125 0.279 1.286 6.'419 1.132 0.419 1.294 6.558 1.139 0.558 1.304 6.698 1.146 0.698 1.306 6.837 1.152 0.837 1.302 6.977 1.157 0.977 1.295 7.116 1.162 1.116 1.288 7.256 1.166 1.256 1.278 7.395 1.170 1.395 1.266 7.535 1.173 1.535 1.253 7.674 1.175 1.674 1.239 7.814 1.176 1.814 1.224 7.953 1.177 1.953 1.209 8.093 1.177 2.093 1.193 8.233 1.177 2.233 1.178 8.372 1.175 2.372 1.162 8.512 1.172 2.512 1.145 8.651 1.168 2.651 1.131 8.791 1.164 2.791 1.121 8.930 1.164 2.930 1.112 9.070 1.168 3.070 1.104 9.209 1.175 3.209 1.098 9.349 1.182 3.349 1.097 9.488 1.188 3.488 1.096 9.628 1.194 3.628 1.096 9.767 1.200 3.767 1.095 9.907 1.204 3.907 1.095 10.046 1.206 4.046 1.095 10.186 1.209 4.186 1.095 10.326 1.215 4.326 1.095 10.465 1.223 4.465 1.094 10.605 1.229 4.605 1.094 10.744 1.234 4.744 1.093 10.884 1.239 4.884 1.093 11.023 1.242 5.023 1.092 11.163 1.243 5.163 1.091 11.302 1.244 5.302 1.090 11.442 1.242 5.442 1.090 11.581 1.231 5.581 1.091 11.721 1.218 5.721 1.094 11.860 1.207 5.860 1.099 12.000 1.196 6.000 1.107 13 Revision 0

V. C. Summer Cycle 18 April 2008 Table 4. RAOC W(z) at 20000 MWD/MTU V. C. Summer - Cycle 18 Core Height W(z) Core Height W(z)

Wft) Wft) 0.000 1.183 6.140 1.176 0.140 1.180 6.279 1.184 0.279 1.184 6.419 1.191 0.419 1.195 6.558 1.197 0.558 .1.210 6.698 1.202 0.698 1.216 6.837 1.206 0.837 1.216 6.977 1.210 0.977 1.213 7.116 1.212 1.116 1.209 7.256 1.214 1.256 1.203 7.395 1.215 1.395 1.196 7.535 1.214 1.535 1.187 7.674 1.213 1.674 1.178 7.814 1.211 1.814 1.169 7.953 1.208 1.953 1.159 8.093 1.204 2.093 1.149 8.233 1.198 2.233 1.138 8.372 1.191 2.372 1.128 8.512 1.186 2.512 1.117 8.651 1.187 2.651 1.106 8.791 1.186 2.791 1.094 8.930 1.187 2.930 1.088 9.070 1.190 3.070 1.088 9.209 1.193 3.209 1.089 9.349 1.195 3.349 1.093 9.488 1.196 3.488 1.098 9.628 1.197 3.628 1.103 9.767 1.197 3.767 1.108 9.907 1.195 3.907 1.112 10.046 1.192 4.046 1.116 10.186 1.189 4.186 1.120 10.326 1.190 4.326 1.124 10.465 1.193 4.465 1.126 10.605 , 1.197 4.605 1.129 10.744 1.201 4.744 1.132 10.884 1.203 4.884 1.136 11.023 1.205 5.023 1.140 11.163 1.205 5.163 1.144 11.302 1.204 5.302 1.148 11.442 1.199 5.442 1.151 11.581 1.186 5ý581 1.153 11.721 1.170 5.721 1.156 11.860 1.158 5.860 1.160 12.000 1.147 6.000 1.167 14 Revision 0

V. C. Summer Cycle 18 April 2008 Table 5. RAOC FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 18 Maximum Cycle Burnup Decrease (MWD/MTU) in FQ Margin 1010 1.0200 1182 1.0223 1355 1.0222 1527 1.0222 1699 1.0223 1871 1.0226 2043 1.0235 2215 1.0247 2387 1.0258 2559 1.0267 2731 1.0273 2903 1.0276 3075 1.0274 3247 1.0266 3420 1.0253 3592 1.0236 3764 1.0216 3936 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 burnups.

15 Revision 0

V. C. Summer Cycle 18 April 2008 Table 6. BASELOAD W(z) at 150 MWD/MTU V. C. Summer - Cycle 18 Core Height W(z) Core Height W(z) 0.000 1.121 6.140 1.064 0.140 1.122 6.279 1.061 0.279 1.123 6.419 1.059 0.419 1.124 6.558 1.057 0.558 1.126 6.698 1.057 0.698 1.126 6.837 1.060 0.837 1.125 6.977 1.062 0.977 1.124 7.116 1.064 1.116 1.123 7.256 1.066 1.256 1.122 7.395 1.068 1.395 1.121 7.535 1.069 1.535 1.119 7.674 1.071 1.674 1.117 7.814 1.073 1.814 1.115 7.953 1.074 1.953 1.112 8.093 1.075 2.093 1.110 8.233 I 1.077 2.233 1.107 8.372 1.078 2.372 1.104 8.512 1.079 2.512 1.101 8.651 1.080 2.651. 1.098 8.791 1.081 2.791 1.095 8.930 1.082 2.930 1.091 9.070 1.083 3.070 1.088 9.209 1.083 3.209 1.084 9.349 1.084 3.349 1.082 9.488 1.085 3.488 1.080 9.628 1.086 3.628 1.079 9.767 1.086 3.767 1.078 9.907 1.087 3.907 1.078 10.046 1.087 4.046 1.077 10.186 1.088 4.186 1.077 10.326 1.089 4.326 1.077 10.465 1.089 4.465 1.076 10.605 1.090 4.605 1.076 10.744 1.091 4.744 1.075 10.884 1.091 4.884 1.075 11.023 1.092 5.023 1.074 11.163 1.092 5.163 1.073 11.302 1.092 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 1.068 11.860 1.092 5.860 1.067 12.000 1.092 6.000 1.065 16 Revision 0

V. C. Summer Cycle 18 April 2008 Table 7. BASELOAD W(z) at 3000 MWD/MTU V. C. Summer - Cycle 18 Core Height W(z) Core Height W(z)

(ft) (ft) 0.000 1.096 6.140 1.059 0.140 1.097 6.279 1.058 0.279 1.098 6.419 1.056 0.419 1.100 6.558 1.054 0.558 1.102 6.698 1.051 0.698 1.103 6.837 1.049 0.837 1.103 6.977 1.047 0.977 1.103 7.116 1.048 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 1.102 7.953 1.060 1.953 1.101 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 1.068 2.512 1.097 8.651 1.069 2.651 1.096 8.791 4 1.071 2.791 1.094 8.930 1.073 2.930 1.093 9.070 1.074 3.070 1.091 9.209 1.076 3.209 1.089 9.349 1.077 3.349 1.087 9.488 1.079 3.488 1.085 9.628 1.080 3.628 1.083 9.767 1.081 3.767 1.081 9.907 1.083 3.907 1.080 10.046 1.084 4.046 1.079 10.186 1.085 4.186 1.077 10.326 1.086 4.326 1.076 10.465 1.088 4.465 1.075 10.605 1.089 4.605 1.073 10.744 1.090 4.744 1.072 10.884 1.091 4.884 1.071 11.023 1.092 5.023 1.070 11.163 1.092 5.163 1.068 11.302 1.093 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 1.064 11.860 1.094 5.860 1.062 12.000 1.094 6.000 1.061

.17 Revision 0

V. C. Summer Cycle 18 April 2008 Table 8. BASELOAD W(z) at 10000 MWD/MTU V. C. Summer - Cycle 18 Core Height W(z) Core Height W(z)

(ft) (ft) 0.000 1.108 6.140 1.061 0.140 1.109 6.279 1.059 0.279 1.110 6.419 1.056 0.419 1.111 6.558 1.054 0.558 1.113 6.698 1.052 0.698 1.114 6.837 1.052 0.837 1.114 6.977 1.052 0.977 1.114 7.116 1.053 1.116 1.114 7.256 1.055 1.256 1.114 7.395 1.058 1.395 1.114 7.535 1.060 1.535 1.113 7.674 1.061 1.674 1.112 7.814 1.063 1.814 1.111 7.953 1.064 1.953 1.110 8.093 1.066 2.093 1.109 8.233 , 1.067 2.233 1.108 8.372 1.069

.2.372 1.106 8.512 1.070 2.512 1.104 8.651 1.071 2.651 1.102 8.791 1.072 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 1.078 3.628 1.084 9.767 1.079 3.767 1.082 9.907 1.080 3.907 1.082 10.046 1.081 4.046 1.081 10.186 1.082 4.186 1.080 10.326 1.083 4.326 1.079 10.465 1.084 4.465 1.078 10.605 1.084 4.605 1.077 10.744 1.085 4.744 1.076 10.884 1.086 4.884 1.075 11.023 1.087 5.023 1.073 11.163 1.087 5.163 1.072 11.302 . 1.088 5.302 1.071 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 1.065 12.000 1.089 6.000 1.063 18 Revision 0

V. C. Summer Cycle 18 April 2008 Table 9. BASELOAD W(z) at 20000 MWD/MTU V. C. Summer - Cycle 18 Core Height W(z) Core Height W(z)

Wfz) Wfz) 0.000 1.146 6.140 1.065 0.140 1.147 6.279 1.067 0.279 1.148 6.419 1.069 0.419 1.149 6.558 1.071 0.558 1.150 6.698 1.072 0.698 1.151 6.837 1.074 0.837 1.150 6.977 1.075 0.977 1.149 7.116 1.076 1.116 1.148 7.256 1.077 1.256 1.146 7.395 1.078 1.395 1.144 7.535 1.079 1.535 1.141 7.674 1.079 1.674 1.139 7.814 . 1.080 1.814 1.135 7.953 1.080 1.953 1.132 8.093 1.080 2.093 1.128 8.233 1.080 2.233 1.123 8.372 1.081 2.372 1.119 8.512 1.081 2.512 1.114 8.651 1.084 2.651 1.109 8.791 1.088 2.791 1.103 8.930 , 1.092 2.930 1.098 9.070 . 1.095 3.070 1.092 9.209 1.098 3.209 1.087 9.349 1.101 3.349 1.084 9.488 1.104 3.488 1.082 9.628 1.106 3.628 1.080 9.767 1.108 3.767 1.079 9.907 1.110 3.907 1.077 10.046 1.112 4.046 1.076 10.186 1.114 4.186 1.074 10.326 1.115 4.326 1.073 10.465 1.116 4.465 1.072 10.605 1.117 4.605 1.071 10.744 1.118 4.744 1.071 10.884 1.119 4.884 1.070 11.023 1.119 5.023 1.069 11.163 1.119 5.163 1.069 11.302 1.119 5.302 1.068 11.442 1.119 5.442 1.067 11.581 1.117 5.581 1.065 11.721 1.116 5.721 1.063 11.860 1.115 5.860 1.063 12.000 1.115 6.000 1.064 19 Revision 0

V. C. Summer Cycle 18 April 2008 Table 10. BASE LOAD FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 18 Maximum Cycle Burnup Decrease (MWD/MTU) in FQ Margin 1182 1.0200 1355 1.0224 1527 1.0283 1699 1.0314 1871 1.0329 2043 1.0349 2215 1.0375 2387 1.0404 2559 1.0426 2731 1.0438 2903 1.0439 3075 1.0429 3247 1.0409 3420 1.0380 3592 1.0351 3764 1.0320 3936 1.0288 4108 1.0256 4280 1.0225 4452 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 burnups.

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V. C. Summer Cycle 18 April 2008 Figure 5. RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 18

30. ___ __i ,_ --

2 9 .6 I .. . .[ -

" - - - '1 i -___

2 9 .2 -- -- , ---- ----- '_ -

E 90 -

294___ --

Acceptable__ Operation Region*O

_ -_. --. __ -t- __ Li.__

Unacceptable __

peration Region/

,,28.8 2.2_ _ __ _ _ L (1.00 ?J8.36_

_ _ _ 28.36) -_

_ _ _ _- -- I -- i_ _ 1- -

28.62 28.0 -1_-

28.2 I -- . . ..

I [- -- .. _ _ _

0.9 09 ,

-- I -

_1.00 t I_ *- 1 i_

1.10 2804__ !_ _ __ _ - _1  ! I_

0.900.95(1.00 , 28.36).1 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.

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