Text

Core Operating Limits Report (COLR) for Cycle 23
	ML15335A067
Person / Time
Site:	Summer
Issue date:	11/25/2015
From:	Gatlin T; South Carolina Electric & Gas Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	RC-15-0188
	Download: ML15335A067 (33)
	v • d • e

Thomas D. Gatlin Vice President, Nuclear Operations 803.345.4342 SsA COMPANY November 25, 2015 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Dear Sir I Madam:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION (UNIT 1)

DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 23 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 23.

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

Very truly yours Thomas D. Gatlin TSITDG/wt

Attachment:

V. C. Summer Unit 1 Cycle 23 Core Operating Limits Report Revision 0 c:

Without Attachment unless noted K. B. Marsh S. A. Byrne J. B. Archie N. S. Camns J. H. Hamilton J. W. Williams W. M. Cherry K. M. Sutton L. D. Wert (wlattachment)

S. A. Williams (w/attachment)

S. E. Jenkins NRC Resident Inspector (wlattachment)

NSRC RTS (LTD 320)

File (818.23-1, RR 5000)

DMS (RC-15-0188)

I I

I V. C. Summer Nuclear Station

P.O0.

Box 88.* Jenkinsville, SC. 29065.* F (803) 941-9776

SOUTH CAROLINA ELECTRIC & GAS COMPANY VIRGIL C. SUMMER NUCLEAR STATION UNIT 1 CORE OPERATING LIMITS REPORT FOR CYCLE 23 REVISION 0 NOVEMBER 2015

LIST OF EFFECTIVE PAGES PAGE ii iii 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 REVISION 0

0 0

0

Table of Contents

.Section P~

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 - FN (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 Pa~e Table 1.

RAOC W(z) at 150 MWD/MTU V. C. Summer -Cycle 23 11 Table 2.

RAOC W(z) at 3000 MWD/MTU V. C. Summer - Cycle 23 12 Table 3.

RAOC W(z) at 5000 MWD/MTU V. C. Summer -Cycle 23 13 Table 4.

RAOC W(z) at 8000 MWD/MTU V. C. Summer - Cycle 23 14 Table 5.

RAOC W(z) at 10000 MWD/MTU V. C. Summer - Cycle 23 15 Table 6.

RAOC W(z) at 14000 MWD/MTU V. C. Summer - Cycle 23 16 Table 7.

RAOC W(z) at 20000 MWD/MTU V. C. Summer -Cycle 23 17 Table 8.

RAOC FQ Margin Decrease in Excess of 2% Per 31 EFPD - Cycle 23 18 Table 9.

BASELOAD W(z) at 150 MWD/MTU V. C. Summer - Cycle 23 19 Table 10.

BASELOAD W(z) at 3000 MWD/MTU V. C. Summer - Cycle 23 20 Table 11.

BASELOAD W(z) at 5000 MWD/MTU V. C. Summer - Cycle 23 21 Table 12.

BASELOAD W(z) at 8000 MWD/MTU V. C. Summer - Cycle 23 22 Table 13.

BASELOAID W(z) at 10000 MWD/MTU V. C. Summer - Cycle 23 23 Table 14.

BASELOAD W(z) at 14000 MWD/MTU V. C. Summer - Cycle 23 24 Table 15.

BASELOAD W(z) at 20000 MWD/MTU V. C. Summer -Cycle 23 25 Table 16.

BASE LOAD FQ Margin Decrease in Excess of 2% Per 31 EFPD - Cycle 23 26 ii Revision 0

List of Figures Figure 1.

Moderator Temperature Coefficient Versus Power Level V. C. Summer -Cycle 237 Figure 2.

Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer -Cycle 238 Figure 3.

Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer -Cycle 239 Figure 4.

K(z) - Normalized FQ(Z) as a Function of Core Height V. C. Summer -Cycle 23 10 Figure 5.

RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 23 27 iii Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 1.0 Core Operating Limits Report This Core Operating Limits Report (COLR) for V. C. Summer Station Cycle 23 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 1 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 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/0F (-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/IAROIRTP-MTC should be less negative than or equal to -4.lxl0-4 Ak/k/0F

(-41 pcm/°F).

2.1.3 The Revised Predicted near-EOL 300 ppm MTC shall be calculated using the following algoritham from Reference 2:

Revised Predicted MTC =Predicted MTC + AFD Correction*+ Predictive Correction**

AFD Correction is 0.05 pcn!°F/%AAFD.

- Predictive Correction is -3 pcrrI°F.

If the Revised Predicted MTC is less negative than the SR 4.1.1.3b limit of

-4.lxi0-4 Ak/k/0F, 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 2 Revision 0

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 23 are shown in Figure 3.

2.4.2 The Axial Flux Difference (AFD) target band during base load operations for Cycle 23 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 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):

F RTP FQ (Z)* <

x K(Z) for P >0.5 P

F RTP hra oe FQ (Z) <*

x K(Z) forP *<0.5 where: P -=

hra oe 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 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. 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 4.2.2.2.e. A 2% penalty factor shall be used at all burnups that are outside the range of Table 8.

3 3 Revision 0

V. C. Summer Cycle 23NOEBR21 NOVEMBER 2015 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 MiWD/1\\TU 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 BOL burnup 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 4.2.2.4.e. 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):

R =

F*

where: P=

Thermal Power FRVx (1 +PF*H x (1 - P))

Rated Thermal Power 2.6.1 p*RTPj=1 6 2 Al-2.6.2 PF'AH = 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 (PDMS) 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:

FAH 100.0 where: U AH ---Uncertainty for enthalpy rise as defined in equation (5-19) in Reference I or 4.0, whichever is larger.

4 4 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 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= j1.0+*

-U~e 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.

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, UFAH, to be applied to the Nuclear Enthalpy Rise Hot Channel Factor FNAU shall be calculated by the following formula:

UFAR = UFA~m where: U FAnm

=Base FARl measurement uncertainty.

=1.04 If the Power Distribution Monitoring System is INOPERABLE, as defined in Tectmical 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 fornula:

UFQ=*Uqu *Ue where: U qu

= Base FQ measurement uncertainty.

= 1.05 Ue Engineering uncertainty factor.

= 1.03 5 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 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 6.9. 1.11.

6 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 C.)

C-,

L-0..

I'--

L.

0 Figure 1.

Moderator Temperature Coefficient Versus Power Level V.C. Summer - Cycle 23 1.0 0 0.90 Unacceptable Operation 0.80 0.70 0.60 Acceptable Operation 0.50 0.40 0.30 0.20 0.10 0.00 30 40 50 60 70 Percent of Rated Thermal Power 7

7 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 Figure 2. Rod Group Insertion Limits Versus Thermal Power for Three Loop Operation V. C. Summer - Cycle 23 230 220(05,28 210 a-200 190 180 170 AK 160 o

15 1.6-130 tO 120 0Y 9

80 00 80 30 20 10 (0.048, 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

8 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Figure 3.

Axial Flux Difference Limits as a Function of Rated Thermal Power V. C. Summer - Cycle 23 120 100 I-0 0t.

E I--

n) 4-0J L3.

80 60 40 20 0 I

-40

-30

-20

-10 0

10 Axial Flux Difference (% Al) 20 30 40 9

9 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Figure 4.

K(z) - Normalized FQ(Z) as a Function of Core Height V. C. Summer - Cycle 23 1.10 q.(0.0, 1.0)

(.,10 0.9 0.7

. 0

.4----------60 0.20 0.241081 Bottom Core Height (Feet)

Top 10 10 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 1.

RAOC W(z) at 150 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0,000 1.229 6.140___1.160 0.140 1,230 6,279 1.166__

0.279 1.232 6.419 1.172__

0.419 1.241 6.558 1.177___

0.558 1.256 6.698 1.182__

0.698 1.2606.3118 0.837 1.255 6.977 1.190 0.977 1.249 7.116 1.193 1.116 1.242 7.256 1.195 1,256 1.234 7.395 1.197 1,395 1.225 7.535 1.197 1.535 1.215 7.674 1.197 1.674 1.205 7.814 1.196 1,814 1.194 7.953 1.194 1.953 1.183 8.093 1.191 2.093 1.171 8.233 1.188 2.233 1.159 8.372 1.183 2.372 1.147 8.512 1.178 2.512 1.136 8.651 1.173 2.651 1.123 8.791 1.171 2.791 1.114 8.930 1.174 2.930 1.111 9.070 1.175 3.070 1.109 9.209 1.176 3.209 1.108 9.349 1.175 3,349 1.106 9.488 1.175 3.488 1.104 9.628 1.176 3.628 1.104 9.767 1.180 3.767 1.104 9.907 1.183 3.907 1.107 10.046 1.186 4.046 1.108 10.186 1.188 4.186 1.110 10.326 1.191 4.326 1.112 10.465 1.196 4.465 1.113 10.605 1.199 4.605 1.114 10.744 1.202 4.744 1.114

10. 884 1.204 4.884 1.115 11.023 1.205 5.023 1.115 11.163 1.205 5.163 1.115 11.302 1.205 5.302 1.117 11.442 1.201 5.442 1.121 11.581 1.184 5.581 1.129 11.721 1.164 5.721 1.137 11.860 1.145 5.860 1.145 12.000 1.124 6.000 1.153 11 11 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 2. RAOC W(z) at 3000 MWD/MTU V. C. Summer - Cycele 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0.000 1.370 6.140 1.120 0.140 1.371 6.279 1.125 0.279 1.372 6.419 1.131 0.419 1.378 6.558 1.135 0.558 1.389 6.698 1.140 0.698 1.388 6.837 1.144 0.837 1.379 6.977 1.147 0.977 1.370 7.116 1.150 1.116 1.358 7.256 1.152 1.256 1.345 7.395 1.154 1.395 1.330 7.535 1.155 1.535 1.315 7.674 1.155 1.674 1.298 7.814 1.155 1.814 1.280 7.953 1.153 1.953 1.262 8.093 1.152 2.093 1.244 8.233 1.149 2.233 1.225 8.372 1.146 2.372 1.206 8.512 1.143 2.512 1.188 8.651 1.138 2.651 1.170 8.791 1.138 2.791 1.152 8.930 1.146 2.930 1.134 9.070 1.152 3.070 1.128 9.209 1.158 3.209 1.127 9.349 1.163 3.349 1.124 9.488 1.168 3.488 1.122 9.628 1.172 3.628 1.119 9.767 1.176 3.767 1.117 9.907 1.178 3.907 1.114 10.046 1.180 4.046 1.110 10.186 1.179 4.186 1.107 10.326 1.179 4.326 1.104 10.465 1.177 4.465 1.100 10.605 1.173 4.605 1.096 10.744 1.173 4.744 1.093

10. 884 1.174 4.884 1.092 11.023 1.174 5.023 1.091 11.163 1.174 5.163 1.091 11.302 1.173 5.302 1.093 11.442 1.170 5.442 1.095 11.581 1.154 5.581 1.097 11.721 1.136 5.721 1.101 11.860 1.119 5.860 1.108 12.000 1.099 6.000 1.114 12 12 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 3. RAOC W(z) at 5000 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0.000 1.378 6.140 1.113 0.140 1.379 6.279 1.119 0.279 1.380 6.419 1.124 0.419 1.385 6.558 1.129 0.558 1.394 6.698 1.134 0.698 1.393 6.837 1.138 0.837 1.384 6.977 1.141 0.977 1.374 7.116 1.144 1.116 1.362 7.256 1.147 1.256 1.348 7.395 1.1I49 1.395 1.332 7.535 1.150 1.535 1.316 7.674 1.150 1.674 1.298 7.814 1.150 1.814 1.279 7.953 1.150 1.953 1.260 8.093 1.148 2.093 1.240 8.233 1.146 2.233 1.220 8.372 1.144 2.372 1.200 8.512 1.140 2.512 1.181 8.651 1.136 2.651 1.161 8.791 1.136 2.791 1.144 8.930 1.143 2.930 1.137 9.070 1.150 3.070 1.133 9.209 1.156 3.209 1.130 9.349 1.162 3.349 1.127 9.488 1.168 3.488 1.125 9.628 1.173 3.628 1.122 9.767 1.177 3.767 1.119 9.907 1.181 3.907 1.116 10.046 1.183 4.046 1.113 10.186 1.186 4.186 1.109 10.326 1.192 4.326 1.105 10.465 1.198 4.465 1.101 10.605 1.203 4.605 1.097 10.744 1.208 4.744 1.093 10.884 1.212 4.884 1.089 11.023 1.215 5.023 1.087 11.163 1.216 5.163 1.087 11.302 1.217 5.302 1.087 11.442 1.215 5.442 1.090 11.581 1.201 5.581 1.091 11.721 1.184 5.721 1.095 11.860 1.167 5.860 1.101 12.000 1.148 6.000

__1.107 13 13 Revision 0

V. C. Summer Cycle 23NOMBR21 NOVEMBER 2015 Table 4. RAOC W(z) at 8000 MWD/MTU V. C. Summer - Cycle 23 Core Height fit)

W(z)

Core Height (ft)

W(z) 0,000 1.346 6.140 1.110 0.140 1.347 6.279 1.117 0.279 1.348 6.419 1.124 0,419 1.353 6.558 1.130

0. 558 1.363 6.698 1.136

0. 698 1.362 6.837 1.142

0. 837 1.355 6.977 1.147 0.977 1.346 7.116 1.151 1,116 1.335 7.256 1.156 1,256 1.322 7.395 1.159 1.395 1.308 7.535 1.161 1.535 1.292 7.674 1.163 1.674 1.276 7.814 1.164 1.814 1.258 7.953 1.165 1.953 1.240 8.093 1,165 2.093 1.222 8.233 1.164 2.233 1.203 8.372 1.163 2.372 1.185 8.512 1.160 2.512 1.166 8.651 1.157 2.651 1.149 8.791 1.156 2.791 1.131 8.930 1.160 2.930 1.114 9.070 1.168 3.070 1.109 9.209 1.174 3.209 1.108 9.349 1.180 3.349 1.106 9.488 1.186 3.488 1.104 9.628 1.191 3.628 1.102 9.767 1.195 3.767 1.099 9.907 1.199 3.907 1.097 10.046 1.201 4.046 1.094 10.186 1.206 4.186 1.091 10.326 1.214 4.326 1.088

10. 465 1.221 4.465 1.087 10.605 1.226 4.605 1.087

10. 744 1.232 4.744 1.086

10. 884 1.236 4.884 1.086 11.023 1.239 5.023 1.085 11.163 1.240 5.163 1.085 11.302 1.240 5.302 1.087 11.442 1.239 5.442 1.088 11.581 1.225 5.581 1.088 11.721 1.208 5.721 1.092 11.860 1.191 5.860 1.098 12.000 1.170 6.000 1.103 14 14 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 5. RAOC W(z) at 10000 MWID/MTU V.

C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z)

0. 000 1.275 6.140 1.120

0. 140 1.276 6.279 1.127 0.279 1.278 6.419 1.135 0.419 1.284 6.558 1.142 0.558 1.295 6.698 1.148

0. 698 1.295 6.837 1.154

0. 837 1.289 6.977 1.159 0.977 1.282 7.116 1.164 1.116 1.274 7.256 1.168 1.256 1.263 7.395 1.172 1.395 1.251 7.535 1.174 1.535 1.238 7.674 1.176 1.674 1.224 7.814 1.177 1.814 1.209 7.953 1.177 1.953 1.195 8.093 1.177 2.093 1.179 8.233 1.176 2.233 1.164 8.372 1.174 2.372 1.148 8.512 1.172 2.512 1.133 8.651 1.168 2.651 1.120 8.791 1.167 2.791 1.108 8.930 1.169 2.930 1.097 9.070 1.176 3.070 1.090 9.209 1.182 3.209 1.088 9.349 1.187 3.349 1.088 9.488

_____1.192 3.488 1.089 9.628

_____1.196 3.628 1.089 9.767

______1.199 3.767 1.090 9.9071.202 3.90 1.01 10 0461.205 4.046 1.091 10.186

_____1.211 4.186 1.091 10.3261.218 4.326 1.091 10.4651.224 4.465 1.091

10. 605 1.229 4.605 1.091

10. 744 1.234 4.744 1.091 10.884 1.238 4.884 1.090 11.023 1.240 5.023 1.090 11.163 1.241 5.163 1.089 11.302 1.241_____

5.302 1.089 11.4421.3 5.442 1.089 11.5811.2 5.581 1.090 11.7211.0 5.721 1.095 11.8601.8 5.860 1.103 12.0001.6 6.000 1.112 15 15 Revision 0

V. C. Summer Cycle 23NOEBR21 NOVEMBER 2015 Table 6. RAOC W(z) at 14000 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0.000 1.202 6.140 1.139

0. 140 1.203 6.279 1.146 0.279 1.205 6.419 1.153 0.419 1.213 6.558 1.159 0.558 1.226 6.698 1.164 0.698 1.229 6.837 1.169 0.837 1.227 6.977 1.173 0.977 1.223 7.116 1.177 1.116 1.217 7.256 1.180 1.256 1.210 7.395 1.183 1.395 1.202 7.535 1.183 1.535 1.193 7.674 1.183 1.674 1.184 7.814 1.183 1.814 1.174 7.953 1.181 1.953 1.164 8.093 1.179 2.093 1.153 8.233 1.177 2.233 1.143 8.372 1.173 2.372 1.131 8.512 1.169 2.512 1.120 8.651 1.164 2.651 1.109 8.791 1.164 2.791 1.099 8.930 1.169 2.930 1.089 9.070 1.174 3.070 1.089 9.209 1.177 3.209 1.090 9.349 1.180 3.349 1.090 9.488 1.182 3.488 1.091 9.628 1.184 3.628 1.091 9.767 1.185 3.767 1.092 9.907 1.189 3.907 1.093 10.046 1.195 4.046 1.095 10.186 1.201 4.186 1.098

10. 326 1.207 4.326 1.100 10.465 1.212 4.465 1.102 10.605 1.216 4.605 1.104

10. 744 1.220 4.744 1.106 10.884 1.223 4.884 1.108 11.023 1.224 5.023 1.109 11.163 1.224 5.163 1.110 11.302 1.222 5.302 1.111 11.442 1.219 5.442 1.112 11.581 1.202 5.581 1.112 11.721 1.183 5.721 1.115 11.860 1.165 5.860 1.124 12.000 1.144 6.000 1.132 16 16 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 7. RAOC W(z) at 20000 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0.000 1.217 6.140 1.198 0.140 1.219 6.279 1.206 0.279 1.221 6.419 1.213 0.419 1.228 6.558 1.219 0.558 1.243 6.698 1.224 0.698 1.247 6.837 1.228

0. 837 1.243 6.977 1.232 0.977 1.239 7.116 1.234 1.116 1.233 7.256 1.236 1.256 1.226 7.395 1.237 1.395 1.217 7.535 1.234 1.535 1.208 7.674 1.232 1.674 1.199 7.814 1.229 1.814 1.188 7.953 1.225 1.953 1.178 8.093 1.220 2.093 1.168 8.233 1.214 2.233 1.157 8.372 1.207 2.372 1.145 8.512 1.205 2.512 1.133 8.651 1.202 2.651 1.122 8.791 1.198 2.791 1.110 8.930 1.193 2.930 1.098 9.070 1.188 3.070 1.092 9.209 1.180 3.209 1.087 9.349 1.173 3.349 1.083 9.488 1.173 3.488 1.087 9.628 1.177 3.628 1.093 9.767 1.183 3.767 1.101 9.907 1.189 3.907 1.110 10.046 1.194 4.046 1.116 10.186 1.199 4.186 1.122

10. 326 1.204 4.326 1.128 10.465 1.208 4.465 1.134 10.605 1.212 4.605 1.139 10.744 1.216 4.744 1.144 10.884 1.218 4.884 1.149 11.023 1.219 5.023 1.153 11.163 1.218 5.163 1.156 11.302 1.215 5.302 1.159 11.442 1.210 5.442 1.162 11.581 1.191 5.581 1.166 11.721 1.170 5.721 1.172 11.860 1.150 5.860 1.180 12.000 1.127 6.000 1.189 17 17 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 8. RAOC FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 23 Cycle Burnup Maximum Decrease (MWDMTU) in FQ Margin 1009 1.0200 1181 1.0212 1353 1.0214 1525 1.0217 1697 1.0224 1868 1.0234 2040 1.0247 2212 1.0261 2384 1.0280 2556 1.0293 2728 1.0301 2899 1.0299 3071 1.0286 3243 1.0265 3415 1.0236 3587 1.0205 3759 1.0200 Note: All cycle burnups outside the range of this table shall use a 1.020 decrease in margin for compliance with Specification 4.2.2.2.e. Linear interpolation is adequate for intermediate cycle burnups.

18 18 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 9. BASELOAD W(z) at 150 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z)

0. 000 1.132 6.140 1.054

0. 140 1.132 6.279 1.056 0.279 1.133 6.419 1.059 0.419 1.134 6.558 1.061 0.558 1.135 6.698 1.063 0.698 1.134 6.837 1.065

0. 837 1.133 6.977 1.067 0.977 1.132 7.116 1.069 1.116 1.130 7.256 1.071 1.256 1.128 7.395 1.073 1.395 1.126 7.535 1.074 1.535 1.124 7.674 1.076 1.674 1.121 7.814 1.077 1.814 1.119 7.953 1.078 1.953 1.116 8.093 1.080 2.093 1.112 8.233 1.081 2.233 1.109 8.372 1.082 2.372 1.105 8.512 1.083 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 1.091 9.070 1.086 3.070 1.087 9.209 1.086 3.209 1.084 9.349 1.087 3.349 1.082 9.488 1.087 3.488 1.081 9.628 1.088 3.628 1.079 9.767 1.088 3.767 1.078 9.907 1.089 3.907 1.076

10. 046 1.089 4.046 1.075 10.186 1.090 4.186 1.073 10.326 1.090 4.326 1.072 10.465 1.091 4.465 1.070 10.605 1.091 4.605 1.068 10.744 1.092 4.744 1.066

10. 884 1.092 4.884 1.065 11.023 1.093 5.023 1.063 11.163 1.093 5.163 1.061 11.302 1.093 5.302 1.059 11.442 1.093 5.442 1.057 11.581 1.093 5.581 1.054 11.721 1.092 5.721 1.054 11.860 1.092 5.860 1.054 12.000 1.092 6.000 1.054 19 19 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 Table 10. BASELOAD W(z) at 3000 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0.000 1.114 6.140 1.052 0.140 1.115 6.279 1.051 0.279 1.115 6.419 1.051 0.419 1.116 6.558 1.050

.558__1.1__8_6.698 1.050 0.698 1.118

__6.837 1.050 0.837 1.118

__6.977 1.052 0971177.116 1.054 1.116__ __

.1____7

__7.256 1.056

.25______1.____16

___7.395 1.059

.395_ __

__1.11___

__7.535 1.061

.953______

.1________8.093006 3.070 1.094 9.2091.7 3.349 1.1089 948.1

.073___

3.488 1.1086 9.628 1.075_____

2.651___1.___1_8.767 1.076______

2.791___1.__99_8.9307

_______78 3.9307 1.080 10.046 1.079_____

4.046 1.078 10.186 1.081 3.209_____1.09___

10.326 1.082_

3.349.08 10.465

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V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 12. BASELOAD W(z) at 8000 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0.000 1.114 6.140 1.053 0.140 1.114 6.279 1.052 0.279 1.115 6.419 1.052 0.419 1.116 6.558 1.051 0.558 1.117 6.698 1.050

0. 698 1.117 6.837 1.050 0.837 1.117 6.977 1.052 0.977 1.117 7.116 1.055 1.116 1.117 7.256 1.057 1.256 1.117 7.395 1.059 1.395 1.116 7.535 1.061 1.535

1. 115 7.674 1.062 1.674 1.114 7.814 1.064 1.814 1.113 7.953 1.066 1.953 1.111 8.093 1.068 2.093 1.110 8.233 1.069 2.233 1.108 8.372 1.071 2.372 1.106 8.512 1.072 2.512 1.104 8.651 1.073 2.651 1.102 8.791 1.075 2.791 1.099 8.930 1.076 2.930 1.097 9.070 1.077 3.070 1.094 9.209 1.079 3.209 1.091 9.349 1.080 3.349 1.088 9.488 1.081 3.488 1.085 9.628 1.082 3.628 1.083 9.767 1.083 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 1.076

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 1.069 11.023 1.092 5.023 1.067 11.163 1.093 5.163 1.066 11.302 1.093 5.302 1.064 11.442 1.094 5.442 1.062 11.581 1.094 5.581 1.060 11.721 1.093 5.721 1.058 11.860 1.094 5.860 1.056 12.00O0 1.094 6.000 1.054 22 22 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 13. BASELOAD W(z) at 10000 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0.000 1.119 6.140 1.054 0.140 1.119 6.279 1.053 0.279 1.120 6.419 1.052 0.419 1.121 6.558 1.051 0.558 1.122 6.698 1.052 0.698 1.122 6.837 1.054 0.837 1.122 6.977 1.056 0.977 1.122 7.116 1.058 1.116 1.122 7.256 1.060 1.256 1.121 7.395 1.062 1.395 1.120 7.535 1.064 1.535 1.119 7.674 1.065 1.674 1.118 7.814 1.067 1.814 1.116 7.953 1.068 1.953 1.114 8.093 1.070 2.093 1.112 8.233 1.071 2.233 1.110 8.372 1.072 2.372 1.108 8.512 1.074 2.512 1.105 8.651 1.075 2.651 1.103 8.791 1.076 2.791 1.100 8.930 1.077 2.930 1.097 9.070 1.078 3.070 1.094 9.209 1.079 3.209 1.091 9.349 1.079 3.349 1.087 9.488 1.080 3.488 1.084 9.628 1.081 3.628 1.082 9.767 1.082 3.767 1.080 9.907 1.083 3.907 1.078 10.046 1.083 4.046 1.077 10.186 1.084 4.186 1.076 10.326 1.085 4.326 1.075 10.465 1.086 4.465 1.073 10.605 1.087 4.605 1.072 10.744 1.088 4.744 1.070 10.884 1.088 4.884 1.068 11.023 1.089 5.023 1.067 11.163 1.090 5.163 1.065 11.302 1.090 5.302 1.063 11.442 1.091 5.442 1.061 11.581 1.091 5.581 1.059 11.721 1.094 5.721 1.057 11.860 1.098 5.860 1.055 12.000 1.099 6.000 1.055 23 23 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 14. BASELOAD W(z) at 14000 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z) 0.000 1.133 6.140 1.055 0.140 1.133 6.279 1.055 0.279 1.134 6.419 1.057 0.419 1.135 6.558 1.059

0. 558 1.136 6.698 1.061 0.698 1.136 6.837 1.063 0.837 1.136 6.977 1.065 0.977 1.135 7.116 1.066 1.116 1.134 7.256 1.068 1.256 1.133 7.395 1.070 1.395 1.132 7.535 1.071 1.535 1.130 7.674 1.072 1.674 1.128 7.814 1.073 1.814 1.125 7.953 1.073 1.953 1.123 8.093 1.074 2.093 1.120 8.233 1.075 2.233 1.116 8.372 1.076 2.372 1.113 8.512 1.076 2.512 1.110 8.651 1.076 2.651 1.106 8.791

.1.077 2.791 1.102 8.930 1.077 2.930 1.098 9.070 1.078 3.070 1.094 9.209 1.078 3.209 1.089 9.349 1.078 3.349 1.084 9.488 1.078 3.488 1.082 9.628 1.078 3.628 1.081 9.767 1.079 3.767 1.079 9.907 1.081 3.907 1.078

10. 046 1.083 4.046 1.076 10.186 1.084 4.186 1.075 10.326 1.086 4.326 1.074 10.465 1.087 4.465 1.072 10.605 1.088 4.605 1.070 10.744 1.089 4.744 1.069

10. 884 1.090 4.884 1.067 11.023 1.090 5.023 1.065 11.163 1.090 5.163 1.063 11.302 1.090 5.302 1.061 11.442 1.090 5.442 1.059 11.581 1.095 5.581 1.058 11.721 1.102 5.721 1.058 11.860 1.103 5.860 1.057 12.000 1.102 6.000 1.056 24 24 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 15. B3ASELOAID W(z) at 20000 MWD/MTU V. C. Summer - Cycle 23 Core Height (ft)

W(z)

Core Height (ft)

W(z)

0. 000 1.156 6.140 1.068

0. 140 1.156 6.279 1.070 0.279 1.157 6.419 1.072 0.419 1.157 6.558 1.074 0.558 1.159 6.698 1.075 0.698 1.158 6.837 1.076

0. 837 1.157 6.977 1.077 0.977 1.156 7.116 1.078 1.116 1.154 7.256 1.078 1.256 1.152 7.395 1.079 1.395 1.149 7.535 1.079 1.535 1.146 7.674 1.079 1.674 1.143 7.814 1.079 1.814 1.139 7.953 1.079 1.953 1.135 8.093 1.079 2.093 1.130 8.233 1.078 2.233 1.125 8.372 1.078 2.372 1.119 8.512 1.077 2.512 1.114 8.651 1.077 2.651 1.109 8.791 1.076 2.791 1.103 8.930 1.076 2.930 1.097 9.070 1.077 3.070 1.091 9.209 1.079 3.209 1.086 9.349 1.082 3.349 1.083 9.488 1.085 3.488 1.080 9.628 1.088 3.628 1.078 9.767 1.091 3.767 1.076 9.907 1.094 3.907 1.073

10. 046 1.097 4.046 1.071 10.186 1.099 4.186 1.068 10.326 1.101 4.326 1.066 10.465 1.103 4.465 1.066

10. 605 1.104 4.605 1.066 10.744 1.106 4.744 1.065 10.884 1.107 4.884 1.065 11.023 1.107 5.023 1.065 11.163 1.108 5.163 1.064 11.302 1.108 5.302 1.064 11.442 1.113____

5.442 1.063 11.581 1.123 5.581 1.062 11.721 1.128__

5.721 1.062 11.860 1.128______

5.860 1.064 12.000 1.126__

6.000 1.066 25 25 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Table 16. BASE LOAD FQ Margin Decreases in Excess of 2% Per 31 EFPD - Cycle 23 Cycle Burnup Maximum Decrease (MWD/MTU) in FQ Marglin 666 837 1009 1181 1353 1525 1697 1868 2040 2212 2384 2556 2728 2899 3071 3243 3415 3587 3759 3930 1.0200 1.0204 1.0242 1.0328 1.0380 1.0377 1.0369 1.0365 1.0363 1.0362 1.0359 1.0353

1. 0340 1.0322 1.0301 1.0270 1.0239 1.0208 1.0200 1.0200 Note: All cycle burnups outside the range of this table shall use a 1.020 decrease in margin for compliance with Specification 4.2.2.4.e. Linear interpolation is adequate for intermediate cycle bumups.

26 26 Revision 0

V. C. Summer Cycle 23 NOVEMBER 2015 V. C. Summer Cycle 23 NOVEMBER 2015 Figure 5. RCS Total Flowrate vs. R for Three Loop Operation V. C. Summer - Cycle 23 30.0 29.8 29.6 29.4 a-o 29.2

,' 29.0 I,-

28.6 28.4 28.2 28.0 1 0.90 0.95 1.00 1.05 1.10 R =FN-delta-H/1.62E1.0 + 0.3(1.0 - P)]

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

27 27 Revision 0

Thomas D. Gatlin Vice President, Nuclear Operations 803.345.4342 SsA COMPANY November 25, 2015 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Dear Sir I Madam:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION (UNIT 1)

DOCKET NO. 50-395 OPERATING LICENSE NO. NPF-12 CORE OPERATING LIMITS REPORT (COLR) FOR CYCLE 23 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 23.

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

Very truly yours Thomas D. Gatlin TSITDG/wt

Attachment:

V. C. Summer Unit 1 Cycle 23 Core Operating Limits Report Revision 0 c:

Without Attachment unless noted K. B. Marsh S. A. Byrne J. B. Archie N. S. Camns J. H. Hamilton J. W. Williams W. M. Cherry K. M. Sutton L. D. Wert (wlattachment)

S. A. Williams (w/attachment)

S. E. Jenkins NRC Resident Inspector (wlattachment)

NSRC RTS (LTD 320)

File (818.23-1, RR 5000)

DMS (RC-15-0188)

I I

I V. C. Summer Nuclear Station

P.O0.