ML18011A780

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Rev 2 to Harris Unit 1,Cycle 6 Colr.
ML18011A780
Person / Time
Site: Harris Duke Energy icon.png
Issue date: 01/09/1995
From:
CAROLINA POWER & LIGHT CO.
To:
Shared Package
ML18011A779 List:
References
NUDOCS 9502070119
Download: ML18011A780 (12)
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Text

Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 January 9, 1995 NFM&SA File: 2494-0027 9 011'50131 05000400 pDR ADOCK pDR p

Page 1 of 11 Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Shearon Harris Unit 1 Cycle 6 has been prepared in accordance with the requirements of Technical Specification 6.9.1.6.

The Technical Specifications affected by this report are listed below:

3/4.1.1.3 Moderator Temperature Coefficient 3/4.1.3.5 Shutdown Rod Insertion Limit 3/4.1.3.6 Control Rod Insertion Limits 3/4.2.1 Axial Flux Difference 3/4.2.2 Heat Flux Hot Channel Factor - F<(Z) 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor - F~z 3/4.9.1.a Boron Concentration During Refueling Operations

Page 2 of ll Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 2.0 OPERATING LIMITS The cycle-specific parameter limits for the specifications listed in Section 1.0 are presented in the following subsections. These limits have been developed using NRC-approved methodologies specified in Technical Specification 6.9.1.6 and given in Section 3.0.

2.1 Moderator Tem erature Coefficient (Specification 3/4.1.1.3)

The Moderator Temperature Coefficient (MTC) limits are:

The Positive MTC Limit (ARO/HZP) shall be less positive than

+5.0 pcm/'F for power levels up to 70% RTP with a linear ramp to 0 pcm/'F at 100% RTP.

The Negative MTC Limit (ARO/RTP) shall be less negative than

-45 pcm/'F.

The MTC Surveillance limit is:

The 300 ppm/ARO/RTP-MTC should be less negative than or equal to

-37.4 pcm/'F.

where: ARO stands for All Rods Out HZP stands for Hot Zero THERMAL POWER RTP stands for RATED THERMAL POWER 2.2 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5)

Fully withdrawn for all shutdown rods shall be 231 steps.

2.3 Control Rod Insertion Limit (Specification 3/4.1.3.6)

The control rod banks shall be limited in physical insertion as specified in Figure 1. Fully withdrawn for all control rods shall be 231 steps.

2.4 Axial Flux Difference (Specification 3/4.2.1)

The AXIAL FLUX DIFFERENCE (AFD) target band is specified in Figure 2.

Page 3 of 11 Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 2.5 Heat Flux Hot Channel Factor - FQ(Z) (Specification 3/4.2.2)

FQ(Z) < Fg~~ >> K(Z)/P for P ) 0. 5 FQ(Z) < F

~ >> K(Z)/0.5 for P < 0.5 where: P - THERMAL POWER/RATED THERMAL POWER

a. FQ 2.45 for LOPAR and VANTAGE 5 fuel
b. F 2.52 for SPC fuel
c. K(Z) is specified in Figure 3.

V(Z) Curve for PDC-3 Operation is specified in Figure 4. The V(z) curve is sufficient to determine the PDC-3 V(z) versus core height for Cycle 6 burnups through the end of full power reactivity plus a coastdown for a maximum cycle energy of 461 EFPDs.

2.6 Nuclear Enthal Rise Hot Channel Factor - F<~ (Specification 3/4.2.3)

Fgg < F/' (1 + PF$ g ~ (1 - P))

where: P THERMAL POWER/RATED THERMAL POWER

a. Fz

~

1.62 for LOPAR fuel

b. Fz> 1.65 for VANTAGE 5 fuel
c. F~s - 1.73 for SPC fuel
d. PF~z - 0.3 for LOPAR fuel
e. PFz>< 0.35 for VANTAGE 5 and SPC fuel 2.7 Boron Concentration for Refuelin 0 erations (Specification 3/4.9.1.a)

Through the end of Cycle 6, the boron concentration required to maintain K,<< less than or equal to .95 is less restrictive than the 2000 ppm boron requirement. Boron concentration must be maintained greater than or equal to 2000 ppm during refueling operations.

Page 4 of 11 Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 3.0 METHODOLOGY REFERENCES XN-75-27(A), and Supplements 1, 2, 3, 4, and 5, "Exxon Nuclear Neutronics Design Methods for Pressurized Water Reactors," Exxon Nuclear Company, Richland, WA 99352.

(Methodology for Specification 3.1.1.3 - Moderator Temperature Coefficient, 3.1.3.5 - Shutdown Bank Insertion Limits, 3.1.3.6 Control Bank Insertion Limits, 3.2.1 - Axial Flux Difference, 3.2.2 - Heat Flux Hot Channel Factor, 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor, and 3,9.1 - Boron Concentration).

ANF-89-151(A), and Correspondence, "ANF-RELAP Methodology for Pressurized Water Reactors: Analysis of Non-LOCA Chapter 15 Events," Advanced Nuclear Fuels Corporation, Richland, WA 99352.

(Methodology for Specification 3.1.1.3 - Moderator Temperature Coefficient, 3.1.3.5 - Shutdown Bank Insertion Limits, 3.1.3.6 Control Bank Insertion Limits, 3.2.1 - Axial Flux Difference, 3.2.2 - Heat Flux Hot Channel Factor, and 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

3. XN-NF-82-21(A), Revision 1, "Application of Exxon Nuclear Company PWR Thermal Margin Methodology to Mixed Core Configurations,"

Exxon Nuclear Company, Richland, WA 99352.

(Methodology for Specification 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

XN-75-32(A), Supplements 1, 2, 3, and 4, "Computational Procedure for Evaluating Fuel Rod Bowing," Exxon Nuclear Company, Richland, WA 99352.

(Methodology for Specification 3.2.2 - Heat Flux Hot Channel Factor, and 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

XN-NF-84-93(A), and Supplement 1, "Steamline Break Methodology for PWRs," Exxon Nuclear Company, Richland, WA 99352.

(Methodology for Specification 3.1.1.3 - Moderator Temperature Coefficient, 3.1.3.5 - Shutdown Bank Insertion Limits, 3.1.3.6 Control Bank Insertion Limits, and 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

Page 5 of 11 Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 3.0 METHODOLOGY REFERENCES (continued)

6. EXEM PWR Large Break LOCA Evaluation Model as defined by:

XN-NF-82-20(A), Revision 1 and Supplements 1, 2, 3, and 4, "Exxon Nuclear Company Evaluation Model EXEM/PWR ECCS Model Updates,"

Exxon Nuclear Company, Richland, WA 99352.

XN-NF-82-07(A), Revision 1, "Exxon Nuclear Company ECCS Cladding Swelling and Rupture Model," Exxon Nuclear Company, Richland, WA 99352.

XN-NF-81-58(A), Revision 2 and Supplements 1, 2, 3, and 4, "RODEX2 Fuel Rod Thermal Response Evaluation Model," Exxon Nuclear Company, Richland, WA 99352.

XN-NF-85-16(A), Volume 1 and Supplements 1, 2, and 3, Vo1ume 2, Revision 1 and Supplement 1, "PWR 17x17 Fuel Cooling Test Program," Exxon Nuclear Company, Richland, WA 99352.

XN-NF-85-105(A), and Supplement 1, "Scaling of FCTF Based Reflood Heat Transfer Correlation for Other Bundle Designs," Exxon Nuclear Company, Richland, WA 99352.

(Methodology for Specification 3.2.1 - Axial Flux Difference, 3.2.2 - Heat Flux Hot Channel Factor, and 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

XN-NF-78-44(A), "A Generic Analysis of the Control Rod Ejection Transient for Pressurized Water Reactors," Exxon Nuclear Company, Richland, WA 99352.

(Methodology for Specification 3.1.3.5 - Shutdown Bank Insertion Limits, 3.1.3.6 - Control Bank Insertion Limits, and 3.2.2 - Heat Flux Hot Channel Factor).

Page 6 of 11 Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 3.0 METHODOLOGY REFERENCES (continued)

8. ANF-88-054(A), "PDC-3: Advanced Nuclear Fuels Corporation Power Distribution Control for Pressurized Water Reactors and Application of PDC-3 to H. B. Robinson Unit 2," Advanced Nuclear Fuels Corporation, Richland, WA 99352.

(Methodology for Specification 3.2.1 - Axial Flux Difference, and 3.2.2 - Heat Flux Hot Channel Factor).

9. WCAP-9272-P-A, "WESTINGHOUSE RELOAD SAFETY EVALUATION METHODOLOGY", July 1985 (W Proprietary).

(Methodology for Specification 3.2.2 - Heat Flux Hot Channel Factor and 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

10. WCAP-10266-P-A, Rev. 2, "The 1981 Version of the WESTINGHOUSE ECCS EVALUATION MODEL USING THE BASH CODE", March 1987 (W Proprietary).

(Methodology for Specification 3.2.2 - Heat Flux Hot Channel Factor).

11. WCAP-11837-P-A, "EXTENSION OF METHODOLOGY FOR CALCULATING TRANSITION CORE DNBR PENALTIES", January 1990 (W Proprietary).

(Methodology for Specification 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

12. EMF-92-081(A), and Supplement 1, "Statistical Setpoint/Transient Methodology for Westinghouse Type Reactors," Siemens Power Corporation, Richland, WA 99352.

(Methodology for Specification 3.1.1.3 - Moderator Temperature Coefficient, 3.1.3.5 - Shutdown Bank Insertion Limits, 3.1.3.6 Control Bank Insertion Limits, 3.2.1 - Axial Flux Difference, 3.2.2 - Heat Flux Hot Channel Factor, and 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

13. EMF-92-153(A), and Supplement 1, "HTP: Departure from Nucleate Boiling Correlation for High Thermal Performance Fuel," Siemens Nuclear Power Corporation, Richland, WA 99352.

(Methodology for Specification 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

Page 7 of 11 Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 3.0 METHODOLOGY REFERENCES (Continued)

14. XN-NF-82-49(A), Revision 1, and XN-NF-82-49(P), Revision 1, Supplement 1, "Exxon Nuclear Company Evaluation Model EXEM PWR Small Break Model," Exxon Nuclear Company, Richland, WA 99352.

(Methodology for Specification 3.2.1 - Axial Flux Difference, 3.2.2 - Heat Flux Hot Channel Factor, and 3.2.3 - Nuclear Enthalpy Rise Hot Channel Factor).

Page 8 of ll Shearon Harris Unit l Cycle 6 Core Operating Limits Report - Rev. 2 Shearon Harris Unit 1 Cycle 6 FIGURE 1 ROD GROUP INSERTION LIMITS VERSUS THERMAL POWER (THREE-LOOP OPERATION) 240 220 t,.554, 231) 200 SAN}C C:

~ ~

160 (1,i186) 140 e (O,',:128)

I Z 120 I

O E

V)

C) 100 '

Q BIANII: D 80 Kl Ci 60 40 0 ~

20 I I I I

0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 FRACTION OF RATED THERMAL POWER (Fully withdrawn shall he 231 steps)

Note: Control Banks A and B Must be Withdrawn From The Core Prior to Power Operation

Page 9 of 11 Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 Shearon Harris Unit 1 Cycle 6 FIGURE 2 AXIALFLUX DIFFERENCE LIMITS AS A FUNCTION OF RATED THERMAL POWER 120 110

~~

(-1Q, 100) (7, 1QO) 100 UNA'CCfPTABLg UNAQCEPTAPLE.

90 O

so ~~ ~ ~~ ~

4~

<C ~ ~ ~ ~ ~~ ~ ~~ ~~ ~ ~

0L 70 IJJ

~ ~ ~ ~~~~

ACCEPTABLE

~~~~~

I eo ~ ~

I~ ~~~ ~ ~ ~

lL t28, 50),:

50 O

40 O 4 I

P 30 20 10 0

-50 -40 -30 -20 -10 0 10 20 30 40 50 AXIALFLUX DIFFERENCE (% DELTA-I)

(DEVIATION FROM TARGET AFD)

Page 10 of 11 Shearon Harris Unit 1 Cycle 6 Core Operating Limits Report - Rev. 2 Shearon Harris Unit 1 Cycle 6 FIGURE 3 K(Z) LOCAL AXIALPENALTY FUNCTION FOR FQ(Z) 1.2 I I I

r I I I I I (O'O ) 0)' I I I I o

(6 Q 1 0) o ~ ~ ~

0 I (12.8, Qr925)

\

0.9 I O ~ ~ ~ ~

I I

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ I ~ ~

O I ~ I I

<~C I

0.8 I z ~ ~

0.7 ~ ~ ~ ~ ~

CL CI IJJ N r 0 0.6 I

I I I

O 0

~ ~

Z 0 .5 0

I I 0.4

~ ~

I 0.3 ~ ~

I I

I

\

0.2 0 1 2 3 4 5 6 7 8 9 10 11 12 CORE HEIGHT (Feet)

Page 11 of 11 Shearon Harris Unie 1 Cycle 6 Core Operating Limits Repore - Rev. 2 Figure 4 V(Z) Versus Core Height V Z He. V Z 0.0 1.0000 6.2 1.1549 0.2 1.0000 6.4 1.1491 1.180 0.4 1.0000 6.6 1.1419 0.6 1.0000 6.8 1.1382 0.8 1.0000 7.0 1.1365 1.160 1.0 1.0000 7.2 1.1351 1.2 1.0000 7.4 1.1326 1.4 1.0000 7.6 1.1294 1.140 1.6 1.0000 7.8 1.1269 1.8 1.1814 8.0 1.1255 2.0 1.1740 8.2 1.1241 1.120 2.2 1.1660 8.4 1.1215 2.4 1.1570 8.6 1.1175 2.6 1.1490 8.8 1.1142 f 1.100 2.8 1.1424 9.0 1.1115 3.0 1.1360 9.2 1.1091 1.080 3.2 1.1293 9.4 1.1070 3.4 1.1231 9.6 1.1070 3.6 1.1239 9.8 1.1077 1.080 3.8 1.1289 10.0 1.1120 4.0 1.1345 10.2 1.1202 4.2 1.1395 10.4 1.0000 1.040 4.4 1.1436 10.6 1.0000 4.6 1.1484 10.8 1.0000 4.8 1.1532 11.0 1.0000 1.020 5.0 1.1570 11.2 1.0000 5.2 1.1599 11.4 1.0000 5.4 1.1621 11.6 1.0000 1.000 6 2 8 10 11 12 5.6 1.1629 11.8 1.0000 RE HBCHr (rect) 5.8 1.1616 12.0 1.0000 6.0 1.1590

+ Note thae the top and bottom 15% are excluded per Technical Specification 4.2.2.2.

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