core report operating limits harris unit 8 the ... · harris unit 1 cycle 8 core operating limits...

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Harris Unit 1 Cycle 8 Core Operating Limits Report - Rev. 1 Attachment 9 Sheet 1 of 12 1.0 CORE OPERATING LIMITS REPORT This Core Operating Limits Report (COLR) for Shearon Harris Unit 1 Cycle 8 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: 3/4.1.1.2 SHUTDOWN MARGIN - Modes 3, 4, and 5 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 - Fo(Z) 3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor - Fw 3/4.9.1.a Boron Concentration During Refueling Operations 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 SHUTDOWN MARGIN - Modes 3, 4, and 5 (Specification 3/4.1.1.2) The SHUTDOWN MARGIN versus RCS boron concentration - Modes 3, 4, and 5 is specified in Figure 1. 2.2 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/oF esoe290<7X eaom<P PDR ADQCK 05000400 P P DR/ PLP-106 Rev. 18 Page 70 of 84

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Page 1: CORE REPORT Operating Limits Harris Unit 8 the ... · Harris Unit 1 Cycle 8 Core Operating Limits Report-Rev. 1 Attachment 9 Sheet 1 of 12 1.0 CORE OPERATING LIMITS REPORT This Core

Harris Unit 1 Cycle 8Core Operating Limits Report - Rev. 1

Attachment 9Sheet 1 of 12

1.0 CORE OPERATING LIMITS REPORT

This Core Operating Limits Report (COLR) for Shearon Harris Unit 1 Cycle 8 has beenprepared in accordance with the requirements of Technical Specification 6.9.1.6.

The Technical Specifications affected by this report are listed below:

3/4.1.1.2 SHUTDOWN MARGIN - Modes 3, 4, and 5

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 - Fo(Z)

3/4.2.3 Nuclear Enthalpy Rise Hot Channel Factor - Fw

3/4.9.1.a Boron Concentration During Refueling Operations

2.0 OPERATING LIMITS

The cycle-specific parameter limits for the specifications listed in Section 1.0 arepresented in the following subsections. These limits have been developed usingNRC-approved methodologies specified in Technical Specification 6.9. 1.6 and given inSection 3.0.

2.1 SHUTDOWN MARGIN - Modes 3, 4, and 5 (Specification 3/4.1.1.2)

The SHUTDOWN MARGIN versus RCS boron concentration - Modes 3, 4, and 5 isspecified in Figure 1.

2.2 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 to0 pcm/~F at 100% RTP.

The Negative MTC Limit (ARO/RTP) shall be less negative than-45 pcm/oF

esoe290<7X eaom<PPDR ADQCK 05000400P P DR/

PLP-106 Rev. 18 Page 70 of 84

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Attachment 9Sheet 2 of 12

2.2 Moderator Tem erature Coefficient (Specification 3/4.1.1.3) (continued)

2. The MTC Surveillance limit is:The 300 ppm/ARO/RTP-MTC should be less negative than or equal to-37.65 pcm/~F.

where: ARO stands for All Rods OutHZP stands for Hot Zero THERMAL POWERRTP stands for RATED THERMAL POWER

2.3 Shutdown Rod Insertion Limit (Specification 3/4.1.3.5)

Fully withdrawn for all shutdown rods shall be 225 steps.

2.4 Control Rod Insertion Limit (Specification 3/4.1.3.6)

The control rod banks shall be limited in physical insertion as specified inFigure 2. Fully withdrawn for all control rods shall be 225 steps.

2.5 Axial Flux Difference (Specification 3/4.2.1)

The AXIAL FLUX DIFFERENCE (AFD) target band is specified in Figure 3.

2.6 Heat Flux Hot Channel Factor - F~(Z) (Specification 3/4.2.2)

Fq(Z) 5 Fq" * K(Z)/P for P > 0.5

FQ(Z) 5 Fq * K(Z)/0.5 for P 5 0.5

where: P = THERMAL POWER/RATED THERMAL POWER

Fo = 2.45 for LOPAR fuelFq" ' 2.52 for SPC fuel

K(Z) is specified in Figure 4.

V(Z) Curve for PDC-3 Operation is specified in Figure 5. The V(Z) curveis sufficient to determine the PDC-3 V(Z) versus core height for Cycle 8burnups through the end of full power reactivi,ty plus a coastdown for amaximum cycle energy of 513 EFPDs.

PLP-106 Rev. 18 Page 71 of 84

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

Fng 5 Fm * (1 + PF~ * (1 - P) )

where: P -" THERMAL POWER/RATED THERMAL POWER

a. Fm" = 1.62 for LOPAR fuel

b. Fm" = 1.73 for SPC fuel

c. Pox = 0.3 for LOPAR fuel

Pox = 0.35 for SPC fuel

2.8 Boron Concentration for Refuelin 0 erations (Specification 3/4.9.1.a)

Through the end of Cycle 8, the boron concentration required to maintain K,ffless than or equal to .95 is equal to 2300 ppm. Boron concentration must bemaintained greater than or equal to 2300 ppm during refueling operations.

3.0 METHODOLOGY REFERENCES

XN-75-27(A), and Supplements 1, 2, 3, 4, and 5, Exxon Nuclear NeutronicsDesign Methods for Pressurized Water Reactors, Exxon Nuclear Company,Richland, WA 99352.

(Methodology for Specification 3.1.1.2 - SHUTDOWN MARGIN - Modes 3, 4,and 5, 3. 1.1.3 - Moderator Temperature Coefficient, 3.1.3.5 - ShutdownBank 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 — BoronConcentration).

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

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

XN-NF-82-21(A), Revision 1, 'Application of Exxon Nuclear Company PWRThermal Margin Methodology to Mixed Core Configurations, Exxon NuclearCompany, Richland, WA 99352.

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

PLP-106 Rev. 18 page 72 of 84

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3.0 METHODOLOGY REFERENCES (continued)

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

(Methodology for Specification 3.2.2 - Heat Flux Hot Channel Factor, and3.2.3 - 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 TemperatureCoefficient, 3.1.3.5 - Shutdown Bank Insertion Limits, 3.1.3.6 - ControlBank Insertion Limits, and 3.2.3 - Nuclear Enthalpy Rise Hot ChannelFactor) .

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 NuclearCompany Evaluation Model EXEM/PWR ECCS Model Updates,'xxon NuclearCompany, Richland, WA 99352.

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

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

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

XN-NF-85-105(A), and Supplement 1, Scaling of FCTF Based Reflood HeatTransfer 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 RiseHot Channel Factor).

XN-NF-78-44(A), A Generic Analysis of the Control Rod Ejection Transientfor 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 HotChannel Factor).

PLP-106 Rev. 18 Page 73 of 84

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3.0 METHODOLOGY REFERENCES (continued)

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

(Methodology for Specification 3.2.1 - Axial Flux Difference, and3.2.2 - Heat Flux Hot Channel Factor).

WCAP-9272-P-A, 'WESTINGHOUSE RELOAD SAFETY EVALUATIONMETHODOLOGY,'uly

1985 (W Proprietary).

(Methodology for Specification 3.1.1.2 - SHUTDOWN MARGIN - Modes 3, 4,and 5, 3.2.2 - Heat Flux Hot Channel Factor, and 3.2.3 - Nuclear EnthalpyRise Hot Channel Factor).

10. WCAP-10266-P-A, Rev. 2, "The 1981 Version of the WESTINGHOUSE ECCSEVALUATION 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 CALCULATZNG TRANSITION COREDNBR PENALTIES, January 1990 (W Proprietary).

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

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

(Methodology for Specification 3.1.1.3 - Moderator TemperatureCoefficient, 3.1.3.5 - Shutdown Bank Insertion Limits, 3.1.3.6 - ControlBank Znsertion Limits, 3.2.1 - Axial Flux Difference, 3.2.2 - Heat FluxHot Channel Factor, and 3.2.3 - Nuclear Enthalpy Rise Hot ChannelFactor).

13. EMF-92-153(A), and Supplement 1, HTP: Departure from Nucleate BoilingCorrelation for High Thermal Performance Fuel,'iemens Nuclear PowerCorporation, Richland, WA 99352.

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

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 RiseHot Channel Factor).

PLP-106 Rev. 18 Page 74 of 84

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4.0 OTHER RE UIREMENTS

4.1 Movable Incore Detection S stem

l. O~ezabklit: Ths Movable lncote Detection System shall be OPERABLE with:

At least 38 detector thimbles at beginning of cycle (75% of thetotal number), where the beginning of cycle is defined in thisinstance as a flux map determination that the core is loadedconsistent with design,

A minimum of 38 detector thimbles for the remainder of theoperating cycle,

c. A minimum of two detector thimbles per core quadrant, and

Sufficient movable detectors, drive, and readout equipment to mapthese thimbles.

a. Recalibration of the Excore Neutron Flux Detection System, or

b. Monitoring the QUADRANT POWER TILT RATIO, or

c. Measurement of Fm and Fo(Z)

Surveillance Re uirements: The Movable Incore Detection System shall bedemonstrated OPERABLE, within 24 hours prior to use, by irradiating eachdetector used and determining the acceptability of its voltage curve whenrequired for:

a. Recalibration of the Excore Neutron Flux Detection System, or

b. Monitoring the QUADRANT POWER TILT RATIO, or

c. Measurement of Fns and Fq(Z)

Bases

The OPERABILITY of the movable incore detectors with the specifiedminimum complement of equipment ensures that the measurements obtainedfrom use of this system accurately represent the spatial neutron fluxdistribution of the core. The OPERABZLZTY of this system is demonstratedby irradiating each detector used and determining the acceptability ofits voltage curve.

For the purpose of measuring Fg(Z) or F~, a full incore flux map is used.

Quarter-core flux maps, as defined in WCAP-8648, June 1976, may be usedin recalibration of the Excore Neutron Flux Detection System, and fullincore flux maps or symmetric incore thimbles may be used for monitoringQUADRANT POWER TILT RATIO when one Power Range channel is inoperable.

PLP-106 Rev. 18 Page 75 of 84

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4.0 OTHER RE UIREMENTS (continued)

Evaluation Re uirements

Zn order to change the requirements concerning the number and location ofoperable detectors, the NRC staff deems that a rigorous evaluation andjustification is required. The following is a list of elements that mustbe part of a 50.59 determination and available for audit if the licenseewishes to change the requirements:

How an inadvertent loading of a fuel assembly into an improperlocation will be detected,

How the validity of the tilt estimates will be ensured,

How adequate core coverage will be maintained,

How the measurement uncertainties will be assured and why theadded uncertainties are adequate to guarantee that measurednuclear heat flux hot channel factor, nuclear enthalpy rise hotchannel factor, radial peaking factor and quadrant power tiltfactor meet Technical Specification limits, and

How the Movable Xncore Detection System will be restored to full(or nearly full) service before the beginning of each cycle.

PLP-106 Rev. 18 Page 76 of 84

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~I

CoreHarris Unit 1 Cycle 8

Operating Limits Report - Rev. 1

Figure 1

Attachment 9Sheet 8 of 12

Shutdown Margin Versus RCS Boron ConcentrationModes 3, 4, and 5/Drained

* Applicable to Mode 4, with or without RCPs in operation

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REQUIRED RCS BORON CONCENTRATION (ppm)

PLP-106 Rev. 18 Page 77 of 84

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Figure 2

Rod Group Insertion Limits Versus Thermal Power(Three-Loop Operation)

240

220

(,522,225)

180

e 160'D

5e 140

g 120

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(0,0)0

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

FRACTION OF RATED THERMALPOWER

(Fully withdrawn shall be 225 steps)

Note: Control Banks A and B must be withdrawn fromthe core prior to power operation.

0.9

PLP-106 Rev. 18 Page 78 of 84

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Figure 3

Axial Flux Difference Limits as a Function ofRated Thermal Power

120

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

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AXIALFLUX DIFFERENCE (% DELTA—I)

(DEVIATIONFROM TARGET AFD)

Note: At power levels less than HFP, the deviation is applied to thetarget AFD appropriate to that power level. The target AFD varies linearly

between the HFP target and zero at zero power.

PLP-106 Rev. 18 Page 79 of 84

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Figure 4

K(Z) - Local Axial Penalty Function for FQ(Z)

1.2

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CORE HElGHT (Feet)

PLP-106 Rev. 18 Page 80 of 84

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Harris Unit 1 Cycle 8Core Operating Limits Report - Rev. 1

Attachment 9Sheet 12 of 12

Figure 5V(Z) Versus Core Height

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Note: Top and bottom 1 5% excluded as per Technical Specifications 4.2.2.2.g

PLP-106 Rev. 18 Page 81 of

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