L-2011-118, Core Operating Limits Report

Core Operating Limits Report

ML11109A047
Person / Time
Site:	Turkey Point
Issue date:	04/11/2011
From:	Kiley M Florida Power & Light Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-2011-118
Download: ML11109A047 (4)

Text

0FPL.

POWERING TODAY. APR 11 2011 EMPOWERING TOMORROW.

L-2011-118 10 CFR 50.36 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555-0001 Re: Turkey Point Unit 4 Docket No. 50-251 Core Operating Limits Report In accordance with Technical Specification 6.9.1.7, the attached Core Operating Limits Report is provided for Turkey Point Unit 4. These curves are applicable for Unit 4 Cycle 26.

Should there be any questions, please contact Robert Tomonto, Licensing Manager, at 305-246-7327.

Very truly yours, Michael Kiley Site Vice President Turkey Point Nuclear Plant Attachment cc: Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, Turkey Point Plant WL~

an FPL Group company

Attachment to L-2011-118 Page 1 of 3 Turkey Point Unit 4 Cycle 26 Core Operating Limits Report 1.0 Introduction The Core Operating Limits Report (COLR) for Turkey Point Unit 4 Cycle 26 has been prepared in accordance with the requirements of Technical Specifications 6.9.1.7.

The Technical Specifications affected by this report are:

3.1.3.2 Analog Rod Position Indication System 3.1.3.6 Control Rod Insertion Limits 3.2.1 Axial Flux Difference (AFD) 3.2.2 Heat Flux Hot Channel Factor FQ(z) 3.2.3 Nuclear Enthalpy Rise Hot Channel Factor 2.0 Operating Limits The Control Rod Insertion Limits, AFD, FQ(z), K(z), and FAH have been developed using the NRC approved methodology specified in Technical Specification 6.9.1.7.

These limits are provided in the following subsections:

2.1 Analog Rod Position Indication System (TS 3.1.3.2)

The All Rods Out (ARO) position for all shutdown Banks and Control Banks is defined to be 228 steps withdrawn.

2.2 Control Rod Insertion Limits (TS 3.1.3.6)

The control rod banks shall be limited in physical insertion as shown in Figure Al for ARO = 228 steps withdrawn.

2.3 Axial Flux Difference (TS 3.2.1)

The Axial Flux Difference (AFD) limits are provided in Figure A2.

2.4 Heat Flux Hot Channel Factor Fe(z) (TS 3.2.2)

[F0 ]L = 2.50 K(z) = 1.0 for 0 ft. < z*< 12 ft. where z = core height.

2.5 Nuclear Enthalpy Rise Hot Channel Factor (TS 3.2.3)

FAHRTP = 1.70 PFAH =0.3

Attachment to L-2011-118 Page 2 of 3 Figure Al Turkey Point Unit 4 Cycle 26 Rod Insertion Limits vs Thermal Power ARO = 228 Steps Withdrawn, Overlap = 100 Steps 230 220 (55 63.5228)1.,,

210 200 190 180 Bank C__ - _

170 160 V

150 140 a) 130 120 110 0

100 0 90 80 cc 70 .11th 0I5 60 50 40 30 20 10 0

0 10 20 30 40 50 60 70 80 90 100 Percent Reactor Power

40 Attachment to L-2011-118 Page 3 of 3 Figure A2 Axial Flux Difference as a Function of Rated Thermal Power Turkey Point Unit 4 Cycle 26 120

(-1 100) (+7,100 100 0.

(-1050) AA2LEURE (+2kiO) 4U

-50 -40 -30 -20 -10 0 10 20 30 40 50 Aa Rx Differec (%)4