L-2008-087, Core Operating Limits Report, Cycle 24

Core Operating Limits Report, Cycle 24

ML081270202
Person / Time
Site:	Turkey Point
Issue date:	04/24/2008
From:	Jefferson W Florida Power & Light Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-2008-087
Download: ML081270202 (4)

Text

FPL April 24, 2008 L-2008-087 10 CFR 50.36 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555-00001 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 24.

Should there be any questions, please contact Olga Hanek, Licensing Manager, at 305-246-6607.

Very truly yours, William efferso , Jr.

Site Vice President Turkey Point Nuclear Plant Attachment cc: Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, Turkey Point Plant an FPL Group company

Attachment to L-2008-087 Page 1 of 3 CORE OPERATING LIMITS REPORT - UNIT 4 CYCLE 24 The Technical Specifications (TS) 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 - FAH The Control Rod Insertion Limits, AFD, FQ(Z), K(Z), and FAH have been developed using the NRC approved methodology specified in TS 6.9.1.7.

TS 3.1.3.2 Analog Rod Position Indication System The All Rods Out position for all Shutdown Banks and Control Banks is defined to be 228 steps withdrawn.

TS 3.1.3.6 Control Rod Insertion Limits The control rod banks shall be limited in physical insertion as shown on Figure 1 for All Rods Out = 228 steps withdrawn.

TS 3.2.1 Axial Flux Difference The AFD limits are provided on Figure 2.

TS 3.2.2 Heat Flux Hot Channel Factor - FQ(Z)

[FQ]L= 2 .5 0 K(Z) =-1.0 for 0 ft. < Z < 12 ft. where Z = core height.

TS 3.2.3 Nuclear Enthalpy Rise Hot Channel Factor RTP FAH = 1.70 PFAH = 0.3

ýr-Attachment to L-2008-087 Page 2 of 3 Figure 1 Turkey Point Unit 4 - Cycle 24 Rod Insertion Limits vs Thermal Power 230 ARO = 228 Steps Withdrawn, Overlap = 100 Steps 220 210 200 190 180 170 160

.4) 150 0 140 Z.

0 130 120 110 100 90 80 70 60 50 40 30 20 10 0

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

N-Attachment to L-2008-087 Page 3 of 3 Figure 2 Axial Flux Difference as a Function of Rated Thermal Power 120 TurkeyPoint Unit 4 - C cle 24 C,100) (+7,100) 100 ... .

w 0 80 _

C-

-j

< UNACCEPTABLE, U ACCEPTPBLE t6 OPERATION OPERATI N M.I-0 w

( ACCEPTABLE OPRA ION(+2 50) 0 4U 20 0.

20 30 21012345 r40

-50 -40 -30 -20 -10 0 10 20 30 40 50 IAxial Flux Difference (%)