CP-200900007, Submittal of Annual Report of Changes in Peak Cladding Temperature

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Submittal of Annual Report of Changes in Peak Cladding Temperature
ML090230627
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 01/08/2009
From: Blevins M
Luminant Generation Co, Luminant Power
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
CP-200900007, TXX-09002
Download: ML090230627 (3)


Text

um Mike Blevins Luminant Power Executive Vice President P 0 Box 1002

& Chief Nuclear Officer 6322 North FM 56 Luminant Mike.Blevins@Luminant.com Glen Rose, TX 76043 T 254 897 5209 C 817 559 9085 F 254 897 6652 CP-200900007 Ref. # 10CFR50.46 Log # TXX-09002 January 8, 2009 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION DOCKET NOS. 50-445 AND 50-446 ANNUAL REPORT OF CHANGES IN PEAK CLADDING TEMPERATURE

Dear Sir or Madam:

Pursuant to 10CFR50.46(a)(3)(ii), Luminant Generation Company LLC (Luminant Power) hereby submits the attached peak cladding temperatures (PCT) for Comanche Peak Steam Electric Station (herein referred to as Comanche Peak Nuclear Power Plant - CPNPP) Units 1 and 2. The Large-Break Loss-of-Coolant-Accident and Small-Break Loss-of-Coolant-Accident analysis for Units 1 and 2 were performed for Luminant Power with the approved Westinghouse methodologies listed in Technical Specification 5.6.5. It was determined that the PCT penalty for Unit 1 Cycle 14 is due to core design characteristics and does not represent a change or error in the Emergency Core Cooling System (ECCS) evaluation model since the most recent CPNPP analyses were approved by the NRC in License Amendment 145 on April 3, 2008.

This communication contains no new licensing basis commitments regarding CPNPP Units 1 and 2.

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A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway Comanche Peak

  • Diablo Canyon
  • Palo Verde
  • San Onofre
  • Wolf Creek

U. S. Nuclear Regulatory Commission TXX-09002 Page 2 January 8, 2009 Should you have any questions, please contact Mr. J. D. Seawright at (254) 897-0140.

Sincerely, Luminant Generation Company LLC Mike Blevins By: ,4-2674LL

!Fred W. Madden Director, Oversight & Regulatory Affairs Attachments - CPNPP Units 1 and 2 Peak Cladding Temperatures c- E. E. Collins, Region IV B. K. Singal, NRR Resident Inspectors, Comanche Peak 4

Attachment to TXX-09002 Page 1 of I CPNPP Units 1 and 2 Peak Cladding Temperatures Analysis CPNPP Unit 1 CPNPP Unit 2 Evaluation PCT (TF) PCT (TF)

Large Break LOCA 1524 1632 (1492+32)*

Small Break LOCA 1013 1210

  • A 32°F penalty for UIC14 core design characteristics.