CPSES-200700099, Annual Report of Changes in Peak Cladding Temperature

Annual Report of Changes in Peak Cladding Temperature

ML070170348
Person / Time
Site:	Comanche Peak
Issue date:	01/10/2007
From:	Madden F TXU Power
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CPSES-200700099, TXX-07004
Download: ML070170348 (3)

Text

TXU Power TXU Power Mike Blevins Comanche Peak Steam Senior Vice President &

Electric Station Chief Nuclear Officer P. C. Box 1002 (E01)

Gl!en Rose, TX 76043 Ref: #10CFR50.46 Tel: 254 897 5209 Fax: 254 897 6652 mike.blevins@txu.com CPS ES-200700099 Log # TXX-07004 January 10, 2007 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NOS. 50-445 AND 50-446 ANNUAL REPORT OF CHANGES IN PEAK< CLADDING TEMPERATURE

Dear Sir or Madam:

In accordance with the requirements of I OCFR50.46(a)(3)(ii), TXU Generation Company LP (TXU Power) submits the attached peak cladding temperatures (PCT) for CPSES Units 1 and 2. The Large-Break Loss-of-Coolant-Accident and Small-Break Loss-of-Coolant-Accident analysis for Units I and 2 were performed by TXU Power with the approved methodologies listed in CPSES Technical Specification 5.6.5. It was determined that there were no changes or errors in the Emergency Core Cooling System (ECCS) evaluation model used to calculate peak cladding temperature (PCT).

This communication contains no new licensing basis commitments regarding CPSES Units I and 2.

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

• Comanche Peak . Diablo Canyon

• Palo Verde

• South Texas Project

• Wolf Creek

TXX-07004 Page 2 of 2 Should you have any questions, please contact Mr. Jimmy Seawright at (254) 897-0140.

Sincerely, TXU Generation Company LP By: TXU Generation Management Company LLC Its General Partner Mike Blevins By

'rdW. Madden Director, Oversight and Regulatory Affairs JDS Attachment c - B. S. Mallett, Region IV M. C. Thadani, NRR Resident Inspectors, CPSES

Attachment to TXX-07004 Page 1 of I CPSES Units 1 and 2 Peak Cladding Temperatures Analysis/Evaluation CPSES Unit 1 CPSES Unit 2 PCT (F) PCT (°V)

Large Break LOCA 2053 2058

[Limiting]

Small Break LOCA 1841 1832