CPSES-200601897, License Amendment Request (LAR) 05-005, Revision to Technical Specification 3.7.10, Control Room Emergency Filtration/Pressurization System (Crefs).

License Amendment Request (LAR)05-005, Revision to Technical Specification 3.7.10, Control Room Emergency Filtration/Pressurization System (Crefs).

ML062700200
Person / Time
Site:	Comanche Peak
Issue date:	09/18/2006
From:	Madden F TXU Power
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
00236, CPSES-200601897, TAC MC8163, TAC MC8164, TXX-06161
Download: ML062700200 (3)

Text

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Senior Vice President &

TXU Power Chief Nuclear Officer Ref. 10CFR50.90 Comanche Peak Steam Electric Station P. O. Box 1002 (E01)

Glen Rose, TX 76043 Tel: 254 897 5209 Fax: 254 897 6652 mike.blevins@txu.com CPSES-200601897 Log # TXX-06161 File # 00236 September 18, 2006 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 LICENSE AMENDMENT REQUEST (LAR)05-005, REVISION TO TECHNICAL SPECIFICATION 3.7.10, "CONTROL ROOM EMERGENCY FILTRATION/PRESSURIZATION SYSTEM (CREFS)" (TAC NOS. MC8163 AND MC8164)

REF: 1) TXU Power Letter, Logged TXX-05127, from Mike Blevins to Nuclear Regulatory Commission, dated August 22, 2005

2) NRC Letter from Mohan C. Thadani to M. R. Blevins, dated August 18, 2006

3) TSTF Letter, Logged TSTF-06-18, from Technical Specifications Task Force to Nuclear Regulatory Commission, dated August 8, 2006 Gentlemen:

TXU Generation Company LP (TXU Power) submitted License Amendment Request 05-005 (Reference 1) to the CPSES Unit 1 Operating License (NPF-87) and CPSES Unit 2 Operating License (NPF-89). The NRC staff completed their initial review of Reference 1 and conveyed their concerns by letter dated August 18, 2006 (Reference 2).

The NRC noted some of their concerns with LAR-05-005 and that TSTF-448 was not available for use at this time and requested the licensee to provide an alternative to resolve the concerns identified. Reference 2 requested a response within 30 days from the date of Reference 2. This letter provides TXU Power's response.

A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway - Comanche Peak - Diablo Canyon - Palo Verde - South Texas Project - Wolf Creek

TXX-06161 Page 2 of 3 Reference 1 requested (1) approval of new methods and assumptions for evaluating the radiological consequences of design accidents resulting from the adoption of Regulatory Guide 1.195, "Methods and Assumptions for Evaluating Radiological Consequences of Design Accidents at Light-Water Nuclear Power Reactors," May 2003, and (2) approval of a proposed control room habitability program as described in proposed TS 3.7.10, "Control Room Emergency Filtration/Pressurization System (CREFS)" and TS 5.5.20, "Control Room Envelope Habitability Program." As noted in Reference 1, approval of the new methods and assumptions for radiological consequences is required to support the replacement of the Unit 1 steam generators in the spring of 2007. The new methods and assumptions were presented in FSAR Chapters 1, 6, and 15 for NRC review and approval in Attachment 6 of Reference 1.

No concerns related to the new methods and assumptions for evaluating the radiological consequences were identified in Reference 2. Please continue your review of the new methods and assumptions for evaluating the radiological consequences as part of LAR-05-005 (TAC NOS. MC8163 and MC8164).

The control room habitability program provided in proposed Technical Specifications is not needed by TXU Power to support the steam generator replacement. However, previous discussions with the NRC staff indicated that NRC approval of the adoption of Regulatory Guide 1.195 is contingent upon adoption of a control room habitability program. Therefore, a proposed control room habitability program was submitted in Reference 1 and will be updated as described below.

On August 8, 2006, TSTF-448, Revision 3, "Control Room Habitability," was submitted to the NRC (Reference 3). Based on discussion with the Control Room Habitability Technical Specification Task Force, TXU Power understands that the NRC expects to publish TSTF-448, Revision 3, in the Federal Register for public comments by the end of September 2006. Upon issuance of the notice in the Federal Register of the availability of TSTF-448-R3 for public comment, TXU Power will submit a supplement to LAR-05-005. The supplement will update LAR-05-005 by revising the control room habitability program to be consistent with TSTF-448, Revision 3, and should address the NRC's concerns identified in Reference 2.

In accordance with 10CFR50.91 (b), TXU Power is providing the State of Texas with a copy of this proposed amendment.

TXX-06161 Page 3 of 3 Should you have any questions, please contact Mr. Carl B. Corbin at (254) 897-0121.

I state under penalty of perjury that the foregoing is true and correct.

Executed on September 18, 2006.

Sincerely, TXU Generation Company LP By: TXU Generation Management Company LLC Its General Partner Mike Blevins By: /'J j 3'27,.

/Fred W. Madden' Director, Regulatory Affairs CBC c - B. S. Mallet, Region IV M.C. Thadani, NRR Resident Inspectors, CPSES Ms. Alice Rogers Bureau of Radiation Control Texas Department of Public Health 1100 West 49th Street Austin, Texas 78756-3189