ML090990533
| ML090990533 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 04/28/2009 |
| From: | Milano P Division of Operating Reactor Licensing |
| To: | Bhatnagar A Tennessee Valley Authority |
| Milano P, NRR/DORL, 415-1457 | |
| References | |
| TAC MD6581 | |
| Download: ML090990533 (3) | |
Text
April 28, 2009 Mr. Ashok S. Bhatnagar Senior Vice President Nuclear Generation Development and Construction Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801
SUBJECT:
WATTS BAR NUCLEAR PLANT, UNIT 2 - REQUEST FOR ADDITIOANL INFORMATION ON PROGRAMS FOR LICENSING BASIS PRESERVATION AND CONSTRUCTION REFURBISHMENT (TAC NO. MD6581)
Dear Mr. Bhatnagar:
In a letter dated December 9, 2008, to the U.S. Nuclear Regulatory Commission (NRC), the Tennessee Valley Authority (TVA) provided responses to two commitments regarding licensing basis preservation and construction refurbishment programs at Watts Bar Nuclear Plant (WBN),
Unit 2. Specifically, TVA submitted the New Generation Development and Construction Procedure PP-20, "Unit 2 Licensing Basis Preservation," which describes the methods or processes for determining potential changes that could affect the Unit 2 licensing basis as design and construction activities progress. Also, TVA submitted Procedure 25402-000-GPP-0000-TI216, 'Watts Bar Unit 2 Completion Project Refurbishment Program," which addresses examinations, refurbishment, restorations, and testing required prior to issuance of the Unit 2 operating license in order to assure that systems, structures, and components (SSCs) meet or exceed original specifications. The lay-up activities for many of these SSCs were terminated for a period of time prior to resuming construction activities.
The NRC staff has reviewed your submittals and finds that they do not provide sufficient detail for us to conclude that the specified actions are sufficient to address the purpose of the programs. Regarding the Unit 2 Licensing Basis Preservation Program, the staff requests that TVA provide a more detailed summary of the process steps used to implement each of the screening questions, any corresponding evaluation criteria, and documentation of the results, and TVAs plans for assessing the performance of the overall process. Regarding the completion project refurbishment program, the NRC staff requests that TVA provide a discussion of the rationale for the selection of components to be refurbished based on the expected degradation mechanisms and the guidance that will be used to insure the objective and consistent application of refurbishment activities.
We suggest that you schedule a public meeting with us to discuss these programs, including how TVA plans to address the issues raised in this letter including program implementation and the criteria to assess program goals. The NRC recommends that this meeting take place before TVA prepares its written response to the specific questions in this request for additional information. This will allow the NRC staff to better understand the overall programs and the level of detail that will be needed to complete the staffs evaluation.
If you should have any questions, please contact me at 301-415-1457.
Sincerely,
/RA/
Patrick D. Milano, Senior Project Manager Watts Bar Special Projects Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-391 cc: Distribution via Listserv
We suggest that you schedule a public meeting with us to discuss these programs, including how TVA plans to address the issues raised in this letter including program implementation and the criteria to assess program goals. The NRC recommends that this meeting take place before TVA prepares its written response to the specific questions in this request for additional information. This will allow the NRC staff to better understand the overall programs and the level of detail that will be needed to complete the staffs evaluation.
If you should have any questions, please contact me at 301-415-1457.
Sincerely,
/RA/
Patrick D. Milano, Senior Project Manager Watts Bar Special Projects Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-391 cc: Distribution via Listserv DISTRIBUTION:
RidsOgcRp Resource RidsRgn2MailCenter Resource PUBLIC RidsNrrDorlLpwb Resource RidsNrrDe Resource LPWB Reading File RidsNrrLABClayton Resource RidsNrrDss Resource RidsNrrPMWattsBar2 Resource RidsRgn2MailCenter Resource RidsAcrsAcnw_MailCTR Resource RidsNrrDci Resource ADAMS Accession No.:ML090990533 OFFICE LPWB/PM LPWB/LA R-II/DCP/BC LPWB/BC NAME PMilano BClayton RHaag LRaghavan DATE 04/27/09 04/27/09 04/14/09 04/ 28 /09 OFFICIAL AGENCY RECORD