ML081750635

Generic Letter 2004-02, Supplemental Response

ML081750635
Person / Time
Site:	Oconee
Issue date:	07/01/2008
From:	Olshan L NRC/NRR/ADRO/DORL/LPLII-1
To:	Baxter D Duke Energy Carolinas
Olshan L N, NRR/DLPM, 415-1419
References
GL-04-002, TAC MC4698, TAC MC4699, TAC MC4700
Download: ML081750635 (4)

Text

July 1, 2008 Mr. David A. Baxter Vice President, Oconee Site Duke Energy Carolinas, LLC 7800 Rochester Highway Seneca, SC 29672

SUBJECT:

GENERIC LETTER 2004-02 SUPPLEMENTAL RESPONSE - OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 (TAC NOS. MC4698, MC4699, AND MC4700)

Dear Mr. Baxter:

By letter dated February 29, 2008, you submitted a supplemental response to Generic Letter 2004-02, "Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at Pressurized-Water Reactors, for Oconee Nuclear Station, Units 1, 2, and 3 (Oconee). We have reviewed your submittal with a process that involved a detailed review by a team of 10 subject matter experts, with focus on the review areas described in the U.S. Nuclear Regulatory Commissions (NRC's) "Content Guide for Generic Letter 2004-02 Supplemental Responses" (ML073110389). The review process also included a separate "holistic" review of your submittal informed by inputs from the subject matter experts that focused on whether you have demonstrated overall that your corrective actions for Generic Letter 2004-02 are adequate.

We have no further questions at this time regarding your completion of corrective actions for Generic Letter (GL) 2004-02. In large part this conclusion is based on the very low potential debris loading at Oconee, as discussed in your supplemental response.

As you may be aware, we have not yet issued a final safety evaluation (SE) on WCAP 16793 NP, Evaluation of Long-Term Cooling Considering Particulate, Fibrous, and Chemical Debris in the Recirculating Fluid." We believe that the likelihood of unacceptable in-vessel debris impact for Oconee is very low because of the low debris loading. However, because your GL 2004-02 response refers to and relies on this topical report, we plan to defer issuance of a closure letter to Oconee for the GL until uncertainties regarding the remaining issues with WCAP-16793 are reduced. You may wait for the issue to be resolved through the WCAP process or may demonstrate that in-vessel downstream effects issues are resolved for Oconee by demonstrating without reference to WCAP-16793 or the NRC staff SE that in-vessel downstream effects have been addressed at Oconee. We are developing a Regulatory Issue Summary to inform the industry of our expectations and plans regarding resolution of this remaining aspect of GSI-191.

D. Baxter In addition, you have committed to certain corrective actions that have not yet been performed.

We expect that you will report completion of these remaining items to the NRC after the last one has been implemented.

If you have any further questions on this matter, please contact me at 301-415-1419.

Sincerely,

/RA/

Leonard N. Olshan, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287 cc: See next page

D. Baxter In addition, you have committed to certain corrective actions that have not yet been performed.

We expect that you will report completion of these remaining items to the NRC after the last one has been implemented.

If you have any further questions on this matter, please contact me at 301-415-1419.

Sincerely,

/RA/

Leonard N. Olshan, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287 cc: See next page Distribution:

PUBLIC LPL2-1 R/F RidsNrrDorlLpl2-1 (MWong)

RidsNrrLAMOBrien (hard copy)

RidsNrrPMLOlshan (hard copy)

RidsOgcRp RidsAcrsAcnw_MailCenter RidsRgn2MailCenter (JMoorman)

RidsNrrDorlDpr M. Scott, NRR Accession Number: ML081750635 OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA DSS/SSIB/BC NRR/LPL2-1/BC NAME LOlshan MOBrien MScott MWong DATE 06/30/08 06/30/08 06/30/08 07/01/08 OFFICIAL RECORD COPY

Oconee Nuclear Station, Units 1, 2, and 3 cc:

Mr. Dave Baxter Mr. Leonard G. Green Vice President, Oconee Site Assistant Attorney General Duke Power Company LLC NC Department of Justice 7800 Rochester Highway P.O. Box 629 Seneca, SC 29672 Raleigh, NC 27602 Ms. Lisa F. Vaughn Mr. R. L. Gill, Jr.

Associate General Counsel and Managing Manager - Nuclear Regulatory Attorney Issues and Industry Affairs Duke Energy Carolinas, LLC Duke Power Company LLC 526 South Church Street - EC07H 526 S. Church St.

Charlotte, North Carolina 28202 Mail Stop EC05P Charlotte, NC 28202 Manager, LIS NUS Corporation Division of Radiation Protection 2650 McCormick Dr., 3rd Floor NC Dept of Environment, Health, & Natural Clearwater, FL 34619-1035 Resources 3825 Barrett Dr.

Senior Resident Inspector Raleigh, NC 27609-7721 U.S. Nuclear Regulatory Commission 7812B Rochester Highway Mr. Peter R. Harden, IV Seneca, SC 29672 VP-Customer Relations and Sales Westinghouse Electric Company Mr. Henry Porter, Director 6000 Fairview Road Division of Radioactive Waste Management 12th Floor Bureau of Land and Waste Management Charlotte, NC 28210 Dept. of Health and Env. Control 2600 Bull St. Mr. Henry Barron Columbia, SC 29201-1708 Group Vice President, Nuclear Generation and Chief Nuclear Officer Mr. B. G. Davenport P.O. Box 1006-EC07H Regulatory Compliance Manager Charlotte, NC 28201-1006 Oconee Nuclear Site Duke Energy Corporation Mr. Charles Brinkman ON03RC Director, Washington Operations 7800 Rochester Highway Westinghouse Electric Company Seneca, SC 29672 12300 Twinbrook Parkway, Suite 330 Rockville, MD 20852 Ronnie L. Gardner, PMP Manager, Site Operations and Corporate Ms. Kathryn B. Nolan Regulatory Affairs Senior Counsel AREVA NP Inc. Duke Energy Carolinas, LLC An AREVA AND Siemens Company 526 South Church Street - EC07H 3315 Old Forest Road OF -16 Charlotte, NC 28202 Lynchburg, VA 24501