ML091680195

Interim 30-Day Response to Reference 2

ML091680195
Person / Time
Site:	Oconee
Issue date:	06/10/2009
From:	Baxter D Duke Energy Carolinas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML091680195 (4)

Text

Pk Duke DA VE BAXTER Vice President avEnergy Oconee Nuclear Station Duke Energy ON01 VP / 7800 Rochester Highway Seneca, SC 29672 864-873-4460 864-873-4208 fax June 10, 2009 dabaxter@dukeenergy,com U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C., 20555-0001

Subject:

Duke Energy Carolinas, LLC Oconee Nu6lear Station, Units 1, 2, and 3 Renewed Facility Operating License, DPR-38, DPR-47, and DPR-55 Docket Numbers 50-269, 50-270, and 50-287 Interim 30-Day Response to Reference 2.

References:

1. Duke Letter from Dave Baxter to NRC Document Control Desk, ý"Request for Extension of Duke Response Time to Referenced Letter [Reference 2]" dated May 20, 2009.

2. NRC Letter from Joseph G. Giitter to Dave Baxter, "Evaluation of Duke Energy Carolinas, LLC (Duke), September 26, 2008, Response to Nuclear Regulatory Commission (NRC) Letter dated August 15, 2008, Related to External Flooding at Oconee Nuclear Station, Units 1, 2, and 3 (Oconee) (TAC Nos. MD8224, MD8225, and MD8226)," dated April 30, 2009.

On May 11, 2009, Duke Energy Carolinas, LLC (Duke), Federal Energy Regulatory Commission (FERC) and Hydropower Consultant HDR-DTA personnel participated in a closed meeting at NRC headquarters with representatives from the Office of Nuclear Reactor Regulation (NRR) and Region II. At that meeting, Duke presented information regarding preliminary inundation studies and sensitivity analyses involving a postulated failure of the Jocassee Dam and potential flooding at Oconee.

By letter dated April 30, 2009 (Reference 2), the NRC requested that Duke provide its plan and schedule for completing the final inundation studies and sensitivity analyses within 30 days following the May 11, 2009, meeting. In addition, the letter stated that the NRC and Duke This letter and attachment contain security sensitive information.

Withhold from Public Disclosure under 10 CFR 2.390 (d)(1) 4Tha www.duke-energy.com

U. S. Nuclear Regulatory Commission June 10, 2009 Page 2 will begin holding monthly status meetings in June 2009 to further discuss these issues. On May 20, 2009, Duke responded to the April 30, 2009, letter by committing to provide an interim response within 30 days following the May 11, 2009, meeting and a final response within 60 days following that meeting.

The purpose of this letter is to provide Duke's interim 30 day response which includes , "Tentative Project Schedule for Completing the Final Inundation Studies and Sensitivity Analyses." This schedule will be discussed with the NRC staff during the monthly meeting scheduled for June 11, 2009.

Since this letter and the attachment contain commercially sensitive information, Duke hereby requests the NRC withhold the letter and the attachment from public disclosure pursuant to 10 CFR 2.390 (d) (1), "Public inspections, exemptions, requests for withholding."

If you have any questions on this matter, please contact Jeff Thomas, Fleet Regulatory Compliance Manager, at 864-873-2790 (Oconee) or 704-382-3438 (Charlotte).

Sincerely, Dave Baxter, Vice President Oconee Nuclear Station

Attachment:

1. Tentative Project Schedule for Completing the Final Inundation Studies and Sensitivity Analyses This letter and attachment contain security sensitive information.

Withhold from Public Disclosure under 10 CFR 2.390 (d)(1)

U. S. Nuclear Regulatory Commission June 10, 2009 Page 3 bc:

Mr. Luis Reyes USNRC - Region II Sam Nunn Atlanta Federal Center, Suite 23T85, 61 Forsyth St., SW, Atlanta, GA 30303-8931 Mr. J. F. Stang, Project Manager Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop 0-8 G9A Washington, DC 20555 Mr. Andy Hutto NRC Senior Resident Inspector Oconee Nuclear Station Susan E. Jenkins, Manager, Infectious and Radioactive Waste Management, Bureau of Land and Waste Management Department of Health & Environmental Control 2600 Bull Street, Columbia, SC 29201

Attachment I Tentative Project Schedule for Completing the Final Inundation Studies and Sensitivity Analyses ID 0 Apr Jun Jul Aua Se -I Oct Nov ____

1 Simplified Analysis of West Oconee Yard Inundation 2 ......  : 6130 Origination of Analysis 3 711................. 7120 Verification of Analys 4 7121 F: 8117 Final Report 5

w 2D Modeling and Analysis of West Oconee Yard Inundation 6/22 7/15 7 Development of Boundary Cortions 7116 1-h8131 20 Hydraulic Analysis 8 911 9/15 Preliminary Rep 9M16 9130 Duke Review 10 1011 1Re 1o Final Report Key Parametei Selection and Determination of Variation 12 5/18 6/26 Identification of Key" Parameters 13 6129 17115 Determination of Variation of k Parameters 14 7116 7131

• Documentation of Selected Parameters and their Variation 15

'w HEC-RAS Sensitivity Inundation Analysis 16 5/25 Preliminary Analysis Results 9115 17 Duke Review 18 11012 115 Final Report 19 20 22 23 24 25 DateWWed 6/10109 task Progress Summary External Tasks Deadline Split Milestone Project Summary ýExternal Milestone

.Thi hlttlr and attarhmpnt rnntain ;Pnirity tpn~itivu inqnrmatinn Withhold from Public Disclosure under 10 CFR 2.390 (d)(1)