ONS-2014-073, Submission of Supporting Documentation for the March 12, 2013, Flooding Hazard Reevaluation Report

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Submission of Supporting Documentation for the March 12, 2013, Flooding Hazard Reevaluation Report
ML14139A174
Person / Time
Site: Oconee  Duke Energy icon.png
Issue date: 05/15/2014
From: Batson S
Duke Energy Carolinas
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
ONS-2014-073
Download: ML14139A174 (3)
v • d • e


Text

Scott L. Batson DUKE Vice President Oconee NuclearStation ENERGY, Duke Energy ONOIVP I 7800 Rochester Hwy Seneca, SC 29672 o: 864.873.3274 ONS-2014-073 f 864.873. 4208 Scoft.Batson@duke-energy.com May 15, 2014 ATTN: Document Control Desk 10 CFR 50.54(f)

U.S. Nuclear Regulatory Commission Washington, DC 20555 Duke Energy Carolinas, LLC (Duke Energy)

Oconee Nuclear Station, Units 1, 2 and 3 Docket Numbers 50-269, 50-270, 50-287 Renewed License Numbers DPR-38, DPR-47, and DPR-55

Subject:

Submission of Supporting Documentation for the March 12, 2013, Flooding Hazard Reevaluation Report

References:

1, NRC Letter, Request for Information Pursuantto Title 10 of the Code of Federal Regulations 50.54(o Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichiAccident, dated March 12, 2012, (ADAMS Accession No. ML12053A340)

2. Duke Energy Letter, "FloodHazard Reevaluation Report in response to NRC letter, "Request for Information Pursuantto Title 10 of the Code of FederalRegulations 50.54(0 Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichiAccident," dated March 12, 2013 Ladies and Gentlemen, By letter dated March 12, 2013, Duke Energy submitted the ONS Flood Hazard Reevaluation Report (FHRR) (Reference 2) in response to the NRC's March 12, 2012 request for information per 10 CFR 50.54(f) related to Fukushima (Reference 1). As a result of continuing communications with the NRC and FERC regarding the flood analysis in the FHRR, Duke Energy contracted the services of an independent reviewer to assess the Jocassee dam breach analysis for the purpose of addressing questions raised by both the Nuclear Regulatory Commission (NRC) and Federal Energy Regulatory Commission (FERC). The NRC has subsequently requested that Duke Energy submit the results of the independent review. Thus, a report titled; "Validationof HRR Breach Hydrographfor Jocassee Dam" by Joseph L. Ehasz, P.E. and Dr. David S. Bowles, P.E., dated April 2014, is provided as Enclosure 1.

It is Duke Energy's understanding that the NRC is responsible for forwarding the report to FERC, in support of FERC's acceptability assessment of the Jocassee breach analysis. A timely submission to FERC is needed because their review supports Duke Energy's ability to meet NRC's expectations for completion of site modifications related to mitigation of a postulated upstream dam failure by 2016. contain Security Sensitive information - Withhold from public disclosure under 10 CFR 2.390(d)

Upon removal of the Enclosure, this letter is uncontrolled. 10 O-(

Duke Energy Response to RAI Regarding Flood HRR May 15, 2014 Page 2 This letter does not create nor revise any Regulatory Commitments.

Enclosure 1 contains Security Sensitive information and is requested to be withheld from public disclosure in accordance with 10 CFR 2.390(d).

Should you have any questions regarding this submittal or require additional information, please contact David Haile of the ONS Regulatory Affairs Group, at (864) 873-4742.

Sincerely, Scott L. Batson Vice President Oconee Nuclear Station Enclosure

1. Validation of HRR Breach Hydrograph for Jocassee Dam by Joseph L. Ehasz, P.E. and Dr.

David S., Bowles, P.E., dated April 2014. contain Security Sensitive information - Withhold from public disclosure under 10 CFR 2.390(d)

Upon removal of the Enclosure, this letter is uncontrolled.

Duke Energy Response to RAI Regarding Flood HRR May 15, 2014 Page 3 cc:

Mr. Victor McCree, Regional Administrator U.S. Nuclear Regulatory Commission - Region II Marquis One Tower 245 Peachtree Center Ave., NE Suite 1200 Atlanta, Georgia 30303-1257 Mr. Eric Leeds, Director, Office of Nuclear Reactor Regulation U.S, Nuclear Regulatory Commission One White Flint North, Mailstop 13-H16M 11555 Rockville Pike Rockville, MD 20852-2738 Mr. James R. Hall, Project Manager (ONS)

(by electronic mail only)

U.S. Nuclear Regulatory Commission 11555 Rockville Pike Mail Stop O-8B1 Rockville, MD Mr. Eddy Crowe NRC Senior Resident Inspector Oconee Nuclear Station cc: without enclosure Mr. William H. Allerton, Director Division of Dam Safety and Inspections (D2SI),

OEP Federal Energy Regulatory Commission 888 First Street, N.E., Room 6N-01 Washington, D. C. 20426 Mr David Capka, Deputy Director Division of Dam Safety and Inspections (D2SI),

OEP Federal Energy Regulatory Commission 888 First Street, N.E., Room 6N-01 Washington, D. C. 20426 Mr. Wayne B. King, P.E.

Regional Engineer Federal Energy Regulatory Commission Division of Dam Safety and Inspections - Atlanta Regional Office 3700 Crestwood Parkway, NW, Suite 950 Duluth, Georgia 30096

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