ML12129A186
| ML12129A186 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/15/2012 |
| From: | Marilyn Evans Division of Operating Reactor Licensing |
| To: | Gillespie P Duke Energy Carolinas |
| Boska J | |
| References | |
| TAC ME7970, TAC ME7971, TAC ME7972, FOIA/PA-2012-0325 | |
| Download: ML12129A186 (3) | |
Text
OFFICIAL USE ONLY - SECURITY-RELATED INFORMATION OFFICIAL USE ONLY - SECURITY-RELATED INFORMATION May 15, 2012 Mr. Preston Gillespie Site Vice President Oconee Nuclear Station Duke Energy Carolinas, LLC 7800 Rochester Highway Seneca, SC 29672
SUBJECT:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 - REQUEST FOR ADDITIONAL INFORMATION REGARDING MODIFICATIONS TO ADDRESS EXTERNAL FLOODING CONCERNS (TAC NOS. ME7970, ME7971, AND ME7972)
Dear Mr. Gillespie:
By letter dated June 22, 2010, the U.S. Nuclear Regulatory Commission (NRC) issued a confirmatory action letter (CAL) to Duke Energy Carolinas, LLC (Duke, the licensee), associated with the mitigation of external flooding hazards at the Oconee Nuclear Station, Units 1, 2, and 3 (ONS) site, resulting from a postulated failure of the Jocassee Dam. By letter dated August 18, 2011, the NRC requested additional information on your responses to the CAL.
By letter dated October 17, 2011, you provided the requested information to the NRC. The NRC has reviewed the information provided, and found that additional information is necessary for the NRC to determine if the commitments in the CAL will be met. Please provide the following information associated with your modifications:
- 1. Your letter stated that the mitigative features that Duke plans to implement at the ONS site will be designed, procured, constructed and operated in accordance with the applicable regulatory and industry standards, as appropriate. Provide further information identifying the specific codes and standards that will be used in the design of the new flood walls.
- 2. Provide the seismic criteria for the flood walls contained in these codes and standards. If there are no seismic criteria, provide an estimate of the peak ground acceleration that the flood walls could withstand and remain functional.
Please provide a response to the above items within 30 days from the date of this letter.
OFFICIAL USE ONLY - SECURITY-RELATED INFORMATION P. Gillespie OFFICIAL USE ONLY - SECURITY-RELATED INFORMATION If you have any questions, please call John Boska at 301-415-2901.
Sincerely,
/RA/
Michele G. Evans, Director Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
ML12129A186 OFFICE LPL2-1/PM LPL2-1/LA LPL2-1/BC DE/EMCB/BC DE/D DORL/D NAME JBoska SFigueroa NSalgado MMurphy PHiland MEvans DATE 05/10/12 05/09/12 05/10/12 05/10/12 05/10/12 05/15/12