NL-14-0732, Request for Additional Information from the U.S. Army Corps of Engineers to Support Flood Hazard Reevaluation, Recommendation 2.1

Request for Additional Information from the U.S. Army Corps of Engineers to Support Flood Hazard Reevaluation, Recommendation 2.1

ML14127A178
Person / Time
Site:	Farley
Issue date:	05/06/2014
From:	Pierce C Southern Nuclear Operating Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NL-14-0732
Download: ML14127A178 (2)

Text

Charles R. Pierce Southern Nuclear Regulatory Affairs Director Operating Company, Inc.

40 Inverness Center Parkway Post Office Box 1295 Birmingham. AL 35201 Tel 205.992.7872 Fax 205.992.7601 May 6, 2014 Docket Nos.: 50-348 NL-14-0732 50-364 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington , D. C. 20555-0001 Joseph M. Farley Nuclear Plant- Units 1 and 2 Request for Additional Information from the U.S. Army Corps of Engineers To Support Flood Hazard Reevaluation, Recommendation 2.1

References:

1. NRC Letter, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 10 CFR 50.54(f) Regarding Recommendations 2.1, 2.3, and 9.3, of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident," dated March 12, 2012.

2. JLD-ISG-2013-01, "Guidance For Assessment of Flooding Hazards Due to Dam Failure," Interim Staff Guidance, Revision 0, July 29 , 2013 (ML13151A153)

3. Letter to NRC, "Joseph M. Farley Nuclear Plant- Units 1 and 2 Request to Obtain U. S. Army Corps of Engineers (USACE) Information Required to Provide Response to March 12, 2012 Request for Information ,

Recommendation 2.1," dated September 26, 2013.

Ladies and Gentlemen:

On March 12, 2012, the Nuclear Regulatory Commission (NRC) issued Reference 1 to all power reactor licensees and holders of construction permits in active or deferred status. Enclosure 1 of Reference 1 requested each addressee perform a Flood Hazard Reevaluation (FHR). To adequately provide that report in accordance with the guidance provided in Reference 2, Southern Nuclear Operating Company (SNC) requested that the NRC obtain specific information from the U.S. Army Corps of Engineers (USACE) and for that information to be provided to SNC.

On April 29, 2014 at the request of the NRC, representatives of SNC attended a meeting with members of the NRC staff and members of the USACE. As a result of that meeting, SNC desires the NRC also request of the USACE additional specific information regarding flow characteristics for the critical flow scenario(s) at the closest HEC-RAS cross section to river miles 46, 43.8 and 42. This assumes the Joseph M. Farley Nuclear Plant site is at river mile 43.8:

U.S. Nuclear Regulatory Commission NL-14-0732 Page2

• Flow hydrographs for the complete model run.

• Velocity hydrographs for the complete model run.

• Spatial coordinates and projection for each cross section.

• All cross section station and elevation points.

• Left and right bank stations.

• Manning's "n" values or roughness coefficients for the left overbank, channel and right overbank at each cross section.

It is requested that results of the information requested above be provided to SNC along with the information that the NRC is already planning to provide.

This letter contains no NRC regulatory commitments. If you have any questions, please contact John Giddens at 205.992.7924.

Respectfully submitted, e.tt t1P C.R. Pierce Regulatory Affairs Director CRP/JMG/RCW cc: Southern Nuclear Operating Company Mr. S. E. Kuczynski, Chairman, President & CEO Mr. D. G. Bast, Executive Vice President & Chief Nuclear Officer Ms. C. A. Gayheart, Vice President - Farley Mr. B. L. lvey, Vice President- Regulatory Affairs Mr. B. J. Adams, Vice President - Engineering Mr. D. R. Madison, Vice President - Fleet Operations RTYPE: CFA04.054 U. S. Nuclear Regulatory Commission Mr. V. M. McCree, Regional Administrator Mr. S. A. Williams, NRR Project Manager - Farley Mr. P. K. Niebaum, Senior Resident- Farley Alabama Department of Public Health Dr. D. E. Williamson, State Health Officer