ML13032A069

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Bellefonte, Units 1 & 2, Browns Ferry, Units 1, 2 & 3, Sequoyah, Units 1 & 2, Watts Bar, Unit 1 & 2, Response to March 12, 2012, Request for Information Enclosure 2, Recommendation 2.1, Flooding Required Response 1, Integrated Assessment a
ML13032A069
Person / Time
Site: Browns Ferry, Watts Bar, Sequoyah, Bellefonte  Tennessee Valley Authority icon.png
Issue date: 01/29/2013
From: James Shea
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML13032A069 (3)


Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 January 29, 2013 10 CFR 50.54(f)

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852 Bellefonte Nuclear Plant, Units 1 and 2 Construction Permit Nos. CPPR-122 and CPPR-123 NRC Docket Nos. 50-438 and 50-439 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296 Sequoyah Nuclear Plant, Units 1 and 2 Facility Operating License Nos. DPR-77 and DPR-79 NRC Docket Nos. 50-327 and 50-328 Watts Bar Nuclear Plant, Unit 1 Facility Operating License No. NPF-90 NRC Docket No. 50-390 Watts Bar Nuclear Plant, Unit 2 Construction Permit No. CPPR-92 NRC Docket No. 50-391

Subject:

Tennessee Valley Authority - Response to March 12, 2012, Request for Information Enclosure 2, Recommendation 2.1, Flooding, Required Response 1, Integrated Assessment Approach

References:

1. NRC Letter, "Request for Information Pursuant to Title 10 of the Code of Federal Regulations 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 (ML12073A348)

Printed on recycled paper

U.S. Nuclear Regulatory Commission Page 2 January 29, 2013

2. NRC Japan Lessons-Learned Project Directorate, JL.D-ISG-2012-05, "Guidance for Performing the Integrated Assessment for External Flooding," Interim Staff Guidance, Revision 0, dated November 30, 2012 (ML12311A214)
3. NRC Letter, "Trigger Conditions for Performing an Integrated Assessment and Due Date for Response," dated December 3, 2012 (ML12326A912)

On March 12, 2012, the NRC issued Reference 1 to request information associated with several recommendations from the NRC Near-Term Task Force (NTTF) including Recommendation 2.1 for Flooding. Required Response 1 in Enclosure 2 of Reference 1 directed licensees to submit an approach for developing an Integrated Assessment Report, including criteria for identifying vulnerabilities, within 60 days after issue of the NRC's guidance on the subject.

-On November 30, 2012, the NRC issued the Reference 2 Interim Staff Guidance. TVA will adopt the Reference 2 guidance as the approach for developing the NTTF 2.1 Flooding Integrated Assessment Report for TVA's operating sites at Browns Ferry Nuclear Plant, Units 1, 2, and 3, Sequoyah Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Unit 1, as well as for TVA's construction permit sites at Bellefonte Nuclear Plant, Units 1 and 2, and Watts Bar Nuclear Plant, Unit 2, if the reevaluated flooding hazard is not bounded by the current design basis flooding evaluation.

In addition, TVA will adopt the guidance provided by Reference 3 regarding the trigger conditions and scope of any required Integrated Assessment.

This letter does not contain any new commitments. If you have any questions regarding this submittal, please contact Kevin Casey at (423) 751-8523.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on the 29th day of January 2013.

Re ect ully,

.W.

ea icVPresident, Nuclear Licensing cc: See Page 3

U.S. Nuclear Regulatory Commission Page 3 January 29, 2012 cc:

NRR Director - NRC Headquarters NRO Director - NRC Headquarters NRC Regional Administrator - Region II NRR Project Manager - Bellefonte Nuclear Plant NRR Project Manager - Browns Ferry Nuclear Plant NRR Project Manager - Sequoyah Nuclear Plant NRR Project Manager - Watts Bar Nuclear Plant NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Senior Resident Inspector - Sequoyah Nuclear Plant NRC Senior Resident Inspector - Watts Bar Nuclear Plant E. Miller, NRC/NRR