ML071140364
| ML071140364 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/15/2007 |
| From: | Mcginty T Plant Licensing Branch III-2 |
| To: | Brandi Hamilton Duke Power Co |
| Olshan L N, NRR/DORL, 415-1419 | |
| References | |
| TAC MD3721, TAC MD3722, TAC MD3723, TAC MD3724, TAC MD3725, TAC MD3726 | |
| Download: ML071140364 (4) | |
Text
May 15, 2007 Mr. Bruce H. Hamilton Vice President, Oconee Site Duke Power Company LLC 7800 Rochester Highway Seneca, SC 29672
SUBJECT:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 (OCONEE) - TORNADO AND HIGH-ENERGY LINE BREAK (HELB) MITIGATION STRATEGIES (TAC NOS. MD3721, MD3722, MD3723, MD3724, MD3725, AND MD3726)
Dear Mr. Hamilton:
By letter dated November 30, 2006, (available in the Agencywide Documents Access and Management System (ADAMS) under accession number ML070290328), you provided updated mitigation strategies and regulatory commitments for tornados and HELBs at Oconee. We met with you on March 5, 2007, (meeting summary available under ADAMS accession number ML070750126), and on March 20, 2007, (meeting summary available under ADAMS accession number ML070870150) to discuss your November 30, 2006, letter. On April 12, 2007, members of our staff visited the Oconee site to tour areas of concern with regard to the environmental conditions following an HELB.
As a result of our review of your letter, the discussions during the two meetings, and our site visit, we conclude that you have made significant progress in developing mitigating strategies that will resolve the tornado and HELB issues and result in formulating a new licensing basis.
As captured in the meeting summaries, it is our understanding that further information will be provided in the license amendment requests (LARs) that you will be submitting. However, your strategy to use inspections in lieu of providing certain protection modifications in the turbine building remains open pending further information. As a result of our March 20, 2007, meeting with you, we understand that you will be providing a description of the intended mitigation strategy for main streamline breaks and other HELBs that could result in a compromise of the main steam pressure boundary. The results of your Main Steam Isolation and Pressure Control Feasibility Study are needed to satisfactorily resolve this issue. We anticipate discussing your proposed resolution upon completion, currently expected in June 2007.
B. Hamilton Pending an acceptable resolution of the issue discussed above, and as a result of the extensive dialogue that we have had concerning your proposed modifications and mitigation strategies, we believe that the future LARs based on this approach could be found acceptable.
If you have any further questions, please call me at 301 415-1453.
Sincerely,
/RA/
Timothy J. McGinty, Deputy Director Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287 cc: See next page
B. Hamilton May 15, 2007 Pending an acceptable resolution of the issue discussed above, and as a result of the extensive dialogue that we have had concerning your proposed modifications and mitigation strategies, we believe that the future LARs based on this approach could be found acceptable.
If you have any further questions, please call me at 301 415-1453.
Sincerely,
/RA/
Timothy J. McGinty, Deputy Director Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287 cc: See next page Distribution:
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KOBrien, R III Accession Number: ML0711040364 OFFICE NRR/LPL2-1/PM NRR/ADES/DE NRR/ADES/DSS RII CCasto NRR/LPL2-1/BC NRR/DORL/DD NAME LOlshan:nc PHiland JWermiel E-mail EMarinos TMcGinty DATE 5/13 /07 5/14 /07 5/14 /07 5/14/07 5/14 /07 5/15/07 OFFICIAL RECORD COPY
Oconee Nuclear Station, Units 1, 2, and 3 cc:
Mr. Bruce H. Hamilton Vice President, Oconee Site Duke Power Company LLC 7800 Rochester Highway Seneca, SC 29672 Ms. Lisa F. Vaughn Associate General Counsel and Managing Attorney Duke Energy Carolinas, LLC 526 South Church Street - EC07H Charlotte, North Carolina 28202 Manager, LIS NUS Corporation 2650 McCormick Dr., 3rd Floor Clearwater, FL 34619-1035 Senior Resident Inspector U.S. Nuclear Regulatory Commission 7812B Rochester Highway Seneca, SC 29672 Mr. Henry Porter, Director Division of Radioactive Waste Management Bureau of Land and Waste Management Dept. of Health and Env. Control 2600 Bull St.
Columbia, SC 29201-1708 Mr. Michael A. Schoppman Framatome ANP 1911 North Ft. Myer Dr.
Suite 705 Rosslyn, VA 22209 Mr. B. G. Davenport Regulatory Compliance Manager Oconee Nuclear Site Duke Energy Corporation ON03RC 7800 Rochester Highway Seneca, SC 29672 Mr. Leonard G. Green Assistant Attorney General NC Department of Justice P.O. Box 629 Raleigh, NC 27602 Mr. R. L. Gill, Jr.
Manager - Nuclear Regulatory Issues and Industry Affairs Duke Power Company LLC 526 S. Church St.
Mail Stop EC05P Charlotte, NC 28202 Division of Radiation Protection NC Dept of Environment, Health, & Natural Resources 3825 Barrett Dr.
Raleigh, NC 27609-7721 Mr. Peter R. Harden, IV VP-Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, NC 28210 Mr. Henry Barron Group Vice President, Nuclear Generation and Chief Nuclear Officer P.O. Box 1006-EC07H Charlotte, NC 28201-1006 Mr. Charles Brinkman Director, Washington Operations Westinghouse Electric Company 12300 Twinbrook Parkway, Suite 330 Rockville, MD 20852 Ms. Kathryn B. Nolan Senior Counsel Duke Energy Carolinas, LLC 526 South Church Street - EC07H Charlotte, NC 28202