ML080930255
| ML080930255 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 04/07/2008 |
| From: | Olshan L NRC/NRR/ADRO/DORL/LPLII-1 |
| To: | |
| Olshan L N, NRR/DLPM, 415-1419 | |
| References | |
| TAC MD8244, TAC MD8245, TAC MD8246 | |
| Download: ML080930255 (4) | |
Text
April 7, 2008 LICENSEE:
DUKE POWER COMPANY LLC (DUKE)
FACILITY:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 (OCONEE)
SUBJECT:
SUMMARY
OF MARCH 27, 2008, MEETING TO DISCUSS THE STEAM GENERATOR WEAR ISSUE (TAC NOS. MD8244, MD8245, AND MD8246)
On March 27, 2008, the U.S. Nuclear Regulatory Commission (NRC) met with Duke (the licensee) to discuss the steam generator (SG) wear issue at Oconee. The slides presented by the licensee are available in the Agencywide Documents and Access Management System under accession number ML080880076. Enclosed is a list of the meeting attendees.
The licensee and Babcock & Wilcox Canada (B&W), the manufacturer of the Oconee SGs, have determined that the most probable cause of the tube wear is the tubes vibrating and impacting the tube support plates. The licensee and B&W have developed a conceptual repair that involves shifting several support plates to pin the tubes and reduce the amount of tube vibration. The plugging projection model indicates that the Oconee SGs can meet their design life without implementing this repair, although a number of tubes may have to be plugged. The licensee will decide by August 31, 2008, whether to pursue the repair or continue with inspection and tube plugging.
/RA/
Leonard N. Olshan, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
List of Attendees cc w/encl: See next page
April 7, 2008 LICENSEE:
DUKE POWER COMPANY LLC (DUKE)
FACILITY:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 (OCONEE)
SUBJECT:
SUMMARY
OF MARCH 27, 2008, MEETING TO DISCUSS THE STEAM GENERATOR WEAR ISSUE (TAC NOS. MD8244, MD8245, AND MD8246)
On March 27, 2008, the U.S. Nuclear Regulatory Commission (NRC) met with Duke (the licensee) to discuss the steam generator (SG) wear issue at Oconee. The slides presented by the licensee are available in the Agencywide Documents and Access Management System under accession number ML080880076. Enclosed is a list of the meeting attendees.
The licensee and Babcock & Wilcox Canada (B&W), the manufacturer of the Oconee SGs, have determined that the most probable cause of the tube wear is the tubes vibrating and impacting the tube support plates. The licensee and B&W have developed a conceptual repair that involves shifting several support plates to pin the tubes and reduce the amount of tube vibration. The plugging projection model indicates that the Oconee SGs can meet their design life without implementing this repair, although a number of tubes may have to be plugged. The licensee will decide by August 31, 2008, whether to pursue the repair or continue with inspection and tube plugging.
/RA/
Leonard N. Olshan, Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
List of Attendees cc w/encl: See next page Distribution:
PUBLIC J. Lubinski, NRR LPL2-1 R/F A. Hiser, NRR RidsNrrDorlLpl2-1 (MWong)
K. Karwoski, NRR RidsNrrPMLOlshan (hard copy)
E. Murphy, NRR RidsNrrLAMOBrien (hard copy)
M. Cox, EDO Rgn II RidsOgcRp RidsRgn2MailCenter (KWeaver)
RidsAcrsAncw&mMailCenter C. Tucci, NRR Accession Number: ML080930255 OFFICE NRR/LPL2-1/PM NRR/LPL2-1/LA NRR/LPL2-1/BC NAME LOlshan POBrien MWong DATE 04/03/08 04/03/08 04/07/08 OFFICIAL RECORD COPY
Enclosure MEETING ATTENDEES FROM MARCH 27, 2008, MEETING WITH DUKE POWER COMPANY LLC (DUKE)
TO DISCUSS THE STEAM GENERATOR TUBE WEAR ISSUE AT OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3 NRC DUKE J. Lubinski M. Robinson M. Wong D. Mayes A. Hiser P. Downing K. Karwoski S. Batson E. Murphy C. Curry L. Olshan BABCOCK & WILCOX CANADA R. Klarner D. Lee J. Albert
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