ML031990337
| ML031990337 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 07/17/2003 |
| From: | Olshan L NRC/NRR/DLPM/LPD2 |
| To: | Rosalyn Jones Duke Energy Corp |
| Olshan L N, NRR/DLPM, 415-1419 | |
| References | |
| TAC MB6414 | |
| Download: ML031990337 (4) | |
Text
July 17, 2003 Mr. Ronald A. Jones Vice President, Oconee Site Duke Energy Corporation 7800 Rochester Highway Seneca, SC 29672
SUBJECT:
OCONEE NUCLEAR STATION, UNIT 3 RE: REVIEW OF END OF CYCLE 19 STEAM GENERATOR INSPECTION REPORT (TAC NO. MB6414)
By letters dated December 6, 2001, (ADAMS accession number ML020170422),
December 20, 2001, (ML020240179), and March 4, 2002, (ML020720661), you submitted reports summarizing the steam generator tube inspections that were performed in November 2001 during the end-of-cycle 19 refueling outage for Oconee, Unit 3.
Our review of these submittals is enclosed. As discussed in the enclosure, we did not identify any issues that warranted additional follow-up at this time. The enclosed evaluation completes our review of the submittals and our efforts under the subject TAC.
Sincerely,
/RA/
Leonard N. Olshan, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-287
Enclosure:
As stated cc w/encl: See next page
July 17, 2003 Mr. Ronald A. Jones Vice President, Oconee Site Duke Energy Corporation 7800 Rochester Highway Seneca, SC 29672
SUBJECT:
OCONEE NUCLEAR STATION, UNIT 3 RE: REVIEW OF END OF CYCLE 19 STEAM GENERATOR INSPECTION REPORT (TAC NO. MB6414)
By letters dated December 6, 2001, (ADAMS accession number ML020170422),
December 20, 2001, (ML020240179), and March 4, 2002, (ML020720661), you submitted reports summarizing the steam generator tube inspections that were performed in November 2001 during the end-of-cycle 19 refueling outage for Oconee, Unit 3.
Our review of these submittals is enclosed. As discussed in the enclosure, we did not identify any issues that warranted additional follow-up at this time. The enclosed evaluation completes our review of the submittals and our efforts under the subject TAC.
Sincerely,
/RA/
Leonard N. Olshan, Project Manager, Section 1 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-287
Enclosure:
As stated cc w/encl: See next page DISTRIBUTION:
PUBLIC PDII-1 R/F JNakoski CHawes LOlshan OGC ACRS RHaag, RII ADAMS ACCESSION NO. ML031990337 NAME PDII-1/LA PDII-1/PM PDII-1/SC OFFICE CHawes LOlshan JNakoski DATE 7/17/03 7/17/03 7/17/03 OFFICIAL RECORD COPY
ENCLOSURE EVALUATION OF OCONEE 3 END OF CYCLE 19 STEAM GENERATOR INSPECTION RESULTS By letters dated December 6, 2001, (ADAMS accession number ML020170422),
December 20, 2001, (ML020240179), and March 4, 2002, (ML020720661) Duke Energy, the licensee for Oconee Nuclear Station, Unit 3, submitted reports summarizing the steam generator tube inspections performed in November 2001 during the end-of-cycle 19 (EOC 19) refueling outage. In addition, licensee staff and NRC staff participated in conference calls during the steam generator inspection activities (ML020840670).
Oconee Unit 3 has two Babcock and Wilcox designed once-through steam generators. Each steam generator contains approximately 15,500 mill-annealed Alloy 600 tubes. The tubes have an outside diameter of 5/8-inch, a nominal wall thickness of 0.037-inch, and are supported by fifteen tube support plates along with upper and lower tubesheets. The tube support plates have trefoil-shaped broached holes, except for the outer rows of the 15th support plate that contain drilled holes. The Oconee, Unit 3 steam generators are scheduled for replacement during the Fall 2004 refueling outage.
During the EOC 19 refueling outage, the licensee performed tube inspections in both steam generators. The scope and results of the inspection are discussed in the material provided by the licensee. The licensee plugged 227 tubes in Steam Generator A and 129 tubes in Steam Generator B. A total of 110 tubes were plugged to surround existing plugged periphery tubes in response to the findings at Three Mile Island, discussed in NRC Information Notice IN 2002-02, Recent Experience With Plugged Steam Generator Tubes. The other tube plugging resulted from eddy current indications.
Based on the NRC staffs review of the information provided by the licensee and subsequent discussions with the licensee during the May 2003 steam generator inspections that occurred during the end-of-cycle 20 refueling outage (for the summary of the discussions, see ML031810657), the NRC staff concludes that the information required to be submitted by the technical specifications was provided and that no additional follow-up on the EOC 19 inspections is required at this time.
Oconee Nuclear Station cc:
Ms. Lisa F. Vaughn Legal Department (ECIIX)
Duke Energy Corporation 422 South Church Street Charlotte, North Carolina 28201-1006 Anne W. Cottingham, Esquire Winston and Strawn 1400 L Street, NW Washington, DC 20005 Manager, LIS NUS Corporation 2650 McCormick Drive, 3rd Floor Clearwater, Florida 34619-1035 Senior Resident Inspector U. S. Nuclear Regulatory Commission 7812B Rochester Highway Seneca, South Carolina 29672 Mr. Henry Porter, Director Division of Radioactive Waste Management Bureau of Land and Waste Management Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201-1708 Mr. Michael A. Schoppman Framatome ANP 1911 North Ft. Myer Drive Suite 705 Rosslyn, VA 22209 Mr. L. E. Nicholson Compliance Manager Duke Energy Corporation Oconee Nuclear Site 7800 Rochester Highway Seneca, South Carolina 29672 Ms. Karen E. Long Assistant Attorney General North Carolina Department of Justice P. O. Box 629 Raleigh, North Carolina 27602 Mr. C. Jeffrey Thomas Manager - Nuclear Regulatory Licensing Duke Energy Corporation 526 South Church Street Charlotte, North Carolina 28201-1006 Mr. Richard M. Fry, Director Division of Radiation Protection North Carolina Department of Environment, Health, and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 Mr. Peter R. Harden, IV VP-Customer Relations and Sales Westinghouse Electric Company 6000 Fairview Road 12th Floor Charlotte, North Carolina 28210