ML031820626
| ML031820626 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 06/23/2003 |
| From: | Rosalyn Jones Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML031820626 (2) | |
Text
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A Duke Energy Company R. A. JONES Vice President Duke Power 29672 / Oconee Nuclear Site 7800 Rochester Highway Seneca, SC 29672 864 885 3158 864 885 3564 fax June 23, 2003 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001
Subject:
Duke Power Company, Oconee Nuclear Station, Unit 3 Docket No. 50-287 Steam Generator Inservice Inspection Steam Generator Tube Plugging and Repair 30-day Report As required by Technical Specification 5.6.8, a, this letter provides the number of tubes plugged or repaired during the Steam Generator (SG) Tube Inservice Inspection for the Unit 3 Cycle 20 refueling outage. One hundred percent (100%) of the unplugged Unit 3 SG Tubes were inspected with bobbin coil eddy current testing (ECT) probes and tubes with Indications were subsequently inspected with Motorized Rotating Pancake Coil (MRPC) probes.
There were no tubes repaired by sleeving in either steam generator. Some tubes were repaired by rerolling in the upper tube sheet of steam generators A and B. The tables below provide the number of tubes removed from service by plugging and the number of tubes repaired by rerolling in the upper tubesheet.
B Steam Generator A
B No. of Tubes Plunaed 396 for Eddy Current indications 19 to capture non-stabilized plugged tube locations 194 for Eddy Current indications 9 to capture non-stabilized plugged tube location No. of Tubes Rerolled
- 22
- 28
- 19 of these remain In service, 3 were plugged.
- 27 of these remain in service, 1 was plugged.
A www. duke-energy. corn
US Nuclear Regulatory Commission June 23, 2003 Please address any questions to Robert C. Douglas at (864) 8853073.
Very
- uours, R.
Sie Vice President, Oconee Nuclear Station cc:
Mr. L. A. Reye Regional Administrator, Region 11 Mr. M. C. Shannon Senior Resident Inspector Mr. L. N. Oshan ONRR, Project Manager Page 2