ML022040692
| ML022040692 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/21/2002 |
| From: | Mccollum W Duke Energy Corp |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML022040692 (2) | |
Text
k Duke Energy° W R. McCollum, Jr.
Vice President Duke Energy Oconee Nuclear Station 7800 Rochester Highway Seneca, SC 29672 (864) 885-3107 OFFICE (864) 885-3564 FAx May 21, 2002 U. S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001
Subject:
Oconee Nuclear Station, Unit 1 Docket No. 50-269 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 1 Cycle 20 refueling outage. One hundred percent (100%) of the Unit 1 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. No tubes were repaired by reroll in the lower tubesheet. The tables below identify the number of tubes removed from service by plugging and the number of tubes repaired by rerolling in the upper tubesheet.
B Steam Generator Number of Tubes Plucacied 75 - for ECT indications 47 - to capture non-stabilized plugged tube indications 107 - for ECT indications 174 - to capture non-stabilized plugged tube indications Number of Tubes Rerolled A
B 41 206 (200 of these remain in service, 6 were plugged).
If there are any questions you may contact R. C. Douglas at (864) 885-3073.
Very Truly Yours, McýT Collum, Jr.
Site Vice President'r
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USNRC Document Control Desk Page 2 May 21, 2002 cc:
Mr. L. A. Reyes Regional Administrator, Region II Mr. M. C. Shannon Senior Resident Inspector Mr. L. N, Olshan ONRR, Senior Project Manager Mr. V. R. Autry DHEC