ET 02-0019, Steam Generator Tube Plugging Report for Wolf Creek Generating Station

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Steam Generator Tube Plugging Report for Wolf Creek Generating Station
ML021220567
Person / Time
Site: Wolf Creek Wolf Creek Nuclear Operating Corporation icon.png
Issue date: 04/21/2002
From: Muench R
Wolf Creek
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
ET 02-0019
Download: ML021220567 (2)


Text

WLF CREEK

'NUCLEAR OPERATING CORPORATION Richard A. Muench Vice President Technical Services APR 2 1 2002 ET 02-0019 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: Steam Generator Tube Plugging Report Gentlemen:

This letter provides information regarding the number of tubes plugged in each steam generator, as required by Wolf Creek Generating Station Technical Specification 5.6.10, "Steam Generator Tube Inspection Report." Technical Specification 5.6.10 requires, in part, that the number of tubes plugged in each steam generator be reported to the Nuclear Regulatory Commission within 15 days following the completion of each inservice inspection of the steam generator tubes.

The inservice inspection of Steam Generators "B"and "C" was completed on April 8, 2002. The inspection resulted in the mechanical plugging of 6 tubes in Steam Generator "B"and 3 tubes in Steam Generator "C". One tube in Steam Generator "B"was administratively plugged due to a single circumferential anomaly. This indication was tested with an ultrasonic technique and was confirmed as not degraded. All the other tubes plugged in Steam Generators "B" and "C" were due to indication of anti-vibration bar wear found during the inservice inspection. Steam Generators "A" and "D" were not inspected during the inservice inspection.

P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831 An Equal Opportunity Employer M/F/HCNVET

ET 02-0019 Page 2 of 2 Including the tubes plugged during this inservice inspection, the total number of tubes plugged in each steam generator to date are as follows:

Steam Generator "A" 26*

Steam Generator "B" 28 Steam Generator "C" 19 Steam Generator "D" 80

  • An additional 3 plugs are installed in Steam Generator "A" cold leg only, due to tube sheet drilling mistakes during manufacturing. No tubes are installed in those locations.

There are no commitments associated with this submittal. If you have questions concerning this matter, please contact me at (620) 364-4034, or Mr. Tony Harris at (620) 364-4038.

Very truly yours, Q 1A Richard A. Muench RAM/pb cc: J. N. Donohew (NRC)

D. N. Graves (NRC)

E. W. Merschoff (NRC)

Senior Resident Inspector (NRC)