ML20203P776

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Informs That Following Completion of Eddy Current insp,25 Tubes on Steam Generators a & B Removed from Svc by Plugging,Per Tech Spec 4.19.5a.No Tube Repaired by Kinetic Expansion Process
ML20203P776
Person / Time
Site: Crane 
Issue date: 05/02/1986
From: Hukill H
GENERAL PUBLIC UTILITIES CORP.
To: Stolz J
Office of Nuclear Reactor Regulation
References
5211-86-2085, NUDOCS 8605080139
Download: ML20203P776 (1)


Text

GPU Nuclear Corporation NMCIMr Post Office Box 480 Route 441 South Middletown, Pennsylvania 17057 0191 717 944 7621 TELEX 84 2386 Writer's Direct Dial Number:

May 2, 1986 52T1-86-2085 Office of Nuclear Reactor Regulation Attn: Mr. J. F. Stolz, Director PWR Projects Directorate No. 6 U.S. Nuclear Regulatory Commission Washington, DC 20555

Dear Mr. Stolz:

Three Mile Island Nuclear Station Unit 1 (TMI-1)

Operating License Ho. DPR-50 Docket No. 50-289 Post Eddy Current Inspection Report Following the completion of the Eddy Current Inspection of TMI-l A and B steam generator tubes, Technical Inspection 4.19.5a requires a report to be submitted of the number of tubes repaired or removed from service.

During the SM eddy current outage, no tubes were repaired by the kinetic expansion process in either steam generator.

A total of 25 tubes were removed from service by plugging; 10 tubes in Steam Generator A and 15 tubes in Steam Generator B.

Of these, 5 tubes in Steam Generator A and 9 tubes in Steam Generator B had indications exceeding the repair limits of Technical Specification 4.19.4.a.6.

The remaining tubes were plugged for conservatism based on engineering judgement. Tube plugging was completed on April 18, 1986 A total cf 1227 tubes have been removed from service since fabrication in Steam Generator A.

In Steam Generator B, a total of 340 tubes have been removed from service.

This letter fulfills the requirement of Technical Specification 4.19.5a.

Si ncerely, 8605080139 860502 PDR ADOCK 05000289

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J. Thoma GPU Nuclear Corporation is a subsidiary of the General Public Utilities Corporation u

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