ML20044G919

Informs That Util 930419 Request for Approval of Proposed Repair of Weld (02-F2B) in Recirculation Piping Sys Acceptable

ML20044G919
Person / Time
Site:	Quad Cities
Issue date:	05/24/1993
From:	Chandu Patel Office of Nuclear Reactor Regulation
To:	Farrar D COMMONWEALTH EDISON CO.
References
GL-88-01, GL-88-1, TAC-M86334, NUDOCS 9306070035
Download: ML20044G919 (3)

Text

.May 24, 1993 Docket No. 50-265 DISTRIBUTION:

c Docket? File 4 NRC & Local PDRs PDIII-2 r/f Mr. D. L. Farrar J. Roe J. Zwolinski Manager, Nuclear Regulatory Services J. Dyer C. Moore Commonwealth Edison Company C. Patel OGC Executive. Towers West III, Suite 500 ACRS (10)

B. Clayton RIII 1400 OPUS Place Downers Grove, Illinois 60515

SUBJECT:

SAFETY EVALUATION OF WELD OVERLAY REPAIR OF A TWO-INCH LINE IN RECIRCULATION SYSTEM (TAC NO. M86334)

By the letter dated April 19, 1993, as supplemented April 30, 1993, Commonwealth Edison Company (CECO) requested approval of its proposed repair of a weld (02-F28) in the recirculation piping system at Quad Cities Station, Unit 2.

The proposed repair is based on the guidance in Generic Letter 88-01, "NRC Position on Intergranular Stress Corrosion Cracking (IGSCC) in BWR Austenitic Stainless Steel Piping."

Based on our review of your request, we have concluded that the proposed repair is acceptable for one cycle of operation. After that period, you should either replace the subject weld or perform a Code repair during the next refueling outage. Our detailed safety evaluation will be provided under separate cover.

Sincerely, OriginalSigned By:

Chandu P. Patel, Project Manager Project Directorate III-2 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regulation cc:

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i Docket No. 50-265 DISTRIBUTION:

Docket File-NRC & Local PDRs PDIII-2 r/f Mr. D. L. Farrar.

J.. Roe J..Zwolinski Manager, Nuclear Regulatory Services J. Dyer C. Moore 1

Commonwealth Edison Company C. Patel

'0GC Executive Towers West III, Suite 500.

ACRS-(10)

8. Clayton RIII i

1400 OPUS P1 ace i

Downers' Grove, Illinois 60515

SUBJECT:

SAFETY EVALUATION OF WELD OVERLAY REPAIR OF A TWO-INCH-LINE IN-1 RECIRCULATION SYSTEM (TAC NO. M86334)_

By the letter dated April 19, 1993,. as supplemented' April 30, 1993, Commonwealth' Edison Company (CECO) requested approval of its proposed repair of a weld (02-F2B) in the recirculation piping system at Quad Cities Station,-

Unit 2.

The proposed repair..is basedLon the guidance in Generic Letter 88-01, "NRC Position on Intergranular Stress Corrosion. Cracking (IGSCC) in BWR Austenitic Stainless Steel Piping."

Based on o'ur. review of your request, we have concluded that the' proposed repair is acceptable for one cycle of operation. After that period, you should either. replace the subject ~ weld or perform a Code repair during.the next refueling. outage.

Our detailed safety evaluation.willl be provided under separate cover.

Sincerely, Origirt Qd By:

Chandu P. Patel, Project Manager Project Directorate III-2 Division of Reactor Projects - III/IV/V Office of Nuclear Reactor Regul.ation cc: See next page An 0FC

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NAME lCM00RE lCPATEL lJDYER lJStros/lider l

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i Mr. D. L. Farrar Quad Cities Nuclear Power Station 4

' Commonwealth Edison Company

-Unit Nos. I and 2 cc:

Mr. Stephen E. Shelton l

Vice President Iowa-Illinois Gas and Electric Company i

P. O. Box 4350 Davenport, Iowa 52808 Michael I. Miller, Esquire Sidley and Austin.

i One First National Plaza Chicago, Illinois 60690 Mr. Richard Bax Station Manager Quad Cities Nuclear Power Station 22710 206th Avenue North l

Cordova, Illinois 61242 Resident Inspector U. S. Nuclear Regulatory Commission 22712 206th Avenue North Cordova, Illinois 61242 Chairman Rock Island County Board of Supervisors 1504 3rd Avenue Rock Island County Office Bldg.

Rock Island, Illinois 61201 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 Robert Neumann Office of Public Counsel State of Illinois Center 100 W. Randolph Suite 11-300 Chicago, Illinois 60601

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