ML032230154

Summary of the Staff'S Review of the Steam Generator Tube Preservice Inspection Report from June 2001

ML032230154
Person / Time
Site:	Kewaunee
Issue date:	08/15/2003
From:	John Lamb NRC/NRR/DLPM/LPD3
To:	Coutu T Nuclear Management Co
References
TAC MB6941
Download: ML032230154 (4)

Text

August 15, 2003 Mr. Thomas Coutu Site Vice President Kewaunee Nuclear Power Plant Nuclear Management Company, LLC N490 State Highway 42 Kewaunee, WI 54216

SUBJECT:

KEWAUNEE NUCLEAR POWER PLANT -

SUMMARY

OF THE STAFFS REVIEW OF THE STEAM GENERATOR TUBE PRESERVICE INSPECTION REPORT FROM JUNE 2001 (TAC NO. MB6941)

Dear Mr. Coutu:

By letter dated February 22, 2002, the Nuclear Management Company, LLC (NMC or the licensee), submitted the results of its preservice inspection for the replacement steam generators (SGs) performed in June 2001, for the Kewaunee Nuclear Power Plant (KNPP).

The February 22, 2002, letter, is contained in ADAMS under Accession Nos. ML020720547 and ML020720559. The report was submitted in accordance with American Society of Mechanical Engineers Code Section XI.

KNPP has two SGs which are designated A and B. Both of the SGs received a preservice inspection in June 2001. SG A and B are Westinghouse Model 54F. This SG model consists of 3,592 total tubes. The tubes have been hydraulically expanded into the tubesheet and the stainless steel type 405 tube support plates contain broached quatrefoil holes. SGs A and B began operation in 2001, and have thermally-treated Inconel 690 tubing.

The SG tube preservice inspection summary stated that the licensee inspected 100 percent of the tubes in SGs A and B full length (tube end cold to tube end hot) using a bobbin probe. In addition, ambiguous signals were further inspected with a +Point' probe. Ambiguous signals included Bulge, Bending Machine Geometry, Ding, Free - Span Differential, and Manufacturing Burnish Marks. The licensee reported that no tubes were preventively plugged and no degradation was found to be associated with the ambiguous signals.

Based on the U. S. Nuclear Regulatory Commission staffs review of the information provided by the licensee, the staff concludes that the licensee provided the required information and that at this time no additional information is required.

T. Coutu If there are any comments or questions concerning this letter, please contact me at (301) 415-1446.

Sincerely,

/RA/

John G. Lamb, Project Manager, Section 1 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-305 cc: See next page

T. Coutu If there are any comments or questions concerning this letter, please contact me at (301) 415-1446.

Sincerely,

/RA/

John G. Lamb, Project Manager, Section 1 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-305 cc: See next page Distribution:

PUBLIC PD 3-1 r/f ACRS OGC PLouden, RIII LRaghavan JLamb THarris ADAMS ACCESSION NO. ML032230154 *See memo 08/04/03 OFFICE PDIII-1/PM PDIII-1/LA EMCB/SC PDIII-1/SC NAME JLamb THarris ALund* LRaghavan DATE 08/13/03 08/13/03 08/04/03 08/14/03 OFFICIAL RECORD COPY

Kewaunee Nuclear Power Plant cc:

John Paul Cowan Jonathan Rogoff, Esquire Executive Vice President & General Counsel, Chief Nuclear Officer Nuclear Management Company, LLC Nuclear Management Company, LLC 700 First Street 700 First Street Hudson, WI 54016 Hudson, MI 54016 Larry L. Weyers Kyle Hoops Chairman, President and CEO Plant Manager Wisconsin Public Service Corporation Kewaunee Nuclear Power Plant 600 North Adams Street N490 Highway 42 Greey Bay, WI 54307-9002 Kewaunee, WI 54216-9511 David Zellner Gordon P. Arent Chairman - Town of Carlton Manager, Regulatory Affairs N2164 County B Kewaunee Nuclear Power Plant Kewaunee, WI 54216 N490 Highway 42 Kewaunee, WI 54216-9511 Sarah Jenkins Electric Division David Molzahn Public Service Commission of Wisconsin Nuclear Asset Manager PO Box 7854 Wisconsin Public Service Corporation Madison, WI 53707-7854 600 N. Adams Street Green Bay, WI 54307-9002 Thomas Webb Nuclear Asset Manager Wisconsin Public Service Corporation 600 N. Adams Street Green Bay, WI 54307-9002 Resident Inspectors Office U. S. Nuclear Regulatory Commission N490 Hwy 42 Kewaunee, WI 54216-9510 Regional Administrator Region III U. S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60532-4351

T. Coutu