ML20064H419

Replacement P 2 of 821220 Proposed Findings of Fact & Conclusions of Law in Form of Proposed Initial Decision. Svc List Encl

ML20064H419
Person / Time
Site:	Point Beach
Issue date:	01/10/1983
From:	WISCONSIN ELECTRIC POWER CO.
To:
Shared Package
ML20064H418	List: ML20064H414 ML20064H419
References
NUDOCS 8301170251
Download: ML20064H419 (2)

Text

would permit repair of such tubes 5.3 " sleeving," leaving the tubes in service. The sleeving procedure has been previously utilized at the R. E. Ginna nuclear plant and, on a large scale, at San Onofre Unit 1.

3. There are two steam generators at each of the Point Beach units. Each steam generator contains 3260 inverted, U-shaped vertical tubes. The ends of the tubes pass through and are anchored in the tubesheet. The tubesheet is a large circular steel plate, about 22 inches thick, through which holes are drilled for the tubes. The bottom 2 1/2 to 3 inches of the end of each tube is fastened within the bottom of the tubesheet by " rolling," i.e., the tube is mechanically expanded tightly against the walls of the tubesheet hole. The tubes are also welded at the bottom face of the tubesheet. The tubes are not fastened at the top of the tubesheet. Affidavit of David K.

Porter (September 28, 1981) at 54 (Attachment 1 to " Licensee's Motion For Authorization For Interim Operation of Unit 1 With Steam Generator Tubes Sleeved Rather Than Plugged," dated September 28, 1981) (hereinaf ter "Af fidavit of Porter") .

4. The sleeving process involves the insertion of a smaller diameter, thermally treated Inconel 600 metal sleeve inside a steam generator tube so that the bottom of the sleeve is flush with the bottom of the tube. The sleeve extends beyond the top of the tubesheet, and bridges the degraded portion of the tube. The sleeve is bonded to the tube at the bottom and just below the top of the sleeve (so as to provide a l

short length of free sleeve above the upper bond inside the 4

tube). Affidavit of Porter, at 95; Licensee Exhibit 1, S 3.2.

B301170251 830110

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0 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION Before the Atomic Safety and Licensing Board In the Matter of )

)

WISCONSIN ELECTRIC POWER COf'PANY ) Docket Nos. 50-266

) 50-301 (Point Beach Nuclear Plant, ) (OL Amendment)

Units 1 and 2) )

SERVICE LIST Peter B. Bloch, Chairman Stuart A. Treby, Esq.

Atomic Safety and Licensing Office of the Executive Board Legal Director U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission Wasington, D.C. 20555 Washington, D.C. 20555 Dr. Hugh C. Paxton Richard G. Bachmann, Esq.

1229 - 41st Street Office of the Executive Los Alamos, New Mexico 87544 Legal Director U.S. Nuclear Regulatory Commission i Dr. Jerry R. Kline . Wasington, D.C. 20555 Atomic Safety and Licensing Board Kathleen M. Falk, Esq.

U.S. Nuclear Regulatory Commission Wisconsin's Environmental Decade Washington, D.C. 20555 114 North Carroll Street Suite 208 Atomic Safety and Licensing Madison, Wisconsin 53703 Board Panel U.S. Nuclear Regulatory Commission Francis X. Davis, Esq.

Washington, D.C. 20555 Monroeville Nuclear Center Westinghouse Electric Corporation Atomic Safety and Licensing P. O. Box 355 Appeal Board Panel Pittsburgh, PA 15230 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Barton Z. Cowan, Esq.

John R. Kenrick, Esq.

Docketing and Service Section Eckert, Seamans, Cherin & Mellott Office of the Secretary Forty-Second Floor U.S. Nuclear Regulatory Commission 600 Grant Street Washington, D.C. 20555 Pittsburgh, PA 15219 l