ML20154L460

Forwards Proprietary WCAP-11066, Prairie Island Unit 1 Reactor Vessel Upper Internals Replacement Safety Evaluation, Per 850307 Commitment.Rept Withheld (Ref 10CFR2.790)

ML20154L460
Person / Time
Site:	Prairie Island
Issue date:	03/04/1986
From:	Musolf D NORTHERN STATES POWER CO.
To:	Office of Nuclear Reactor Regulation
Shared Package
ML19276D293	List: ML20154L460 ML20154L477
References
NUDOCS 8603110483
Download: ML20154L460 (2)

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Northern States Power Company 414 Nicollet Mall Minneapohs Minnesota 55401 Telephone (612) 330 5500 March 4, 1986 Director Office of Nuclear Reactor Regulation U S Nuclear Regulatory Commission Washington, DC 20555 PRAIRIE ISLAND NUCLEAR GENERATING PIANT Docket Nos. 50-282 License Nos. DPR-42 50-306 DPR-60 Unit 1 Reactor Vessel Upper Internals Replacement Safety Evaluation (Proprietary)

On March 7,1985 Northern States Power and Westinghouse met with the NRC Staff to discurs the proposed replacement of the Prairie Island reactor vessel upper internals. During that meeting NSP committed to provide the NRC Staff with informational copies of two safety evaluation reports, one addressing the new upper internals design, and the second related to the handling and storage of the old upper internals.

The purpose of this letter is to provide the proprietary version of the reactor vessel upper internals safety evaluation dealing with the new upper internals design for the information of the NRC Staff. The non-proprietary version of this safety evaluation and the safety evaluation dealing with the handling and storage of the old upper internals will submitted separately.

Enclosed are ten copies of WCAP-11066, " Prairie Island Unit 1 Reactor Vessel Upper Internals Replacement Safety Evaluation" (Proprietary). Also enclosed is Westinghouse authorization letter CAW-86-020 and accompanying affidavits.

This report contains information proprietary to Westinghouse Electric Corporation as supported by the affidavit signed by Westinghouse, owner of the information. The affidavit sets forth the basis on which the information may be withheld from public disclosure by the Commission and addresses with specificity the considerations listed in paragraph (b)(4) of Section 2.790 of the Commissions regulations.

CONTAINS PROPRIETARY INFORMATION TO BE WITilllELD FROM PUBLIC DISCLOSURE IN ACCORDANCE WITil 10 CFR SECTION 2. 790 ff{

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Dir NRR Northern States Power Company March 4, 1986 page 2 Accordingly, it is respectfully requested that the information which is proprietary to Westinghouse be withheld from public disclosure in accordance with 10 CFR Section 2.790 of the Commission's regulations.

Correspondence with tespect to the proprietary aspects of the Application for Withholding or the supporting Westinghouse affidavit should reference Westinghouse letter CAW-86-020 and should be addressed to R. A. Wiesemann, Manager, Regulatory and Legislative Affairs, Westinghouse Electric Corporation,.P.O. Box 355, Pittsburgh, Pennsylvania 15230 3 O- .

David Musolf Manager - Nuclear Support 'ervices DMM/EFE/efe c: Regional Administrator-III, NRC (w/o attachments)

NRR Proj ect Manager, NRC (w/o attachments)

Resident Inspector, NRC (w/o attachments)

G Charnoff (w/o attachments)

Attachments CONTAINS PROPRIETARY INFORMATION TO BE WITilllELD FROM PUBLIC DISCLOSURE IN ACCORDANCE WITil 10 CFR SECTION 2.790