ML20216C923

Application for Amend to License NPF-2,allowing Reduction in Available Paths to Min of 50% w/3 Per Core Quadrant. Non-proprietary & Proprietary W Repts CAA-97-234 & CAA-97-235,encl.Proprietary Info,Withheld

ML20216C923
Person / Time
Site:	Farley
Issue date:	09/03/1997
From:	Woodard J SOUTHERN NUCLEAR OPERATING CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML19317C700	List: ML20216C923 ML20216C966 ML20216D003 ML20216D017
References
NUDOCS 9709090172
Download: ML20216C923 (2)

Text

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J D. Wonderd Southern N;cle:r Operating Company. inc.

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PO fb 1795 Dmnfwn. Alatiama 35701 tel205 932 $090 SOUTHERN COMPANY Energt to Serre Your Wbrid" Docket No.: 50 348 September 3, 1997 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATFN: Document Control Desk Washington, DC 20555 Joseph M. Farley NucIcar plant Unit I hirnnhle incore DetrcioLTrchoicGecincadonAnicadment Ladies and Gentlemen:

As a result of degradation of the Farley Unit I moveabic incore detector system, Southern Nuclear proposes a one time only change for Farley Unit 1 Cycle 15. Concerns have arisen that the number of available detector thimble kcations may drop below the 75% (38 thimbles) requirement of Technical Specification 3.3.3.2. The proposed change will allow a reduction in the available paths to a minimum of 50% (25 thimbles) with 3 per core quadrant. It is anticipated that repairs will be perfonned on the incore system such that this amendment will only be required until the next refueling. A similar amendment was approved for Prairic Island Nuclear Generating Plant, Unit 1, by letter dated October 10,1996.

Enclosure i provides a discussion of the proposed change. As denoted in 10 CFR 50.92(c), SNC has detennined the proposed changes to the Technical Specifications do not involve a significant har.ards consideration. The basis for this detennination is provided by the evaluation in Enclosure 2. Southern Nuclear has also detennined that the proposed changes will not signincantly affect the quality of the human environment. A copy of the proposed changes has been sent to Dr. D. E. Williamson, the Alabama State Designee, in accordance with 10 CFR 50.91 (b)(1). Enclosure 3 includes the proposed Technical Speci0 cations changes. Enclosure 4 contains Westinghouse Reports CAA 97-234 (proprietary),"Farley Unit 1 Cycle 15 Thimble Deletion Study; CAA 97 235 (non proprietary), a non-proprietary version of the same report; and supporting Amdavit CAW-971160.

The proprietary information for which withholding is being requested in the above-referenced report is further identified in Affidavit CAW 97 Il60 signed by the owner of the proprietary information, Westinghouse Electric Corporation. The affidavit, which is included in Enclosure 4, sets forth the basis on which the infonnation may be withheld from public disclosure by the Conunission and addresses with specificity the considerations listed in paragraph (b)(4) of 10 CFR Section 2.790 of the 1

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U. S. Nuclear Regulatory Commission Page 2 Conunission's regulations. Correspondence with respect to the proprietary aspects of the application for withholding or the Westinghouse amdavit should reference letter CAW.97 1160 and should be addressed to N. J. Liparuto, hianager, Equipment Design and Regulatory Engineering, Westinghouse Electric Corporation.

It is requested that review and approval of this license amendment request be expedited in view of the recent history regarding availability of detector thimbles during Unit 1 Cyle 15 and the need for the use of the moveable incore detector system for Technical Specification required monitoring / calibration functions in the near future. nis will avoid the potential for unnecessary transients associated with a unit shutdown for non safety rcasons, if you have any questions, please advise.

Respectfully submitted, SOUTilERN NUCLEAR OPERATING COMPANY

\ .kg D'. Voodard Sworn to and subscribed before me th's bday of 1997

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Enclosures:

1. Discussion of Proposed Change 2, Significant llazards Evaluation

3. Revised Technical Specification Pages

4. Westinghouse Documentation cc: hir L A. Reyes, Region 11 Administrator hir. J.1. Zimmerman, NRR Project hianager hir T. hl. Ross, Plant Sr. Resident inspector Dr. D. E. Williamson, State Department of Public Ilealth

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