ML20059D427

Application for Amend to License NPF-8,revising Tech Specs to Allow Average of 15% Steam Generator Tube Plugging W/Peak Limit of 20% Tube Plugging in Any One Steam Generator.Encl Rept WCAP-12659 Provides Justification

ML20059D427
Person / Time
Site:	Farley
Issue date:	07/31/1990
From:	Hairston W ALABAMA POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20059D432	List: ML20059D427 ML20059D434 ML20059D437
References
NUDOCS 9009070036
Download: ML20059D427 (2)

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.. Alabirna Power Company

, q 40 inverness Cint:r Parkway '

Post Othce Box 1295 - ,

Dirrningham, Alabama 36201.

Telephone 205 8666581 l W. G. Hairston, til Senior Vice President Nuclear Operations Alabama Power-the southern ekttre system July 31, 1990 Docket No. 50-364 U. S. Nuclear Regulatory Commission i ATTN: Document Control Desk  !

Vashington, D. C. 20555 I J

Gentlemen:

Joseph M. Farley Nuclear Plant - Unit 2 I Steam Generator Tube Plugging Amendment I

.3 It is expected that the number of steam generator tubes in Unit 2 of Farley- l Nuclear Plant requiring corrective action may be in, excess of 10% of the '

total tubes, the current Technical Specification limit. Therefore,-Alabama Power Company has developed an amendment to the Unit 2 Technical -i Specifications which will allow an average of 15% steam generator tube plugging with a peak limit of'20% tube plugging in any one steam generator.

Included in the amendment is an approximate 1.5% reduction in: the reactor i coolant system thermal design flow.. This amendment is being requested for Unit 2 only in that the respective change for Unit i vill also-incorporate the RTD bypass elimination modification. This modification impacts the i thermal design flow portion of the amendment and will be incorporated ~in an  !

upcoming Unit 1 Technical Specification change.

l In support of the increased steam generator-tube plugging limit, all LOCA and non-LOCA analyses were reviewed. The Large Break LOCA, = Major Rupture t of a Main Feedvater Pipe, Uncontrolled Bank Vithdrawal from Suberitical, I Partial Loss of Forced Reactor Coolant Flow, Single Reactor. Coolant Pump i Locked Rotor, and Steam Generator Tube Rupture accidents were reanalyzed.

It should be noted that the-analysis.for the Large Break LOCA may be-affected by resolution of concerns about theLVestinghouse ECCS' evaluation r model power distribution assumption. This submittal vill-be updated,'if  ;

required, on resolution of the issue. Additionally,.the results of the i Steam Generator Tube Rupture analysis have' changed not only due'to the reduced thermal design flow and increased plugging limit, but also due to using current inputs for the Parley licensing basis methodology.

The proposed changed pages are provided in Attachment 1. The technical justification supporting the proposed changes is provided in Attachment 2 as VCAP-12659. '

Alabama Power Company has determined that the proposed changes do not involve a significant hazards consideration.- In accordance with 10CFR50.92 a significant hazards consideration evaluation is provided as Attachment 3.

' 9009070036 900731 PDR P ADOCK 05000364 Ok PDC / 0

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U.-S. Nuclo r R:gulatcry C:mmission Steam Cenerator Tube Plugging Amendment Page 2 Farley Nuclear Plant Unit 2 is presently scheduled to shut down for a refueling outage in October of this year. In order to be prepared for any steam generator tube plugging in excess of 10%, Alabama Power Company requests that the NRC review and approve this proposed change by <

November 1, 1990. i Alabama-Power Company's Plant Operations Review Committee has revieved the proposed changes and the Nuclear Operation Review. Board vill review the changes at a future meeting. A copy of this proposed change is being sent to Dr. C. E. Fox, the Alabama State Designee, in accordance with 10CFR50.91(b)(1).  ;

If there are any questions, please advise. I Respectfully 'ted,  :

f>\ [)%

/ - G. Hairston, III <

VGH,III/REMemgd 8.13  !

Attachments cc Mr. S. D. Ebneter SVORN TO AND SUBSCRIBED BEFORE ME  :

Mr. S. T. Hoffman Mr. G. F. Maxwell THISd[g DAY 0 - 1990 -!

Dr. C. E. Fox '

Notary Public .6 MyCommissionExpirejy M DKMC.2WN I

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' Document Control Oesk  :

U.S. Nuclear Regulatbry Cunnis6 ton  :

W4thington. 0.C. 20555 Attn: Dr. Thomas Merley, Director, NR Reg Mr. Erik, S. Beckjeni, Otractor NR Res '

Mr. Robert M. Bernero, Director, NM5&$

$ubject: Information Bearing Westinghone Copyright Hotices.

Rentlement By letter dated May 8,1990, Westinghouse advised the Nuclear Regulatory' Co:wnission notice.

that work product issued by Westinghousu of such documents for its interne1 use and for placement in public document ro6ms. However, Westinghousr did not authorize the NRC to make copies for the personal use of monbers of the public.NRC is having difficulty in the u As nn-because of the restriction which has been placed on their copying.

interim messure pending resciution of this m6ttar, Westinghouse is willing in allow the NRC tt, make copies of the Westinghouse copyright documents for l cambers of the public who my request:such documents from the NRC, subject to the provisienr, of this letter.

In addition to the permissicn granted in our May.8.1990 letter, Westir.ghouse i hereby grants further authorization to the NRC to copy non proprietary Westinghouse documents submitted in connection with generic or pisnt i sp reviews and approvals, as well as tb4 issuance, denial, amendment, transfer, sugansion, revocation or ytolation of a*1icense,to satisfy renewal, modificationlation, permit, order or regu copyright protection notwithstanding, ding that public requests. This authortretion is granted with the understan any copies of docuants meco-by the NRC will continue to bear the copyright notice, which will be reprtduced along withThe documents when the docuswnts are being copied. The authertzation set forth above does not extend to the proprietary version of Westinghouse documents subniitted to the NRC (Thi not in any way affect the permission previously granted to the NRC to-make copies of such documents fer internal use by the NRC).

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1 The authorization contained in this letter is valid for documents received b,r 1 NRC through December 31,199C' onless terminated by Westinghouse with app opriate written nottet tc' the NRC, and may be extended by Westinghous beyvnd that date. 8y 1rovidicg this authoritation to the NRC, Westinghoul does not Waive any rigits it may otherwise have to control Westinghouse

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i Very trely yours.

N, .bb M

• 4tf41(C 0 Robert A. Wiessmann, Manager Regulatory & Legislative Affairs RAW /hs ect Ms. Valeria Wilson, NRR, NRC i' C. M. Holf.le, Esq., Office of the General Counsel 9

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