ML20059E158

Advises That Util 900425 Response to NRC Bulletin 90-002, Loss of Thermal Margin Caused by Channel Bow, Acceptable

ML20059E158
Person / Time
Site:	Fermi
Issue date:	08/30/1990
From:	Stang J Office of Nuclear Reactor Regulation
To:	Orser W DETROIT EDISON CO.
References
IEB-90-002, IEB-90-2, TAC-76330, NUDOCS 9009100050
Download: ML20059E158 (3)

Text

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August 30, 1990 l 3  !

. . . i Docket No. 50-341  !

l l

Mr. William S. Orser Senior Vice President - Nuclear  :

Operations -

Detroit Edison Company 6400 North Dixie Highway Newport, Michigan 48166 Caar Mr. Orser: ,

1

SUBJECT:

FERMI-2 RESPMSE TO NRC BULLETIN 90-02, " LOSS OF THERMAL MARGIN '

CAUSED BY CHANNEL BOX BOW" (TAC NO. 76330)

By let.ter dated April 25, 1990 (NRC-90-0078), Detroit Edison Company (DECO) responded to NRC Bulletin 90-02 concerning loss of thermal margin caused by . )

channel box bow. The subject bulletin requested Detroit Edison Company.(Deco) to identify the number and location of channel boxes being used longer than '

one fuel cycle, and that compliance with the Technical Specifications' thermal limits be confirmed. Your response confirmed that the inspections requested by the subject bulletin had been performed and the inspections indicated that fuel channel boxes will not be used after the first bundle lifetime.

The staff has reviewed your response to Bulletin 90-02 and finds your response '

has me all the requirements of the bulletin. Therefore; the staff finds your '

respont3 to Bulletin 90-02 to be acceptable and no additional actions are required. The staff recommends that the analysis prepared.in response to the bulletin be kept on file for further review by NP.C inspectors.

Sincerely, f@ r(10w.' m John F. Stang, Project Manager Project Directorate 111-1 Division of Reactor Projects - III.-  !

IV, V & Special Projects Office of Nuclear Reactor Regulation ,

cc: See next page i

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k a NUCLEAR REGULATORY COMMISSION UNITED STATES 5 WASHINGTON, D. C, Posss August 30, 1990 i

Docket No. 50-341 '

I Mr. William S. Orser '

Senior Vice President - Nuclear Operations

-Detroit Edison Company 6400 North Dixie Highway Newport, Michigan 48166-1

SUBJECT:

FERMI-2 RESPONSE TO NRC BULLETIN 90-02, " LOSS OF THERMAL MARGIN CAUSED BY CHANNEL 80X BOW" (TAC NO. 76330)

By letter dated April 25, 1990 (NRC-90-0078), Detroit Edison Company (Deco) responded to NRC Bulletin 90-02 concerning loss of thermal margin caused by channel box bow. The subject bulletin requested Detroit Edison Company.(DECO) to identify the number and location of channel. boxes being used longer than one fuel cycle, and that compliance with the Technic,$ Specifications' thermal limits be confirmed. Your response confirmed that the inspections requested by the subject bulletin had been performed and the inspections indicated that fuel chann:,1 bow s will not be used after the first bundle lifetime.

The staff has reviewed your response to Bulletin 90-02 and finds-yeur response has mat all.the requirements of the bulletin. Therefore, the st@ i finds your respoi se to Bulletin 90-02 to be acceptable and no additional aNons are l

requirad. The staff recommends that the analysis prepared in retponse to

{ the bulletin be kept on file for further review by NRC inspectors.

t Sincerely, Fohn F. St , Project Manager ,

Project Directorate III-1 Division of Reactor Projects - III, IV, V & Special Projects Office of Nuclear Reactor Regulation-cc: S'ee next page

I Mr. William Orser Fermi-2 Facility Detroit Edison Company cc:

John Flynn, Esq.

Stnior Attorney Detroit Edison Comparty l 2000 Second Avenue i Detroit, Michigan 48226 I Huclear Facilities and Environinental Monitoring Section Office Division of Radiological Health  !

P. O. Box 30195 Lansing, Michigan' 48909 t'r. Walt Rogers l U.S. Nuclear Regulatory Comission.

Resident Inspector's Office 6450 W. Dixie Highway Newport, Michigan 48166 Henroe County Office of Civil Preparedness 963 South Raisinville fionroe, Michigan 48161 Regior,61 Administrator, Region III

• U.S. Nuclear Regulatory Corrission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Ms. Lynr.e Goodman Superviser - Licensing I 1

Detroit Edison Company ferti Unit 2 i 6400 t: orth Dixie Highway Newport, Michigan 48166 <

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