ML20247E710

Forwards Amends 118 & 107 to Licenses DPR-39 & DPR-48, Respectively & Safety Evaluation.Amends Permit Temporary one-time Changes to Tech Specs Re Auxiliary Electric Power to Allow Performance of Extensive Preventive Maint

ML20247E710
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	09/08/1989
From:	Chandu Patel Office of Nuclear Reactor Regulation
To:	Kovach T COMMONWEALTH EDISON CO.
Shared Package
ML20247E714	List: ML20247E710 ML20247E727 ML20247E742
References
NUDOCS 8909150362
Download: ML20247E710 (4)

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.O 8^ ^ ON1TED STATES o NUCLEAR REGULATORY COMMISSION

[.-l g a WASHINGTON, D. C. 70555 September 8,i'989

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Docket Nos. 50-295 and 50-304 Mr. Thomas'J. Kovach Nuclear Licensing Manager Commonwealth Edison Company Post Office Box 767

. Chicago,. Illinois 60690

Dear Mr. Kovach:

The Comission has issued the enclosed Amendment No.118 to Facility Operating License No.' DPR-39 and Amendment No. '107 to Facility Operating License No. DPR-48 for the Zion Nuclear Power Station,. Unit Nos. I and 2, respectively. The amendments' consist of changes-to the. Technical Specifications in response to your application transmitted by Lletter dated July 6, 1989 as supplemented August 4, August 10, and August 24, 1989.

These amendments permit temporary one-time changes to.the Zion Technical Specifications regarding Auxiliary Electric Power that would allow performing extensive preventive maintenance, in accordance with the manufacturer's recom-mendations, on the diesel generator that is shared between the two units.

A copy of the related Safety Evaluation is enclosed. . Also, the Commission has filed the enclosed " Notice of Issuance of Amendment to Facility Operating License" with the Office of the Federal Register for publication.

Although the Commonwealth Edison Company (Ceco) is aware that the shared "0" diesel has had more startups than the other diesels and preventive maintenance reduces the risk of diesel failures from aging and wear, CECO is unable to perform required maintenance which takes longer than the 7 days under the current Technical Specifications. This situation has arisen before and it will happen in the future. Therefore, the NRC staff and CECO had several discussions regarding the prudency of the repeat-requests for extended maintenance periods. In the August 24, 19_89 letter, Ceco stated that it does not plan to ask for this type of change in the future, and committed to perform a study to determine alternate methods to perform preventive maintenance.on the "0" diesel. These alternatives would include, but not wy I I 8909150362 890908 FDR ADOCK 05000295 P PDC

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- September 8, 1989-Mr. Thomas J. Kovach . p.

. limited to those that would modify existing plant. design or operational

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changes to plant evolutions. We expect that Ceco will inform the staff of 4 its' finding in the near future.

Sincerely, Original signed 'by:

o Chandu P. Patel, Project Manager-

. Project Directorate III-2

i. Division of Reactor. Projects - III, IV, V, and Special Projects Office'of Nuclear Reactor Regulation

Enclosures:

1. . ' Amendment No.118 to DPR-39

2. ' Amendment No.107 to DPR-48

3. Safety Evaluation

4. Federal Register Notice cc w/ enclosures:

See next page DISTRIBUTION Docket file NRC & Local PDRs PDIII-2 r/f MVirgilio 0GC. , DHagan EJordan TMeek (8)

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! Mr. Thomas J.'Kovach ,

limited to those'that would modify existing plant design or operational'

. changes to plant evolutions. We expect that CECO will inform the staff of.

its finding in the near' future.

Sincerely, fhb/'

.Chandu P. Patel, Project Manager Project Directorate.III-2 Division of Reactor Projects - III, IV, V, and Special Projects Office of Nuclear Reactor Regulation-

Enclosures:

1. Amendment No.118 to DPR-39

2. Amendment No.107 to DPR-48 L 3. Safety Evaluation

'4. Federal Register Notice cc w/ enclosures:

See next page i

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g (y,.c Mr. Thomas'J. Kovach~- Zion Nuclear Power Station

,,.- . Commonwealth Edison Company Units 1 and 2 l cc:

Robert J. Vollen Esquire 109 North Dearborn Street 1

Chicago, Illinois 60602 Dr. Cecil Lue-Hing Director of Research and Development l Metropolitan Sanitary District

- of. Greater Chicago l o 100 East Erie Street l Chicago, Illinois 60611 1

L 'Phillip Steptoe, Esq. .

'Sidley and Austin.

One First National' Plaza Chicago, Illinois 60603 Mayor of Zion -

~ Zion Illinois 60099 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park. Drive Springfield, Illinois 62704 U.S. Nuclear Regulatory Comission Resident Inspectors Office 105 Shiloh Blvd.

Zion, Illinois 60099 j Regional Administrator, Region III U.S. Nuclear Regulatory Comission 799 Roosevelt Road, Bldg. #4 Glen Ellyn, Illinois 60137 l

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