ML20084Q570

Forwards Application for Amend to License NPF-3,revising TS 3.8.1.1 - Ac Sources,Operating to Increase Allowed Outage Time Period for One EDG Being Inoperable from 72 H to 7 Days

ML20084Q570
Person / Time
Site:	Davis Besse
Issue date:	06/01/1995
From:	Stetz J CENTERIOR ENERGY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20084Q572	List: ML20084Q570 ML20084Q575 ML20084Q578
References
2292, NUDOCS 9506080660
Download: ML20084Q570 (2)

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a . [y EE 300 Modison Avenue g p, g V ce President . Nuclear 3 Davis-Besse Docket Number 50-346 License Number NPF-3 Serial Number 2292 June 1, 1995 United States Nuclear Regulatory Commission Document Control Desk Vashington, D. C. 20555 Subj ect : Proposed Modification to the Davis-Besse Nuclear Power Station (DBNPS), Unit Number 1, Facility Operating License NPF-3, Appendix A Technical Specifications to Revise Technical Speci-fication 3.8.1.1 - A.C. Power Sources, Operating t

Ladies and Gentlemen:

Enclosed is an application for an amendment to the DBNPS Unit Number 1 Operating License NPF-3, Appendix A, Technical Specifications. The proposed changes involve Technical Specification (TS) 3.8.1.1 - A.C.

Power Sources, Operating and Bases 3.0.5. .

This application proposes changing the allowed outage time in Technical Specification 3.8.1.1 - A.C. Power Sources, Operating, for one unavail- ,

able Emergency Diesel Generator (EDG) from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 7 days. This change is proposed as a result of: (1) the installation of the Station Blackout Diesel Generator,' equivalent in capacity to each of the two EDGs, pursuant to 10 CFR Section 50.63, (2) an evaluation of the impact -

of the extended EDG allowed outage time on the DBNPS probabilistic risk assessment, (3) a review of the risk associated with performing mainten-ante on an EDG during power operation and during an outage, and (4) the minimal effect of a 7 day allowed outage time on the availability of an EDG. A change is also proposed for Bases 3.0.5 to reflect the 7 day EDG A0T.

This change is also being submitted to the NRC as a Cost Beneficial Licensing Action (CBLA). This change vill not adversely impact safety and vill permit flexibility in performing preventive maintenance on.the EDGs during power operation. This represents a potential savings of 9506090660 950601 PDR ADOCK 05000346 P PDR Operahng Componies- .

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• License Number NPF-3 Serial Number 2292-Page 2

$3,150,000 (1995 dollars) over the DBNPS's remaining life exclusive of replacement power costs. Replacement power cost savings could add, up to an additional $2,100,000 savings.

In order to facilitate the planning of the Spring 1996 refueling outage  !

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and the following operating cycle, Toledo Edison requests that the NRC

-> approve and issue this change by December 1, 1995. '

Should you have~any questions or require additional information, please contact Mr. Villiam T. O'Connor, Manager - Regulatory Affairs, at  ;

(419) 249-2366.  ;

Very truly yours, f 9i e

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Enclosure cc: L. L. Gundrum, DB-1 NRC/NRR Project Manager J. B. Martin, Regional Administrator, NRC Region III  ;

S. Stasek, DB-1 NRC Senior Resident Inspector  !

J. R. Villiams, Chief of Staff, Ohio Emergency Management Agency, State of Ohio (NRC Liaison) '

Utility Radiological Safety Board l

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