ML20046D027

Forwards DNPS Monthly Operating Summary Rept for July 1993. Starting This Reporting period,10CFR50.59 Info No Longer Reported on Monthly Basis

ML20046D027
Person / Time
Site:	Dresden
Issue date:	08/11/1993
From:	Spedl G COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
Shared Package
ML20046D028	List: ML20046D027 ML20046D031
References
GFS-LTR-93-0045, GFS-LTR-93-45, NUDOCS 9308160051
Download: ML20046D027 (2)

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i Morris, !!!inois 60450 Teiephone 815/942-2920 August 11, 1993 GFS LTR #93-0045 Director, Nuclear Reactor Regulation United States Nuclear Regulatory Commission Washington, DC 20555 Attention: Document Control Desk Gentlemen:

Subject:

Monthly Operating Data Report Dresden Nnclear Pcwer Station Commonwealth Edis(m Company Docket Nos.50-010,50-237, and 50-249

References:

1.

GFSLTR L N)l5, Monthly Operating Data Report, dated July 12, 1993.

2.

GFSLTR #93-0016, Monthly Operating Data Report, dated July 14,1993.

Enchised is the Dresden Nuclear Power Station Monthly Operatine Summary Report for July 1993. Starting with this reporting period,10 CFR 50.59 information will no longer he reported on a monthly basis. Changes implemented in July and thereafter are expected to be reported along with the FSAR updates. This change in reporting frequency remains within the guidance provided in 10 CFR 50.59(b)(2), which states that the report on changes, tests and experiments, with the accompanying safety evaluation summaries, may be submitted annually or along with the FSAR updates as required by 50.71(e), or at shorter intervals as may be specified by the licensee.

p Table 3.1 contains a correction in the 3 car-to-date and cumulative forced outags factors for Unit 2. In the report for the the month of June (References 1 and 2), a year-to-date factor of 72.4% a'nd a cumulative factor of 28.8% were reported due to a calculation error in which shedukd outage hours were inadertently factored in with the forced outage hours. The corrected information is reflected in the factors calculated for July in Table 3.1.

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l Table 3.2 contains a correction in the year-to-date and cumulative forced outage factors for Unit 3. In the report for l

the the month of June (References I and 2), a year-to-date factor of 36.2% and a cumulative factor of 30.8% were i

reported due to L calculation error in which sheduled outage hours were inadertently factored in with the forced outage hours. The corrected information is reflected in the factors calculated for July in Table 3.1.

This information is supplied to your office in accordance with the instructions set forth in Regulatory Guide 1.16.

Sincerely,

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NRC Rgion III Office i

Illinois Dept. of Nudear Safety, State of Illinois U.S. NRC, Document Management Branch Nudear Licensing Administrator Site Vice Pres.

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General Manager - Nuclear Services OPEX Engineer (2) j NRC Senior Resident Inspector Site Quality Verification - Dresden j

Site Engineering and Construction Manager Nudear Oversight Manager / R. Janecek i

Comptroller's Office INPO Records Center UDI,Inc.- Wash.,D,C.

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