ML20217K463

Monthly Operating Rept for Sept 1999 for Nine Mile Point, Unit 1.With

ML20217K463
Person / Time
Site:	Nine Mile Point
Issue date:	09/30/1999
From:	Close R, Topley D NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NMP93358, NUDOCS 9910260161
Download: ML20217K463 (4)

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Niagara @ Mohawk' I i

October 15, 1999  !

NMP93358 ,

U.S. Nuclear Regulatory Commission  !

Attention: Document Control Desk Washington, D.C. 20555 i RE: Nine Mile Point Unit 1 j Docket No. 50-220 ,

DPR-63 ,

Subject:

Monthly Operating Report for September 1999  ;

Gentlemen:

Submitted herewith is the Operating Data Report, Unit Shutdowns and Power Reductions, and a Narrative of Operating Experience for September 1999 for the Nine Mile Point Nuclear Station Unit #1. Submittal of this information complies with Section 6.9.1.c of the Unit #1 Technical l Specifications.

Very truly yours, ettee g, j David Topley I Plant Manager- Unit 1 l 1

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Attachments  !

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Pc: H. J. Miller, Regional Administrator, Region I I G. K. Hunegs, Senior Resident Inspector j Records Management 1

l 9910260161 990930 m 7.. I PDR ADOCK 05000220 PDR '

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? 5 0 i: 6 Fine Mile Point Nuclear Station Lake Road. PO Box 63, Lycoming. New York 13093 +

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_ ATTACHMENT A OPERATING DATA REPORT DOCKETNO: 50-210 l DATE: 10/11/99 PREPARED BY: R.S. CLOSE TELEPHONE:(315)3491282 OPERATING STATUS Unit Name: Nine Mile Point Unit #1 Reporting Period: September 1999 Design ElectricalRating: (Net Mwe) 613 1

2 Maximum Dependable Capacity: (Net Mwe) 565 This Month Yr-to-Date Cumulative 720.0 4,699.7 179,811.3 :

3 Critica1 Hours 720.0 4,635.2* 175,699.3*

4 Hours Generator On-Line 6

0.0 0.0 20.4 5 Unit Reserve Shutdown Hours 420,510 2,753,230 97,159,337 6 Net Electrical Energy Generated (MWH)

• .On-line hours changed from 337.1 to 337.0 for the month of June 1999.

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SUMMARY

OF OPERATING EXPERIENCES The unit operated during the month of September 1999 with a Net Design Electrical Capacity Factor of 95.3%. The unit was slightly derated during the month to support a ]

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- blind controller replacement for #14 Reactor Recirculation Pump, control rod exercising '

and a TIP Uncertainty, Test. Also, elevated lake temperatures reduced plant efliciency and caused lost generation. There were no challenges to the Electromatic R.elief Va lves or Safety Valves during the month.

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