ML20212C460

Monthly Operating Rept for Aug 1999 for Nine Mile Point Nuclear Station,Unit 1.With

ML20212C460
Person / Time
Site:	Nine Mile Point
Issue date:	08/31/1999
From:	Close R, Rich Smith NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NMP93357, NUDOCS 9909210284
Download: ML20212C460 (4)

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NiagrahMohawk' September 15, 1999 NMP93357 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 RE: Nine Mile Point Unit 1 .

Docket No. 50-220 l DPR-63

Subject:

Monthly Operating Report for August 1999 Gentlemen:

Submitted herewith is the Operating Data Report, Unit Shutdowns and Power Reductions, and a Narrative of Operating Experience for August 1999 for the Nine Mile Point Nuclear Station Unit

1. 1. Submittal of this information complies with Section 6.9.1.c of the Unit #1 Technical Specifications.

Very truly yours,

-c3 ,

Robert G. Smith Plant Manager- Unit 1 i

/dle i Attachments i I

Pc: H. J. Miller, Regional Administrator, Region I G. K. Hunegs, Senior Resident Inspector l Records Management 9, ' I 9909210284 990831 PDR ADOCK 05000220 R PDR

.Nine Mile Point Nuclear Station e Lake Road, PO Ilox 63. Lycoming New York 13093 e

. . i ATTACHMENT A OPERATING DATA REPORT DOCKET NO.: 50-220 DATE: 09/08/99 PREPARED BY: R.S. CLOSE TELEPHONE: (315) 349-1282 OPERATING STATUS Unit Name: Nine Mile Point Unit #1 Reporting Period: AUGUST 1999

1. Design Electrical Rating: (Net Mwe) 613

2. Maximum Dependable Capacity (Net Mwe) 565 This Month Yr-to Date Cumulative 3 Critical Hours 639.2 3979.7 179,091.3 4 Hours Generator On-Line 621.4 3.915.3 174.979.4 5 Unit Reserve Shutdown Hours 0 0 20.4 6 Net Electrical Energy Generated (MWH) 353.074 2,332,720.0 96,738,827.0 .

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ATTACHMENT C

SUMMARY

OF OPERATING EXPERIENCES The unit operated during the month of August 1999 with a Net Design Electrical Capacity Factor of 77.4%. On August 1,1999 the unit commenced a reactor stanup from the Shutdown condition that resulted from the July 23,1999 scram. Shonly after .

reaching critical, the reactor scrammed due to a spurious noise spike received on IRM's l 12 and 16 when ranging IRM 11. On August 5, the Unit recommenced reactor startup l and returned to service on August 6,1999. There were no challenges to the Electromatic I Relief Valves or Safety Valves.

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