ML20210B908

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

ML20210B908
Person / Time
Site:	Nine Mile Point
Issue date:	06/30/1999
From:	Close R, Rich Smith NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NMP91491, NUDOCS 9907230273
Download: ML20210B908 (4)

Text

.

NiagarahMohawk" l

l July 15, 1999 {

NMP91491 1

U.S. Nuclear Regulatory Commission Attention: Document Control Desk l

Washington, D.C. 20555 RE: Nine Mile Point Nuclear Station Unit #1 Docket No. 50-220 l DPR-63 ,

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Subject:

Operating Statistics and Shutdowns - June 1999 Gentlernen:

Submitted herewith is the Operating Data Report, Unit Shutdowns and Power Reductions, and a Narrative of Operating Experience for June 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 Specification:.

l Very truly yours,

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,44%d -WE .

Robert G. Smith l Plant Manager - NMP1

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q, Enclosures pc: H.J. Miller, Regional Administrator, Region 1 / l G.K. Hunegs, Senior Resident inspector l

9907230273 990630 0 DR ADOCK 0500

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! ATTACHMENT A OPERATING DATA REPORT l

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DOCKET NO.: 50-220 l DATE: 07/08/99 PREPARED BY: R.S. CLOSE TELEPHONE:(315) 349-1282 OPERATING STATUS Unit Name: Nine Mile Point Unit #1 Reporting Period: JUNE 1999

1. Design Electrical Rating:(Net Mwe) 613

2. Maximum Dependable Capacity (Net Mwe) 565 l

l This Month Yr-to-Date Cumulative

3. Critical Hours 379.4 2796.5 177,908.1 1

4. Hours Generator On-Line 337.1 2749.9 173,814.0

5. Unit Reserve Shutdown Hours 0 0 20.4

6. Net Electrical Energy Generated (MWH) 182,537 1,659,500 96,065,607 1

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ATTACHMENT C

SUMMARY

OF OPERATING EXPERIENCES The unit operated during the month ofJune 1999 with a Net Design Electrical Capacity Factor of 41.4%. The refuel outage was completed on June 16,1999. The duration of the scheduled / extended refuel outage was 1588.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> (66.2 days). As part of scheduled startup activities, the unit was removed from service for 4.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> for turbine overspeed trip testing.

During power ascension and after the unit reached 100%, reactor power was reduced several times to support maintenance and testing of the turbine control Mechanical Pressure Regulator (MPR) and Electronic Pressure Regulator (EPR). There were no challenges to Electromatic Relief Valves or Safety Valves during the month.

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