ML20217B062

Monthly Operating Rept for Mar 1998 for Nine Mile Point Nuclear Station,Unit 1

ML20217B062
Person / Time
Site:	Nine Mile Point
Issue date:	03/31/1998
From:	Abbott R, Coleman D NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NMP91469, NUDOCS 9804220408
Download: ML20217B062 (5)

Text

I l RichardS. Abbott le$r o oting Office: (315) 349-1812 Fax: (315) 349-4417 April 15, 1998 NMP91469 U.S. Nuclear Regulatory Commission f Attention: Document Control Desk Washington, D.C. 20555 l RE: Nine Mile Point Nuclear Station Unit #1 Docket No. 50-220 DPR-63

Subject:

Operating Statistics and Shutdowns - March 1998 Gentlemen:

I Submitted herewith is the Operating Data Report, Unit Shutdowns and Power Reductions, and a Narrative of Operating Experience for March 1998 for the Nine Mile Point Nuclear Station Unit #1. i l

I Very truly yours, Richard B. Abbott Vice President - Nuclear Engineering

,  ; o

~ ' " " ' ' ' '

! /lh I Enclosures \\

pc: H.J. Miller, Regional Administrator, Region 1 B.S. Norris, Senior Resident inspector [\.\

9804220408 980331 PDR ADOCK 05000220 l R PDR -

' Nino Mile Point Nuclear station, P.O. Box 63, Lycoming, New York 13093 www.nimo.com

OPERATING DATA REPORT DOCKET NO.: 50-220 DATE: 4/08/98 PREPARED BY: D. E. Coleman TELEPIIONE: (315) 349-2558

. OPERATING STATUS

1. Unit Name: Nine Mile Point Unit #1

2. Reporting Period: March 1998 Notes

3. Licensed Thermal Power (MWt): 1850

4. Nameplate Rating (Gross MWe): 642

5. Design Electrical Rating (Net MWe): 613

6. Maximum Dependable Capacity (Gross MWe): 584

7. Maximum Dependable Capacity (Net MWe): 565

8. If Changes Occur in Capacity Ratings (1tems Number 3 through 7) Since Last Report, Give Reasons:

9. Power Level To Which Restricted, if Any (Net MWe):

10. Reasons For Restrictions, If Any:

This Month Yr-to-Date Cumulative

11. Ilours in Reporting Period 744.0 2160.0 250,177.2

12. Number ofIlours Reactor Was Critical 744.0 2160.0 169,162.4

13. Reactor Reserve Shutdov n Ilours 0 0 1,204.2 14.11ours Generator On-Line 744.0- 2160.0 165,138.8

15. Unit Reserve Shutdown flours 0 0 20.4

16. Gross Thermal Energy Generated (MWH) 1,357,395.0 3,955,610.0 281,430,356.0'

17. Gross Electrical Energy Generated (MWH) 466,227.0 1,359,841.0 93,712,734.0

18. Net Electrical Energy Generated (MWH) 453,975.0 1,324,544.0 90,884,672.0

19. Unit Service Factor 100.0 100.0 66.0

20. Unit Availability Factor 100.0 100.0 66.0

21. Unit Capacity Factor (Using MDC Net) 108.0 108.5 60.3 22.' Unit Capacity Factor (Using DER Net) 99.5 100.0 58.7

. 23. Unit Forced Outage Rate 0.0 0.0 22.6

24. Shutdowns Scheduled Over Next 6 Months (Type. Date and Duration of Each):

25. If shutdown At End of Report Period, Estimated Date of Startup:

l

OPERATING DATA REPORT DOCKET NO.: 50-220 DATE:4/08/98

FREPARED BY

D. E. Coleman TELEPIlONE: (315) 349-2558 MONTil March 1998 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (Mwe-Net) (Mwe-Net) 1 620 17 616 2 621 18 617

, 3 620 19 617

. 4 620 20 617 5 620 21 616 6 617 22 616 7 615 23 615 l 8 615 24 616 9 616 25 617 10 615 26 617 11 614 27 616 12 614 28 614 13 615 29 617 i 14 430 30 617

! 15 608 31 617 16 615

[ INSTRUCTIONS

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1 NIAGARA MOHAWK POWER CORPORATION I'

NINE MILE POINT NUCLEAR STATION UNIT #1 NARRATIVE OF OPERATING EXPERIENCE l

l l

I The station operated during the month of March 1998 with a Unit Availability Factor of 100.0% and a Net Design Electrical Capacity Factor of 99.5%. There were no challenges to the Electromatic Relief Valves. Reductions in Capacity Factor included a power reduction to 51% on March 14,1998 to plug a leaking condenser tube. The evolution was I completed in 34.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />. Other reductions in power were associated with #13 Reactor Recirculation Pump being removed from service for maintenance work and a downpower to start the pump (which was aborted due to equipment problems.) On March 6,1998, the i

unit was administratively derated (6 to 10 Mwth) for the duration of the month due to conservatism regarding rated thermal power. The unit was also derated slightly to perform ,

Turbine Stop Valve Testing. l l

l i