ML20236Q170

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

ML20236Q170
Person / Time
Site:	Nine Mile Point
Issue date:	06/30/1998
From:	Coleman D, Rich Smith NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NMP914721, NUDOCS 9807200043
Download: ML20236Q170 (5)

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NIAGARA MOHAWK G E N E R ATIO N ""'"'""'*"'***"#"""""""""

BUSINESS GROUP July 10, 1998 NMP9i4721 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 RE: Nine Mile Point Nuclear Station Unit #1 Docket No. 50-220 DPR-63

Subject:

Operating Statistics and Shutdowns - June 1998 Gentlemen:

Submitted herewith is the Operating Data Report, Unit Shutdowns and Power Reductions, and a Narrative of Operating Experience for June 1998 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 Specifications.

Very truly yours, Robert G. Smith j

, , , Plant Manager - NMP1 l

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pc: H.J. Miller, Regional Administrator, Region 1 B.S. Norris, Senior Resident inspector 9807200043 900630 PDR ADOCK 05000220 R PDR

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OPERATING DATA REPORT DOCKET NO.: 50-220 j DATE: 7/02/98 .,

PREPARED BY: D. E. Coleman TELEPHONE: (315) 349-2558 OPERATING STATUS

1. Unit Name: Nine Mile Point Unit #1

2. Reporting Period: June 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 (Items 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. Hours in Reporting Period 720.0 4343.0 252,360.2

12. Number of Ilours Reactor Was Critical 720.0 3692.2 170,694.6

13. Reactor Reserve Shutdown Hours 0 0 1,204.2

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14. Hours Generator On-Line 720.0 3668.3 166,647.1

15. Unit Reserve Shutdown Hours 0- 0 20.4

16. Gross Thermal Energy Generated (MWH) 1,324,568.0 6,701,699.0 284,176,445.0 l

17. Gross Electrical Energy Generated (MWH) 442,677.0 2,284,922.0 94,637,815.0

18. Net Electrical Energy Generated (MWH) 430,922.0 2,225,413.0 91,785,541.0

19. Unit Service Factor 100.0 84.5 66.0

20. Unit Availability Factor 100.0 84.5 66.0 l 21. Unit Capacity Factor (Using MDC Net) 105.9 90.7 60.4 .

l- 22. Unit Capacity Factor (Using DER Net) 97.6 83.6 58.7 l l 23. Unit Forced Outage Rate - 0.0 15.5 22.7 l L 24. Shutdowns Scheduled Over Next 6 Months (Type, Date and Duration of Each):

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

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. OPERATING DATA REPORT NINE MILE POINT UNIT 1 f-

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, DOCKET NO.: 50-220 DATE:7/02/98 PREPARED BY: D. E. Coleman TELEPHONE: (315) 349-2558 l

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l- MONTil June 1998 l

l DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL

! (Mwe-Net) (Mwe-Net) 1 606 17 599 l, 2 606 18 598 3 605 19 598 l 4 604 20 596 5 606 21 596 l 6 606 22 571 7 606 23 588 8 607 24 591 9 606 25 595 10 608 26 587 11 608 27 588 12 609 28 590 l 13 607 29 590

.14 603 30 585 15 598 31 l 16 601 INSTRUCTIONS On this format, list the average daily unit power level in Mwe-Net for each day in the reporting month. Compute to the nearest whole megawatt. J

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-. . NIAGARA MOHAWK POWER CORPORATION t NINE MILE POINT NUCLEAR STATION UNIT #1 NARRATIVE OF OPERATING EXPERIENCE

g. The plant operated during the month of June 1998 with a Unit Availability Factor of

-100.0% and a Net Design Electrical Capacity Factor of 97.6%. There were no challenges to the Electromatic Relief Valves or Safety Valves. Reductions in Capacity 1 Factor were due to #14 Reactor Recirculation Pump removed from service for preventive maintenance on June 15,1998 and returned to service on June 20,1998.

On June 22,1998, the unit commenced a shutdown due to the Automatic

' Depressurization System being declared inoperable. Repairs were made before shutdown was completed and power was returned to 100%.

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