ML20154P182

Monthly Operating Rept for Sept 1998 for Nine Mile Point Nuclear Station,Unit 1.With

ML20154P182
Person / Time
Site:	Nine Mile Point
Issue date:	09/30/1998
From:	Close R, Conway J NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NMP91477, NUDOCS 9810220243
Download: ML20154P182 (5)

Text

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u Octotwr 15 NMP01477,1998 October 15,1998 t

U.S. Nuclear Regulatory Commission Attention: Documer't Control Desk Washington, D.C. 20555 RE:

Nine Mile Point Nuclear Station Unit #1 Docket No. 50-220 DPR-63

Subject:

Operatin0 Statistics and Shutdowns - Septemuer 1998 Gentlemen:

Submitted herewith is the Operating Data Report, UnP. Shutdowns and Power Reductions, and a Narrative of Operating Experience for September 1998 for the Nine Mile Point Nuclear Station Unit #1. Submittal of this inforrnation complies with Section 6.9.1.c of the Unit #1 Technical Specifications.

Very truly yours, I

w pVice President Nucle r49ner ion ohn T. Conway

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Enclosures pc:

HA. Miller, Regional Administrator, Region 1 B.S. Norris, Senior Resident inspector

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t 9810220243 980930 PDR ADOCK 05000220

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OPERATING DATA REPORT DOCKET NO.: 50-220 DATE: 10/07/98 PREPARED BY: R.S. C4se TELEPlIONF.: (315) 349-2558 OPERATING STATUS

1. Unit Name: Nine Mile Point Unit #1

2. Reporting Period: September 1998 Notes

3. Licensed Thermal Power (MWt):

1850

4. Nameplate Rating (Gross Mwe):

642 i

5. Design Electrical Rating (Net Mwe):

613

6. Maximum Dependable Capacity (Gross Mwe):

584

7. Maximum Dependable Capacity (Net Mwe):

565

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

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

- 10. Reasons For Restrictions,if Any:

Tids Month Yr to Date Cumulative

11. Ik>urs in Reporting Period 720.0 6551.0 254,568.2

12. Number of Ilours Reactor Was Critical 720.0 5900.2 172,902.6

13. Reactor Reserve Shutdown flours 0

0 1,204.2 14.1-lours Generator On-Line 720.0 5876.3 168,855.1 l

15. Unit Rcserve Shutdown flours 0

J 20.4 3'

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16. Gross Thermal Fnergy Generated (MWil) 1,327,426.0 10,7%5 M.0 288,239,250.0

17. Gross Electrical Energy Generated (MWil) 428,840.0 3,602,105.0 95,954,998.0 j

18. Net Electrical Energy Generated (MW11) 416,833.0 3,505,579.0 93,065,707.0

19. Unit Service Factor 100.0 89.7 66.3

20. Unit Availability Factor 100.0 89.7 66.3 c.

21. Unit Capacity Factor (Using MDC Net) 102.5 94.7 60.7

22. Unit Capacity Factor (Using DER Net) 94.4 87.3 59.0

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23. Unit Forced Outage Rate 0.0 10.?

22.4

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

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

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OPERATING DATA REPORT NINE MILE POINT UNIT 1 DOCKET NO.: 50-220 DATE:10/07/98 PREPARED BY: R. S. Close I

TELEPilONE: (315) 349-2558 MONTII September 1998

' ' DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (Mwe-Net)

(M we-Net) 1 574 17 580

. 2 574 18 578 3

575 19 519

'4 574 20 577 5.

574 21 573

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6 575 22 581 7

574 23 586 i

8 574 24 585 9

575 25 582 10 578 26 5&1 11 579 27 585 12 595 28 586 13 595 29 586 14 580 30 585 I

15 580

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- 16 579 INSTRUCTIONS l

On this format, list the ave age daily unit power level in Mwe-Net for each day in the reporting month. Compute to the nearest

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whole megawatt.

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO: 50-220 NINE MILE POINT UNIT 1 UNITNAME: NMP#1 DATE: 10/07/98 REPORT MONTH-September 1998 PREPARED BY: R. S.Close TELEPHONE: (315) 349-2558 Method of Licenses Cause & Corrective Duration Shutting Event System Component' Action to i

Dste Type'

@ours)

Reason De Report s Ne' C M e' Nvent Recumnce No*

8 Reactor No entries this month.

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et i

1 2

3 4

S F: Forced Reason:

Method:

Exhibit G -Instructions Exhibit i-Same Source 3: Scheduled A-Equipment Fai!ure (Explain) 1-Manual for Preparation of Data B-Mairnenance or Test 2-Manual Scram Entry Sheets for Licanse.e C-Refuehng 3-Automatic Scram Event Report (LER) File (NUREG-0181)

D-Regulatory Restriction 4-Other (Explain)

E-Operator Training & License Exam F-Administrative G-Operctional Error (Explain)

H-Other (Explain)

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

I The plant operated during the month of September 1998 with a Unit Availability Factor of 100.0% and a Net Design Electrical Capacity Factor of 94.4%. There were no challenges to the Electromatic Relief Valves or Safety Valves. Reductions in Capacity Factor were due to elevated lake temperatures and corresponding reductions in plant efficiency. Also, #15 Reactor Recirculation Pump was removed from service for preventive maintenance; the unit incurred a slight derate when returning the pump to

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