ML20141H192

Monthly Operating Rept for June 1997 for Nine Mile Point Nuclear Station,Unit 1

ML20141H192
Person / Time
Site:	Nine Mile Point
Issue date:	06/30/1997
From:	Abbott R, Coleman D NIAGARA MOHAWK POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NMP91457, NUDOCS 9707220074
Download: ML20141H192 (5)

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NIAGA'RA MOHA'//K G E N E R ATIO N M KE N ELEAR SWMN R A, P.O. BOX 63, LYCOMING, NEW YORK 13093 BUSINESS GROUP July 14, 1997 NMP91457 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 1

DPR-63

Subject:

Operating Statistics and Shutdowns - June 1997

,l Gentlemen:

Submitted herewith is the Report of Operating Statistics, Unit Shutdowns and Power Reductions, and a Narrative of Operating Experience for June 1997 for the Nine Mile Point Nuclear Station Unit #1.

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Very truly yours, 1b 8W Richard B. Abbott C.001G Plant Manager - Unit One Enclosures pc:

II.J. Miller, Regional Administrator, Region 1 B.S. Norris, Senior Resident Inspector 1

9707220074 970630 PDR ADOCK 05000220 Ii

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OPERATING DATA REPORT DOCKET NO.: 50-220 l

DATE: 7/07/97 J

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

1. Unit Name: Nine Mile Point Unit #1

2. Reporting Period: June 1997 Notes

3. Licensed Thermal Power (MWt):

1850 l

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

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:

This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 720.0 4343.0 243,600.2

12. Number of Hours Reactor Was Critical 555.6 2394.8 164,671.8 1

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13. Reactor Reserve Shutdown Hours 0.0 0

1,204.2 l

14. Ilours Generator On-Line 544.0 2327.9 160,684.1

15. Unit Reserve Shutdown llours 0.0 0

20.4

16. Gross Thermal Energy Generated (MWil) 970,983.0 4,127,672.0 273,334,452.0 f

17. Gross Electrical Energy Gen,: rated (MWH) 327,439.0 1,399,799.0 90,978,255.0 l

18. Net Electrical Energy Generated (MWH) 318,899.0 1,361,978.0 88,223,532.0

19. Unit Service Factor 75.6 53.6 66.0 I

20. Unit Availability Factor 75.6 53.6 66.0

21. Unit Capacity Factor (Using MDC Net) 78.4 55.5 60.0

22. Unit Capacity Factor (Using DER Net) 72.3 51.2 58.5

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23. Unit Forced Outage Rate 24.4 14.7 22.3

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

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

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l UNIT SHITfDOWNS AND POWER REDUCTIONS DOCKET NO: SNt2e s

h UNIT NAME: NMN1 DATE: 7/97 &7 i

REPORT MONTH - June 1997 PREPARED BY: D. E. Celesman*

i TELEPHONE: (315) 349-2558,

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' ('a== & Corrective Metind of Licensee Duration l Shutting Event System Ceampenent Acties to i

Date Type' (Hours)

Reason' Down Reactor'

. Report #

Cede' Code' Preved Recurrence g,

f 7

970614 F

172.0 A

2 97-06 1he unit was shutdown to repair a drywell inboard floor drain

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isolarion valve.

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8 970621 F'

4.0 A

N/A During the reacsor startup the unit was removed from service to

-i repair a leaking snanway cover on the 2nd stage reheater.1he t

reactor remained critical r

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s F: Forced Reason:

. Method:

Exhibit G - Instrucnons Exhibit 1-Same Source F

5: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparationof Data

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B-Maintenance or Test 2-Manual Scram Entry Sheets for Licensee C-Refueling 3-Autornatic Scram Event Report (LER) File (NUREG4161) l D-Regulatory Restncnon 44)ther (Explain)

E-Orerstor Training & License Exarn F-Admimstrative G-Operanonal Error (Explu0 H-Other (Explam)

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OPERATING DATA REPORT DOCKET NO.: 50-220 e

DATE: 7/07/97 '

PREPARED BY: D. E. Coleman TELEPilONE: (315) 349-2558 MONTil June 1997 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (Mwe-Net)

(Mwe-Net) 1 615 17 0

2 616 18 0

'3 616 19 0

4 612 20 0

5 593 21 121 6

608 22 559 7

617 23 582 8

614 24 607 9

613 25 608 10 612 26 606 11 614 27 604 12 614 28.

605 13 435 29 605 4

14 11 30 604 I

15 0

31 16 0

INSTRUCTIONS On this format, list the average daily unit power levelin M've-Net for each day in the reporting month. Compute to the nearest whole megawatt.

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

The station operated during the month of June 1997 with a Unit Availability Factor of 75.6% and a Net Design Electrical Capacity Factor of 72.3%. There were no challenges to the Electromatic Relief Valves. Reduction in Capacity Factor were due to various reasons. The major contributor

- to lost energy was a unit shutdown starting June 14,1997, for 172 hours0.00199 days <br />0.0478 hours <br />2.843915e-4 weeks <br />6.5446e-5 months <br /> to repair the inboard drywell floor drain isolation valve, which had failed to meet stroke time and LLRT criteria, i

During startup on June 21,1997, the unit was removed from service for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> to repair a leaking manway cover on the 2nd stage reheater. The startup was completed on June 23,1997 i

@l215. Another factor which contributed to capacity factor losses during the period of June 3-6, 1997, was problems associated with Feedwater Heater Extraction Non-F.eturn Valve 115. The plant experienced level control problems in Feedwater Heater String #11 due to the 115 valve being stuck closed.

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