ML20247R114
| ML20247R114 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 04/30/1998 |
| From: | Coleman D, Rich Smith NIAGARA MOHAWK POWER CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NMP91470, NUDOCS 9805290077 | |
| Download: ML20247R114 (5) | |
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l NIAGARA MOHAWK GENERATlON BUSINESS GROUP kdP91'4 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555 RE:
Nine Mile Point Nu:: lear Station Unit #1 Docket No. 50-220 I
Subject:
Operating Statistics and Shutdowns - April 1998 Gentlemen:
Submitted herewith is the Operating Data Report, Unit Shutdowns and Power Reductions, and a Narrative of Operating Experience for April 1998 for the Nine Mile Point Nuclear Station Unit #1.
l Very truly yours, Robert G. Smith Plant Manager - NMP1 l
/lh Enclosures pc:
H.J. Miller, Regional Administrator, Region 1 B.S. Norris, Senior Resident Inspector
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9 OPERATING DATA REPORT DOCKLT NO.: 50-220 DATE: 5/06/98 PREPARED BY: D. E. Coleman TEL.EPilONE: (315) 349-2558 OPERATING STATUS i
- 1. Unit Name: Nine Mile Point Unit #1
- 2. Reporting Period: April 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 S. If Changes Occur in Capacity Ratings (Items Number 3 through 7) Since Last Report, Give Reasons:
- 9. Power f.evel To Which Restricted, if Any (Net MWe):
- 10. Reavms For Restrictions,If Any:
This Month Yr-to-Date Cumulative
- 11. Ilours in Reporting Period 719.0 2879.0 250,8 %.2
- 12. Number of Ilours Reactor Was Critical 688.3 2828.3 169,830.7
- 13. Reactor Reserve Shutdown llours 0
0 1,204.2
- 14. Ilours Geaerator On-Line 662.2 2822.2 165,801.0
- 15. Unit Reserve Shutdown llours 0
0 20.4
- 16. Gross Thermal Energy Generated (MWil) 1,212,877.0 5,168,487.0 282,643,233.0
- 17. Gross Electrical Energy Generated (MWil) 413,335.0 1,773,176.0 94,126,069.0
- 18. Net Electrical Enetgy Generated (MWil) 402,787.0 1,727,331.0 91,287.459.0
- 19. Unit Service Factor 92.1 98.0 66.1
- 20. Unit Availability Factor 92.1 98.0 66.1 21.' Unit Capacity Factor (Using MDC Net) 99.2 106.2 60.4
- 22. Unit Capacity Factor (Uning DER Net) 91.4 97.9 58.8
- 23. Unit Forced Outage Rate 7.9 2.0 22.5 L
- 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: May 22,1998
_ _ _ _ _ ________________________ _ _ a
l OPERATING DATA REPORT DOCKET NO.: 50-220 DATE:5/06/98 :
PREPARED BY: D. E. Coleman TELEPilONE: (315) 349-2558 MONTli April 1998 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (Mwe-Net)
(Mwe-Net) 1 617 17 610 2
616 18 610 3
616 19 613 4
613 20 613 5
616 21 614 6
615 22 614 7
615 23 612 8
616 24 613 9
616 25 613 10 611 26 614 11 616 27 612 12 616 28 230 13 615 29 0
L 14 615 30 0
15 614 31 16 610 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.
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NIAGARA MOHAWK POWER CORPORATION NINE MILE POINT NUCLEAR STATION UNIT #1 NARRATIVE OF OPERATING EXPERIENCE The station operated during the month of April 1998 with a Unit Availability Factor of 92.1%
and a Net Design Electrical Capacity Factor of 91.4%. There were no challenges to the Electromatic Relief Valves. Reductions in Capacity Factor were due to a forced outage which started on April 28,1998 @ 1509. The unit was removed frorn service due to inoperability of Control Room Emergency Ventilation System. On April 4,1998, #13 Reactor Recirculation Pump was returned to service following preventive maintenance that
- commenced in March. On April 6,1998, #11 Reactor Recirculation Pump was removed from service due to a failed Tach Generator and was returned to service on April 10,1998.
Other reductions in capacity factor were due to two aborted shutdowns. On April 16,1998, the unit commenced a controlled shutdown due to an identified breach in secondary containment. The shutdown was terminated when the Containment Spray Vent valves were shut. On Apiil 17,1998, the unit commenced a controlled shutdown due to a failed surveillance of Reactor Building Ventilation System Isolation valves. The shutdown was terminated when engineering provided analysis to restore operability. Both events resulted in minimalloss of generation.
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