ML20236R194

Monthly Operating Rept for June 1998 for Monticello Nuclear Generating Plant

ML20236R194
Person / Time
Site:	Monticello
Issue date:	06/30/1998
From:	Paustian H, Voth M NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9807210292
Download: ML20236R194 (5)

Text

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1 Northem States Power Company i

Monticello Nuclear Generating Plant 2807 West Hwy 75 Monticello, Minnesota 55362 9637 July 13,1998 US Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 MONTICELLO NUCLEAR GENERATING PLANT Docket No. 50-263 License No. DPR-22 h

Submittal of Monticello Monthly Operating Report for June,1998

)

In accordance with Monticello Technical Specification 6.7.A.3, the report of operatir.g statistics for the Monticello Nuclear Generating Plant for the Month of June is provided.

3 Please contact Marcus H. Voth, Project Manager - Licensing at (612) 271-5116 if you require further information. l

}

Marcus H. Voth Project Manager - Licensing Nuclear Energy Engineering Dept. ' '

c: Regional Administrator-!!I, NRC NRR Project Manager, NRC Sr Resident inspector, NRC State of Minnesota g

Attn: Kris Sanda 1, J Silberg 9007210292 980630-f PDR ADOCK 05000263 R PM l

l lg '. OPERATING DATA ~ REPORT i DOCKET NO. 50-263 DATE 7--1-98 l COMPLETED BY H. H. Paustian 612/295-5151 i

TELEPHONE OPERATING STATUS l ] Notes j i 1. Unit'Name - Monticello ] ]

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2. Reporting period: June ] ]

3.. Licensed Thermal Power (MWt) : 1670 ] ]

4. Nameplate Rating (Gross MWe) : 576.5 ] ]

5. D3 sign Electrical Rating (Net MWe): 552.9 ] ]

6s Maximum Dependable Capacity (Gross MWe) : 571.5. ] ]

7. Maximum Dependable Capacity (Net MWe) : 543.5 ] ]

E

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last R2 port, Give Reasons:

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

10. Reasons For Restrictions, If Any: __N/A THIS MONTH YR.-TO-DATE CUMULATIVE l 11. Hours In Reporting Period 720 4343 236688 i 12. Number Of Hours Reactor Was Critical 720.0 3498.1 193542.3

13. Reactor Reserve Shutdown Hours 0.0 0.0 940.7

14. Hours' Generator On-Line 720.0 3461.4- 190395.7 o15. Unit. Reserve Shutdown Hours 0.0 0.0 0.0 L16.' Gross Thermal Energy Generated (760R) 1195215 5450701 296306306

' 17. Gross Electrical Energy Generated (1903) 407233 1869696 100351071 l

18. N3t Electrical Energy Generated' (MWH) 390659 1790705 96051762

19. Unit Service Factor 100.0% 79.7% 80.4%

l 20. Unit Availability Factor 100.0% 79.7% 80.4%

l21. Unit Capacity Factor (Using MDC Net) 99.8% 75.9% 75.6%

' 22. Unit Capacity Factor (Using DER Net) 98.1% 74.6% 74.3%

l 23. Unit Forced Outage Rate 0.0% 0.0% 4.3%

l 24. Shutdowns Scheduled Over Next 12 Months (Type, Date, and Duration of Each) l None r 25. If Shut Down At End Of Report Period, Estimated Date Of Startup:

! 26. Units In' Test Status (Prior to Commercial Operation): N/A Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY l

COMMERCIAL OPERATION

_ _ _ _ _ _ _ . - _ - _ - - _ _ _ - _ . ____-._.-_.______.___.____-.________-____m _.._-______m__ ___.m_ _ _ _ _ _ _. ___m _ _ _ _ _ - _ _ - _ _ _ . . _ _ _ _ _ . _ _ _ _ _

t i

g AVERAGE DAILY UNIT POWER LEVEL 0

DOCKET NO. 50-263 UNIT Monticello -

DATE 7- 1-98 COMPLETED BY H. H. Paustian .

TELEPHONE 612/295-5151  !

MONTH OF June DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 544. 17 541.

2 546. 18 541.

3 550. 19 541.

4 553. 20 542.

5 553, 21 543.

6 552. 22 543.

7 553. 23 544.  ;

8 548. 24 538. j 9 541. 25 543.

10 554. 26 541.

11 552. 27 539.

12 552, 28 540.

13 552. 29 457.

14 547. 30 538.

15 545.

16 543.

INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each dny in the reporting month. Compute to the nearest whole megawatt.

l

I NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE

. DOCKET NO. 50-263 DATE 7- 1-98 COMPLETED BY H. H. Paustian TELEPHONE 612/295-5151 MONTH JUN 06-01-98 to Power operation.

06-09-98 Power reduction to approximately 80% power in response 06-09-98 to indication of high, generator stator cooling temperature. Indication subsequently found to be false.

06-09-98 to Power operation.

06-29-98 Power reduction to approximately 25% power in response to loss 06-29-98 of condenser vacuum caused by offgas recombiner condensate cooling pump problems.

06-29-98 to ' Power operation.

06-30-98

! J Note: Power operation defined as essentially 100% of )

rated power except for weekend load drops for specified surveillance testing.

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