ML20195D238

Monthly Operating Rept for Oct 1998 for Monticello Nuclear Generating Plant.With

ML20195D238
Person / Time
Site:	Monticello
Issue date:	10/31/1998
From:	Paustian H, Voth M NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9811170321
Download: ML20195D238 (5)

Text

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'1 Northem States Power Company Monticello Nuclear Generating Plant  !

2807 West Hwy 75 l Monticetto, Minnesota 55362-9637 '

l l

November 10,1998 US Nuclear Regulatory Commission Attn: Document Control Desk I Washington, DC 20555 MONTICELLO NUCLEAR GENERATING PLANT Docket No. 50-263 License No. DPR-22 Submittal of Monticello Molthly Operating Report for October,1998 In accordance with Monticello Technical Specification 6.7.A.3, the report of operating statistics for the Monticello Nuclear Generating Plant for the Month of October is provided.

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

c k-or Marcus H. Voth Project Manager - Licensing Nuclear Energy Engineering Dept.

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

j. Attn: Kris Sanda

! J Silberg i

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PDR 3 DOCK 05000263 R PDR,

- m _ _ _ _ _ _ .__..__ _ _ ._ . __ . . _ . __ _- _.

.; . OPERATING DATA REPORT DOCKET NO. 50-263 DATE 11- 2-98 COMPLETED BY H. H. Paustian TELEPHONE 612/295-5151 OPERATING STATUS

] Notes j

1. Unit Name -

Monticello ] ]

2. Reporting period: October ]  ?

3. Licensed Thermal Power (MWt) : 1775 ) ] l

4. Nameplate Rating (Gross MWe): 617.5 ) ] l

5. Design Electrical Rating (Net MWe) : 593.9 ] ]

6. Maximum Dependable Capacity (Gross MWe) : 612.5 ] ] i

7. Maximum Dependable Capacity (Net MWe) : 584.5 ) ]

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons: Monticello was rerated to a new licensed power of ,

1775 MWt during October. Electrical ratings / capacities are preliminary.((

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

10. Reasons For Restrictions, If Any: __N/A  !

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THIS MONTH YR.-TO-DATE CUMULATIVE

11. Hours In Reporting Period 745 7296 239641 l

.12 . Number Of Hours Reactor Was Critical 745.0 6258.0 196302.1 i l 13. Reactor Reserve Shutdown Hours 0.0 0.0 940.7 )

i 14. Hours Generator On-Line 745.0 6197.7 193131.9

. 15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1247587 9944478 300800083

17. Grvo. Electrical Energy Generated (MWH) 432063 3393442 101874817 i

18. Net Electrical Energy Generated (MWH) 417229 3248847 97509904

19. Unit Service Factor 100.0% 84.9% 80.6%

20. Unit Availability Factor 100.0% 84.9% 80.6%

l 21. Unit Capac!ty Factor (Using MDC Net) 101.7% 81.8% 75.8%

t 22. Unit Capacity Factor (Using DER Net) 100.0% 80.4% 74.5%

23. Unit Forced Outage Rate 0.0% 3.4% 4.3%

, 24. Shutdowns Scheduled Ovel Next 12 Months (Type, Date, and Duration of Each) j _None

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 i INITIAL CRITICALITY i

INITIAL ELECTRICITY COMMERCIAL OPERATION i

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AVERAGE DAILY UNIT POWER LEVEL '

DOCKET NO. 50-263 UNIT Monticello ~~

DATE 11- 2-98 COMPLETED BY H. H. Paustian

-TELEPHONE 612/295-5151 i

MONTH OF October l l

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) l 1 554. 17 548.

2 555. 18 .__557.

3 559. 19 548.

4 503. 20 564.

5 556. 21 546.

6 555. 22 564. j 7 557. 23 572.

-8 538. 24 572.

i 9 555. 25 572. l l

10 555. 26 578.

I 11- 556. 27 582.

12 557. 28 584.

l - 13 539. 29 584.

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[ 14. 558. 30 589.

l 15 551. 31 598.

I l 16 557.

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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. MARRATIVE

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO. 50-263 DATE 11- 2-98

, COMPLETED BY H. H. Paustian TELEPHONE 612/295-5151 MONTH OCT 10-01-98 to Power operation.

10-04-98 10-04-98 Power reduction to 75% for MSIV quarterly testing, control pattern adjustment, and fuel preconditioning.

10-04-98 to Power operation.

10-31-98 Minor power reductions occurred on several days to perform testing as part of the Monticello rerate testing program for increasing rated power from 1670 MWt to ,

1775 MWt.

Note: Power operation defined as essentially 100% of rated power except for weekend load drops for specified surveillance testing.

__ _A

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ko UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-263 UNIT NAME - Monticello -

DATE 11-05-98 COMPLETED BY H. H. Paustian REPORT MONTH October TELEPHONE 612-295-5151' Methc,d of System Comp Cause & Corrective Type Duration Reason Shutdown Code Code Action to No. Date (1) (hours) (2) (3) LER No. (4) (5) Prevent Recurrence

, 11 10-4-98 S 0.0 B 4 N/A Power reduction to 75% to perform quarterly Main Steam Isolation Valve testing, adjust control rods, and precondition fuel.

I 1 2 3 4 -

F Forced Reason: Method: Draft IEEE Standard '

S Scheduled A Equipment Failure (Explain) 1 Manual 805-1984 (P805-D5)

B Maintenance or Test 2 Manual Scram C Refueling 3 Automatic Scram 5  ;

D Regulator Restriction 4 Other (Explain) lEEE Standard 803A-1983  ;

E Operator Training & Licensing Examination F Administrative G Operational Error (Explain) .

H Other (Explain) l i