ML20153B086

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

ML20153B086
Person / Time
Site:	Monticello
Issue date:	08/31/1998
From:	Paustian H, Voth M NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9809220319
Download: ML20153B086 (5)

Text

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Northem States Power Company l

Monticello Nuclear Generating Plant 2807 West Hwy 75 Monticello, Minnesota 55362-9637 September 10,1998 US Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 MONTICELLO NUCLEAR GENERATING PLANT Docket No. 50-263 License No. DPR-22 Submittal of Monticello Monthly Operating Report for August,1998 i

l 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 August is provided.

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

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

c:

Regional Administrator - til, NRC NRR Project Manager, NRC Sr Resident Inspector, NRC State of Mir.nesota Attn: Kris Sanda J Silberg k

I

}N[I 9809220319 980831 PDR ADOCK 05000263 R

PDR u

OPERATING DATA REPORT DOCKET NO.

50-263 DATE 9-1-98 COMPLETED BY H. H.

Paustian TELEPHONE 612/295-5151 OPERATING STATUS JNotes j

1. Unit Name -

Monticello

]

]

2. Rcporting eriod:

August

]

]

i

3. Licensed T ermal Power (MWt):

1670

]

]

l

4. Nameplate Rating (Gross MWe) :

576.5

)

)

I 5.

Design Electrical Rating (Net MWe):

552.9

) -

)

l

6. Maximum Dependable Capacity (Gross MWe) : 571.5

)

)

l

7. Maximum Dependable Capacity (Net MWe):

543.5

)

)

8.

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

9.

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

N/A

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

l l

THIS MONTH YR.-TO-DATE CUMULATIVE

11. Mc-ire In Reporting Feriod 744 5831 238176 l

12. Number Of Hours Reactor Was Critical 699.5 4941.6 194985.8

13. Reactor Reserve Shutdran Hours 0.0 0.0 940.7

14. Hours Generator On-Linc 689.8 4895.3 191829.5

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0 l

16. Gross Thermal Energy Generated (MWH) 1087073 7773738 298629343

17. Gross Electrical Energy Generated (MWH) 363327 2647660 101129035

18. Net Electrical Energy Generated (MWH) 345946 2532339 96793396

19. Unit Service Factor 92.7%

84.0%

80.5%

20. Unit Availability Factor 92.7%

84.0%

80.5%

21. Unit Capacity Factor (Using MDC Net) 85.6%

79.9%

75.7%

22. Unit Capacity Factor (Using DER Net) 84.1%

78.5%

74.4%

?3. Unit Forced Outage Rate 7.3%

1.1%

4.3%

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

_None

25. If Shut Down At End Of Report Period, Estimated Date Of Startup:

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

INITIAL ELECTRICITY I

COMMERCIAL OPERATION

.~ - -.-.-

.- - _ ~..--

. ~..- -.-.-. _ -.

AVERAGE DAIL7 UNIT POWER LEVEL DOCKET NO.

50-263 UNIT Montic'ello-DATE 9-1-98 COMPLETED BY H. H.

Paustian TELEPHONE 612/295-5151 4

i

MONTH OF August DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY FudER LEVEL (MWe-Net)

(MWe-Net)

J 1

534.

17 532.

-< 2 537.

18 537.

!3 541.

19 535.

i 4

542, 20 534.

5 540.

21 530.

-6 539.

22 535.

7 541.

23 534.

8, 538.

'24 420.

9

537, 25 315.

'10-534.

'26 322.

. 11 534.

27 297.

12 535.

28

-8.

c

13. -

534.

29

-7.

i-l14 533.

30 225.

I

- 15

536.

31 524.

16 535.

t.,.

[

INSTRUCTIONS on~this format, listLthe average daily unit power level in MWe-Net for each day in the reporting month.

Compute to the nearest whole megawatt.

a

?

a 64 e

.e m

e.-

.-._.-. -..~~. -. ~.

..... ~...

NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO.

50-263

~ ' -

DATE 9

=1-98 COMPLETED BY H. H. Paustian-TELEPHONE 612/295-5151 MONTH AUG

'08-01-98

.to Power operation. 24-98 08-24-98 Power reduction to approximately 63% tc reduce arcing

.-toi problems for #11 Recirculation MG Set.

! 27-98

, 26-98

.to Shutdown for' repairs to #11 Recirculation MG Set.

08-30-98 08-30-98

'08-31-98. Pow'er operation'.

to i

l L

l Note: Power' operation defined as essentially 100% of b

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

i-L-

I k

2' i.

1' fi 4

w-c

.y,-

3-n--

.w- -,

-,-,,w----

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-263 UNIT NAME Monticello DATE 09-02-98 COMPLETED BY H. H. Paustian REPORT MONTH August TELEPHONE 612-295-5151 Method 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 8

08-24-98 F

0.0 A

4 N/A AD 35 Power reduction to approximately 63% power to minimize arcing problems for Recirculation System Motor-Generator Set.

9 08-28-98 F

52.4 A

2 N/A AD 35 Maintenance outage for repairs to Recirculation System Motor-Generator Set i

1 2

3 F

Forced Reason:

4 Method:

S Scheduled A

Equipment Failure (Exp ain)

Draft IEEE Standard 1

Manual B

Maintenance or Test 805-1984 (PdOS-DS) 2 Manual Scram C

r<eiocang 3

Automatic Scram 5

D Regulator Restriction 4

Other(Explain)

IEEE Standard 803A-1983 E

Operator Training & Licensing Examination F

Administrative G

Operational Error (Explain)

H Other(Explain)