ML20141C284

Monthly Operating Rept for Apr 1997 for Monticello Nuclear Generating Plant

ML20141C284
Person / Time
Site:	Monticello
Issue date:	04/30/1997
From:	Richard Anderson, Paustain H NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9705160226
Download: ML20141C284 (5)

Text

/):ff Northem States Power Company Monticello Nuclear Generating Plant j

2807 West Hwy 75 Monticello, Minnesota 55362 9637

)

May 7,1997 Monticello Technical i

Specification 6.7.A.3 l

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 April,1997 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 April is provided.

Please contact Sam Shirey, Sr. Licensing Engineer, at (612) 295-1449 if you require further information.

s Or Roger O Anderson Director Licensing and Management issues

)

c:

Regional Administrator-111, NRC b

NRR Project Manager, NRC Sr Resident inspector, NRC State of Minnesota Attn: Kris Sanda J Silberg 9705160226 970430 ADOCK0500g3 l

PDR R

1G0042

-. ~

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

0 OPERATING DATA REPORT L

i i

DOCKET NO.

50-263 DATE 5-1-97 COMPLETED BY H.

H.

Paustian TELEPHONE 612/295-5151 OPERATING STATUS JNotes j

1. Unit Name :

Monticello

]

]

2.

Reporting period:

April

]-

)

-3. Licensed Thermal Power (MWt) :

1670

]

]

4. Nameplate Rating (Gross MWe) :

576.5

]

]

l S. Design Electrical Rating (Net MWe):

552.9

]

).

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 l-Report, Give Reasons:

9.. Power Level-To Which Restricted, If Any (Net MWe)

N/A l-10. Reasons For Restrictions, If Any: __N/A b

THIS MONTH YR.-TO-DATE CUMULATIVE l

11. Hours In Reporting Period 719 2879 226464

12. Number Of Hours Reactor Was Critical 719.0 2879.0 186271.9

13. Reactor Reserve Shutdown Hours 0.0 0.0 940.7

14. Hours Generator On-Line 719.0 2879.0 183195.4

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0 t

i

16. Gross Thermal Energy Generated (MNH) 1188502 4788683 284660594

17. Gross Electrical Energy Generated (MWH) 410962 1660905 96334420

18. Net Electrical Energy Generated

(' WH) 396006 1602389 92206698 M

19. Unit Service Factor 100.0%

100.0%

80.9%

20. Unit Availability Factor 100.0%

100.0%

80.9%

21. Unit Capacity Factor (Using MDC. Net) 101.3%

102.4%

75.9%

22. Unit Capacity Factor (Using DER Net) 99.6%

100.7%

74.6%

23. Unit Forced Outage Rate 0.0%

0.0%

3.4%.

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

_ Refueling, 1/16/98-2/18/98,. 34 days

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

126. Units In Test Status (Prior to Commercial Operation) : N/A Forecast Achieved l

INITIAL CRITICALITY l

INITIAL ELECTRICITY COMMERCIAL OPERATION l

i l

I*

AVERAGE DAILY UNIT POWER LEVEL l

l DOCKET NO.

50-263 UNIT Monticello l

DATE 5-1-97

-~

i COMPLETED BY H.

H.

Paustian TELEPHONE 612/295-5151 MONTH OF April DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 555.

17 560.

2 555.

18 559.

3 557.

19 558.

4

555, 20 557.

5 555.

21 557.

6 556.

22 557.

7 554.

23 558.

8

529, 24 556.

9 534.

25 556.

10 552.

26 555.

11 553.

27 554.

i 12 464.

28 554.

13 555.

29 554.

14 557.

30 554.

15 548.

16 555.

INSTRUCTIONS l

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.

l t

l i

l NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE I

DOCKET NO.

50-263 DATE 5-1-97 COMPLETED BY H.

H.

Paustian i

l TELEPHONE 612/295-5151 MONTH APR 04-01-97 1

to Power operation.

04-08-97 During safeguards bus voltage testing, the breaker supplying normal power to one of two safeguards busses tripped, resulting 04-08-97 in eventual loading of that safeguards bus onto the emergency diesel generators.

Circ Water Pump # 11 also-tripped as part of the electrical transient and reactor power was reduced to maintain acceptable condenser vacuum.

04-08-97 to Power operation.

04-12-97 Reactor power was reduced to 75% to perform quarterly MSIV 04-12-97 testing, perform single rod scram testing, and to perform miscellaneous maintenance work.

04-12-97 to Power operation.

04-30-97 Note: Power operation defined as essentially 100% of rated power except for weekend load drops for specified surveillance testing.

UNIT SHUrDOVNS AND POWER REDUCTIONS DOCKET NO.

50-263 UNIT NAME Nonticello DATE 15-01-97 REPORT MONril April P JE 6 2/

-5 $$-

No.

Date Ty(peDuration Reason Method LER System Comp.

Cause & Corrective 1)

(hours)

(2) of No.

Code Me Action to Shutdown (4)

(5)

Prevent Recurrence (3) 1 04-08-97 F

0.0 G

4 97-006 EB MTR During safeguard bus testing, test meter was not removed. This caused an electrical transient and power reduction to 90% due to condenser vacuum.

2 04-12-97 s

0.0 B

4 N/A Power reduction to 75% for MSIV quarterly testing single rod scram testing, offgas system controller, tuning, and isophase blower maintenance.

1 2

3 4

F: Forced Reason-Method:

Draft IEEE Standard S: Scheduled A-Equipment Failure (Explain) 1-Manual 805-1984(P805-D5)

B-Haintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram 5

D-Regulator Restriction 4-Other (Explain)

IEEE Standard 803A-1983 E-Operator Training & License Examination F-Administrative

~

G-Operational Error (Explain)

H-Other (Explain) e O