ML20082J441

Monthly Operating Rept for Mar 1995 for Davis-Besse Nuclear Power Station Unit 1

ML20082J441
Person / Time
Site:	Davis Besse
Issue date:	03/31/1995
From:	Wolf G, Jeffery Wood TOLEDO EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
KB-95-0055, KB-95-55, NUDOCS 9504180248
Download: ML20082J441 (4)

Text

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' i di TOLEDO EDISON  ;

A Centerior Energy Company T E O 1 l

4 April 11, 1995 KB-95-0055 Docket No. 50-346- I License No. NPF-3 U.S. Nuclear Regulatory Commission l

Document Control Desk Washington, D.C. 20555 Gentlemen:

Monthly Operating Report, March 1995 Davis-Besse Nuclear Power Station Unit 1 Enclosed are ten copies of the Monthly Operating Report for Davis-Besse Nuclear Power Station Unit No. 1 for the month of March 1995.

If you have any questions, please contact G. M. Wolf at (419) 321-8114.

1 I

Very truly yours, J

1 J n K. Wood l Plant Manager _

Davis-Besse Nuclear Power Station GMV/dmc Enclosures cc: L. L. Gundrum NRC Project Manager J. B. Martin Region III Administrator S. Stasek NRC Senior Resident Inspector, Stop 4030 1S0049 ~

9504180248 950331 PDR ADOCK 05000346 R PDR ,

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.- AVERAGE DAILY UNIT POWER LEVEL 4

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. DOCKET NO. 50-0346 i .

j. UNIT Davis-Besse Unit 1 l

l DATE 4-4-95 i

COMPLETED BY GERALD M. WOLF TELEPHONE 419 -321-8114 i

1 L MONTH MARCH 1995 '

j AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL DAY (MWe-Net) DAY (MWe-Net) l I

1 889 17 885 J 2 890 18. 885 t 3 891 19 882 4 889 20 879 5 890 21 884 6 891 22 880 7 886 23 808 8 887 24 876 l

9 888 25 885 10 887 26 886 i

11 887~ 27 886

, ~ 12 887 28 886 13 884 29 886 l 1

14 886' 30 885 15 884 31 886 16 885 i

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OPERATING DATA REPORT

- DOCKET NO 50- 0346  ;

DATE April 4,1995 COMPLETED BY Gerald M. Wolf  :

l TELEPHONE - 419/321 - 8114  !

OPERATING STATUS

1. Unit Name: Davis-Besse Unit 1 Notes

2. Reporting Period March 1995 l

3. Licensed Thermal Power (MWt) 2772

4. Nameplate Rating (Gross MWe) 925 .;

5. Design Electrical Rating (Not MWe) 906

6. Maximum Dependable Capacity (Gross MWe) 913

7. Maximum Dependable Capacity (Not MWe) 868 i

8. If Changes Occur in Capacity Ratings - t (ltems number 3 through 7) since last report, give reasons:

( 9. Power Level To Which Restricted, if Any (Not MWe):

10. Reasons For Restrictions, if Any (Not MWe): 3 This Month Yr-to-Date . Cumulative

11. Hours in Reporting Period 744.00 2,160.00- 146,113.00 [

12. Number Of Hours Reactor Was Critical 744.00 .2,160.00 92,105.77-

13. Reactor Reserve Shutdown Hours 0.00 0.00 5,532.00 .,

14. Hours Generator On-Line 744.00 2,160.00 = 89,850.90 '

< 15. Unit Reserve Shutc:Jwn Hours .

0.00 0.00 .1,732.50

' 16. Gross Thermal Energy Generated (MWH) 2,054,585 5,974,730 232,070,803 -

17. Gross Electrical Energy Generated (MWH) 690,470 2,009,688 75,081,176 l

18. Not Electrical Energy Generated (MWH) 657,111 1,912,532 70,823,901 *

19. Unit Service Factor 100.00 .100.00 61.49

20. Unit Availability Factor 100.00 100.00 62.68

21. Unit Capacity Factor (Using MDC Net) 101.75 102.01 55.84

22. Unit Capacity Factor (Using DER Net) 97.48 97.73 53.50  ;

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23. Unit Forced Outage Rate 0.00 0.00 19.45

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each)(

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

26. Units in Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICAUTY INITIAL ELECTRICITY ,

COMMERCIAL OPERATION ]

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.: 50-346 -

UNIT NAME: Davis-Besse #1 -

DATE: April 4.1995 Completed by: 'G. M. Wolf Report Month March 1995 - Telephone: (419)321 %114 4

m

% $ Licensee .- Cause & Corrective 8? "e E 'o k 'ii g g ] .Egy M Event gU g $ =j .

g, Action to - "

No. Date B -- x EU 2ti g go E-- o QO

• Report # m 6 Prevent Recurrence Q

No Significant Shutdowns or Power Reductions f

1 2 3 4 F: Forced Reason: Method: Exhibit G - Instructions for Preparation of Data S: Scheduled . A-Equipment Failure (Explain) 1-Manual Entry Sheets for Licensee Event Report (LER)

B-Maintenance or Test- 2-Manual Scram File (NUREG-0161)

. C-Refueling 3-Automatic Scram

.D-Regulatory Restriction 4-Continuation from '5 E-Operator Training & License Examination Previous Month Exhibit 1 - Same Source .

F-Administrative 5-Load Reduction

• Report challanges to Power Operated Relief Valves G-Operational Error (Explain) 9-Other (Explain) (PORVs and Pressurizer Code Safety Valves (PCSVs)

H-Other (Explain)

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OPERATIONAL

SUMMARY

March 1995 Reactor power was maintained at approximately 100 percent full power until 0632 hours0.00731 days <br />0.176 hours <br />0.00104 weeks <br />2.40476e-4 months <br /> on March 23,1995, when a rapid power reduction was initiated in response to high vibration on the Main Generator Exciter inboard bearing.

Power was manually reduced to approximately 87 percent full power by 0650 hours0.00752 days <br />0.181 hours <br />0.00107 weeks <br />2.47325e-4 months <br />, and the bearing vibration returned to normal levels. At 0045 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> on March 24, after maintenance was completed and control rod drive exercising and combined intermediate valve testing was conducted, reactor

- power was gradually increased. After a brief pause in power ascension at approximately 92 percent full power from 0213 to 0231 hours0.00267 days <br />0.0642 hours <br />3.819444e-4 weeks <br />8.78955e-5 months <br /> to perform control valve testing, reactor power was gradually increased to approximately 100 percent full power, which was achieved at 0332 hours0.00384 days <br />0.0922 hours <br />5.489418e-4 weeks <br />1.26326e-4 months <br />.

Reactor power was maintained at approximately 100 percent full power for the rest of the month. $.

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