ML20082C003

Monthly Operating Rept for June 1991 for Davis-Besse Nuclear Power Station

ML20082C003
Person / Time
Site:	Davis Besse
Issue date:	06/30/1991
From:	Sarsour B, Storz L TOLEDO EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
KB91-0564, KB91-564, NUDOCS 9107170259
Download: ML20082C003 (6)

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%m EDISON A Centerof Enc <gy Congey t DISON PLAZA 300 MADISON AVENUE Tolf DO. OH10 43652 0001 July 11, 1991 KB91-0564 Docket No. 50-346 License No NPF-3 U. S. Nuclear Regulatory Commission Document Control Desk

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Vashington, D.C. 20555 Gentlemen:

Monthly Operating Report, June, 1991 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 June, 1991.

If you have any questions, please contact Bilal Sarsour at (419) 321-7384.

Very truly yourse

. W ouis F. Sto-Plant Manage-Davis-Besse Nuclear Power Station -

BMS/tld Enclosures cc: Mr. Paul Byron NRC Resident Inspector Mr. A. Bert Davis Regional Administrator, Region III Mr. J. B. Hopkins NRC Senior Project Manager 9 71~g [>, Q $h 4 y

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, AVER AGE D AILY UNIT POWER LEVEL DOCKET NO. 50-346 UNIT Davis-Besse #1 DATE 1"1v 11 - 1941 CO\lPLETED By Bilal Sarsour TELEPHONE (419)321-7384

%10NT11 June, 1991 DAY AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL IMbe NetI (ywe. Net, 872 872

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2 874 g 871 3 876 gg 871 4 879 66

.0 5 876 sg 867 6 879 877 22 7 875 861 23

! 8 878 24 879 9 875 872 25 ._.

10 873 871 26 11 873 867 27 12 864 2g 872 13 877 866 29 874 866

( 14 30 1

15 864 3g 16 870 l-i INSTRUCTIONS 1

l On this format. list the average daily unit power lesel in MWe Net for each day in 'he reporting month. Gunpute to '

the nearest whole megawatt.

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OPERATING DATA REPORT DOCKET NO 50-346 DATE July 11, 1991 COMPLETED BY Bi"n1 Sarsour-TELEPHONE (4: 9)321- 7384 OPERAllNG Sl ATUS

1. Unit Name: Davis-Besse #1 Notes

2. Reporting Period: June + 1991

3. Licenwd Thermal Power (MWI): 2772

4. Nameplate Rating (Gross MWe): 925

5. Design Electrical Rating (Net MWe): 906

6. %simum Dependable Capacity (Gross MWeg 918

7. Maximum Dependahle Capacity (Net Mbe): 874

- 8. If Changes Occur in Capacity Ratings (items Number 3 Through 7) Since Last Report, Gise Reasons:

9. Power Lesel To which Restricted.lf Any (Net MWe):

' 10. Reasons c or Restnetions. lf Any:

This Month Yr..to-Date Cumulatise

11. Hours in Reporting Period 20.0 4,343.0 113,232

12. Number Of Hours Reactor Was Critical 720.0 4.343.0 61.464.9

13. Reactor Resene Shutdown Hours 0.0 0.0 5,393.7

14. Hours Generator On-Line 720.0 4,343.0 61,412.3

15. Unit Reserve Shutdown Hours 0.0 0.0 1,732.5

16. Gross Thermal Energy Generated (MWH) 1.991.848 11.935,123 150,061,608 17 Gross Electrical Energy Generated (MWH) 659 d7J_ ,,, 3,981,766 49,711,783

18. Net Electrical Energy Generated (MWH) 627,923 3,788,698 46,737,326

19. Unit Senice Factor 100.0 100.0 54.2

20. Unit Asailability Factor 100.0 100.0 55.8

21. Unit Capacity Factor (Using MDC Net) 99.8 99.8 47.2

22. Unit Capacity Factor (Using DER Net) 96.3 96.3 45.6

23. Unit Forced Outage Rate 0.0 0.0 25.9

24. Shutdowns Scheduled Oser Next 6 Months (Type. Date, and Duration of Each t The unit will be shutdown on September 1, 1991, to perform scheduled maintenance and refueling outage.

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

26. Unit $ In Test Status (Prior to Commercial Operation 1: Forecast Achiesed INITIA L CRITICALITY INITIAL ELECTRICITY COMMERCI A L OPER ATION (u/7;;

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. Operational Summary June, 1991 Reactor power was maintained at approximately 100 percent until 1103 hours0.0128 days <br />0.306 hours <br />0.00182 weeks <br />4.196915e-4 months <br /> on June 12,_1991, when reactor-power was reduced to approximately 98 percent due

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to minor deaerator level control problems resulting from shifting-Feedwater Heater 2-6 drain from normal to emergency level centrol.

The reactor was maintained at approximately 98 percent power from 1103 until 2100 hours0.0243 days <br />0.583 hours <br />0.00347 weeks <br />7.9905e-4 months <br /> on June 12, 1991. Reactor power was then slowly increased to approximately 100 percent at 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br /> on June 12,-1991.

Reactor power was maintained at approximately 100 percent until_0230 hours on June.21, 1991, when power was reduced to approximately 95 percent due to the isolation of Feedvater Heater 2-6 normal supply.

At approximately 0416 hours0.00481 days <br />0.116 hours <br />6.878307e-4 weeks <br />1.58288e-4 months <br /> on June 21, 1991, reactor power was increased to approximately_100 percent which was achieved at 0508 hours0.00588 days <br />0.141 hours <br />8.399471e-4 weeks <br />1.93294e-4 months <br /> on-June 21, 1991. .

This power level was maintained until-0105 hours on June 23,-1991,-when'a j manual _ power reduction to approximately 91 percent was initiated to perform turbine valve testing and control rod drive exercise testing. l After= completion of the control rod drive exercise testing, reactor power vas 3 increased to approximately 100 percent which was achieved at 0700 hours0.0081 days <br />0.194 hours <br />0.00116 weeks <br />2.6635e-4 months <br /> on '

June 23, 1991. This power level was maintained for the rest of-the month.

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RETUELING INFORMATION Date: June 1991 i

1. Name of facility: Davis-Besse Unit 1

2. Scheduled date for next refueling outage? September 1991

3. The number of fuel assemblies (a) in the core and (b) in the spent fuel storage pool, and (c) the new fuel storage areas.

{al 177 (b) 328 (c) 0

4. The present licensed spent fuel pool storage capacity and the size of any increase in licensed storage capacity that has been requested or is planned, in number of fuel assemblies.

Present: 735 Increased size by: approximately 900 by 1994 is under reviev

5. The projected date of the last refueling that can be discharged to the spent fuel pool assuming the present licensed capscity.

Date: 1996 - assuming ability to unload the entire core into the spent fuel pool is maintained

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