ML20073B416

Monthly Operating Rept for Aug 1994 for Davis-Besse Nuclear Power Station Unit 1

ML20073B416
Person / Time
Site:	Davis Besse
Issue date:	08/31/1994
From:	Wolf G, Jeffery Wood TOLEDO EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
KB-94-1565, NUDOCS 9409210348
Download: ML20073B416 (6)

Text

.

f TOLEDO EDISON A Centerior Energy Company l

D N AVENUE TOLEDO, OHIO 436520001 September 14, 1994 KB-94-1565 Docket No. 50-346 License No. NPF-3 U.S. Nuclear Regulatory Commission Document Control Desk Vashington, D.C.

20555 Gentlemen:

Monthly Operating Report, August 1994 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 August 1994. The July Operating Data Report is included due to a correction in the Unit Forced Outage Rate.

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

Very truly yours, J/)

ok Jo K. Wood Plant Manager Davis-Besse Nuclear Power Station GHV/dmc Enclosures cc:

L. L. Gundrum NRC Senior Project Manager J. B. Martin Region III-Administrator S. Stasek NRC Senior Resident Inspector, Stop 4030 o

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9409210348 940831 PDR ADDCK 05000346 o

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AVERAGE DAILY UNIT POWER LEVEL 1

i DOCKET NO. 50 -0346 UNIT Davis-Besse Unit 1 DATE 09 94 COMPLETED BY GERRY M. WOLF TELEPHONE 419 -321 -8114 MONTH AUGUST 1994 AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL DAY (MWe-Net)

DAY (MWe-Net) 1 865 17 848 2

865 18 841 3

857 19 837

,7 4

855 20 816 5

864 21 799 6

867 22 800 7

865 23 802 8

862 24 795 9

866 25

'781 10 869 26 781 11 869 27 767 12 864 28 760 13 861 29 746 5

14 861 30 738 15 871 31 737 16 868 l

OPERATING DATA REPORT DOCKET NO 50-0346 DATE 09-02-94 COMPLETED BY Gerry Wolf TELEPHONE 419 -321 -8114 OPERATING STATUS j

1. Unit Name: Davis-Besse Unit 1 Notes

2. Reporting Period AUGUST,1994

3. UcensedThermalPower(MWt) 2772

4. Nameplate Rating (Gross MWe) 925

5. Design ElectricalRating (Net MWe) 906

6. Maximum Dependable Capacity (Gross MWe) 913

7. Maximum DependableCapacity (Net MWe) 868

8. If Changes Occurin CapacityRatings (Items number 3 through 7) since last report, give reasons:

9. Power LevelTo Which Restricted,if Any (Net MWe):

10. Reasons For Restrictions, if Any (Net MWe):

This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 744.00 5,831.00 141,024.00

12. Number Of Hours Reactor Was Critical 744.00 5,831.00 88,071.45

13. Reactor Reserve Shutdown Hours 0.00 0.00 5,532.00

14. Hours Generator On-Line 744.00 5,831.00 85,854.73

15. Unit Reserve Shutdown Hours 0.00 0.00 1,732.50

16. Gross Thermal Energy Generated (MWH) 1,972,555 16,020,608 221,792,377

17. Gross Electrical Energy Generated (MWH) 649,291 5,297,379 71,637,400

18. Net Electrical Energy Generated (MWH) 616,243 5,035,874 67,562,244

19. Unit Service Factor 100.00 100.00 60.88 i

20. Unit Availability Factor 100.00 100.00 62.11

21. Unit Capacity Factor (Using MDC Net) 95.42 99.50 55.19

22. Unit Capacity Factor (Using DER Net) 91.42 95.32 52.88

23. Unit Forced Outage Rate 0.00 0.00 20.17

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

Scheduled maintenance and refueling outage - October 1,1994.

Planned duration - 46 days.

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

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

Forecast Achieved INITIALCRITICALITY INITIAL ELECTRICIW COMMERCIALOPERATION 4

OPERATING DATAREPORT DOCKET NO 50 -0346 DATE 8-2-94 COMPLETEDBY GERRYWOLF TELEPHONE 419 -321 -8114 OPERATING STATUS

1. Unit Name: Davis-Besse Unit 1 Notes

2. Reporting Period JULY,1994

3. UcensedThermalPower(MWt) 2772

4. Nameplate Rating (Gross MWe) 925

5. Design ElectricalRating (Net MWe) 906

6. Maximum DependableCapacity (Gross MWe) 913

7. Maximum DependableCapacity (Net MWe) 868

8. If Changes Occurin CapacityRatings (items number 3 through 7) since last report, give reasons:

9. Power LevelTo Which Restricted,if Any (Net MWe):

10. Reasons For Restrictions, If Any (Net MWe):

4?

This Month Yr-to-Date Cumulative 1

11. Hours in Reporting Period 744.00 5,087.00 140,280.00

12. Number Of Hours Reactor Was Critical 744.00 5,087.00 87,327.45

13. Reactor Reserve Shutdown Hours 0.00 0.00 5,532.00

14. Hours GeneratorOn-Une 744.00 5,087.00 85,110.73

15. Unit Reserve Shutdc#n Hours 0.00 0.00 1,732.50

16. Gross Thermal Energy Generated (MWH) 2,035,092 14,048,052 219,819,821

17. Gross Electrical Energy Generated (MWH) 667,491 4,648,088 70,988,109

18. Net Electrical Energy Generated (MWH) 634,201 4,419,631 66,946,001

19. Unit Service Factor 100.00 100.00 60.67

20. Unit Availability Factor 100.00 100.00 61.91

21. Unit Capacity Factor (Using MDC Net) 98.21 100.09 54.98

22. Unit Capacity Factor (Using DER Net) 94.09 95.90 52.67

23. Unit Forced Outage Rate 0.00 0.00 20.32 l

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

Scheduled maintenance and refueling outage - October 1,1994.

Planned duration - 49 days.

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

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

Forecast Achieved INITIALCRITICALITY INITIAL ELECTRICITY COMMERCIALOPERATiON i

i

6

.j 4 UNIT SHUTD0VNS AND POVER REDUCTIONS.-

DOCKET NO.:

50-346

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, UNIT NUfE:

Davis-Besse il 1.,*

c h DATE:

September 7, 1994 Ifii@

Completed by:

G. M. Wolf Report Month August 1994 Telephone:

(419)321 8114

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Prevent Recurrence 2 di j 6

No Significant Shutdowns or Power Reductions 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 (12:R)

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

C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Continuation from E-Operator Training & License Examination Previous Month

' Exhibit I - Same Source F-Administrative 5-Ioad Reduction

• Report challenges to Power Operated Relief Valves G-Operational Error (Explain)'

9-other (Explain)

-(PoEVs) and Pressuriser Code Safety valves (PCSVs)

H-Other (Explain)

~

e OPERATIONAL

SUMMARY

Reactor power was maintained at approximately 100 percent full power until 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> on August 14,1994, when a manual power reduction was initiated to perform control rod dnve exercising, control valve testing, and combined intermediate valve testing.

Power was reduced to approximately 92 percent, at which point the testing was performed. After testing completion, at 0243 hours0.00281 days <br />0.0675 hours <br />4.017857e-4 weeks <br />9.24615e-5 months <br />, reactor power was gradually mcreased to approximately 100 percent full power, which was achieved at 0425 hours0.00492 days <br />0.118 hours <br />7.027116e-4 weeks <br />1.617125e-4 months <br />.

Reactor power was maintained at this level until August 17,1994, when at 0805 hours0.00932 days <br />0.224 hours <br />0.00133 weeks <br />3.063025e-4 months <br />, a manual power reduction was initiated to perform control rod drive testing. Power was reduced to approximately 99 percent full power, at which point the testing was performed. After testing completion, full power to start the operating cycle nineat 1044 ho coastdown. pproximately 97 percentA coastdown is performed to ensure maximum effic reduced to a before shutdown for scheduled maintenance and refueling activities. y and fuel depletion Power continued to be manually reduced at the approximate rate of three percent every three days for the rest of the month in accordance with the coastdown schedule:

Date TiEe Power Historv 8/20/94 0330 Commenced load reduction from 97 percent full power 8/20/94 0414 Completed power reduction to approximately 94 percent full power 8/20/94 2159 Commenced load reduction from 94 percent full power 8/20/94 2216 Completed power reduction to approximately 92 percent full power 8/24/94 2340 Commenced load reduction from 92 percent full power 8/25/94 0018 Completed power reduction to approximately 90 percent full power 8/27/94 0437 Commenced load reduction from 90 percent full power 8/27/94 0523 Completed power reduction to approximately 88 percent full power 8/29/94 0551 Commenced load reduction from 88 percent full power 8/29/94 0628 Completed power reduction to approximately 85 percent full power