ML20078P055

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

ML20078P055
Person / Time
Site:	Davis Besse
Issue date:	11/30/1994
From:	Wolf G, Jeffery Wood TOLEDO EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
KB-94-2025, NUDOCS 9412150232
Download: ML20078P055 (5)

Text

__

m. >-

? ': .

TOLEDO

%ms EDISON

• A Centerior Energy Company LO O 0001 December 14, 1994 KB-94-2025 u

Docket No. 50-346 License No. NPF-3 U.S. Nuclear. Regulatory Commission Document Control Desk Vashington, D.C. 20555 Gentlemen:

l Monthly Operating Report, November, 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 November, 1994.

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

Very truly yours, hd John K. Vood Plant Manager Davis-Besse Nuclear Power Station GMV/dme Enclosures cc L. L. Gundrum NRC Senior Project Manager J. B. Hartin Region III Administrator S. Stasek NRC Senior Resident Inspector, Stop 4030 150081

{g21gggggg&&gg3 yt ,

fI

7.-

AVERAGE DAILY UNIT POWER LEVEL '

DOCKET NO. 50 -0346 UNIT Davis-Besse Unit 1 DATE 12-01 -94 COMPLETED BY Gerry Wolf TELEPHONE 419 -321 - 8114 MONTH NOVEMBER 1994 AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL DAY (MWe-Net) DAY (MWe-Net) 1 0 17 650 2 _

0 18 856 3 0 19 874 4 0 20 873 5 0 21 873 6 0 22 883 7 0 23 884 8 0 24 885 9 0 25 884 10 0 26 884 11 0 27 883 12 0 28 883 13 0 29 830 14 0 30 822 15 92 16 420 c

4 i

- * , , , . -n-e

. OPERATING DATA REPORT DOCKET NO 50-0346 DATE 12-02-94 COMPLETED BY Gerry Wolf TELEPHONE 419 - 321 - 8114 OPERATING STATUS

1. Unit Nams. Davis-Besse Unit 1 Notes

2. Reporting Period NOVEMBER 1994

3. Ucensed Thermal Power (MWt) 2772

4. Nameplate Rating (Grost MWe) 925

5. Design Electrical Rating (Net MWe) 906

6. Maximum Dependable Capacity (Gross MWe) 913

7. Maximum Dependable Capacity (Net MWe) 868

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

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

10. Reasons For Restrictions, If Any (Net MWe): 1 This Month Yr-to-Date Cumulative

,11. Hours in Reporting Period 720.00 8,016.00 143,209.00

12. Number Of Hours Reactor Was Critical 407.47 6,961.32 89,201.77 T3. Reactor Reserve Shutdown Hours 0.00 0.00 5,532.00

14. Hours Generator On-Line 371.17 6,923.17 86,946.90

15. Unit Reserve Shutdown Hours 0.00 0.00 1,732.50

16. Gross Thermal Energy Generated (MWH) 948,689 18,374,368 224,146,137

17. Gross Electrical Energy Generated (MWH) 319,807 6,079,769 72,419,790

18. Net Electrical Energy Generated (MWH) 297,217 5,766,658 68,293,027

19. Unit Service Factor 51.55 86.37 60.71

20. Unit Availability Factor 51.55 86.37 61.92

21. Unit Capacity Factor (Using MDC Net) 47.56 82.88 54.94

22. Unit Capacity Factor (Using DER Net) ~

45.56 79.40 52.64 ,

23. Unit Forced Outage Rate 0.00 0.00 19.97

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

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

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

Forecast Achieved l INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION l

i

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.: 50-346 UNIT NAME: Davis-Besse #1 -

DATE: December 1.1994 Completed by: G. M. Wolf Report Month November 1994 Telephone: (419) 321-8114

~

, gy Licensee y Cause & Corrective

'$. j$ 5 3sj Event jh @8"j Action to No. Date f aS Q O d

$ y 2

g: Report # m

%v v g j Prevent Recurrence Q

9 94-10-01 S 360.7 C 1 N/A N/A N/A Turbine-Generator taken off-line to perform (cont.) scheduled maintenance and refueling outage.

10 94-11-15 S 0.68 B 9 N/A N/A N/A Turbine-Generator taken off-line to perform overspeed trip testing. Reactor power level maintained at 20%.

I1 94-11-29 F N/A B 5 N/A N/A N/A Power reduced to 69 percent to perform repairs on the Main Turbine Load Reference Motor.

I l

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-Cantimmtion from 5

E-Operator Trammg & License Exanunation Previous Month Exhibit 1 - Same Source F-Adnumstrative 5-Load Reduction

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

H-Other (Explain)

a OPERATIONAL

SUMMARY

The Reactor achieved criticality at 0032 hours3.703704e-4 days <br />0.00889 hours <br />5.291005e-5 weeks <br />1.2176e-5 months <br /> on November 14,1994. Reactor power was then slowly increased to approximately 20 percent full power. This power level was maintained while the Main Turbine was synchronized to the grid at 1209 hours0.014 days <br />0.336 hours <br />0.002 weeks <br />4.600245e-4 months <br /> on November 15,1994. At 1640 hours0.019 days <br />0.456 hours <br />0.00271 weeks <br />6.2402e-4 months <br /> on November 15 the Main Turbine was taken off-line to perform overspeed trip testing. Upon completion of the overspeed trip testing, the Main Turbine was re-synchronized to the grH at 1721 hours0.0199 days <br />0.478 hours <br />0.00285 weeks <br />6.548405e-4 months <br /> on November 15. This marked the completion of the Ninth Refueling Outage which began October 1,1994.

Reactor power was slowly increased to approximately 52 percent full power at 1104 hours0.0128 days <br />0.307 hours <br />0.00183 weeks <br />4.20072e-4 months <br /> on November 16,1994. Reactor power was held at 52 percent for reactor physics testing.

When reactor physics testing was complete at 2030 hours0.0235 days <br />0.564 hours <br />0.00336 weeks <br />7.72415e-4 months <br /> on November 16, Reactor power was slowly increased to approximately 73 percent at 0611 hours0.00707 days <br />0.17 hours <br />0.00101 weeks <br />2.324855e-4 months <br /> on November 17, 1994. Reactor power was held at 73 percent for Reactor Protection System (RPS) testing. RPS Testing was complete at 1757 hours0.0203 days <br />0.488 hours <br />0.00291 weeks <br />6.685385e-4 months <br /> on November 17.

Reactor power was slowly increased to approximately 98 percent full power at 0515 hours0.00596 days <br />0.143 hours <br />8.515212e-4 weeks <br />1.959575e-4 months <br /> on November 18,1994. Reactor power level was held at 98 percent for recalibration of the Nuclear Instrumentation. When this recalibration was complete at 0955 hours0.0111 days <br />0.265 hours <br />0.00158 weeks <br />3.633775e-4 months <br /> on November 18, Reactor power was slowly increased to approximately 100 percent power, which v.as attained at 1047 hours0.0121 days <br />0.291 hours <br />0.00173 weeks <br />3.983835e-4 months <br /> on November 13.

Reactor power was decreased from 100 percent to approximately 97 percent full power at 1315 hours0.0152 days <br />0.365 hours <br />0.00217 weeks <br />5.003575e-4 months <br /> on November 29,1994, in response to high vibration on Main Feed Pump Turbine (MFPT) 1. At 1825 hours0.0211 days <br />0.507 hours <br />0.00302 weeks <br />6.944125e-4 months <br /> on November 29, Reactor power was slowly decreased from 97 percent to approximately 68 percent full power to make repairs to the Load Reference Motor. The problems with the Load Reference Motor were found during the power decrease for the MFPT high vibration, and power was reduced as a conservative measure to reduce challenges to equipment should a plant trip occur during repairs. When repairs were complete at 2325 hours0.0269 days <br />0.646 hours <br />0.00384 weeks <br />8.846625e-4 months <br />, power was slowly increased to approximately 97 percent full power, which was achieved at 0515 hours0.00596 days <br />0.143 hours <br />8.515212e-4 weeks <br />1.959575e-4 months <br /> on November 30, 1994. At 1943 hours0.0225 days <br />0.54 hours <br />0.00321 weeks <br />7.393115e-4 months <br /> on November 30, Reactor power was again reduced from 97 percent to approximately 88 percent full power in response to high vibration on MFPT 1.

The cause of the vibration was still under investigation at the end of the month. Reactor power remained at 88 percent full power for the rest of the month.