ML20039G187

Monthly Operating Repts for Jul 1981

ML20039G187
Person / Time
Site:	North Anna
Issue date:	08/05/1981
From:	Rogers L VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML20039G183	List: ML20039G182 ML20039G187
References
NUDOCS 8201150366
Download: ML20039G187 (8)

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T VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION MONTHLY OPERATING REPORT MONTH JULY YEAR 1981 4

i APPROVED:

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4 STATION }fANAGER

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t 8201150366 810813 PDR ADOCK 05000338 R PDR

T OPERATING DATA REPORT DOCKET NO. 50-338 DATE 08-05-81 COMPLETED BY L.L. Rogers TELEPHONE (703) 894-5151 X2510 OPERATING STATUS Notes

1. Unit Name: North Anna 1

2. Reporting Period: July 1981

3. Licensed Thermal Power (MWt): 2775

4. Nameplate Rating (Gross MWe): 947

5. Design Electrical Rating (Net MWe): 907

6. Maximum Dependable Capacity (Gross MWe): 915

7. Maximum Dependable Capacity (Net MWe): 865

8. If Changes Occur in Capacity Ratings (Items No. 3 thru 7) Since Last Report, Give Reasons:

N/A

9. Power Level To Which Restricted, If Any (Net MWe): N/A

10. Reasons For Restrictions, If Any: N/A This Month Yr.-to-Date Cumulative

11. Hours In Reporting Period 744 5,087 27,648

12. Number of Hours Reactor Was Critical 737.4 2,789.4 20,762.5

13. Reactor Reserve Shutdown Hours 1 4.8 217.9

14. Hours Generator On-Line 728.1 __2,681.4 20,329.5

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 1,957,605 7,059,205 52,227,908

17. Gross Electrical Energy Generated (MWH) 634,730 2,310,580 16,645,492

18. Net Electrical Energy Generated (MWH) 598,636 2,180,715 15,665,718 .

l 19. Unit Service Factor 97.9 52.7 73.5

20. Unit Availability Factor 97.9 52.7 73.5

21. Unit Capacity Factor (Using MDC Net) 93.0 49.6 65.5

22. Unit Capacity Factor (Using DER Net) 88.7 47.3 62.4 l 23. Unit Forced Outage Rate 2.1 .

1.2 5.4

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

Fall Maintenance 02-81 thru 10-16-81

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

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

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

AVERAGE DAILY UNIT POWER LEVEL DOCKET No. 50-338 UNIT NA-1 DATE 08-05-81 COMPLETED BY L.L. Roge'rs TELEPHONE 703-894-5151X251T MONTH July DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 856 17 845 2 850 18 847 3 530 19 _

847 4 850 20 847 5 854 21 848 6 855 22 847 1

7 857 23 850 8 855 24 851 9 856 25 851

• 10 499 26 850 11 851 27 850 i

12 490 28 850 13 469 29 851 14 843 30 851 __

15 847 31 852 16 846 INSTRUCTIONS 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.

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-338 UNIT NAME North Anna 1 DATE 08-05-81 REPORT MONTH JULY COMPLETED BY L. L. ROGERS TELEPHONE (703) 894-5151 X2510 1 2 Ns. Date Type Duration Reason Method of Licensee System Component Cause & Corrective (Hours) Shutting 3

• 4 Code Action to 5

Down Reactor Report # Prevent Recurrence 81-08 810703 F 15 F 5 N/A N/A N/A Reduced power to 30% due to fire on Unit 2 "B" Main Transformer.

81-09 810710 F 7.3 A 3 N/A N/A N/A Turbine trip / reactor trip

due to diaphragm failure l in bearing lube oil trip j on trip block. Installed

new diaphragm in turbine trip block

, 81-10 810712 F 8.6 B 3 N/A N/A N/A Reactor trip / turbine trip due to "A" bypass breaker l failure during performance of 1-PT-36.1.

i 2 1 3 4 F: Forced Reason: Method: Exhibit F - Instructions 1

S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram. Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continuations (NUREG-0161)

E-Operator Training & License Examination 5-Load Reduction F-Administrative. 6-Other 5

G-Operational Error (Explain)

H-Other (Explain) Exhibit 4 - Same Source

Page 1 of 1 UNIT SHUrDOWN AND P0kTR REDUCTIONS EXPLANATION SHEET DOCKET NO. _ ,,50-338 REPORT MONTH JULY UNIT NAME NA-1 YEAR 1981 DATE 08-05-81 COMPLETED BY L. L. ROGERS 81-09 (A) (3) Turbine trip / reactor trip due to diaphragm failure in bearing lube oil trip on trip block.

OPERATING DATA REPORT DOCKET NO. 50-339 DATE 08-05-81 COMPLETED BY L.L. Rogers __

TELEPHONE (703) 394-5151 X2510,

, l OPERATING STATUS Notes Line 16 yr-to-date and

1. Unit Name: North Anna 2 cumulative have been adjusted

2. Reporting Period: ___ July 1981 for burnup over estimation .

3. Licensed Thermal Power (MWt): 2775 from beginning of cycle 1

4. Nameplate Rating (Gross NWe): 947 through April 30, 1981.

5. Design Electrical Rating (Net MWe): _ 907

6. Maximum Dependable capacity (Gross MWe): 938

7. Maximum Dependable Capacity (Net MWe): 890

8. If Changes Occur in Capacity Ratings (Items No 3 thru 7) Since Last Report, Give Reasons:

N/A

9. Power Level To Which Restricted, If Any (Net MWe): N/A

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

l l

This Month Yr.-to-Date Cumulative i

. 11. Hours In Reporting Period 744 5,087 5,519 I

12. Number of Hours Reactor Was Critical 14.1 3,779.2 4,208.1

13. Reactor Reserve Shutdown Hours 744 1,054.8 1,334.8

14. Hours Generator On-Line 0 3,692 4,104.7

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 311 9,540,212 10,627,209 j

17. Gross Electrical Energy Generated (MWH) 0 3,216,123 3,584,554  ;

l 18. Net Electrical Energy Generated (MWH) 0 3,041,481 3,391,125 _ l l 19. Unit Service Factor 0 72.6 74.4 72.6 74.4

20. Unit Availability Factor 0

21. Unit Capacity Factor (Using MDC Net) 0 67.2 69.0 l l 22. Unit Capacity Factor (Using DER Net) 0 65.9 67.7 l

23. Unit Forced Outage Rate 100 23.1 21.6

24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each): l Fall Maintenance 16-81 thru 10-30 !

25. If Shut Down At End Of Report Period, Estimated Date of Startup: 08-10-81

26. Units In Test Status (Prior to Commercial Operation): l Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY

! ' COMMERCIAL OPERATION 1

1

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-339 UNIT NA-2 DATE 08-05-81 COMPLETED BY L.L. Rogers TELEPHONE 703-894-515iX2510, MONTH July DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 0 17 0 2 0 18 0 3 0 19 0 4 0 20 0 5 0 21 0 6 0 22 0 7 0 23 0 8 0 24 0 9 0 25 0 10 0 26 0 11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0 INSTRUCTIONS 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.

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-339 '

UNIT NAME North Anna 2 DATE 08-05-81 REPORT MONTH JULY CONPLETED BY L. L. H0GERS TELEPHONE (703) 894-5151 X2510 2 Cause & Corrective No. Date Typel Duration Reason Method of Licer.see System Component (Hours) Shutting ven Code 4

Code 5

^*""

3 Prevent Recurrence Down Reactor Report #

81-19 810619 F 85, t/ A 4 N/A N/A N/A Continuation of "C" Main i

Transformer Failure Outage 81-20 810703 F f g g,f A 3 Reactor trip due to failure l of "B" Main Transformer. While attempting to return unit to service on 7-25-61 "C" Main Transformer failed. The cause of the transformer failure is unknown at this time, an investigation is pending.

I 2 3 4 F: Forced Reason: Method: Exhibit F - Instructions S: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance or Test 2-Manual Scram. Entry Sheets for Licensee C-Refueling 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Continuations (NUREG-0161)

E-Operator Training & License Examination 5-Load Reduction F-Administrative 6-Other 5 G-Operational Error (Explain)

_H-Other (Explain) Exhibit H - Same Source h

Page 1 of 1 UNIT SHUTDOkW AhD P0k'ER REDUCTIONS EXPLANATION SHEET DOCKET NO. 50-339 REPORT MONTH JULY UNIT NAME NA-2 YEAR 1981 DATE 08-05-81 COMPLETED BY L. L. ROGERS 81-20 (A) (3) Turbine trip / reactor trip due to fire on "B" Main Transformer as a result of transformer failure.

k'hile attempting to return the unit to service, on 07-25-81, with the Unit on backfeed, "C" Main Transformer failed. The transformers have been replaced. An investigation into the cause of the failures is in progress.

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