ML19347F397

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Monthly Operating Repts for Apr 1981
ML19347F397
Person / Time
Site: North Anna  Dominion icon.png
Issue date: 05/05/1981
From: Rogers L
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML19347F396 List:
References
NUDOCS 8105190171
Download: ML19347F397 (9)
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Text

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O VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION MONTHLY OPERATING REPORT MONTH APRIL YEAR 1981 APPROVED:

STATION MANAGFJ 8105190 17I l

OPERATING DATA REPORT DOCKET NO. 50-338 DATE 05-05-81 ~~

COMPLETED BY L.L. Rogers TELEPHONE (703) 894-5151 X2510 OPERATING STATUS

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Notes

1. Unit Name: North Anna 1
2. Reporting Period: April 1981 ^
3. Licensed Thermal Power (MWL): 2775
4. Nameplate Rating (Gross NWe): 947
5. Design Electrical Rating (Net NWe): 907
6. Maximum Dependable Capacity (Gross NWe): 898
7. Maximum Dependable Capacity (Net MWe): 850
8. If Changes Occur in Capacity Ratings (Itema No. 3 thru 7) Since Last Report, Give Reasons:

.. N/A

9. Power Level To Which Restricted, If Any (Net NWe): N/A
10. Reasons For Restrictions, If Any: N/A This Month Yr.-to-Date Cumulative
11. Hours In Reporting Period 719 2,819 25,440 __

~12. Number of Hours Reactor Was Critical 589.6 589.6 18,562.7

13. Reactor Reserve Shutdown Hours 2.2 2.2 215.3
14. Hours Generator On-Line 499.6 499.6 18,147.7
15. Unit Reserve Shutdown Hours 0 0 0
16. Gross Thermal Energy Generated (MWH) 1,108,008 1,108,008 45,940,150
17. Gross Electrical Energy Generated (MWH) 362,965 362,965 14,679,877
18. Net Elect rical Energy Generated (MWH) 340,146 340,146 13,825,149
19. Unit Service Factor 69.5 17.4 71.3
20. Unit Availability Factor 69.5 17.4 71.3
21. Unit Capacity Factor (Using MDC Net) 55.7 13.9 63.9
22. Unit Capacity Factor (Using DER Net) 52.2 13.0 59.9
23. Unit Forced Outage Rate 1.4 1.4 5.9
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

N/A

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 CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

e UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-338 UNIT NAME North Anna 1 DATE 05-05-81 REPORT MONTH APRIL COMPLETED BY L. L. ROGERS TELEPHONE (703) 894-5151 X2510 l

No. Date Type Duration Reason Method of Licensee System Component Cause & Corrective (Hours) Shutting Event Code Code Acdon to 3 4 5 Down Reactor Report # Prevent Recurrence Shutdown 80-28 Continues through April 9. Duration 210.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.

81-01 810409 F 3.8 G 3 N/A N/A N/A Reactor trip due to "C" steam generator lo-lo level 81-02 810409 F 3.2 G 3 N/A N/A N/A Reactor trip due to "B" steam generator hi-hi level 81-03 810410 S 2.2 B 2 N/A N/A N/A Perform Overspeed Turbine Trip Test 81-04 810420 S 4.5 B 1 N/A N/A N/A Ramp down to 65% power to repair feedwater pump 81-05 810425 S 18.5 D N/A N/A N/A N/A Reduced power to 30% for chemistry hold 1 2 3 4 F: Forced Reason: Method: Exhibit G - 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-Other (Explain) (NUREG-0161)

E-Operator Training & License Examination F-Administrative G-Operational Error (Explain) 5 H-Other (Explain) Exhibit 1 - Same Source

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-338 UNIT NA-1 DATE 05-05-81 COMPLETED BY L.L. Rogers TELEPHONE 703-894-5151X2510 NONTH ,. April DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 0 17 830 2 0 18 842 3 0 19 852 4 0 20 790 5 0 21 857 6 0 22 862 7 0 23 867 8 0 24 867 9 2 25 828 10 192 26 596 11 222 27 863 12 235 28 851 13 239 29 857 14 323 30 858 15 613 31 16 753 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.

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Page 1 of 1 UNIT SHUTDOWN AND POWER REDUCTIONS EXPLANATION SHEET DOCKET NO. 50-338 REPORT MONTH APRIL UNIT NAME NA-1 YEAR 1981 7 ATE 05-05-81 COMPLETED BY L. L. ROGERS 81-01 (G) (3) Reactor trip / turbine trip due to "C" steam generator lo-lo level while attempting to bring unit on the line.

81-02 (G) (3) Reactor trip / turbine trip due to "B" steam generator hi-hi level while attempting to bring unit on the line.

81-03 (B) (2) The unit was manually tripped during performance of the 18 month Overspeed Turbine Trip Test.

81-04 (B) (1) With the unit at 100% a rampdown to 65% power was initiated to repair a vent valve on top of a discharge line for 1-FW-P-1C, a weld failed causing a leak that could not be isolated.

r OPERATING DATA REPORT DOCKET NO. 50-339 DATE 05-05-81 COMPLETED BY L.L. Rogers TELEPHONE (703) 894-5151 X2510 OPERATING STATUS Notes

1. Unit Name: North Anna 2
2. Reporting Period: April 1981
3. Licensed Thermal Power (MWt): 2775
4. Nameplate Rating (Gross MWe): 947
5. Design Electrical Rating (Net 'We):

M 907

6. Maximum Dependable Capacity (Gross NWe): 917
7. Maximum Dependable Capacity (Net MWe): 870
8. If Changes Occur in Capacity Ratings (Items No. 3 thru 7) Since Lact 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 719 2,879 3,311
12. Number of Hours Reactor Was Critical 718.5 2,854.5 3,283.4
13. Reactor Reserve Shutdown Hours 1.5 35.5 315.5
14. Hours Generator On-Line 704.3 2,792.7 3,205.4
15. Unit Reserve Shutdown Hours 0 0 0
16. Gross Thermal Energy Generated (MWH) 1,886,222 7,406,670 8,529,183
17. Gross Electrical Energy Generated (MWH) 606,095 2,407,996 2,776,427
18. Net Electrical Energy Generated (MWH) 573,581 2,275,481 2,625,125
19. Unit Service Factor 98.0 97.0 96.3
20. Unit Availability Factor 98.0 97.0 96.8
21. Unit Capacity Factor (Using MDC Net) 91.7 90.8 91.1
22. Unit Capacity Factor (Using DER Net) 88.0 87.1 87.4
23. Unit' Yorced Outage Rate 2.0 3.0 3.2
24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

May 8-23, 1981 - Maintenance

25. If Shut Down At End Of Report Period, Estimated Date of Startup: N/A
26. Units In Test Status (Prior to Ccimercial Operation):

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

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l AVERACI DAILY UNIT POWER LEVEL DOCKET NO. 50-339 UNIT NA-2 DATE 05-05-81 COMPLETED BY L.L. Rogers TELEPHONE 703-894-5151X2510 MONTH April DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 846 17 858 2 633 18 856 3 80 19 859 4 323 20 856 5 838 21 859 6 845 22 852 7 845 23 846 8 849 24 844 9 I;49 25 846 10 847 26 849 11 837 27 852 12 846 28 852 13 848 29 849 14 848 30 823 15 850 31 16 853 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.

i UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-339 UNIT NAME North Anna 2 DATE 05-05-81 3EPOP7 hl:TH APRIL COMPLETED BY L. L. RODGERS TELEPHONE (703) 894-5151 X2510 Type Duration Reason 2 l

No. Date Method of Licensee System Component Cause & Corrective (Hours) Shutting vent Code Code Action to 3 4 5 Down Reactor Report # Prevent Recurrence 81-10 810402 F 14.7 A 1 LER/RO-N1-81-20 EB Z Loss of circulating water for cooling main condenser due to loss of 2G bus.

81-11 810430 S 4.7 F 1 N/A N/A N/A Reduced power to 74% per system operator for load following.

1 2 3 4 F: Forced Reason: Method: Exhibit G - 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-L fueling

  • 3-Automatic Scram Event Report (LER) File D-Regulatory Restriction 4-Other (Explain) (NUREG-0161)

E-Operator Training & License Examination F-Administrative G-Operational Error (Explain)

H-Other (Explain) Exhibit 1 - Same Source I

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Page 1 of 1 UNIT SHUTDOWN AND POWER REDUCTIONS EXPT.ANATION SHEET DOCKET NO. 50-339 REPORT MONTH APRIL UNIT NAME NA-2 YEAR 1981 DATE 05-05-81 COMPLETED BY L. L. ROGERS 81-10 (A) Unit 2 was manually tripped due to loss of circulating water for cooling main condenser due to loss of 2G bus.

The unit was placed in a 200%/ min. ramp down which was terminated with a manual turbine and reactor trip when the control room condenser vacuum indicator showed a decrease.

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