ML19347C011

Monthly Operating Repts for Sept 1980

ML19347C011
Person / Time
Site:	North Anna
Issue date:	10/02/1980
From:	Woodsmall W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML19347C010	List: ML19347C009 ML19347C011
References
NUDOCS 8010160458
Download: ML19347C011 (8)

Text

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i VIRGINIA ELECTRIC AND POWER COMPANY t

NORTH ANNA POWER STATION

$ MONTHLY OPERATING REPORT 1

j MONTH SentemberYEAR Jggo 1

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i OPERATING DATA REPORT DOCKET NO.

- 0 DATE IU/d/DU COMPl.ETED BY W._A. Woodsmall, II I TELEPilONE 703/894-5151 i OPERATING STATUS North Anna 1 Notes

1. Unit Name:

2. Reporting Period: Sontorhor 1490

3. Licensed Thermal Power (MWt): 2775

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l 4. Nameplate Rating (Gross MWe): 947 l 5. Design Electrical Rating (Net MWe): 907

6. Maximum Dependable Capacity (Gross MWe): 880

7. Maximum Dependable Capacity (Net MWe): 850 1

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since I.ast Report, Give Reasons:

N/A 3 9. Power Level To Which Restricted,1f Any (Net MWe): N/A

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

i This Month Yr..to.Date Cumulative

. I1. Ilours In Reporting Period 720 6.575 20.352

12. Number Of Hours Reactor Was Critical 713.9 5,693.7 15.858.9

13. Reactor Reserve Shutdown Hours 6.1 61.2 210.0

' 71 3.4 5,494.1 15,547.3

14. Hours Generator On.Line

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 1,887,261 14.045.342 40.325.255

17. Gross Electrical Energy Generated (MWH) 605,270 , _ ,

4.411.668 12.758.017

18. Net Electrical Energy Generated (MWH) 570.28d 4.147 69R 12 nn1 laa

19. Unit Service Factor 99.2 86.6 77.9

20. Unit Availability Factor 99.2 86.6 77.9

21. Unit Capacity Factor iUsing MDC Net) 93.2 74.2 69_4 l

22. Unit Capacity Factor (Using DER Net) 87.3 69.5 65.0

23. Unit Forced Outage Rate 4 9.I 6.5 l

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

Refuelina - December 31. 1980: six weeks

25. If Shut Down At End Of Report Period. Estimated Date of Startup: M/4

26. Units in Test Status (Prior to Commercial Operation): Forecast Achiesed INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION N/77 i

DOCKET NO.80-338 UNIT SilUTDOWNS AND POWER REDUCTIONS UNIT NAME . North Anna 1 DATE 1m_7.nn COMPLETED BY A ~. G . Neu fe r REPORT MONTil 90pte'"ber 1980 TELEPilONE (703) 894-5151

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--, jg 3 $ Y3 Licensee ,E-t, f, cause & Corrective No. Date i Eg @ js5 Event 3,7 gu? Action to H fg @ g g, Report er mo g Prevent Recurrence 6

80-21 800908 F 2.4 A* 3 80-80/03L-0 EB Genera Reactor Trip from Turbine Trip caused by "C" S/G Lo Lo Level when the output ,

breaker from inverter opened causing a loss of power to Vital Bus IV. Checke l fuses, grounds and reclosed output breaker from inverter.

80-22 800908 F 0.0 H* 3 N/A N/A N/A Hi Hi Level "C" S/G over filled during unit startup.

80-23 800930 F 0.1 A* 3 N/A N/A N/A Reactor Trip from Turbine Trip when 6th point heater level went above the high level trip point due to a tube failure.

Plugged affected tubes.

I 2 3 4 F: Forced Reason: Method: Exhibit G - Instructisms S: Scheduled A Equipment Failure (Explain) I-Manual for Preparation of,ata B-Maintenance of Test 2-M.rnual Scram. Entr> Sheets foi Nensee C-Refueling 3 Aufomatic Scram. Event Report (L ') File tNURI:G-D-Regulatory Restriction 4-Other (Explain) 0161)

E Operator Training & License Exeninar;on F Administrative 5 G-Operational Error (Explain) Exhibit I Same Source 19/77) Il-Other (Explain)

• See attached sheet.

4 Note 8-23 will be continued into month of October.

Page 1 of 1 UNIT SHUTDOWN AND POWER REDUCTIONS EXPLANATION SHEET DOCKET NO.80-338 REPORT MONTH Sept. UNIT NAME N. ANNA 1 YEAR 1980 DATE 10-7-80 COMPLETED BY 894-5151 ext. 221 1

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l 80-21 (A) When Vital Bus IV lost power, due to the inverter breaker l opening, the control for "A" S/G failed open. This diverted feed flow from "B" and "C" S/G's. "C" S/G Level went to the Lo Lo Level Reactor Trip Set Point before the "A" S/G Hi Level turbine trip could be actuated.

80-22 (H) S/G Level Control was in manual during the startup.

80-23 (A) A suspected tube failure in the 6B feedwater heater had occurred requiring removal of the heater from service.

When cooling water was valved out, the wat.cr volume in the shell side expanded, causing a high level automatic furbine Trip.

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4 OPERATING DATA REPORT DOCKET NO. 50-339 i DATE 10/7/R0

! COMPLETED BY W. A. Woodsmall, IIH TELEPHONE 703/894/5151 OPERA flNG STATUS North Anna 2 N*t**

1. Unit Name:

2. Reporting Period: Sentorher 19R0 1

3. Licensed Thermal Power (MWt): 2775

4. Nameplate Rating (Gross MWe): 947

5. Design Electric'al Rating (Net MWe): 907 I 6. Maximum Dependable Capacity (Gross MWe): 928

7. Maximum Dependable Capacity (Net MWe): ROR

8. If Changes Occurin Capacity Ratings (Items Number 3 Through 7)Since Last Report. Gise Reasons:

s N/A

9. Power Level To which Restricted,if Any (Net MWe): M /o f M/A

10. Reasons For Restrictions,if Any:

i This Month Yr..to.Da te Cumulatise i1. Hours In Reporting Period 720 2.928 2.928

12. Number Of Hours Reactor Was Critical 476.8 1.213.2 1,213.2

13. Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On.Line 461.5 516.5 516.5

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy Generated (MWH) 615.501 659.318 659.318

17. Gross Electrical Energy Generated (MWH) 193,846 _,

202.020 202.020

18. Net Electrical Energy Generated (MWH) 177.547 184_109 1R4;109 i 19. Unit Service Factor N/A N/A N/A l 20. Unit Availability Factor N/A N/A N/A

21. Unit Capacity Factor (Using MDC Net) N/A N/A N/A

22. Unit Capacity Factor (Using DER Net) N/A N/A N/A

23. Unit Forced Outage Rate N/A N/A N/A j 24. Shutdowns Scheduled Over Next 6 Months (Type. Date,and Duration of Eachi:

TMI and Fire Protection Modifications: November 1. 1980: 21 davs Maintonanrn- Anril 3. 14R1r 11 etaye

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 Achiesed INITIAL CRITICA LITY 6/12/80 INITIA L ELECTRICITY R/25/R0 COMMERCIAL OPER ATION 11 /2?/80 to/Th

4 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-339 UNIT NA 2 DAir 10/2/80 COMPLETED By W. A. Woodsmall, III TELEPHONE 703/894-5151 MONTH Seotember DAY AVERAGE D I Y POW R LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe Net) 1 0 37 380

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2 0 33 414 0 403 3

4 0 20 _

420 5 0 21 358 6 0 33 491 D 665 .

7 23 8 0 24 662 9 0 25 667 10 127 26 453 174 31 11 27 12 1A7 2s 113 181 ,

356 13 14 254 526 30 15 306 3, 16 230 INSTRUCTIONS On this format. list the average daily unit power levelin MWe Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77)

UNIT Sif0TDOWNS AND POWER REDUCTIONS DOCKETNO. 50-339 UNIT NAME N. Anna 2 DATE 10-8-80 COMPLETED fly A. G. Neufer REPORT MONTil Son t ornh a" 1980 TELFPIIONE 894-5151 ext. 221

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- jg 3 $ $] l.icensee ,En, $'%

Cause & Corrective No. Dale i 5g y

4 .s s 5 Event p g'S u

Atti"" I" H gg g Report it vi U g Present Recurrence 6

concluded 80-04 80-091n F 225.0 S E E A U G U ! T R E P 0 R T 80-05 800916 F 3.5 A* 3 NA NA NA Reactor trip / turbine trip due to low vacuum. Vacuum was lost while removi ig cover tc condensate pump suction strainer for cleaning because a valve to the strainer was not fully closed.

Valve and condensate suction strainer were cleaned.

80-06 800926 F 4.0 A* 3 NA NA NA Feedwater pumps tripped tripping the reactor. Cleaned Pump Suction Straine rs, 80-07 809927 S 20.6 3 B NA NA NA 50% test reactor trip per 2-5U-26 I 2 3 4 F: Forced Reason: Method: Exhibit G -Instructions S: Schedufed A Equipment Failure (Explain) 1-Manual for Preparation of Data B-Maintenance of Test 2 Manual Scram. Entry Sheets for 1.icensee C-Refueling 3- Automatic Scram. Event Repos (1.ER) File (NURI'G.

D-Regulatory Restriction 4-Other (Explain) 01611 E-Operator Tiaining A 1.icense Examination F Administrative 5 G-Operational Error (Explain) Exhibit I - Same Source 19/77) Il-Other (Explain)

• See attached sheet

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UNIT SHUTDOWN AND POWER REDUCTIONS EXPLANATION SHEET DOCKET NO. 50339 REPORT MONTH _ September UNIT NAME N. Anna 2 YEAR 1980 DATE 10-80

, COMPLETED BY A. G. Neufer (703) 894-5151 ext. 221 80-05 A While in the process of cleaning a condensate pump suction strainer one of the strainer valves'was not fully shut oue to debris under the valve seat. This caused a low vacuum condition tripping the turbine resulting in a reactor trip.

80-06 A While in new plant start-up condition, much rust and particulate is washing from secondary piping and accumulating in startup condensate pump suction strainers.

Unit 2 continues with startup power testing with commercial operations l scheduled for late November.

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