ML19305A894

Monthly Operating Rept for Feb 1980

ML19305A894
Person / Time
Site:	North Anna
Issue date:	03/03/1980
From:	Wil Madison VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML19305A891	List: ML19305A890 ML19305A894
References
NUDOCS 8003180550
Download: ML19305A894 (5)

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VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION MONTHLY OPERATING REPORT MONTH February YEAR 1980 SUBMITTED:

M M'

SUPERINIINDENT - OPERATIONS APPROVED:

/

g$4319f6

OPERATING DATA REPORT DOCKET NO. 50-338 DATE M Pn COMPLETED BY W. R.Marii son TELEPHONE 703-894-5151 Oi8ERATING STATUS i

North Anna, Unit 1 Notes

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1. Unit Name:

February 1980

2. Reporting Period:

.1. Licensed Thermal Power (MWt):

2775 947

4. Nameplate Rating (Gross'MWe):

907

5. Design Electrical Rating (Net MWe):

928

6. Maximum Dependable Capacity (Gross MWe):

898

7. Maximum Dependable Capacity (Net MWe):

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

N/A l

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

N/A

10. Reasons For Restrictions.,1f Any:

e This Month Yr to.Date Cumulative

\\

696 1,440 15,217

11. Hours In Reporting Period 604.5 947 a 11,113.I

12. Number Of Hours Reactor Was Critical 7.0 3/.0

' ~

185.3

13. Reactor Reserve Shutdown Hours

14. Hours Generator On.Line 595.9 7!'.7 10,851.9 o

15. Unit Reserve Shutdown Hours 0

0 0

16. Gros: Thermal Ene gy Generated (MWH) 1,? 0,114 1,896,810 28,176,723 471,315 524,0{9 8,870,428

17. Gross Electrical Energy Generated (MWH)

18. Net Electrical Energy Generated (MWH).

442,506 486,9/4 8,340,420

19. Unit Ser ice Factor 85.6,

55.5 71.3 c

85.6 55.5 71.3

20. Un;t Availability Factor 70.8 37.7 61.0

21. Unit Capacity Factor (Using MDC Net) 70.1 3/.3 '

60.4

22. Unit Capacity Factor (Using DER Net) 14.4 12.0 4.0

23. Unit Forced Outage Rate

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

N/A

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

NC I

l

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

Fc:ecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

("/77) l

AVERAGE DAILY UNIT POWER LEVEL 50-338 DOCKET NO.

/3 80 9

COMPLETED BY W. R. Madison TELEPHONE (703) 894-5151 MONTH February 1980 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net)

I 183 824 37 443 828 2

gg 3

567 19 828 4

738 470 20 0ll 0

5 21 6

810 22 0

7 820 23 0

820 92 g

9

'831 25 302 to 826 26 792 11 818 27 833 12-826 23 834 13 826 29 830 14 832 30 15 827 33 16 828 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.

(9/77)

e 50-338 DOCKET NO.

UNIT SilUIDOWNS AND POWER REDUCTIONS North Anna Unit #1 UNIT NAME DA1E 3/J/6U COMPLETED B'Y A.G.Neufer Feb.

1980 REPORT 4f 0NTII TELEPilONE 70L RQa R151 x 288 O

C P;

.E g i

• O Licensee E e, Cause & Corrective No.

Date g,

3g s

3g5 Event g?

Eb

^ * " " ' "

Prevent Recurrence i-F fE 5

j;gg Report #

wO g

h 8

ii 80-08 800201 F

4.0 G*

3 N/ A N/ A N/ A Feedwater system flow oscillat' ion l *!

set up while testing of "B" steam generator level control system cause i "A" steam generator to go Hi. Reactc tripped from Hi-Hi Level "A" stm.ege 1.

D 80-09 800220 F

93.4 H*

3 N/ A N/ A N/ A High negative flux rate trip all 4 p

)wer range channels. A contract laborer c aught his clothing on the motor breaker fo - the I;

control rod drive motor gen. set caus ing 1

it_to open.

This loss of power to t ie

.i control rods caused them to f all int ) the H

core. As the rod (s) accelerated a neg ative flux rate was set up causing the rea : tor h

trip. A memo'was sent out to all emp loyees to be caref01 around all station equ ipment.

80-10 800224 F

2.7 G*

3 N/ A N/ A

.N/ A Lo-Lo level "B" steam generator. Whi le restarting the unit, operator inexperience.

I

'l.?

I 2

3 4

r F: Forced Reason:

Method:

Exhibit G Instructions l

S: Scheduled A Equipment Failure (Explain),

I Manual for Preparation of Data B. Maintenance of Test 2 ManualScram.

Entry sheets for Licensee C Refueling 3 Automatic Scram.

Event Repuit (LER) File (NUREG-D.Regulatcry Restriction 4-Olher (Explain) 0161)

E-Operator Training A License Examination F-Administrative 5

G-Operstional Errur (Explain)

Exhibit I - Same Source l

(9/77)

Il Other (Explain)

CSee attached sheet.

i i

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UtlIT SHUTDOWN AND POWER REDUCTIONS EXPLANATI0fl SHEET DOCKET NO. 50-338 REPORT MONTH February UNIT NAME North Anna YEAR 1980 DATE 03-03-80 COMPLETED BY A. G. Neufer 80-08 (G)

An instrument technician was working on a reported problem with the "B" steam generator level control system. A feedwater system flow oscillation was set up between steam generators. The reactor subsequently tripped when "A" steam generator water level went Hi-Hi. The reactor operator attempted manual control but could not prevent; the Hi Hit Level.

80-09 (H)

A contract laborer who was assigned to clean up in the vicinity of the reactor trip breakers and control rod drive motor generator control panels got part of his clothing caught on the M-G set motor supply breaker operating switch. While trying to free himself from the switch he inadvertently opened it causing the R negative flux rate trip. At x

the time the standby MG - set was not in service. This trip was initially confirmed by the plant process computer and by actual switch positions on the MG set control panel.

Several days later the man admitted what exactly happened. The reactor was not immediately restarted, however, due to noise in the Reactor Coolant System as determined by the Vibration & Loose Parts Monitoring System. Westinghouse accoustical engineers were called in to analyze the problem. After testing was completed, restart was permitted however, special control rod exercises were ordered on a.once/ week basis until further notice.

80-10 (G)

Difficulty in controlling steam generator water level in. manual while steam flow is constantly increasing.

k D

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