ML20064H505
| ML20064H505 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 11/01/1978 |
| From: | Woods D VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | |
| Shared Package | |
| ML20064H490 | List: |
| References | |
| NUDOCS 7812200257 | |
| Download: ML20064H505 (5) | |
Text
VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION MONTHLY OPERATING REPORT MONTH Oct.
YEAR 1978 (Revised December 5,1978) 1 i
SUBMITTED:
ND
_ r,%
SUPEMuIENDENT - STATION OPERATIONS' APPROVED:
MANAh 7812200257
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OPERATING DATA REPORT 50-338 DOCKET NO.
DATE 33-/-/8 COMPLETED BY D. C. Woods TELEPHONE 7n't AQA 'il51 x 360 OPERATING STATUS North Anna Notes
- l. Unit Name:
October 1978
- 2. Reperdag Period.
- 3. LiesmeadThenmalPower(MWt):
2,775 947
- 4. Namupiste Radng (Gross MWe):
907
- 5. Desips D.carisal Rathag (Not MWe):
928
- 6. Maximusa C,
- Capacity (Gross MWe):
898
- 7. Maximum C.;
": Capacity (Not MWe):
- 8. If Changes Occur in Capacity Ratings (Items Number 3 Tiuoegh 7) Since Last Report, Give Reasons:
N/A
- 9. Power Level To which Restricted,if Any (Net MWe):
N/A
- 10. Renssen For Restrictions,if Amy:
N/A I
~
This Month Yr to.Dete Cumeistne 745 3,553 3,553 I1. Hoers la Repordng Period b/9.4 3.242.1 3.242.1
- 12. Number Of Hours Reacter Was Critical 0
0 0
- 13. Reactor Romerve Shutdown Hours
- 14. Hours Generator On.Une 657.2 3.211.4 L911 a
- 15. Unit Reserve Shutdown No.,.
0 0
o
- 16. Gross Thermal Energy Generated (MWH) 1,750,627 M.826 8.379.R76
- 17. Gross Electncal Energy Generated (MWH) 560,197 2.634.107 2.684.107
- 18. Net Electrical Energy Generated (MWH).
528,766 2.517.863 2.517.863 88.2%
90.4%
90.4%
- 19. Unit Semco Facto,
- 20. Unit Avaanbdity Factor 88.2%
90.4%
90.4%
79.0%
78.9%_
78.9%
- 21. Unit Capacity Factor (Using MDC Net)
- 22. Unit Capacity Factor (Using DER Net) 78 34 7R_1Y 7R 1%
1
- 23. Unit Forced Outage Rate 5.66%
1.5%
1.5%
- 24. Shutdowns Scheduled Over Next 6 Months (Type. Dete.and Durstma of Each):
- 25. If Shut Down At End Of Report Period. Estimated Date of Startup:
- 26. Units In Test Status (Prior ta Comnwrcial Operation):
Forecast Achieved INITIAL CRITICAUTY INITIAL ELECTRICITY 4
COMMERCIAL OPERAT10N M77)
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AVERAGE DAILY UNIT POWER LEVEL f
DOCKET NO.
50-338 UNIT North Anna #1
~
DAM II/7/70
- 0. C. Woods ND BY TELEPHONE 7012894-518i1__ x 360
. youm October DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Nm)
(MWe Nm) 0 844 2
0 is 840 3
- 91 is 834 73 836 4
20 481 832 5
21 750 833 6
22 834 836 7
23 844 634 s
24 837 407 9
25 785 820 to 2,
13 839 27 823-847
!2 23 825 845 831 13 29 840 828 14 3,
844 3
830 15 845 16 INSHUCITONS On this fermat, list the average dady unit power levelin MWe Net for each dayin the reporung month. Compute to the nearest whole rnegawatt.
(9/77) i
DOCKET NO.
UNIT SIIUTDOWNS AND POWER REDUCTIONS UNIT NAME Nntth anna 1 DATE IQY - 1 147A October COMPLETED 8Y
. G. Neufer REPORT MONTil TEl,EPil0NE 703-894-5151 x 229
_3 E
E-3
- E ~>
l_icensee Ee Cause & Corrective No.
Date
(
5 s
3$M
{j Action to Event j[
., 5 g Report #
<a 's Psevent Recurrence H
g 5
78-28 781003 F
12.3 B
4*
Manual Shutdown to repair blown plug on high pressure turbine cross under pipe rewelded returned to power.
78-29 781004 F
11.4 A*
3 High flux rate 2/4 channels caused reactor trip due to fault in a gain pot.
78-30 781024 F
15.7 A*
1 Manual reactor / turbine / generator trir due to a loss of cooling water to "A' reactor coolant pump. Repaired faulty cooling' water valve.
I 2
3 4
F: Forced Reason:
Method:
ExhiblI G - Instructisms 5: Scheduled A-Equipment Failure (Explatn) 1-Manual for Prepasation of Data B-Maintenance of Test 2 Manual Scram.
Entry Sheets for Licensee C Refueling 3 Automatic Scram.
Event ReporI (LER) File (NUREG-D-Regulatory Restricthm 4-Other (Explain) 0161)
E-Operator Training & Ucenx Examinallon F-Administrative 5
i G4)perational Error (Explain)
Exhibit I - Sanw Source l
W/77) 11 Oth-r (Explain)
- See attached sheet.
Pag 2 i or i UNIT SHUTDOWN AND POWER REDUCTIONS EXPLANATION SHEET DOCKET NO. 50-338 REPORT MONTH October UNIT NAME North Anna YEAR 1978 DATE Nov. 1, 1978 COMPLETED BY A. G. Neufer NOTE: Shutdown 78-27 was concluded 10-3-78 at 0023.
48.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.
78-28 (4)
Reactor was not shutdown.
78-29 (A)
While power range nuclear instrumentation channel N-44 was in the trip mode due to maintenance, operator attempted to adjust remaining 3 NIS channels in accordance with calorometric data when adjust knob locking device was released. A voltage spike occurred causing a high flux rate trip in channel N-41.
This made up the 2/4 ccnsequence for automatic reactor trip.
78-30 (A)
The reactor was manually tripped by the operator from 100%
power due to a loss of cooling water to "A" reactor coolant pump. After the Rx was tripped, the reactor coolant pump was shutdown to preclude pump damage. Subsequent to the occurrence, a section of charging and volume control piping was being returned to service. A drain valve was left open while the piping was pressured. The drain valve allowed water to spray in the vicinity of the containment valve g'
penetration area. 1-TV-CC-102E "A" reactor coolant pump component cooling outlet valve was in the area. 1-TV-CC-102-E went closed at about the same time causing low CC flow alarm alerting the operator. Upon inspection of 1-TV-CC102E, electricians found a broken micro switch as well as moisture.
Either problem could have caused the valve to short out and close.
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