ML20064E385
| ML20064E385 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 10/31/1978 |
| From: | Woods D VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.) |
| To: | |
| Shared Package | |
| ML20064E384 | List: |
| References | |
| NUDOCS 7811170109 | |
| Download: ML20064E385 (5) | |
Text
l VIRGINIA ELECTRIC AND POWER COMPANY NORTH ANNA POWER STATION MONTHLY OPERATING REPORT MONTH October YEAR 1978 I
SUBMITTED:
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.. SUPERINTENDENT -()TATION OPERATIONS i
APPROVED-i l
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7811170icci
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OPERATLNG DATA REPORT DOCKET NO. 50-338 DATE 11-7-78 COMPLETED BY fi f'
Wnds TELEPHONE 703-894-5151 x 360 OPERATING STATUS North Anna Not'5
- 1. Unit Name:
October 1978
- 2. Reporting Period:
2,775 i
- 3. Licensed Thermal Power (MWt):
- 4. Nameplate Rating (Gross MWe):
94[
90'
- 5. Design Electrical Rating (Net MWe):
928
- 6. Maximum Dependable Capacity (Gross MWe):
898
- 7. Madmum Dependable Capacity (Net MWe):
- 8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7)Since Last Report.Give Reasons:
N/A
- 9. Power Level To Which Restricted.lf Any (Net MWe):
N/A
- 10. Reasons For Restrictions,if Any:
N/A p.
.p This Month Yr. to Date cumulative 745 3,553 3,553
- 11. Hours in Reporting Period 679.4 3,242.1 3,242.1
- 12. Number Of Hours Reactor Was Critical k
- 13. Reactor Reserve Shutdown Hours 0
0 0
657.2 3,211.4 3,211.4
- 14. Hours Generator On-Line 0
0 0
- 15. Unit Reserve Shutdown Hours l
- 16. Gross Therma! Energy Genersted (MWH) 1.750.627 8.379.826 R.379.R76
- 17. Gross Electrical Energy Generated (MWH) 560.197 2.684.107 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 Service Factor 88.2%
90.4%
90.4%
- 20. Unit Availability Facroe 79.1%
78.9%
78.9%
- 21. Unit Capacity Factor (Using MDC Net) 76.5%
76.4%
76.4%
- 22. Unit Capacity Factor (Using DER Net) 5.3%
1.4%
1.4%
i
- 23. Unit Forced Outage Rate
- 24. Shutdowns Scheduled Over Next 6 Months (Type. Date.and Duration of Eacht:
Snubber Inspection. April 1979. I week
- 25. If Shut Down At End Of Repor' ' riod. Estimated Date of Startup:
- 26. Units in Test Status (Prior to Coe mercial Operation);
Forecast Achieved INITIAL CRITICALITY INITIAL El.ECTRICITY COMMERCIAL OPERATION (o/77) 1 l
m,._
AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-338 UNIT # North Anna #1 1 /7/78 om D. C. Woods COMPLE1ID BY 703-894 5151 x 360 TELEPHONE I
MONTH October DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL i
I (MWe Net)
(MWe Net) 0 844 i
,7
.0 840 2
1s 481 834 3
19 73 836 4
20 481 832 i
5 21 750 833 3
834 836 3
s 844 24 634 l
837 407 25 t
785 820 3,
26 839 823 33 3
12 847 28 R25 13 845
- 9 831 840 828 34 3a 044 830 15 31 1
845 16 e
INSTRUCTIONS On this format, list the average dady unit power tevelin MWe-Net for each day in the reporting month. Compute to the nearest whole megnvatt.
l f
i (9/77) 2
'W 9'
o UNIT SilUTDOWNS AND POWER REDUCTIONS g,
io Anna 1 DATE Nov. 1_ 197R COMPLETED BY
_A. C Plcufer_.
REPORT MONTil 0ctober TEt>ErilONE 703-894-5151 -x 229 c
jg "g
}[3a:
Cause & Corretlive
}
Licensee g"3 Action to Event g?
gu i
No.
Date g
3g f,
Prevent Recurrence fI 5
j p, Report #
'n U H
g 6
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
9.0 A*
's 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 trip due to a loss of cooling water to "A" reactor coolant pump. Repaired faulty cooling water valve.
4 1
2 3
4 F: Forced Reason:
Method:
Exhibit G. instructions S: Scheduled A Equipment Failure (Expl In) 1-Manual for Preparation of Data B Maintenance of Test 2 Manual Scram.
Entry Sheets for Licensee C. Refueling
- 3. Automatic Scram.
Event Repost (LER) FileINUREG-D Regulatory Restriction 4-Other (Explain) 0161)
E-Operator Training & License Examination -
F-Administrative 5
G Operational Error (Explain)
Exhibit I. Same Sourge 07/77)
II Other (Explain),
- See attached sheet.
t Paga 1 of 1 UNIT SHUTOOWN AND POWER REDUCTIONS i
EXPLANATION SPEET DOCKET NO. 50-338 REPORT tiONTH UNIT NAME North Anna YEAR 1978 DATE Nov. 1, 1978 COMPLETED BY A. G. Neufer -
NOTE: Shutdcwn 78-27 was concluded 10-3-78 at 0023.
48.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-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 consequence for autor.atic 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 valva was left open while the piping was pressured. The drain valve allowed water to spray in the vicinity of the containment valve 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-CC102-E, electricians found a broken mi.cro switch as well as moisture.
I Either problem could have caused the valve to short out and close.
I I
4
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