ML20066G673
| ML20066G673 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 01/31/1991 |
| From: | Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| VYV-91-026, VYV-91-26, NUDOCS 9102200013 | |
| Download: ML20066G673 (6) | |
Text
,
w YERhiONT YANKEE NUCLEAR POWER CORPOR ATION P. O. BOX 157 GOVERNOR IIUNT ROAD VERNON, VERMONT 05354 February 10, 1991 VYV 91-026 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.
20555 DeTr Sir:
Submitted herewith is the Monthly Stctistical deport for the Vermont Yankee Nuclear Power Station for the month of January, 1991.
Very truly yours, l
VERMONT YANKEE NUCLEAR POWER CORP.
cW
"')! )
Warren P.
Mu hy
(/
Senior Vice resident, Operations cc:
[
1f PDP ADOCK O*000271 2t R
/f l
i l
VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 91-01 FOR.THE MONTH OF JANUARY, 1991 l
DP 0411 Rev. 3 Page 1 of 1
OPERATING DATA REPORT
[
DOCKET NO.
50-271 DATE 910210 COMPLETED BY UTA. Wallin TELEPHONE (802)257-7711.
OPERATING STATUS 1.-
Unit Name:
Vermont Yankee NOTES:
2.
Reporting Period:
January _
3.
Licensed Thermal Power (MWt):
1593 4.
Nameplate Rating (Gross MWe):
540 5.
Design Electrical Rating (Net MWe): 514(oc) 504(cc) 6.
Maximum Dependable Capacity (Gross MWe):-535
'7.
Maximum Dependable Capacity (Net MWe):
'504-8.
If changes occur in capacity ratings (Items Number 3 through 7)since last report, give reasons:
N/A 9.
Power level to which restricted, 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 744.00 -
744.00 159264.00 12.
Number Of Hours Reactor was Critical
'744.00 744 00 128932.63 13.
Reactor Reserve Shutdown Hours-0.00 0.00 0.00 14.
Hours Generator On-Line 744.00 744.00 126115.60 15.
Unit Reserve Shutdown Hours 0.00 0.00 0.00 16.
Gross Thermal Energy Generated (MWH)1158937.50 1158937.50 186474242.50 17.
Gross Electrical Energy Generated 390987.00 390987.00. _62138482.00 18.
Net Electrical Energy _ Generated (MWH)375133.00-375133.00 59007103.00
- 19.
Unit Service Factor 100.00-100.00--
78.35 H
20.
Unit Availability Factor 100.00
-100.00 78.35
- 21. ' Unit Capacity Factor (Using MDC Net) 100.04 100.04 72.73 22.
Unit Capacity Factor (Using DER Net) 98.10 98.10 71.32 L 23.
Unit Forced Outage Rate 0.00 0.00 5.49
-24.
Shutdowns scheduled over next 6 months (Type, Date, and-Duration-of Each): N/A l
25.
If shut down at end of report period,. estimated date of startup: N/A-26.
Units In Test Status (prior to commercial operation): N/A Forecast Achieved INITIAL. CRITICALITY INITIAL ELECTRICITY i
COMMERCIAL OPERATION VYDPF 0411.01
'DP 0411 Rev. 3 Page 1 of 1 RT No. 13.F01.19F
a q
l AVERAGE DAILY-UNIT-POWERLLEVEL-
- DOCKET NO.:50-271 q
UNIT ' Vermont Yankee.
D
-j DATE '910210
-COMPLETED BY' G.A. Wallin TELEPHONE (802)257-7711 MONTH
' January; 1
1 DAY AVERAGE DAILY POWER LEVEL DAY-' AVERAGE DAILY POWER LEVEL-'
(MWe-Net)-
(MWe-Net)
. [
' 1'.
517
'17..
517'
]
p 2.
517-18.
516' 3.
517 19.
517-4.
517-20.
516c 5.
517
- 21. --
516 6.
516
-22.'
516;
.i 7.
-516 23.
516 8.
517 2 4. -
518 9.
516
'25.
516 i
10.
-516 26.
516-
-11.
516 127.
516 i
L
~12.
516 28.
296 l
13, 516 29.-
361.
14. -
516
'3 0.
513-15.
516 31.
516-i l
l-16, 516 l-
. INSTRUCTIONS:
10n this format, list-theLaverage daily: unit: power. level in MWe-Net 3
~for each day.in theireporting; month.
Compute toLtheEnearest.whole T
L megawatt.
V_YDPF 0411.02 DP-0411-Rev. 3 Page:1 of-1
--RT No. 13..FOl~..18V.
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l UNIT SHUTDOWNS AND POWER REDUCTIONS 4
i DOCKET NO 50-271 l
REPORT MONTH JANUARY UNIT NAME Vermont Yankee i
DATE 910210 l
COMPLETED BY G.A.
Wallin TELEPHONE (802)257-7711 1
1 2
Metnod of License system component Cause and corrective No.
Date Type.
Duration Reason Shutting Down Event Code Code Action to thours)
Reactor 3 Report #
4 5
Prevent Recurrence 91-01 910128 s
0.00 BH N/A N/A RS CONROD Turbine bypass valve testing, rod pattern exchange and scheduled maintenance.
1 F: Forced 2 Reason:
3 Method:
4 Exhibit G-Instructiocs St 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 and License Examination F-Administrative 5 Exhibit I - Same Source VYDPF 0411.03 G-Operational Error (Explain)
DP 0411 Rev.
3' H-(Explain) - Rod pattern exchange Page 1 of 1
1 "8'
DOCKET NO. 50-271 UNIT Vornont'Yonkoo DATE 910210 COMPLETED BY G.A. Wallin TELEPHONE (802)257-7711 REPORT MONTH January
SUMMARY
OF OPERATING EXPERIENCES Highlights Vormont Yankeo operated at 97.8% of rated thermal power for the month.
Gross electrical generation was 390,987 MWHe or 97.3% design electrical capacity.
1 Op3 rating Summary The following is a chronological description of plant operations including othat pertinent items of' interest for the month:
At the beginning of the reporting period the plant was operating at'99.9%
of rated thermal power.
910128 At 0240 hours0.00278 days <br />0.0667 hours <br />3.968254e-4 weeks <br />9.132e-5 months <br />, initiated a power reduction to 50% flow to perform turbine bypass valve testing, a rod pattern exchange and scheduled maintenance on the 4B feedwater heater.
910128 At 0257 hours0.00297 days <br />0.0714 hours <br />4.249339e-4 weeks <br />9.77885e-5 months <br />, at 79% power initiated turbine bypass valve testing.
(See Unit Shutdowns and Power Reductions) 910128 At 0335 hours0.00388 days <br />0.0931 hours <br />5.539021e-4 weeks <br />1.274675e-4 months <br />, completed turbine bypass valve testing.
Reducing power to 50% flow.
910128 At 0354 hours0.0041 days <br />0.0983 hours <br />5.853175e-4 weeks <br />1.34697e-4 months <br />, at 50% flow, initiated a rod pattern exchange.
(See Unit Shutdowns and Power Roductions) 910128 At 0517 hours0.00598 days <br />0.144 hours <br />8.54828e-4 weeks <br />1.967185e-4 months <br />, completed the rod pattern exchange. ' Remaining at 50% flow until 4B feedwater heater repairs are complete.
910129 At 1200 hours0.0139 days <br />0.333 hours <br />0.00198 weeks <br />4.566e-4 months <br />, completed 4B feedwater heater repairs and a return to Zull power was initiated.
1 At the end of the reporting period the plant was operating at 99.9% of rotod thermal power.
VYDPF 0411.04 DP 0411 Rev. 3 PGgs 1 of 1 RT No. 13.F01.18X l
1 m