ML20012F437
| ML20012F437 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 03/31/1990 |
| From: | Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| VYV-90-087, VYV-90-87, NUDOCS 9004120381 | |
| Download: ML20012F437 (6) | |
Text
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4 VERMONT YANKEE NUCLEAR POWER CORPORATION 1
i P. O. BOX 157 GOVERNOR HUNT ROAD VERNON, VERMONT 05354 April 10, 1990 VYV 90-087 P
U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C.
20555 Dear Sir Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of March, 1990.
very truly yours, VERMONT YANKEE NUCLEAR POWER CORP.
Y" Wfurph l
Warren.P.
M Vice President an.
Manager of operations cet
- 1) USNRC 2
Region I i
l 475 Allendale Road King of Prussia, PA 19406
DP 0411 Rev. 3 Page 1 of 1
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l VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 90-03 FOR THE MONTH OF MARCH, 1990 i
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CPERATING DATA REPORT t
DOCKET NO.
50-271 DATE 900410 i
COMPLETED BY G.A. Wallin i
TELEPHONE (802)257-7711 OPERATING STATUS 1.
Unit Names Vermont Yankee NOTES:
2.
Reporting Period:
March 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 2160.00 i
12.
Number Of Hours Reactor was Critical 614.52 2030.52 122696.38 13.
Reactor Reserve Shutdown Hours 0.00 0.00 0.00 14.
Hours Generator On-Line 536.61 1952.61 119929.68 15.
Unit Reserve Shutdown Hours 0.00 0.00 0.00 16.
Gross Thermal Energy Generated (MWH) 831653.00 3061476.00 177071032.50 17.
Gross Electrical Energy Generated 277695.00 1035155.00 58989044.00 18.
Net Electrical Energy Generated (MWH)265861.00 992427.00 56008126.00 19.
Unit Service Factor 72.13 90.40 78.07 20.
Unit Availability Factor 72.13 90.40 78.07 21.
Unit Capacity Factor (Using MDC Net) 70.90 91.16 72.34 22.
Unit Capacity ractor(Using DER Net) 69.52 89.39 70.93 23.
Unit Forced Outage Rate 14.60 4.49 5.70 24.
Shutdowns scheduled over next 6 months (Type, Date, and Duration of Each):
1990 Refueling Outage scheduled to begin on September 1, 1990 and conclude on October 13, 1990.
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 l
INITIAL ELECTRICITY COMMERCIAL OPERATION VYDPr 0411.01 DP 0411 Rev. 3
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AVERAGE DAILY UNI"! POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 900410 t
COMPLETED BY G.A.
Wallin TELEPHONE (802)257-7711 MONTH March DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)
(MWe-Net) 1.
518 17.
0 t
2.
518 18.
O 3.
519 19.
0 4.
515 20.
0 l
5.
518 21.
O i
6.
518 22.
0 7.
518 23.
O i
8.
518 24.
0 9.
518 25.
126 10.
518 2 6..
418 11.
5T4 27.
407 12.
518 28.
468 13, 517 29.
516 1
14.
517 30.
520 15.
517 31.
521 16, 340 4
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 nogawatt.
VYDPr 0411.02 DP 0411 Rev. 3 Page 1 of 1 RT No. 13.rO1.18V
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s UNIT SMUTDOWNS AND FOWER REDUCTIONS DOCKET Wo 50-271 REPORT MONT8 MARCH UW1T WhWE Torsomt feehoe i
DATE 940414 l
COMPLETED BY G.A.
wallan TELEFaceE (552)257-7711 1
2 Method of License System Component Cause and Corrective No.
Date Type Duration Reason Shutting Down Event Code Code Acties te (hours)
Reactor 3 Reporte 4
5 Frevent Recurrence 90-02 900316 5
115.62 a,n*
1 m/A Re CosRop Scheduled shutdown to perfere preventative and corrective maintenance.
90-02 900321 F
91.77 A
3 90-04 NA MECrum Reactor seressed en hiTh pressure caused by a main turbine control system failure.
I I
3 Method:
4 Exhibit G-Instructions 1
F: Forced 2 Reason:
5: Scheduled A-Equapment Failure (Emplain)- See LER 90-04 1-Manual for Preparaties of Data B-Maintenance or Test 2-Manuel Scram Entry Sheets for Licensee C-Refueling 3-Automatic Scree Event Report (LER) File D-Regulatory Restriction 4-Other (Expleia)
E-operator Training and License Examination F-Ademnistrative 5 Exhibit I - Same Scurce TYDFF 0411.03 G-operational Error (Explain)
DF 0411 Rev. 3
- N-(Emplain) - Control Rod Patteen Enchange Page 1 of 1
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DOCRET NO. 50-271 UNIT Verrtnt Yankne
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DATE 900410 COMPLETED BY G.A. Wallin TELEPHONE 1802)257-7711 i
REPORT MONTH March i
SUMMARY
OF OPERATING EXPERICNCES
(
i Highlights vermont Yankee operated at 19 2% of rated thermal power for the month.
Gross electrical generation was 277,695 MWHe or 69.1% design electrical l
capacity.
I l
Op3 rating Summary Tha following is a chronological descri ption of plant operations including i
other pertinent items of interest for tae month:
At the beginning of the reporting period the plant was operating at 99.9%
of rated thermal power.
900316 At 1200 hours0.0139 days <br />0.333 hours <br />0.00198 weeks <br />4.566e-4 months <br />, initiated a manual shutdown to perform scheduled maintenance, surveillance testing, single rod scram testing, and i
a rod pattern exchange.
(See Unit Shutdowns and Power Reductions) 900316 At 1923 hours0.0223 days <br />0.534 hours <br />0.00318 weeks <br />7.317015e-4 months <br />, turbine-generator removed from the grid.
900316 At 2220 hours0.0257 days <br />0.617 hours <br />0.00367 weeks <br />8.4471e-4 months <br />, the reactor was sub-critical.
900319 At 2045 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.781225e-4 months <br />, began single rod scram testing.
900320 At 0104 hours0.0012 days <br />0.0289 hours <br />1.719577e-4 weeks <br />3.9572e-5 months <br />, completed single rod scram testing.
900321 At 0304 hours0.00352 days <br />0.0844 hours <br />5.026455e-4 weeks <br />1.15672e-4 months <br />, the reactor was critical and a return to full power was initiated.
900321 At 2248 hours0.026 days <br />0.624 hours <br />0.00372 weeks <br />8.55364e-4 months <br />, the reactor scrammed on high pressure due to a Turbine Control Oil System problem.
(See Unit Shutdowns and Power Reductions) 900323 At 0333 hours0.00385 days <br />0.0925 hours <br />5.505952e-4 weeks <br />1.267065e-4 months <br />, the reactor was critical.
I 900325 At 1046 hours0.0121 days <br />0.291 hours <br />0.00173 weeks <br />3.98003e-4 months <br />, the turbine-generator was phased to the grid and I
a return to full power was initiated.
l At the end of the reporting period the plant was operating at,99.9% of rated thermal power.
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