ML20151C110
| ML20151C110 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 06/30/1988 |
| From: | Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| VYV-88-142, NUDOCS 8807210229 | |
| Download: ML20151C110 (6) | |
Text
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- OPERATING _ DATA REPORT-
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4 DOCKET ~NO.
50-271-EDATE 880710-COMPLETED ~BY G.A.
Wallin t
TELEPHONE?
(802)257-7711 OPERATING STATUS
' 1.
Unit Name:
Vermont Yankee NOTES:
- 2.. Reporting Period:
June 3.
Licensed Thermal Power (MWt) 159?
4.
Nameplate Rating (Gross MWe):
540 5.
Design Electrical Rating (Net MWe): 514(oc) 504(cc) 6.
Maximum-Dependable Capacity (Gross MWe): 533
'7..
Maximum. Dependable Capacity (Net MWe):
504 8.
If changes occur in capacity ratings (Items Number 3 through 7)s!nce last report, give reasons:
N/A 9.
Power level _to which restricted, if any(!Iet MWe):
N/A.
10.
Reasons for restrictions, if any:
N/A This Month Yr-to-Date Cumulative 11.
Hours In Reporting Period 720.00 4367.00 12.
Number Of Hours Reactor was Critical 554.17 4201.17 109046.53 13.
Reactor Reserve Shutdown Hours 0.00 0.00 0.00 14.-
Hours Generator On-Line 550.30 4197.30 106466.57 15.
Unit Reserve Shutdown Hours
~~~~ ~l[l@I 0.00 0.00 16.
Gross Thermal Energy Genetated(MWH) 116714.50 6603414.00 156344125.50 17.
Grcss Electrical Energy _4enerated 279926.00
_2218436.00 52058380.00 18.
Net Elsctrical Energy Generated (MWH)262319.00 2120457.00 49415544.00 i
19.
Unit Service Factor 76.43 96,11 76.99 20.
Unit Availability Factor 76.43 96,11 76.99 21 Unit capacity Factor (Using MDC Net) 72.29 96.34 70.90 22.
Unit Capacity Factor (Using DER Net) 70.88 94.[7 69.52 23.
Unit Forced Outage Rate 4.79 0.. C 6.11 1
24.
Shutdowns scheduled over next 6 months (Type, Date, and DuratTon of Each): N/A 25.
If shut down at end of report period, catTinated date of startup: 07/01/88:
26.
Units In Test Status (prior to commercial operation): N/A-Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COM!!ERCIAL OPERATION VYDPF 0411.01 DP 0411 Rev. 2 Page 1 01 1 RT No.
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8807210229 880630 9q DR ADOCK 050 1
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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 880710 COMPLETED BY G.A.
Wallin TELEPHONE 1802)257-7711 MOITH June DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)
(MWe-Net) 1 496 17, 481
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2.
498 18, 353
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3.
496 19.
122 4.
495 20.
421 5.
490 21.
436 6.
496 22.
482
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7.
495 23.
480
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~ ~ ~
8.
491 4.
321 9.
492 25.
C' 10.
493 26.
0
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11.
489 27.
0 12, 480 28.
0 13.
485 29.
0
^
14.
483 30.
0 15.
477' 31.
16.
4 /8 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 tagawatt.
VYDPF 0411.02 DP 0411 Rev. 2 PSge 1 of 1 RT No. 13.F01.18V I
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A-UNIT SHUTDOWNS AND POWER REDUCTIONS DOCEZT NO 10-271 REPORT MONTH JUNE UNIT NAME vermont Yankee DATE 880710 COMPLETED SY G.A.
Wallin TELEPHONE (802)257-7711 l Type 1
2 Method of l License System component Cause and Corrective Duration Reason Shutting Down Event Code Code Action to Ee.
Date (hocrs)
Reactor 3 Report 8 4
Prevent Recurrence 88-05 880618 r
17.47 A*
3 88-07 CH INSTRU Integrato?; f ailure within the reedwater control System. The ~
Integeator was replaced.
88-06 880621 5
0.00 H
4 N/A RB C1NROD dod Pattern Adjusteent.
Power Reduction 88-07 880624 r
10.23 A*
3 88-08 MB twifRb 810-turbine bearing h1gh vibration signal caused by a faulty coil.
The coil was replaced.
88-07 880624 5
142.00 8
3 N/A ZZ ZZZZZZ Scheduled shutdown to perform preventative and corrective maintenance.
1 r: Forced 2 Reason:
3 Methodt 4 Exhibit C-Ins 2 ructions 8
S Scheduled
- A-Equipment railure (Expla,a) See LER88-07 1-Manual for Preparation of Data
- A-Equipment railure (Est"ain) See LER$8-08 2-Manual Scram Entry Sheets for Licensee B-Maintenance or Test 3-Automatic Scram Event Report (LER) File C-Refueling 4-Other (Explsin)
(NUREG 0161)-
D-Regulatory Resteiction E-Cpe rato r' Trait ing and License Examination F-Administrsti.<e 5 Exhibit I - Same Source VTDPr 0411.03 G-operational Error (Explain)
DP stil Rev. 2 H-tExplaint Page 1 of 1 RT No. 13.rol.18W M
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DOCKET NO. 50-271 UNIT Varront Ycnkao DATE TRUTl10 COMPLETED BY G.A.
Wallin
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TELEPHONE (802)257-7711 REPORT MONTH June
SUMMARY
OF OPERATING EXPERIENCES Highlights Vormont Yankee operated at 74.7% of rated thermal power for the month.
Gross electrical generation was 278,926'MWHe or 71.7% design electrical capacity.
Oparating Summary Th2 following is a chronological der *:ription of plant. operations including other pertinent items of interest fo2 the month:
At the beginning of the reporting period the plant was operating at 99.9%
of rated thermal power.
880d18 At 1737 hours0.0201 days <br />0.483 hours <br />0.00287 weeks <br />6.609285e-4 months <br />, the Turbine tripped and Reactor scrammed due to an integrator failing in the Feedwater Control system.
(See Unit Shutdowns and Power Reductions) 4 880619 At 0713 hours0.00825 days <br />0.198 hours <br />0.00118 weeks <br />2.712965e-4 months <br />, the Reactor was critical and a return to full power was initiated.
880619 At 1105 hours0.0128 days <br />0.307 hours <br />0.00183 weeks <br />4.204525e-4 months <br />, the Turbine-Gen 9rator was phased to the grid.
880621 At 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />, reduced power to 60% for a rod pattern adjustment.
(See Unit Shutdowns and Power Reductions) 880621 At 0623 hours0.00721 days <br />0.173 hours <br />0.00103 weeks <br />2.370515e-4 months <br />, rod pattern adjustment completed, returnin to full power.
880624 At 1546 hours0.0179 days <br />0.429 hours <br />0.00256 weeks <br />5.88253e-4 months <br />, the Turbine tripped and Reactor scrammed due to a turbine bearing #10 high. vibration signal.
A previously scheduled shutdown for Maintenance work began at this time.
(See Unit Shutdowns and Power Reductions)
At the and of the reporting period the plant was operating at 00.0% of rated thermal power.
VYIaPr 0411.04 DP 0411 Rev. !!
Pace 1 of 1 RT'No. 13.rO1.18X
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-VERMONT YANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 GOVFJNOR HUNT ROAD VERNON, VERMONT 05354 July 10, 1988 VYV 88-142 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 June, 1988.
Very truly yours, VERMONT YANKEE NUCLEAR POWER CORP.
Jw -f/
v t
Warren /P. Mr Vice Presiden an Manager of Operations cc:
- 1) USNRC Region I 175 Allendale Road t
King of Prussia, PA 19406
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i l-i VERMONT YANKEE. NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT.88-06 i
FOR THE MONTH OF. JUNE, 1988 4
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DP 0411 Rev. 2
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