ML20076L201

Monthly Operating Rept for June 1983

ML20076L201
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/12/1983
From:	Burger F, Murphy W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
VYV-83-134, NUDOCS 8307190078
Download: ML20076L201 (7)

Text

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m VERMONT YANKEE NUCLEAR POWER-STATION 4

MONTHLY STATISTICAL REPORT 83-06 FOR THE MONTH OF JUNE, 1983 4

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OPERATING DATA REPORT 50-271 DOCKET NO.

DATE 830712 COMPLETED BY F.J. Burner TELEPHONE (802) 257-7711 Ext. 136 OPERATING STATUS Notes

1. Unit Name:

Vermont Yankee

2. Reporting Period:

June

3. Licensed Thermal Power (MWt):

1593

4. N:meplate 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):

Sna

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.

720.00 4343.00

12. Nuuber Of Hours Reactor Was Critical 298.02 1769.44 75312.43

_13. Reactor Reserve Shutdown Hours n.0n

'n.nn n nn

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14. H:urs Generator On-Line 232.07 1691.27 73110.96

15. Unit Reserve Shutdown Hours n.00 n_nn n nn

16. Gross Thermal-Energy Generated (MWH) 262851.00 2252807.50 105292050.00

17. Gross Electrical Energy Generated (MWH) 81835.00 748737.00 35009884.00 18.'N;t Electrical Energy Generated (MWH) 75558.00 712922.00 33201463.00

19. Unit Service Factor' 19.91 ag_oa 77.33 20'. Unit Availability Factor 32.23 38.94 77.41

21. Unit Capacity Factor (Using MDC Net) 20.82 32.57 69.76

22. Unit Capacity Factor (Using DER Net)

'20.42 31.94' 68.40 23.fUnit Forced Outage Rate 67.77 43.17 7.74-

' 24. Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

None

25. If Shut Down At End Of Report Period, Estimated Date of Startup:

'26. Units In Test Status (Prior to-Commercial Operation):

Forecast Achieved i~

INITIAL CRITICALITY

' INITIAL ELECTRICITY COMMERCIAL OPERATION.

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-271 Vermont Yankee UNIT 830712 DATE COMPLETED BY F. J. Bury,er (802) 257-7711 Ext. 136 TELEPHONE MONTH June DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

0 17.

0 2.

0 18.

n 0

3.

19, 9

j 4.

0 20.

24-5.

0 21.

65 6.

0 22.

117 7.

0 23.

304 8.

0 24.

393 9.

0 25.

1st 10.

0 26.

452 11.

0 27.

499 l

12.

0 28.

son 13.

0 29.

ann 14.

0 30.

1An 15.

0 31.

16.

O 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 megawatt.

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' UNIT SHUTDOWNS AND POWER REDUCTIONS DdCKET No 50-271 UNIT NAME-Vermont Yankee REPORT MONTH

. June 0712 COMPLETED BY F. J. Burger TELEPHONE (802) 257-7711 ext. 136 s-I 8 '2 Cause & Corrective n

o No.

Date y --

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Action to License o

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83-04' 830305 F

437.02 A 3

LER CB PIPEXX Continued the 1983 refueling outage (Cont.)'

83-12/IP repairs o'n the Reactor' Recirculation System as required by I&E Bulletin 83-02, were performed.

83-05 830619

.F 29.70 B

N/A N/A N/A N/A Turbine generator taken off line for overspeed testing and balancing.

83-06 830629 F

21.21 G

2 N/A N/A N/A While performing surveillance testing, the reactor recirculation pump isolation valves inadvertently went shut tripping.

the recirculation pumps. The reactor was manually scrammed.

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4 1 F: Forced Reason:

Method:

Exhibit G-Instructions S: 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) i E-Operator Training & License Examination s

' F-Adminis tra tive 5 Exhibit I - Same Source l

G-Operational Error (Explain)

H-Other (Explain) f 7/801

DOCKET NO.

'50-271' UNIT Vermont Yankee DATE 830712 COMPLETED BY F. J. Burger-TELEPHONE (802) 257-7711 Ext. 136 SAFETY RELhTED MAINTENANCE Page 1 of 1 l

NATURE OF MALFUNCTION LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION RllR Heat Exchanger Corrective N/A-Worn Parts Leakage Replaced Gaskets E14-1A MR 83-0239 CAD Flow Transmitter Corrective N/A Failed Parts Unresponsive Replaced Transmitter FT-VG-LB MR83-1077 Reactor Vessel Level Corrective N/A Worn Parts Unable to Replaced Transmitter Transmitter LT2-3-72A MR 83-1107 Calibrate N

o t-DOCKET NO.

Vermont Yankee UNIT 830712 DATE COMPLETED BY F. J. Burger (802) 257-7711 Ext. 136 TELEPHONE REPORT MONTH June

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 22.92% of rated thermal power for the month.

Gross electrical generation was 81835 MWH or 21.05%of design electrical capacity.

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Operating Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:

At the beginning of the reporting period the plant was shutdown for the extended 1983 refueling outage.

The outage was extended to repair the reactor recirculation piping as required by I&E Bulletin 83-02, 830617

'At 2037 hours0.0236 days <br />0.566 hours <br />0.00337 weeks <br />7.750785e-4 months <br /> the reactor was critical.

830619 At 0501 hours0.0058 days <br />0.139 hours <br />8.28373e-4 weeks <br />1.906305e-4 months <br /> the turbine generator was phased onto the grid.

830619 At 0910 hours0.0105 days <br />0.253 hours <br />0.0015 weeks <br />3.46255e-4 months <br /> the turbine generator was removed from the grid for overspeed testing and balancing.

'830620 At 0153 hours0.00177 days <br />0.0425 hours <br />2.529762e-4 weeks <br />5.82165e-5 months <br /> the reactor scrammed'when the low condenser vacuum switches were bypassed too soon.

830620 At 0552 hours0.00639 days <br />0.153 hours <br />9.126984e-4 weeks <br />2.10036e-4 months <br /> the reactor was critical.

830620 At 1452 hours0.0168 days <br />0.403 hours <br />0.0024 weeks <br />5.52486e-4 months <br /> the turbine generator was phased onto the grid.

830629 At 1437 hours0.0166 days <br />0.399 hours <br />0.00238 weeks <br />5.467785e-4 months <br /> the reactor was manually scrammed when the reactor recirculation pumps tripped (See unit shutdowns.and power reductions).

830630 At 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> the reactor was critical.

830630 At 1150 hours0.0133 days <br />0.319 hours <br />0.0019 weeks <br />4.37575e-4 months <br /> the-turbine generator was phased onto the grid.

~At the end of the reporting period the plant was operating at 79.5%

'of rated thermal power.

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. VERMONT YANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 GOVERNOR HUNT ROAD VERNON, VERMONT 05354 VYV 83-134 July 12, 1983 l

l United States Nuclear Regulatory Commission Director, Office of Management Information and Program Control Washington, DC 20555

Dear Sir:

Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of June, 1983.

Very truly yours, VERMONT YANKEE NUCLEAR POWER CORPORATION M

W.

. Murphy Vice President anager of Operations WPM /caf l

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