ML20238F131

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Monthly Operating Rept for Aug 1987
ML20238F131
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 08/31/1987
From: Murphy W, Wallin G
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
VYV-87-181, NUDOCS 8709150393
Download: ML20238F131 (6)
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i VERMONT YANKEE NUCLEAR POWER STATION.

MONTHLY STATISTICAL REPORT 87-08 FOR THE MONTH OF AUGUST, 1987 1

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8709150393 070031 PDR 16b R

ADOCK 05000271 PDR gQ t

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.- OPERATING DATA REPORT

, DOCKET NO. 50-271 DATE 870910-COMPLETED BY G.A. Wallin TELEPHONE (802) 257-7711 OPERATING STATUS

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Notes:

l ', Unit Name: Vermont Yankee

'2.' Reporting Period: August

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 5831.00 ------
12. Number of Hours Reactor was Critical 165.98 5252.98 102723.71
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 165.60 5247.28 100225.97
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 209780.00 7957136.00 146632776.50
17. Gross Electrical Energy Generated (MWH) 67905.00 2666135.00 48794969.00
18. Net Electrical Energy Generated (MWH) 62987.00 2534374.00 46293050.00
19. Unit Service Factor 22.26 89.99 76.51
20. Unit Availability Factor _

22.26 89.99 76.51

21. Unit Capacity Factor (using M)C Net) 16.80 86.24 70.12
22. Unit Capacity Factor (using DER Net) 16.47 84.56 68.76
23. Unit Forced Outage Rate 0.00 0.10 6.37
24. Shutdowns scheduled over next 6 months (Type, Date and Duration of Each): _

Refueling outage began on August 8,1987 for 8 weeks.

25. If shut down at end of report period, estimated date of startup: October 2, 1987
26. Units in Test Status (prior to commercial operation): N/A Forecart Achieved INITIAL CRITICALITY

-VYOPF 0411.01 INITIAL ELECTRICITY Original COMIERCIAL OPERATION

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. AVERAGE DAILY UNIT POWER LEVEL-

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DOCKET NO. 50-271 UNIT Vermont Yankee DATE 870910 COMPLETED BY G.A. Wallin TELEPHONE (802) 257-7711 MONTH August DAY- AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

-1 395 17 0 _

,2 393 18 0

3. 392 19 0 4 390 20 0 5 390 21 0 6 387 22 0 7 278 23 0 8 0 24 0 9 0 25 0 10 0 26 0

'11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0 INSTRUCTIONS:

l On this format, list the average daily unit power level in MWe-Net for each day j in the reporting month. Compute'to the nearest whole megawatt.

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VVDPF 0411.02 Original .

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. DOCKET NO. 50-271 UNIT Vermont Yankee DATE 870910 COMPLETED BY G.A. Wallin TELEPHONE (802) 257-7711 REPORT MONTH August SU WARY OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 17.7% of rated thermal power for the month.

Gross electrical' generation was 67,905 MWHe or 16.9% of design y electrical capacity. ,,

Operating Summary > s,

-Thefollowingisachronologicaldescriptionofplant.operationsinclddinh

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other pertinent items of interest for the month: ,.

At the beginning of the reporting period the plant was operating at 8p 3% of rated thermal power.

  • 870802 At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, decreased power to 79% for Control Rod Drive and Turbine Bypass Valve testing. (See Unit Shutdowns and Power Reductions).

870802 At 0105 hours0.00122 days <br />0.0292 hours <br />1.736111e-4 weeks <br />3.99525e-5 months <br />, completed Control Rod Drive and Turbine Bypass Valve testing. A return to full power was initiated.

870807 At 2136 hours0.0247 days <br />0.593 hours <br />0.00353 weeks <br />8.12748e-4 months <br />, the generator was removed from the grid.

870807 At 2159 hours0.025 days <br />0.6 hours <br />0.00357 weeks <br />8.214995e-4 months <br />, the reactor scrammed due to high pressure spike on the Mechanical Pressure Regulator. Shutdown for the 1987 Refueling Outage commenced. (See Unit Shutdowns and Power Reductions).

At the end of the reporting period, the plant was operating at 00.0% of rated thermal power.

VYDPF 0411.04 Original i

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J VERMONT YANKEE NUCLEAR POWER CORPORATION P. O. DOX 157 GOVERNOR HUNT ROAD VERNON, VERMONT 05354 September 10, 1987 VYV 87-181 1

U. S. Nuclear Regulatory Commission Director, Office of Management Information and Program Control Washington, D. C. 20555 l-

Dear Sir:

Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of August, 1987.

Very truly yours, VERMONT YANKEE NUCLEAR POWER CORP.

hass-- h Warren P Mu h VicePresidentand(

Manager of Operations WPM /GAW/gmf:MSR1.1/145R VYDPF 0411 Original

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