ML20147B358

Monthly Operating Rept for Dec 1987

ML20147B358
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	12/31/1987
From:	Murphy W, Wallin G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC
References
VYV-88-007, VYV-88-7, NUDOCS 8801150221
Download: ML20147B358 (6)

Text

OPERATING DATA REPORT DOCKET NO.

50-271 DATE 880110 COMPLETED BY G.A. Wallin TELEPHONE (802) 257-7711 OPERATING STATUS Notes:

1.

Unit Names Vermont Yankee 2.

Reporting Periodi_

December 3.

Licensed Thermal Power (MWt):

1593 4.

Nameplate Rating (Gross MWe):

540 5.

Design Electrical Ratirig (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 Nunter 3 through 7) since last recort, giva reasons:

N/A 9.

Power level to which restricted, if any (Net MWe):

N/A

10. Reasons for restrictions, if any:

N/A This mnnth Yr-to-Date Cumulative

11. Hours in Reporting Period 744.00 8760.00

12. Number of Hours Reactor was Critical 744.00 7374.63 104845.36

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 744.00 7290.58 102269.27

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 1171381.00 11065071.00 149740711.50

17. Gross Electrical Energy Generated (MWH) 396092.00 3711110.00 49839944.00

18. Net Electrical Energy Generated (MWH) 380027.00 3536411.00 47295087.00

19. Unit Service Factor 100.00 83.23 76.37

20. Unit Availability Factor 100.00 83.23 76.37

21. Unit Capacity Factor (using K)C Net) 101.35 80.10 70.07

22. Unit' Capacity Factor (using DER Net) 99.38

- 78. 54 68.71

23. Unit Forced OJtage Rate 0.00 1.17 6.32

24. Shutdowns scheduled over next 6 months (Type, Date and Duration of Each):

N/A

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 CM TICALITY VYDPF 0411 O INITIAL ELECTRICITY Roy. 1 CO M RCIAL OPERATION 8801150221 871231 PDR ADOCK 05000271 R

PDR g

S S \\

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-271 UNIT Vermont Yankee DATE 880110 COMPLETED BY.G.A. Wallin TELEPHONE

__(802) 257-7711 MONTH December DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (We-Net)

(MWe-Net) 1 519 17 516 2

518 18 517 3

518 19 517 l

4 518 20 513 5

409 21 517 6

461 22 517 7

517 23 517 I

I 8

517 24 517 l

9 517 25 517 l

10 517 26 517 l

l l

11 518 27 513 12 517 28 517 i

l 13 510 29 516 1

i 14 516 30 515 15 505 31 516 l

16 516 1

l INSTRUCTIONS:

l l

On this format, list the average daily unit power level in We-Net for each day in the reporting rienth.

Compute to the nearest whole megawatt.

VYDPF 0411.02 Rev. 1

DOCKET NO.

50-271 UNIT NAE Vermont Yankee UNIT SHUTDOWNS AND POWER REDUCTIONS DATE 880110 COMPLETED BY G. A. wallin REPORT MONTH December TELEPHOPE (802) 257-7711 1

2 3

4 5

No.

Date Type Duration Reason Method of Licensee System Component Cause and Corrective Action to (hours)

Shutting Down Event Code Code Prevent Recurrence Reactor Report +

87-21 871205 S

0.00 B,H*

4 N/A RB CONROD Control Rod Pattern Exchange and Power Surveillance Testing Reduction 1

2 Reason:

F-Forced A-Equipment Failure (Explain) 3 Method:

4 Exhibit G - Instructions S-Scheduled B-Maintenance or Test 1-Manual for Preparation of Data Entry C-Refueling 2-Manual Scram St.Tts for Licensee Event D-Regulatory Restriction 3-Automatic Scram Report (LER) File (NLREG 0161)

E-Operator Training and License Examination 4-Other (Explain)

F-Administrative 5 Exhibit I - Same Source G-Operational Error (Explain) See Above Cause and Corrective Action section

• H-Other (Explain) - Control Rod Pattern Exchange VYDPF 0411.03 Rev. 1

00CXET NO.

50-271 UNIT Vermont Yankee DATE 880110 COMPLETED BY G.A. Wallin TELEPHONE (802) 257-7711 REPORT MONTH December SU WARY OF ON RATING EXPERIEPCES Highlights Vermont Yankee operated at 98.8% of rated thermal power for the month.

Gross electrical generation was 396,092 MWHe or 98.6% of design electrical capacity.

Operatino Summary The following is a chronological description of plant operations including other pertinent items of interest for the months At the beginning of the reporting period the plant was operating at 100.0%

of rated thermal power.

871205 At 0903 hours0.0105 days <br />0.251 hours <br />0.00149 weeks <br />3.435915e-4 months <br />, reduced power to minimum recirculation flow.

871205 At 1005 hours0.0116 days <br />0.279 hours <br />0.00166 weeks <br />3.824025e-4 months <br />, initiated control rod exercising.

871205 At 1107 hours0.0128 days <br />0.308 hours <br />0.00183 weeks <br />4.212135e-4 months <br />, completed control rod exercising; initiated a rod pat-tern exchange.

(See Unit Shutdowns end Power Reductions).

871205 At 1215 hours0.0141 days <br />0.338 hours <br />0.00201 weeks <br />4.623075e-4 months <br />, completed the rod pattern exchange.

871205 At 1340 hours0.0155 days <br />0.372 hours <br />0.00222 weeks <br />5.0987e-4 months <br />, a return to full power was initiated.

At the end of the reporting period, the plant was operating at 100.0% of rated thermal power.

i VYDPF 0411.04 Rev. 1 l

i

hERMONT YANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 GOVERNOR IIUNT ROAD VERNON, VERMONT 05354 January 10, 1988 VYV 88-007 U. S. Nuclear Regulatory Commission Director, Office of lbnagement Information and Program Control Washington, D. C.

10555

Dear Sir:

Submitted herewith is the Monthly Statistical Repo.t for the Vermont Yankee Nuclear Power Station for the month of December,1987.

Very truly yours, VERMONT YANKEE NUCLEAR POWER CORP.

4*---

Y Warren P. Murph Vice President and Manager of Operatio s j

i VYOPF 0411 Rev. 1

\\\\

VERMONT YANKEE NUCLEAR POWEP. STATION MONTHLY STATISTICAL REPORT 87-12 FOR THE MONTH OF DECEMBER,1987

]

VYDPF 0411 Rev. I s