ML20128M521

Monthly Operating Rept for June 1985

ML20128M521
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	06/30/1985
From:	Burger F, Murphy W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
VYV-85-315, NUDOCS 8507260004
Download: ML20128M521 (7)

Text

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OPERATING DATA REPORT Docket No.

50-271 Date 850709 1

Completed by F.J. Buraer Telephone (802) 257-7711 OPERATING STATUS Notes:

1.

Unit Name:

Vermont Yankee 2.

Reporting Period:

June 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 I?We):

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 720.00 4343.00

12. Number of Hours Reactor was Critical 720.00 4327.97 91141.90

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 720.00 4322.55 88752.62

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 1117366.50 6774274.50 129333284.00

17. Gross Electrical Energy Generated (MWH) 363263.00 2272482.00 43062230.00

18. Net Electrical Energy Generated (MWH) 340834.00 2166652.00 40867500.00

19. Unit Service Factor 100.00 99.53 79.25

20. Unit Availability Factor 100.00 99.53 79.25

21. Unit Capacity Factor (using MDC Net) 93.92 98.98 72.41

'22. Unit Capacity Factor (using DER Net) 92.10 97.06 71.00

23. Unit Forced Outage Rate 0.00

.47 7.06

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

Refuelina outage scheduled to begin September 21, 1985 and continue to April 15, 1986.

25. If shut down at end of report period, estimated date of startup:

',26. Units in Test Status (prior to commercial operation):

Forecast Achieved Initial Criticality Initial Electricity l

Commercial Operation 1

MSRI.2 8507260004 850630 f

ADOCK 05000271 PDR If' Ig

AVERAGE DAILY UNIT POWER LEVEL Docket No.

50-271 Unit Vermont Yankee Date 850709 Completed by F.J. Burger Telephone (802) 257-7711 MONTH May, 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 481 17 417 2

405 18 481 3

479 19 485 4

488 20 486 5

488 21 486 6

488 22 486 7

-489 23 472 8

488 24 481 9

469 25 487 10 484 26 488 11 488 27 487 12 487 28 485 13

-488 29 484 14 488 30 402 15 367 31 16 435 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.

MSR.F2

,a Dock:;t No.

50-271 Unit Vermont Yankee UNIT SHUTDOWNS AND POWER REDUCTIONS Date 850709 Completed by F. J. Burger REPORT MONTH June Telephone (802) 257-7711 1

2 3

4 5

No.

Date Typed Duration Reason Method of License System Component Cause and Corrective Action to (hours)

Shotting Down Event Code Code Prevent Recurrence Reactor Report 'lk 85-09 850602 S

0 B

4 N/A RB CONROD Power reduction for turbine (Power and control rod surveillance.

Reduction) 85-10 350615 S

0 B

4 (Power N/A RB CONR00 Power reduction for turbine Reduction) and control rod surveillance.

85-11 850630 S

0 B

4 N/A RB CONROD Power reduction for turbine and control rod surveillance.

(g g 1

2 3

4 F-Forced A-Equipment Failure (Explain)

Method:

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

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

F-Administrative 5

G-Operational Error (Explain)

Exhibit I - Same Source H-Other (Explain)

MSR.F3

Unit Vermont Yankee Data 850709 Camp 1sted by F.J. Burner 1

SAFETY-RELATED MAINTENANCE Telephone (802) 257-7711 EQUIPENT NATURE OF LER OR OUTAGE MALFLNCTION CORRECTIVE ACTION MAINTENAfCE M.MER CAUSE RESLLT Containment H20 Monitor Corrective LER 85 Vibration-Suction Piping Replaced Piping 2

System II Mt 85-1040 Separated from Pump l

t i.

'I l

i i

i MSR.F4 4

1 l

s Dockst No.

50-271 Unit Vermont Yankee Date 850709 Completed by F.J. Burger Telephone (802) 257-7711 REPORT MONTH June

SUMMARY

OF OPERATING EXPERIENCES Hiahliahts Vermont Yankee operated at 97.4% of rated thermal power for the month. Gross electrical generation was 363,263 MWH,or 94.3% of design electrical capacity.

Operatina 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 operating at 99.7% of rated thermal power.

850602 At 0030 hrs, a power reduction was initiated for main turbine and control rod surveillance.

850602 At 0207 hrs, a return to full power was started.

850615 At 0030 hrs a power reduction was initiated for main turbine and control rod testing.

850615 At 0152 hrs. a return to full power was started.

850630 At 0030 hrs. a power reduction was initiated for main turbine and control rod surveillance.

850630 At 0030 hrs. a return to full power was started.

At the end of the reporting period the plant was operating at 93% of rated thermal power.

FJB/pt:MSR1.1/MSR

I v_.

VERMONT YANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 GOVERNOR IIUNT ROAD VERNON, VERMONT 05354 VYV 85-315 July 10, 1985 U. S. Nuclear Regulatory Commission Director, Office of Management Information and Program Control 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, 1985.

Very truly yours, VERMONT YANKEE NUCLEAR POWER CORPORATION A da---

Warren P.

urphy Vice Pres dent and Manager of Operations WPMgJ8/pt:MSR1.1 k

,p

e VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 85-06 FOR THE MONTH OF JUNE, 1985 I

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