ML20085E504

Monthly Operating Rept for May 1995 for Vermont Yankee

ML20085E504
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	05/31/1995
From:	Reid D, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-95-62, VY-RCE-95-014, VY-RCE-95-14, NUDOCS 9506160556
Download: ML20085E504 (6)

Text

.

"7. VERMONT YANKEE NUCLEAR POWER CORPORATION s

.# ~.9 P.O. Box 157, Governor Hunt Road i

(W{

Vernon, Vermont 05354-0157

NY, (802) 257-7711 June 10, 1995 VY-RCE-95-014 BVY 95-62 U.S.

Nuclear Regulatory Commission Attn:

Document Control Desk washington, D.C.

20555

Reference:

a)

License No. DPR-28 (Docket No. 50-271)

In accordance with section 6.7.A.3 of the Vermont Yankee Technical Specifications, submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of May, 1995.

Sincerely, Vermont Yankee Nuclear Power Corp.

s C.

Donald A. Reid Vice President, Operations cc:

USNRC Region I Administrator USNRC Resident Inspector - VYNPS USNRC Project Mananger - VYNPS 1

9506160556 950531 PDR ADOCK 05000271 R

PDR I

V

.9,-

l VERMONT YANKEE NUCLEAR POWER STATION I

l l

MONTHLY STATISTICAL REPORT 95-05 FOR THE MONTH OF MAY 1995 DP 0411 Rev. 5 I

Page 1 of 1

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OPERATING DATA REPORT DOCKET NO.50-271 i

DATE 950610 COMPLETED BY G.A.

WALLIN l

TELEPHONE (802)257-7711 DPERATING STATUS

1. Unit Name:

Vermont Yankee

2. Reporting Period:

May NOTES:

3. Licensed Thermal Power (MWt):1593 4'. Nameplate Rating (Gross MWe): EAR

{

5. Design Electrical Rating (Net MWe) :

514 (oc) 504 (cc)

6. Maximum Dependable Capacity (Gross MWe):

515 i

7. Maximum Dependable Capacity (Net MWe):

521 8.

If changes, occur in capacity ratings (Items Number 3 through 7) since last report, give reasons:

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 3623.00 197207.00

12. Number Of Hours Reactor was Critical 716.18 2536.96 162400.62

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00,

14. Hours Generator On-Line 673.55 2487.45 159204.56

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 1028382.40 3868773.65 238038648.65

17. Gross Electrical Energy Generated 351289.00 1313292.00 79350644.Q0

18. Net Electrical Energy Generated (MWH) 335962.00 1259546.00 75422120.00

19. Unit Service Factor 90.53 68.66 80.73

20. Unit Availability Factor 90.53 68.66 80.73

21. Unit Capacity Factor (Using MDC Net) 89.60 68.98 75.88

22. Unit Capacity Factor (Using DER Net) 87.85 67.64 74.41

23. Unit Forced Outage Rate 0.00 0.00 4.89

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 CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION VYDPF 0411.01 DP 0411 Rev. 5 Page 1 of 1 RT No. 13.F01.19F

i AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 950610 COMPLETED BY G.A.

WALLIN TELEPHONE (802)257-7711 MONTH May DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

0 17.

528 i

2.

0 18.

515 l

3.

5 19.

528 i

4.

253 20.

531 5.

411 21.

529 6.

410 22.

528 7.

411 23.

524 8.

459 24.

518 9.

492 25.

519 i

10.

524 26, 516 l

I 11.

531 27.

523 12.

531 28.

521 13.

530 29.

524 1

14.

530 30.

522 i

15.

530 31.

526 16.

532 INSTRUCTIONS-On this format, list the average daily unit power level in MWE-Net l

for each day in the reporting month.

Compute to the nearest whole i

megawatt.

VYDPF 0411.02 DP 0411 Rev. 5 l

Page 1 of 1 RT No. 13.F01.18V l

i i

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V'

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G' l

lJ j

l UNIT SHUTDOWNS AND POWER REDUCTIONS l

l REPORT MONTH MAY DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 950610 l

COMPLETED BY G.A.

Wallin i

TELEPHONE (802)257-7711 I

l 1

2 3

4 5

l No.

Date Type Duration Reason Method of License System Component Cause and Corrective (hours)

Shutting Event Code Code Action to Prevent Down Report #

Recurrence Reactor 95-02 950503 S

70.45 B,C 1

N/A N/A N/A Shutdown for 1995 (Cont)

Refueling / Maintenance outage 95-03 950518 S

0.00 H

4 N/A RB CONROD Power reduction for Power a rod pattern Reduction adjustment 1

F: Forced 2 Reason:

3 Method:

4 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 License C-Refueling 3 - Automatic Scram Event Report (LER) File D-Regulatory Restriction 4 - Other (Explain)

(NUREG 0161)

E-Operator Training and License Examination 5 Exhibit I - Same Source VYDPF 0411.03 F-Administrative DP 0411 Rev. 5 G-Operational Error (Explain)

Page 1 of 1

• H-(Explain) - Rod pattern adjustment

DOCKET NO. 50-271 DATE 950610 COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 REPORT MONTH May

SUMMARY

OF OPERATING EXPERIENCES Highlichts Vermont Yankee operated at 86.8% of rated thermal power for the month.

Gross electrical generation was 351.289 MWHe or 87.4% 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 00.0%

of rated thermal power.

950502 At 0349 hours0.00404 days <br />0.0969 hours <br />5.770503e-4 weeks <br />1.327945e-4 months <br />, the reactor was critical and a return to full power was initiated.

(See Unit Shutdowns and Power Reductions) 950503 At 2227 hours0.0258 days <br />0.619 hours <br />0.00368 weeks <br />8.473735e-4 months <br />, the turbine-generator was phased to the grid.

950516 At 0001 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, began operation of Circulation water system governed by the NPDES permit, which is based upon river flow and temperature considerations.

1 950518 At 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br />, initiated a power reduction to 75% for a rod i

pattern adjustment.

(See Unit Shutdowns and Power Reductions) 950518 At 0645 hours0.00747 days <br />0.179 hours <br />0.00107 weeks <br />2.454225e-4 months <br />, began a return to full power.

l At the end of the reporting period the plant was operating at 100.0% of h

rated thermal power.

VYDPF 0411.04 DP 0411 Rev. 5 Page 1 of 1 RT No. 13.F01.18X

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