BVY-98-154, Monthly Operating Rept for Oct 1998 for Vermont Yankee Nuclear Power Station.With

Monthly Operating Rept for Oct 1998 for Vermont Yankee Nuclear Power Station.With

ML20195D344
Person / Time
Site:	Vermont Yankee
Issue date:	10/31/1998
From:	Balduzzi M, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-98-154, NUDOCS 9811180007
Download: ML20195D344 (6)

Text

. . - .-- - - - - _ =. .. . - _ .

i L -

L L VERMONT YANKEE l NUCLEAR POWER CORPORATION l l P.O. Box 157, Govemor Hunt Road

-Vemon, Vermon' 05354-0157 i

-(802)257-771; I

I November 10,1998 BVY-98-154 United States Nuclear Regulatory Commission A'ITN: 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 October.1998.

Sincerely, I

VERMONT YANKEE NUCLEAR POWiiR CORPORATION hk -

r Michael A. Balduzzi JY Plant Manager I

l cc: USNRC Region I Administrator USNRC Resident Inspector - VYNPS

$671 1 I

l USNRC Project Manager - VYNPS Vermont Department of Public Service ,

l 2

9811100007 981031 I"

.PDR ADOCK 05000271f l R PDR , .,.

. . e, l

. -- s

) *, O g

9 4.

O e VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT E10 FOR THE MONTII OF OCTOBER 1998 I

_ _ . . _ _ _ - ~ . . _ _ _ _ . _ _ _ _ - _ . . _ _ - . _ ~ _ _ . -

~'

~.'

OPERATING DATA REPORT-

' ~

DOCKET No. 50 -271 l' ~DATE 981110 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414

l. - OPERATING STATUS- '

l

1. Unit Name:- Vermont Yankee l

[ 2.tReporting Perio'd: October

j. 3.; Licensed Thermal Power (MWt):1593 l

j- 4. Nameplate Rating (Gross MWe): 540 S'. Design Electrical Rating (Net MWe): 522

6. Maximum Dependable Capacity (Gross MWe): 535

7. Maximum Dependable Capacity (Net MWe): 510

\

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

f

9. Power level to which restricted, if any(Net MWe): N/A 0

.li. Reasons for restrictions, if any: N/A l l

r This Month Yr-to-Date Cumulative 1 l 11. Hours-in Reporting Period 745.00 7296.00 226440.00

12. Number Of Hours Reactor was Critical 643.18 5357.18 188737.16 l 13.. Reactor. Reserve Shutdown Hours 0.00 0.00 0.00. j j ' 14. Hours Generator On-Line 606.23 5227.00 185260.00 '

'15. Unit Reserve Shutdown Hours 0.00 0.00' O.00

, 16.' Gross Thermal Energy Generated (MWH) 918077.50 7976896.60 278750800.50

. 17. Gross Electrical Energy Generated (MWH) 312657.00 2714886.00 93238670.00

18. Net Electrical Energy Generated (MWH) 297659.00 2585656.00 88668411.00

19. Unit Service ~ Factor- 81.40 71.60 80.70

20. Unit Availability Factor 81.40 71.60 80.70

21. Unit Capacity: Factor (Using MDC Net) 78.30 69.50 76.50

22. Unit Capacity Factor (Using DER Net) 76.50 67.90 75.00

23. Unit Forced Outage Rate 18.63 4.78 4.57 l 24. Shutdowns scheduled over next 6 months (Type, Date, and Duration of Each:

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 i VYDPF 0411.01 (Sample)

, DP 0411 Rev. 7 Page 1 of 1 j RT No. 13.F01.19F 4

_.__m. . . . _ . _ . _ _ _ . . . - . . ~ - , _ . . _ _ _ _ . _ .

AVERAGE DAILY UNIT POWER LEVEL i

' ' ' DOCKET NO. 50-271 UNIT Vermont Yankee DATE 981110 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 MONTH October 1

DAY' AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL

- (MWe-Net)' (MWe-Net)

1. 480- -17 . - 0

.2. 483 18. 0 3.- 486- 19. 0

4. G5 20. _

0

'5.

486 21, 1

6. 486 22. 330

-7 . 491 23, 485

.8, 490 24. 509

9. 484 *25. 546

10. 487 26. 525

:

-11. 491 27. 527 l

l 12. 489 28. 527

13. - 489 29. 528 l

l1 14.- 492 30, 527 l

15. 496 31. 527

16. - 54 *25 hour day iTNSTRUCTIONS:

I -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 megawatt.

4 VYDPF 0411.02- (Sample)

DP 0411 Rev. 7

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

d e

A T

v-S-e-- ^

y y --wri y r de

s UNIT SHUTDOWNS AND POWER REDUCTIOMS ,

REPORT MONTH OCTOBER DOCKET NO 50-271 '

UNIT NAME Vermont Yankee , ,

DATE 981110 COMPLETED BY G.A. Wallin ".

TELEPHONE (802)258-5414 i

i 1 2 3 4 5 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 98-09 981016 F 62.43 B 1 N/A CC VALVEX Main Steam line drain valve leakage and Turbine pressure HB MECFUN control system work 98-09 981018 S 76.34 B 1 N/A CC VALVEX Main Steam line drain valve leakage and Turbine pressure HB MECFUN control system work 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) (NOREG 0161)

E-Operator Training and License Examination 5 Exhibit 7 - Same Source VYDPF 0411.03 F-Administrative DP 0411 Rev. 7 G-Operational Error (Explain)

Page 1 of 1 H-(Explain) -

j ,- . -

DOCKET NO. 50-271 '

l DATE 981110

! COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH October

SUMMARY

OF OPERATING EXPERIENCES Highlights;  ;

Vermont Yankee operated at 77.4% of rated thermal power for the month.

Gross electrical generation was 312,657 MWHe or 76~9% design electrical .

capacity.

l Operating Summary LThe 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 94.7%

l of rated thermal power.

981016- At 0112. hours, initiated a manual shutdown due to main steam line drain valve leakage and turbine pressure control system work.

, (See Unit Shutdowns and Power Reductions)

L 981016';AtLO434 hours, the turbine-generator was_ removed from the grid.

(- 981016 At 0956 hours0.0111 days <br />0.266 hours <br />0.00158 weeks <br />3.63758e-4 months <br />. the reactor was sub-critical.

981020 At 1545' hours,'the reactor was critical.

981021 At 2320 hours0.0269 days <br />0.644 hours <br />0.00384 weeks <br />8.8276e-4 months <br />, the turbine-generator was phased-to the grid, and began a return to full power.

I i-

! .At the endlof the reporting period the plant was operating at 99.9% of

}. rated thermal power.

i l VYDPF 0411.04 (Sample)

DP 0411 Rev. 7

- Page 1 of 1

[ RT No. 13.F01.18X y

, + - -- a, --- n r , ,-~~ - - - v-. y , , , ,,,g -

g y .,y, -

g ,v m, a- y