RC-99-0122, Monthly Operating Rept for May 1999 for VC Summer Nuclear Station.With

Monthly Operating Rept for May 1999 for VC Summer Nuclear Station.With

ML20196A039
Person / Time
Site:	Summer
Issue date:	05/31/1999
From:	Bell W, Gabe Taylor SOUTH CAROLINA ELECTRIC & GAS CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RC-99-0122, RC-99-122, NUDOCS 9906220108
Download: ML20196A039 (7)

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SCE&G. _} A SCANA COMPANY d- RC-99-0122 i

June 16, 1999 M I u.

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Document Control Desk

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,1 Attention: Director, Office of Resource Management N- q H> . . ..

? Gentlemen:

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Subject:

VIRGIL C. SUMMER NUCLEAR STATION Uhdw4erations' M DOCKET NO. 50/395 OPERATING LICENSE NO. NPF-12 MAY MONTHLY OPERATING REPORT j' w  ; Enclosed is the May 1999 Monthly Operating Report for the Virgil C. Summer

" ' L Nuclear Station Unit No.1. This submittal is made in accordance with the Jrequirements of Technical Specifications, Section 6.9.1.10.

m i$ath!(ac!ino Dedrk & Gas (oiif there are any questions, please call me at your convenience.

u VqilC Sanmer Nudear StationV

' Very truly yours, c P.O.8cx 68 iJenkinsvire SoshCoN5no d

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n m, Lc: S. A. Byrne Paulette Ledbetter

',  :] W. F. Conway  !NPO Records Center A4 '

1) R. R. Mahan (w/o Attachment) J&H Marsh & McLennan Q1 7 R. J. White William G. Wendland (ANI)

W , L.A.Reyes Pat Haught (Westinghouse)

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> .l L. M. Padovan RTS (RR 4100) 3 R. M. Fowlkes File (818.03-1)

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,, , / NRC Resident inspector DMS (RC-99-0122)

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9906220108 990531 M M wm se. ,.l$)l g) ADOCK 05000395 PDR PDR }{

.n u e f NUCLEAR EXCELLENCE - A SUMMER TRADITIONI

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Director, Office of Resource Management May Monthly Operating Report

'Page 1-ATTACHMENT I l AVERAGE DAILY UNIT POWER LEVEL l

DOCKET NO. 50/395 UNIT - V. C. SUMMER I DATE 6/11/99 COMPLETED BY W.~H. BELL TELEPHONE (803) 345-4389 MAY 1999 DAY AV) R GE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 0 17 688

2. 0 18. 0

3. 0 19. 382

4. 0 20. 872 I

5. 0 21. 934

6. 0 22. 967

7. 0 23. 970

8. 0 24. 967

9. 0 25. 963

10. 0 26. 961

11. 83 27, 960 12, 211 28. 967

13. 274 29. 978

14. 397' 30. 980

15. 444 -31. 978

16. 679

. Director, Office of Resource Management

'May Monthly Operating Report Page 2

'l ATTACHMENT II OPERATING' DATA REPORT DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 6/11/99 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 )

OPERATING STATUS:

{

1. Reporting Period: May 1999 Gross Hours in Reporting Period: 744

2. Currently Authorized Power Level (MWt) : 2900 Max. Depend. Capacity (MWe-Net) : 954 Design Electrical Rating (MWe-Net): 963

.3. Power Level to Which Restricted (If Any) (MWe-Net) : N/A

~4. Reasons for Restrictions: N/A THIS MONTH YR TO DATE CUMULATIVE

5. Number or nours Reactor Critical 504.8 2719.1 112317.8

6. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

7. Hours Generator on Line 463.7 2675.0 110732.3

8. Unit Reserve Shutdown Hours 0.0 0.0 0.0

9. Gross Thermal Energy Generated (MWH) 1076013 7380737 294898004

10. Gross Electrical Energy (MWH)- 369580 2549900 98774629

11. Net Electrical Energy Generated (MWH) 351685 2452687 94231227

- 12. Reactor Service Factor 67.8 75.1 83.1

13. Reactor Availability' Factor 67.8 75.1 83.1

14. Unit Service Factor 62.3 73.8 82.0

15. Unit Availability Factor 62.3 73.8 82.0

16. Unit Capacity Factor (Using MDC) . 49.5 71.1 77.7 17.L Unit Capacity Factor (Design MWe) 49.1 70.5 76.6 18.. Unit Forced Outage Rate 5.4- 1.0 3.7

19. - Shutdowns Scheduled Over Next 6 Months (Type, Date & Duration of Each) :

NONE

20. If Shut Down at End of Report Period, Estimated Date of Startup: N/A

21. Units in Test Status (Prior to Commercial Operation): N/A I

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s Director, Office of Resource Management 1May Monthly Operating Report Page 3 I

ATTACHMENT III l

' UNIT SHUTDOWNS AND POWER REDUCTIOF.S I

DOCKET NO. 50/395 UNIT V. C. SUMKER I ,

DATE 6/11/99 1 COMPLETED BY W. H. BELL l TELEPHONE (803) 345-4389 MAY 1999 NO. DATE TYPE DURATION REASON METHOD CORRECTIVE ACTION /COf14ENIS 1 990403 S 253.8 C 1 COMPLETE REFUEL 11 j 2 990513 F 0.8 B 1 MAINTENANCE ON MG VOLT. REGULATOR 3 990518 F 25.7 A 2 MAIN TURBINE HI VIBRATION

'1.0 REASON A: Equipment Failure.

B: Maintenance or Test C: Refueling.

D: Rcgulatory Restriction

-E: Operator Training and License Examination F: Administrative G: Operational Error H: Other (Explain) 2,0 -METHOD 1: Manual 2: Manual Scram 3: Automatic Scram 4: Continuation (Use initial Date) 5: Power Reduction (Duration 0.0) 9; other (Explain)

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Director, Office of Resource Management May Monthly Operating Report

- Page 4 ATTACHMENT IV NARRATIVE

SUMMARY

OF OPF. RATING EXPERIENCE DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 6/11/99 COMPI.ETED Ef W. H. BELL TF.LEPEONE (803) 345-4389 i MAY 1999 AT THE BEGINING OF THE MONTH THE UNIT WAS SHUT DOWN FOR THE 11TH REFUELING OUTAGE. THE REACTOR WENT CRITICAL AT 06:05 ON 5/10/99 AND THE 'BMAKER WAS FIRST CLOSED AT 13:48 ON 5/11/99. ON 5/13/99 POWER WAS REDUCED FROM 30% TO 20% AND AT 03:25 THE ' BREAKER WAS BRIEFLY OPENED TO PERMIT MAINTENANCE ON THE MAIN GENERATOR REGULATOR AND TnEN CLOSED AT 04:10 THE SAMZ DAY.

AT 00,41 ON 5/18/99 WHILE AT 82% POWER THE REACTOR WAS MANUALLY TRIPPED DUE TO HIGH BEARING VIBRATION ON THE MAIN HIGH PRESSURE TURBINE. AT 17:45 OF THE SAME DAY THE REACTOR WENT CRITICAL AND

,.ON 5/19/99;AT 02:26 THE GENERATOR BREAKER WAS CLOdED. AT 17:30 ON 5/21/99 THE UNIT ACHIEVED 100% POWER WHERE IT REMAINED FOR THE REST OF THE MONTH.

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MISCELLANEOUS OPERATING STATISTICS THRU Fby 1999 VIRGIL C SUMMER NUCLEAR STATION, UNIT 1 OPERATING STATUS Currently Authorized Power Level (MWt): 2900 Max. Depend. Capacity (MUe-Net): 954 Design Electrical Rating (MWe-Net): 963 Gross Maximum capacity (MWe): 1001 Gross Dependable Capacity (MWe) : 1000 LIFE FISCAL YEAR 12 MONTH 3 MONTH OF PLANT TO DATE TOTALS TOTALS l

l Number of Hours Reactor Critical 119652.6 7136.1 7856.1 1303.1 (

Reactor Reserve Shutdown Hours 0.0 0.0 Hours Generator on Line 117731.7 1092.0 7812.0 1259.0 Unit Reserve Shutdown Hours 0.0 0.0 Gross Thermal Energy Generated (MWH) 309508539 13939262 22024922 3294070 Gross Electrical Energy (MWH) 103555139 6862720 7579650 1136690 Net Electrical Energy Generated (MWH) 98723953 6600547 7290395 1090321 Reactor Service Factor 82.5 88.8 Reactor Availaoility Factor 82.5 88.8 Unit Service Factor 81.2 88.2

• Unit Availability Factor _

81.2 88.2 67.2 51.3

. Unit Capacity Factor (Using MDC) 76.0 86.0 88.1 52.3 Unit Capacity Factor (Design MWe) 74.8 85.2 Unit Forced Outage Rate 4.0 0.4 0.3 Forced Outage Hours 4954.3 26.5 26.5 26.5 l Scheduled Outage Hours 22275.0 921.5 921.5 971.5 Equipment Forced Outages: 2 2 .

Equivalent Unit Derated Hours

• 400.45 304.30 Equivalent Seasonal Derated Hours

• 21.22 0.47 Equivalent = Availability Factor

• 84.4 43.2 Equivalent Unit Derated Hours

• for Month: 283.5 Equivalent Seasonal Derated Hours

• for Month: 0.5 Equivalent Availability Factor

• for Month: 24.2 Equivalent Availability Factor

• for 36 months: 89.3 Year-to-Date Equivalent Availability Factor *: 65.3 Equipment Forced Outages per 1000 Critical Hours: 0.255 Equipment Forced Outages Year-to-Date: 2 Total Forced Outages Year-to-Date: 2

• Based on INPO Detailed Descriptions of Overall Performance Indicators and Other Indicators - December 1987

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MONTH: MAY 1999 HOURS GENERATOR ON LINE: 744 UNIT AVAILABILITY FACTOR: 100%

V. C. SUMMER, UNIT 1 MONTHLY OUTAGE REPORT FO.R MAY. 1999 OUTAGE 1 START ! END  !. HOURS iTYPE! REASON FOR OUTAGE ! CORRECTIVE ACTION NO. l TIME I TIME IDURATION!  !  !

1 l- -1 1  !  !

1 04/03/99 04/30/99 253.8 S 11TH REFUELINING COMPLETE REFUELING 2 05/13/99 05/13/99 .8 F MAINT.MG REGULATOR MAINT. COMPLETED 3 05/18/99 05/19/99 25.7 F MAIN HI-PRES TURBINE MAINT. COMPLETED

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