RC-98-0166, Monthly Operating Rept for Aug 1998 for VC Summer Nuclear Station,Unit 1.With

Monthly Operating Rept for Aug 1998 for VC Summer Nuclear Station,Unit 1.With

ML20151V608
Person / Time
Site:	Summer
Issue date:	08/31/1998
From:	Bell W, Gabe Taylor SOUTH CAROLINA ELECTRIC & GAS CO.
To:	NRC, NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RC-98-0166, RC-98-166, NUDOCS 9809150032
Download: ML20151V608 (7)

Text

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South Ctrolir.a Electric & C:s Company Giry J. Talor Cg Q A % AM GOmw Virgil C. Summer NIclear St tio2 P.O. Box 88 Vice President Nuclear Operations Jenkinsville, SC 29065 (803) 345-4344

, , (803) 345-5209 September 10, 1998 RC-98-0166 Document Control Desk U. S. Nuclear Regulatory Commission Washington, DC 20555 Attention: Director, Office of Resource Management Gentlemen:

Subject:

VIRGIL C. SUMMER NUCLEAR STATION DOCKET NO. 50/395 OPERATING LICENSE NO. NPF-12 AUGUST MONTHLY OPERATING REPORT Enclosed is the August 1998 Monthly Operating Report for the Virgil C. Summer Nuclear Station Unit No.1. This submittalis made in accordance with the requirements of Technical Specifications, Section 6.9.1.10.

If there are any questions, please call me at your convenience.

V t ours, G 10 GJT/nkk j Attachment gC c: S. A. Byrne Paulette Ledbetter W. F. Conway INPO Records Center R. R. Mahan (w/o Attachment) J&H Marsh & McLennan l R. J. White William G. Wendland (ANI) l L. A. Reyes Pat Haught (Westinghouse) l L. M. Padovan 121?}bU RTS (LER 980003) i R. M. Padovan File (818.07)

NRC Resident inspector DMS (RC-98-0166)

J. B. Knotts, Jr.

NUCLEAR EXCLLENCE- A SUMMER TRADITION!

9809150032 980831 E PDR ADOCK 05000395 R PDR 4

. i Director,-Office of Resource Management' August Monthly Operating Report Page 1 i

l ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO, 50/395 UNIT V. C. SUMMER I DATE 9/ 8/98 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 AUGUST 1998 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 745 17. 953  !

2. 744 18, 954 I

3. 773 19. 953

4. 797 20. 953 l 5. 798 21. 954

6. 797 22. 954

7. 797 23, 953

8. '798 24. 955

9. 912 25. 953

10. 954 26. 952

11. 953 27. 954

12. 953 28. 953

13. 953 29. 954 l

14. 954 30. 953

15. 954 31. 951

16. 954 l

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-&I Di' rector, Office of Resource Management August Monthly Operating Report Page 2 ATTACEMENT II OPERATING DATA REPORT DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 9/ 8/98 COMPLETED BY W. H. BELL ,

TELEPHONE (803) 345-4389 OPERATING STATUS

1. Reporting Period: August 1998 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 of Hours Reactor Critical 744.0 5727.7 106669.7

6. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

7. Hours Generator on Line 744.0 5709.5 105128.3

8. Unit Reserve Shutdown Hours 0.0 0.0 0.0 9.' Gross Thermal Energy Generated (MWH) 2058936 16273408 279085039

10. Gross Electrical Energy (MWH)- 702700 5604020 93319899

11. Net Electrical Energy Generated (MWH) 675215 5393913 88983535

12. Reactor Service Factor 100.0 98.2 83.0 13.l Reactor Availability Factor 100.0 98.2 83.0 14.. Unit Service Factor 100.0 97.9 81.8

15. Unit Availability Fac. tor 100.0 97.9 81.8

16. ' Unit Capacity Factor (Using MDC) 95.1 97.1 77.4

17. Unit Capacity Factor (Design MWe) 94.2 96.1 76.2

18. Unit Forced Outage Rate 0.0 2.1 3.9

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

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

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Director, Office of Resource Management August Monthly Operating Report Page 3 l

i ATTACHMENT III l UNIT SHUTDOWNS AND POWER REDUCTIONS I DOCKET NO. 50/395  !

UNIT V. C. SUMMER I DATE 9/ 8/98 1 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 AUGUST 1998 NO. DATE TYPE DURATION REASON METHOD CORRECTIVE ACTION / COMMENTS 2 7/25/98 F 0.0 A 4 "B" CIRCULATING WATER PUMP TRIPPED DUE TO A MOTOR FAULT; REPAIR MOTOR OFFSITE l l

1.0 REASON A: Equipment Failure B:-Maintenance or Test C: Refueling D: Regulatory Restriction E: Operator Training and License Examination f' ;

F: Administrative ,'

G: Operational Error ,

5 H: Other (Explain)  !

2.0 METHOD 1: Manual j 2: Manual Scram '

3: Automatic Scram 14: Continuation (Use initial Date) 5: Power Reduction (Duration 0.0) l

9. Other (Explain)

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Director,, Office of Resource Management

'*~~ Au@ust Monthly. Operating Report Page 4 j

-i ATTACEMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 9/ 8/98 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 AUGUST 1998

/ AT.THE-BEGINNING OF THE MONTH OF AUGUST THE PLANT WAS OPERATING AT 80% POWER DUE TO THE FAILURE OF THE "B" CIRCULATING WATER PUMP MOTOR.

FOR THE FIRST EIGHT DAYS OF.THE MONTH POWER WAS MAINTAINED AT BETWEEN. J 80% TO 85% IN ORDER TO REMAIN BELOW MAXIMUM ALLOWABLE CIRCULATING WATER DISCHARGE TEMPERATURE. AT 03:00 ON 8/9/98, THE "B" PUMP HAD BEEN REPAIRED AND OPERATIONS HAD COMMENCED RAISING REACTOR POWER.

POWER WAS RESTORED TO 100% AT 12:55 WHERE IT REMAINED FOR THE REMAINDER OF THE MONTH.

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MISCELLANEOUS OPERATING STATISTICS THRU August 1998 VIRGIL C SUMMER NUCLEAR STATION, UNIT 1 OPERATING STATUS Currently Authorized Power Level (MWt): 2900 Max. Depend. Capacity (MWe-Net): 954 Design Electrical Rating (MWe-Net): 963 Gross Maximum Capacity (MWe): 1001 Gross Dependable Capacity (MWe) : 993 LIFE FISCAL YEAR 12 MONTH 3 MONTH OF PLANT TO DATE TOTALS TOTALS Number of Hours Reactor Critical 114004.5 1488.0 7870.7 2208.0 Reactor Reserve Shutdown Hours 0.0 0.0 Hours Generator on Line 112127.7 1488.0 7816.6 2208.0 Unit Reserve Shutdown Hours 0.0 0.0 Gross Thermal Energy Generated CMWH) 293695574 4126297 21997722 6211957 Gross Electrical Energy (MWH) 98100409 1407990 7569720 2124920 Net Electrical Energy Generated 0MWH) 93476261 1352855 7282098 2042703 Reactor Service Factor 82.4 100.0 Reactor Availability Factor 82.4 100.0 Unit Service Factor 81.0 100.0 Unit Availability Factor 81.0 100.0 89.2 100.0 Unit Capacity Factor (Using MDC) 75.6 95.3 87.3 97.0 Unit Capacity Factor (Design MWe) 74.4 94.4 Unit Forced Outage Rate 4.2 0.0 1.5 ,

Forced Outage Hours 4927.8 0.0 121.5 0.0 1 Scheduled Outage Hours 21353.5 0.0 821.9 0.0 l Equipment Forced Outages: 1 0 i Equivalent Unit Derated Hours

• 162.34 69.64 ,

Equivalent Seasonal Derated Hours

• 20.15 14.90 I Equivalent Availability Factor

• 87.1 96.2 I Equivalent Unit Derated Hours

• for Month: 36.7 Equivalent Seasonal Derated Bours* for Month: 7.5 i Equivalent Availability Factor

• for Month: 94.1

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Equivalent Availability Factor

• for 36 months: 90.4 l Year-to-Date Equivalent Availability Factor *: 96.0 Equipment Forced Outages per 1000 Critical Bours: 0.127 1 Equipment Forced Outages Year-to-Date: 1 Total Forced Outages Year-to-Date: 1 j l

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

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MONTH: AUGUST 1998 HOURS GENERATOR ON LINE: 744 UNIT AVAILABILITY FACTOR: 100%

V. C. SUMMER, UNIT 1 MONTHLY OUTAGE REPORT FOR AUGUST 1998 OUTAGE ! START ! END  ! HOURS 1 TYPE! REASON FOR OUTAGE ! CORRECTIVE ACTION NO.  ! TIME i TIME  ! DURATION!  !  !

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