RC-98-0153, Monthly Operating Rept for July 1998 for VC Summer Nuclear Station,Unit 1

Monthly Operating Rept for July 1998 for VC Summer Nuclear Station,Unit 1

ML20237B181
Person / Time
Site:	Summer
Issue date:	07/31/1998
From:	Bell W, Gabe Taylor SOUTH CAROLINA ELECTRIC & GAS CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
RC-98-0153, RC-98-153, NUDOCS 9808180087
Download: ML20237B181 (6)

Text

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e South Carolina Electric & Gas Company Gary J.T:ylor x r tions num c-- 3.,*in vme, sc 2soes (803) 345-5209 (803) 635-1461 August 11, 1998 RC-98-0153 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 JULY MONTHLY OPERATING REPORT Enclosed is the July 1998 Monthly Operating Report for the Virgil C. Summer Nuclear Station Unit No.1. This submittal is 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.

Very truly yours, f 0' $& 3 ,.

Gary J. Taylor RKM/GJT Attachment c: W. F. Conway P. Ledbetter l-R. R. Mahan (w/o attachment)

R. J. White INPO Records Center J&H Marsh & McLennan

{/

1 L.A.Reyes William G. Wendland (ANI) .

L. M. Padovan Pat Haught (Westinghouse) , &1 S. A. Byrne. RTS (RR 4100)

R. M. Fowlkes . DMS (RC-98-0153)

NRG Resident inspector File (818.03-1)

J. B. Knotta Jr.

99081900e7 980731 PDR R ADOCK 05000395 PDR a

.L lv 007 NUCLEAR EXCELLENCE- A SUMMER TRADITIONI

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-Director, Office of Resource Management

, July Monthly Operating Report Page 1 ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50/30; UNIT V . C . SUML * ?. I DATE 8/ 7/9b COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 JULY 1998 DAY AVERAGE DAILY POWER i.EVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 955 17. 954 l 2. 954 18. 953

3. 954 19. 952

4. 954 20. 953

5. 953 21. 952 .

i

6. 953 22. 952

7. 953 23. 952 l B. 954 24. 952

9. 949 25. 943 1

10. 903 26. 710 11, 903 27. 744

12. 940 28. 798

13. 956 29. 789

14. 955 30. 744

15. 955 31. 744 l 16, 952 f I

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Director, Office of' Resource Management July Monthly Operating Report Page 2 i

ATTACEMENT II l OPERATING DATA REPORT I 1

l l

l DOCKET NO. 50/395 )

UNIT V. C. SUMMER I  !

DATE 8/ 7/98 COMPLETED BY W. H. BELL TELEPHONE (dO3) 345-4389 OPERATING STATUS ,

1. Reporting Period: July 1998 I Gross Hours in Reporting Period: 744 j

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  !

l 4. Reasons for Restrictions: N/A I

THIS MONTH YR TO DATE CUMULATIVE j i

5. Number of Hours Reactor Critical 744.0 4983.7 105925.7 i

6. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

7. Bours Generator on Line 744.0 4965.5 104384.3 b 8. Unit Reserve Shutdown Hours 0.0 0.0 0.0 l 9. Grecs Thermal Energy Generated (MWH) 2067361 14214472 277026103 i 10. Gross Electrical Energy (MWH) 705290 4901320 92617199

(. 11. Net Electrical Energy Generated (MWE) 677640 4718698 88308320

12. Reactor Service Factor 100.0 98.0 82.9

13. Reactor Availability Factor 100.0 98.0 82.9

14. Unit Service Factor 100.0 97.6 81.7 )

15. Unit Availability Factor 100.0 97.6 81.7

16. Unit Capacity Factor (Using MDC) 95.5 97.3 77.3

17. Unit Capacity Factor (Design MWe) 94.6 96.4 76.1

18. Unit Forced Outage Rate 0.0 2.4 3.9 i I

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

j N/A i

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

I

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

1 Director, Office of Resource Management I

' duly Monthly Operating Report Page 3 ,

ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 8/ 7/98 COMPLETED BY W. H. BELL TELEPHONE (803) 345-4389 JULY 1998 NO. DATE TYPE DURATION REASON METHOD CORRECTIVE ACTION / COMMENTS 2 7/25/98 F 0.0 A 5 "B" CIRCULATING WATER PUMP TRIPPED DUE TO A MOTOR FAULT; REPAIR MOTOR OFFSITE 1.0 REASON A: Equipment Failure B: Maintenance or Test C: Refueling D: Regulatory Restriction E: Operator Training and License Examination F: Administrative G: Operational Error H: Other (Explain) 2.0 FITHOD 1: Manual 2: Manual Scram 3: Automatic Scram 4: Continuation (Use initial Date) 5: Power Reduction (Duration 0.0)

9. Other (Explain) l l

l l

1 i

,pirector, Office of Resource Management July Monthly Operating Report Page 4 ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 8/ 7/98 COMPLETED BY W. B. BELL TELEPHONE (803) 345-4389

, JULY 1998 ON 7/9/98 AT 21:10 A LOAD REDUCTION TO APPROXIMATELY 95% POWER BEGAN IN SUPPORT OF PREPARATION FOR REPAIRS TO THE "D" FEED WATER BOOSTER PUMP. POWER WAS.STABLIZED AT APPROXIMATELY 94.5% AT 22:20.

ON 7/12/98 AT 06:20 REPAIRS HAD BEEN COMPLETED TO THE "D" FEED WATER BOOSTER PUMP AND POWER BEGAN TO BE INCREASED. POWER WAS RESTORED TO 100% AT 08:15.

ON 22

26 ON 7/25/98 THE "B" CIRCULATING WATER PUMP TRIPPED DUE TO l MOTOR ELECTRICAL PROBLEMS. POWER WAS REDUCED TO APPROXIMATELY 77%

TO COMPENSATE FOR THE FORCED, REDUCTION IN CIRCULATING WATER FLOW.

l- ON 7/27/98 AT 15:00 POWER WAS RAISED TO 80%. POWER WAS MAINTAINED BETWEEN 80% AND 85% FOR THE REMAINDER OF THE MONTD AND WAS CHANGED AS NEEDED TO ENSURE CIRCULATING WATER DISCHARGE TEMPERATURE LIMITS WERE NOT EXCEEDED.

s MISCELLANEOUS OPERATING STATISTICS THRU July 1998 1

VIRGIL C SUMMER NUCLEAR STATION, UNIT 1 OPERATING STATUS Currently Authorized Power Level (MWt): 2900 l

Max. Depend. Capacity (MWe-Net): 954 Design Electrical Rating (MWe-Net): 963 Gross Maximum Capacity (MWe): 1001 l

Gross Dependable Capacity (MWe) : 993

} LIFE FISCAL YEAR 12 MONTH 3 MONTH OF PLANT TO DATE TOTALS TOTALS l

l Number of Hours Reactor Critical 113260.5 744.0 7870.7 2208.0 Reactor Reserve Shutdown Bours 0.0 0.0

Hours Generator on Line ,

111383.7 744.0 7816.6 2208.0 Unit Reserve Shutdown Hours 0.0 0.0

, Gross Thermal Energy Generated (MWH) 291636638 2067361 22093909 6301906 i Gross Electrical Energy (MWH) 97397709 705290 7601060 2163920 Net Electrical Energy Generated (MWH) 92801046 677640 7313418 2081282 Reactor Service Factor 82.3 100.0 Reactor Availability Factor 82.3 100.0 Unit Service Factor 80.9 100.0 Unit Availability Factor 80.9 100.0 89.2 100.0 l Unit Capacity Factor (Using MDC) 75.4 95.5 87.8 98.8 74.3 Unit Capacity Factor (Design MWe) 94.6 Unit Forced Outage Rate 4.2 0.0 1.5 Forced Outage Hours 4927.8 0.0 121.5 0.0 Scheduled Outage Hours 21353.5 0.0 821.9 0.0 Equipment Forced Outages: 1 0 Equivalent Unit Derated Hours

• 125.64 35.34 Equivalent Seasonal Derated Hours

• 20.15 8.15 Equivalent Availability Factor

• 87.6 98.0 Equivalent Unit Derated Hours

• for Month: 32.8 Equivalent Seasonal Derated Hours

• for Month: 4.5 Equivalent Availability Factor

• for Month: 95.0 Equivalent Availability Factor

• for 36 months: 90.6 i

Year-to-Date Equivalent Availability Factor *: 96.3 Equipment Forced Outages per 1000 Critical Hours: 0.127 Equipment Forced Outages Year-to-Date: 1 Total Forced Outages Year-to-Date: 1 l

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

MONTH: JULY 1998

, HOURS GENERATOR ON LINE: 744 UNIT AVAILABILITY FACTOR: 100%

V. C. SUMMER, UNIT 1 MONTHLY OUTAGE REPORT FOR JULY 1998 OUTAGE ! START ! END  ! BOURS !TYPEl REASON FOR OUTAGE ! CORRECTIVE ACTION NO.  ! TIME  ! TIME  ! DURATION!  ! I l  !  !  !  !  !

NONE r

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