ML19325D165

Monthly Operating Rept for Sept 1989 for VC Summer Nuclear Station Unit 1.W/891013 Ltr

ML19325D165
Person / Time
Site:	Summer
Issue date:	09/30/1989
From:	Bradham O, Haltiwanger J SOUTH CAROLINA ELECTRIC & GAS CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 8910190094
Download: ML19325D165 (5)

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, s y k South Carolina Electric & Gas Company: ollb S. Bradh$m e _' e .0 . vi-)'- ' P.O. Box 88 - Ves PresidInt Y/' ' , ,. i*:*i .hnkinsvilfe, SC 29065 ; Nucisar OperMions

**c "(803) 345-4040 pf >

SCE&G e sacana:n e, October 13, 1989 e

' ~ Document Control Desk

• U..S. Nuclear Regulatory Commission LWashington, DC .20555

' Attention:Dt Mr.' Learned W. Barry

SUBJECT:

Virgil C.: Summer Nuclear Station ;j' '

Docket No. 50/395 Operating License No. NPF September Monthly' Operating Report Gentlemen:1 i

L Please find enclosed.the September 1989 Monthly Operating Report for'the Virgil C. Summer Nuclear Station Unit'No. 1. This~ submittal:is.made in accordance with-

'l -the requirements of. Technical Specifications,;Section 6.9.1.10.

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

Very truly yours, y

/ ,

l

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l R

0. S. Bradham.

RJB/JNH/0SB: led Attachments

• c:- :D.-A. Nauman/0. W. Dixon, Jr./T. C. Nichols, Jr.

'E. C. Roberts '

W. A. Williams, Jr. J. B. Knotts, Jr. i S. D. Ebneter J. W. F11tter i J. J. Hayes, Jr. INP0 Records Center i

General _ Managers ANI Library ,

C. A.' Price Marsh & McLennan  ;

L R. B. Clary- NPCF L K. E. Nodland. NSRC J. C. Snelson RTS (RG890002)

R. L. Prevatte file (818.03-1) .

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, September Monthly Operating

Report o - Page 1- -

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. hr-X ATTACHMENT I

& AVERAGE DAILY UNIT POWER LEVEL

. DOCKET NO.:- 50/395' :I UNIT: -V. C. SUMMER I i f' DATE: 10/02/89i yJ COMPLETED BY: J. W. HALTIWANGER- ,

, TELEPHONE: (803)'345-4297;

<,- SEPTEMBER 1989 y tl 4

DAYAVERAGEiDAILYJPOWERLEVEL , DAY AVERAGE DAILY POWER. LEVEL (MWe-Net) (MWe-Net) -

1. 35 17. -16 q l 2. 341 18. 188 ;l

3. 823 19.- 145

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4.. -861 20. . 254 j

5. '862' 21, 707 -l 1

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862' 22. 707 i

,7.- 720 23. 878 l

8. 6 24. 807  !

.9. -30 25. 857 i

-10. -30 26. 879 j.

11. -30 27. 879

12. -27 28. 879-  ;

13. -24 __ 29. 879 j

14. -24 30. 881

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15. -29 l 1

16. -33 L ,

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• ! September MonthlyL0perating Report-

Page 2.

' ATTACHMENT-II. -!

OPERATING DATA REPORT 7

DOCKET NO.:. 50/395 .

N UNIT: V. C. SUMMER I DATE: 10/02/89 COMPLETED BY:: J. W. HALTIWANGER TELEPHONE: '(803) 345-4297

'0PERATING STATUS

1. Reporting Period:- September 1989

-Gross Hours in Reporting Period: 720 *

2. Currently. Authorized Power Level (MWt): 2775

Max.:. Depend.. Capacity-(MWeNet): 885

+ Design: Electrical Rating-(MWe Net):

900 ,

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

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

5.-Number of Hours Reactor Critical 539.0 5221.1 37957.7

6. Reactor Reserve Shutdown Hours 0.0 0.0 0.0 i 7.4 Hours Generator on Line 468.0 5064.1 37146.8

8. Unit Reserve Shutdown Hours- . 0.0 0.0 0.0 l

9. Gross Thermal' Energy Generated (MWH) 1068974 12364500 97213104 1

-10. Gross Electrical Energy (MWH) 341470 4036420 32183249 .

11' Het Electrical Energy Generated (MWH) 316996 3814599 30501757 4

'12. Reactor Service Factor 74.9 79.7 75.3  :

'.13. Reactor Availability Factor 74.9 79.7 75.3- '

14. Unit Service Factor 65.0 77.3 73.7 c15. Unit Availability Factor 65.0 77.3 73.7

-16. Unit ~ Capacity Factor-(Using MDC) 49.7 65.8 68.4

>17.. Unit Capacity Factor (Design MWe) 48.9 64.7 67.2

.18. Unit Forced Outage Rate 35.0 P2.7 8.9 a.

19. Shutdowns icheduled Over Next 6 Months (Type, Date & Duration of Each): 1 Refuelina. March 1. 1990. 80 Da_vs

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

1 j; 21. Units in Test Status (Prior to Commercial Operation): !!/_A l i'

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I Document Control Desk )

September Monthly Operating Report t Page 3 )

I j

i ATTACHMENT III j UNIT SHUTDOWNS AND POWER REDUCTIONS 1

DOCKET NO.:

UNIT:

50/395 V. C. SUMMER'I l

l DATE: 10/02/89 .!

COMPLETED BY: J. W. HALTIWANGER l TELEPHONE: (803) 345-4297 l t

SEPTEMBER 1989

.e. ..

Method of TYPE Shutting No. Date F or S Duration Down the Corrective Actions /

Reason Forced or (Hours) Reactor or Comments Scheduled Reducing Power 8- 890825 F 15.5 A 4 Replace Pressurizer Safety Valve 9 890908 F 232.2. A 1 Repair MSIV Test Circuit 10- 890919 F 4.3 A 1 Restore Condenser Vacuum

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l Document Control Desk I September Monthly Operating Report Page 4 -

ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE ,

[ l DOCKET NO.: 50/395 UNIT: V. C. SUMMER I  ;

DATE: 10/02/89 COMPLETED BY: J. W. HALTIWANGER TELEPHONE: (803) 345-4297 SEPTEMBER 1989 On September 1, at 0635 hours0.00735 days <br />0.176 hours <br />0.00105 weeks <br />2.416175e-4 months <br />, the reactor went critical; at 1630 hours0.0189 days <br />0.453 hours <br />0.0027 weeks <br />6.20215e-4 months <br />, the

-generator was placed on.line. NOTE: The unit had been shutdown for replacement of a pressurizer safety valve.

On-September 7, with'the plant at 100 percent power, a power reduction was commenced to repair a condenser tube leak. During the repair activity, a faulty

. test circuit on the Main Steam Isolation Valve (MSIV) was identified. On September 8, at 0534 hours0.00618 days <br />0.148 hours <br />8.829365e-4 weeks <br />2.03187e-4 months <br />,'the generator was taken off line and the reactor was taken subcritical at 0830 hours0.00961 days <br />0.231 hours <br />0.00137 weeks <br />3.15815e-4 months <br /> due to inoperable MSIVs. The MSIV test circuit was repaired. On September 15 at 1457 hours0.0169 days <br />0.405 hours <br />0.00241 weeks <br />5.543885e-4 months <br />, the reactor was taken critical. After holding at low power to clean up secondary chemistry, the generator was placed on line.at 2149 hours0.0249 days <br />0.597 hours <br />0.00355 weeks <br />8.176945e-4 months <br /> on September 17.

On September 19 at 0249 hours0.00288 days <br />0.0692 hours <br />4.117063e-4 weeks <br />9.47445e-5 months <br />, the turbine tripped from approximately 36 percent power due to loss of condenser vacuum. A missing light bulh associated with the circulating water isolation valve indicator resulted in the false indication of the associated valve and loss of circulating water to the condenser. The generator was L

placed back on line at 0705 on the 19th.

At 0300 on September 22, 1989, a Notification of Unusual Event was declared due to Hurricane Hugo with winds gusting to approximately 70 miles per hour in the immediate vicinity. The NUE was downgraded at 0455 on September 22, 1989. l The plant was operating at 100 percent power at the end of September, b  !