ML20235X362

Monthly Operating Rept for Sept 1987

ML20235X362
Person / Time
Site:	Summer
Issue date:	09/30/1987
From:	Haltiwanger J, Nauman D SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Barry L NRC, NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8710190327
Download: ML20235X362 (5)

Text

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Document' Control Desk September-Monthly Operating Report'

.Page l' ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50/395' UNIT V..C. SUMMER-I DATE 10/01/87-COMPLETED BY J. W. HALTIWANGER TELEPHONE (803) 345-5209 SEPTEMBER 1987 DAY' AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

885 17.

880 2.

777 18.

880 3.

-31 19.

882 4.

-33 20.

884 5.

-31 21.

884 6.

-31 22.

885 7.

-31 23.

885 8.

-31

'24.

815 9.

-31 25.

-34 10.

-31 26.

419 11.

-31 27.

866 12.

-32 28.

882 13.

-13 29.

883 14.

303 30.

884 15.

824 16.

880 Q

8710190327 870930

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..q ji Document Control Desk September Monthly Operating Report i

' Page 2.

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l ATTACHMENT II OPERATING DATA REPORT i

DOCKET N0..

50/395 UNIT-V. C. SUMMER I-DATE 10/01/87 COMPLETED BY J. W. HALTIWANGER TELEPHONE

.(803) 345-5209.

OPERATING STATUS

1. Reporting Period:

September 1987 i

Gross Hours in Reporting Period:

720 l

2. Currently Authorized Power Level (MWt):

2775

. Max. Depend.. Capacity (MWe-Net):

885 Design Electrical Rating (MWe-Net):

900-

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 765.7 4047.3 24,493.8

'6. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

7. Hours Generator on.Line 429.9 3965.7 23,956.9

8. Unit Reserve Shutdown Hours 0.0 0.0 0.0 9.GrossThermalEnergyGenerated(MWH) 1,113,384 10,501,021 62,895,341

10. Gross Electrical Energy (MWH) 366,600 3,458,140 20,867,599

11. Net Electrical Energy Generated (MWH) 341,689 3,270,765 19,854,042

12. Reactor Service Factor 64.7 61.8 74.6

13. Reactor Availability Factor 64.7 61.8 74.6

14. Unit Service Factor 59.7 60.5 72.9

15. Unit Availability Factor 59.7 60.5 72.9

16. Unit Capacity Factor (Using MDC) 53.6 56.4 68.3

17. Unit Capacity Factor (Design MWe) 52.7 55.5 67.1

18. Unit Forced Outage Rate 40.3 7.4 6.9

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

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

21. Units in Test Status (Prior to Commercial Gperation):

N/A q

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Document Control Desk September Monthly Operating Report Page 3 ATTACHMENT III-UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET.N0.

50/395 UNIT V. C. SUMMER I-

-j DATE 10/01/87 COMPLETED BY J. W. HALTIWANGER TELEPHONE (803)345-5209 SEPTEMBER 1987 Method of TYPE Shutting F or S Duration Down the Corrective Actions /

No.

.Date Reason Forced or (Hours)

Reactor or Comments Scheduled Reducing Power 6

870902 F

264.4 A

3 REPAIR MAIN GENERATOR BUSHING AND MAIN CONDENSER BOOT.

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7 870924 F

25.7 B

3 REPAIR R00 CONTROL POWER SUPPLY I

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' Document Control' Desk September Monthly Operating Report

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Page 4-i l

ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE DOCKET NO.

50/395

• UNIT V. C. SUMMER'I DATE 10/01/87 COMPLETED BY J. W. HALTIWANGER TELEPHONE (803) 345-5209 SEPTEMBER 1987 On September 1, 1987, V. C. Summer Station was operating at approximately 100

- percent power.

On ' September 2,1987, at 2109 hours0.0244 days <br />0.586 hours <br />0.00349 weeks <br />8.024745e-4 months <br />, tiie plant tripped from 100 percent power. A cracked Janerator bushing caused the generator stator to fault to ground. -After

- repair of the bushing, an air leak was discovered in the main condenser boot seal

. which required maintenance in order to draw a condenser vacuum. The reactor was taken critical on September 12, at 1552 hours0.018 days <br />0.431 hours <br />0.00257 weeks <br />5.90536e-4 months <br />, and the generator was back on line September 13 at 2131 hours0.0247 days <br />0.592 hours <br />0.00352 weeks <br />8.108455e-4 months <br />. The plant returned to 100 percent power at 0915 hours0.0106 days <br />0.254 hours <br />0.00151 weeks <br />3.481575e-4 months <br />, on September 15.

On September 24, 1987, at 2210 hours0.0256 days <br />0.614 hours <br />0.00365 weeks <br />8.40905e-4 months <br />, the plant tripped from 100 percent power. A control rod drive system redundant power supply was being removed from service for repair. When the neutral was disconnected, the redundant power supply also lost its neutral which caused 12 control rods to drop.

This resulted in a negative rate reactor trip. The power supply was restored and the reactor was critical on September 25, at 1740 hours0.0201 days <br />0.483 hours <br />0.00288 weeks <br />6.6207e-4 months <br />. The generator was synchronized at 2356 hours0.0273 days <br />0.654 hours <br />0.0039 weeks <br />8.96458e-4 months <br /> on September 25. The plant was back at 100 percent power at 0545 hours0.00631 days <br />0.151 hours <br />9.011243e-4 weeks <br />2.073725e-4 months <br />, on September

. 27.

- On September 30, 1987, the plant was operating at approximately 100 percent power.

I d

10CFR50.36 g.

Sogth na Electric & Gas Company n.Na m n Columbia, SC 29218 Nuclear Operations (803) 748-3513 SCE&G

-,n October 12, 1987

-s Document Control Desk U. S. Nuclear Regulatory Commission e c Washington, DC 20555 C E$

o ATTN: Mr. Learned W. Barry i

> c

SUBJECT:

Virgil C. Summer Nuclear Station g Docket No. 50/395 e

Operating License No. NPF-12 o

September Monthly Operating Report Gentlemen:

Please find enclosed the September 1987 Monthly Operating P. aport for the Virgil C. Summer Nuclear Station Unit No. 1:

ibis 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 trul

urs, h

. Nauman AMM:JWH: DAN /bjh Attachments pc:

0. W. Dixon, Jr./T. C. Nichols, Jr.

K. E. Nodland E. C. Roberts J. C. Snelson

0. S. Bradham G. O. Percival D. R. Moore R. L. Prevatte W. A. Williams, Jr.

J. B. Knotts, Jr.

T. E. Murley INP0 Records Center J. Nelson Grace ANI Library Group Managers L. N. Carter W. R. Baehr R. E. Rainear C. A. Price Marsh & McLennan R. B. Clary RTS W. R. Higgins NPCF C. L. Ligon (NSRC)

File R. M. Campbell, Jr.

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