ML20236N986

Monthly Operating Rept for Oct 1987

ML20236N986
Person / Time
Site:	Summer
Issue date:	10/31/1987
From:	Haltiwanger J, Nauman D SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Barry L NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8711170091
Download: ML20236N986 (6)

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i Document' Control Desk'

October Monthly Operating Report Page 1 ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50/395 UNIT' V.'C.: SUMMER I DATE.

11/03/87' COMPLETED BY' J. W. HALTIWANGER-TELEPHONE

'(803) 345_4297 OCTOBER 1987 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

885 17.

763 1

2.

885 18.

887 3.

886 19.

888 l

4.

887 20.

888 i

5.

887 21.

887 6.

887 22.

887 7.

886 23.

887 8.

887 24.

889 9.

887 25.

891 10.

886 26.

890 11.

887 27.

891 12.

886 28.

892 13.

886 29.-

90 14.

866 30.

33 15.

206 31.

594 16.

206 L

8711170091 871031 DR ADOCK 050 5

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Document Control Desk October Monthly Operating Report Page 2 ATTACHMENTLII OPERATING DATA REPORT DOCKET NO.

50/395 i

i UNIT V. C.; SUMMER I DATE 11/03/87 1

o 1

COMPLETED BY J..W. HALTIWANGER j

TELEPHONE (803) 345-4297-OPERATING STATUS

1. Reporting Period:

October-1987 Gross Hours in Reporting PerivJ:

745

2. Currently Authorized Power Level (MWt):

2775 Max. Depend. Capacity (MWe-Net):.

885 3

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 l

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5. Number of Hours Reactor Critical 711.1 4758.4 25204.9

6. Reactor Reserve Shutdown Hours 0.0 0.0 0.0.

7. Hours Generator on Line 707.2 4672.9 24664.1

8. Unit Reserve Shutdown Hours 0.0 0.0 0.0 L

9. Gross Thermal Energy Generated (MWH) 1,8.10,508 12,331,529 64,725,849 l

10. Gross Electrical Energy (MWH) 606,290 4,064,430 21,473,889

11. Het Electrical Energy Generated (MWH) 579,269 3,850,034 204,33,311 1

12. Reactor Service Factor 95.4 65.2 75.0

13. Reactor Availability Factor 95.4 65.2 75.0 L

14. Unit Service Factor 94.9 64.0 73.4

15. Unit Availability Factor

.94.9 64.0 73.4 16.UnitCapacityFactor(UsingMDC) 87.9 59.6 68.7

17. Unit Capacity Factor (Design MWe) 86.4 58.6 67.6

18. Unit Forced Outage Rate 5.1 7.0 6.9 l

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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 Operation): N/A

I Document Control Desk October Monthly Operating Report Page 3 1

ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS-DOCKET NO.

50/395 UNIT V. C. SUMMER I J

DATE 11/03/87 COMPLETED BY J. W. HALTIWANGER i

TELEPHONE (803) 345-4297 l

OCTOBER 1987 I

Method of TYPE Shutting F or S Duration Down the Corrective Actions /

No.

Date Reason Forced or (Hours)

Reactor or Comments Scheduled Reducing Power i

l 8

371014 F

65.0 B

5 SURVEY / REWORK RBCU ELEC.

SPLICES l

9 871029 F

37.8 A

3 REPAIR XPN 7008 POWER SUPPLY l

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l Document Control Desk l

October Monthly Operating Report Page 4 ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE i

l DOCKET N0.

50/395 UNIT V. C. SUMMER I DATE 11/03/87-COMPLETED BY J. W. HALTIWANGER TELEPHONE (803) 345-4297 OCTOBER 1987 On October 1, 1987, V.C. Summer Station was operating at approximately 100 percent power.

i On October 14, at 2102 hours0.0243 days <br />0.584 hours <br />0.00348 weeks <br />7.99811e-4 months <br />, a power reduction was initiated to 30 percent power to allow access for the performance of surveillance / rework of some Reactor Building Cooling Unit electrical connections.

The plant was returned to full capacity at 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> on October 17.

On October 29, at 0313 hours0.00362 days <br />0.0869 hours <br />5.175265e-4 weeks <br />1.190965e-4 months <br />, the plant tripped from 100 percent power on Lo-lo sttem generator level coincident with steam / feed flow mismatch.

Both primary side and secondary side power operated relief valves actuated during the transient. A short circuit in Process Cabinet 7008 caused the power supply output breakers to open. This resulted in loss of certain control power including feedwater flow control. On October 30, at 0903 hours0.0105 days <br />0.251 hours <br />0.00149 weeks <br />3.435915e-4 months <br /> prior to startup (the reactor still subcritical, control rod shutdown banks withdrawn), a power loss to a source range cabinet occurred as a result of a blown fuse. The shutdown banks inserted whe' the associated bistable was actuated by the power loss.

Subsequent to making tne necessary repairs, the main generator was synchronized at 1658 hours0.0192 days <br />0.461 hours <br />0.00274 weeks <br />6.30869e-4 months <br /> on October 30.

On October 31, the plant was operating at 100 percent power.

Documenti Control Desk September Monthly Operating Report Page 2-ATTACHMENT II OPERATING DATA REPORT DOCKET NO.

50/395 UNIT-

-V. C. SUMMER I:

DATE

-10/01/87.

COMPLETED BY J. W. HALTIWANGER TELEPHONE (803),3454297

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OPERATING STATUS

1. Reporting Period:

September 1987 Gross Hours in Reporting Period:

720.

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 T0 DATE CUMULATIVE

5. Number of Hours Reactor Critical 465.7 4047.3 24,493.8~

6. Reactor Reserve Shutdown Hours 0.0 0.0-0.0 l

7. Hours Generatur on Line 429.9 3965.7-

.23,956.9

8. Unit Reserve Shutdown Hours 0.0 0.0

'. 0.0'

9. Gross Thermal Energy Generated (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' Operation): N/A.

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1 10CFR50.36 nA n

gthgrogina Electric & Gas Company Cgumgiag29218 Nuclear Operations SCE&G November 12, 1987 l

l Document Control Desk U. S. Nuclear Regulatory Commission

(

Washington, DC 20555 ATTN: Mr. Learned W. Barry

SUBJECT:

Virgil C. Summer Nuclear Station-Docket No. 50/395 j

Operating License No. NPF-12 1

October Monthly Operating Report Gentlemen:

Please find enclosed the October 1987 Monthly Operating Report for the Virgil C.

{

Summer Nuclear Station Unit No. 1.

This submittal is made in accordance with l

l the requirements of Technical Specifications, Section 6.9.1.10.

1 Also enclosed is a revised Attachment II, " Operating Data Report" for September 1987 which required a correction to the number of hours the reactor was critical

{

during the month, l

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

A Very trul yours, i

Nauman i

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 INPO 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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