ML20197D121

Monthly Operating Rept for Feb 1986

ML20197D121
Person / Time
Site:	Summer
Issue date:	02/28/1986
From:	Loignon G, Nauman D SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Barry L NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8605140156
Download: ML20197D121 (5)

Text

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j Director, Office of Resource Management February Monthly Operating Report March 12, 1986 ATTACHMENT I AVERAGE DAILY UNIT POWER LEVEL l

DOCKET NO.

50/395 UNIT V. C. SUMMER I DATE 03/15/86 l

COMPLETED BY G. A.

Loignon TELEPHONE (803) 345-5209 MONTH FEBRUARY 1986 DAY AVERAGE DAILY POWER LEVsb DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

885 17 892 2.

742 18.

892 3.

-34 19 894 4

-33 20.

894 5.

130 21.

896 6.

591 22.

877 l

7.

862 23 881 8.

882 24, 896 l

9.

892 25.

896 10.

893 26.

894 11.

889 27.

892 l

12.

892 28.

878 13 891 l

14.

892 i

15.

880 16.

889 l

l 8605140156 860228 PDR ADOCK 05000395 R

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Director, Office of Resource Management February Monthly Operating Report Page 2 March 12, 1986 ATTACHMENT II OPERATING DATA REPORT DOCKET NO. 50/395 UNIT V. C. SUMMER I DATE 03/15/S6 COMPLETED BY G. A. Loignon TELEPHONE (803) 345-5209 OPERATING STATUS

1. Reporting Period:

FEBRUARY 1986

2. Currently Authorized Power Level (MWt): Gross Hours in Reporting Period: 672 2775 Max. Depend. Capacity (MWe-Net):

885 Design Electrical Rating (MWe-Net):

900

3. Power Level to which restricted (If Any)(MWe-Net):

4. Reasons for Restrictions (If Any):

_ N/A N/A

' MIS MONTH YR TO DATE CUMULATIVE

5. Number of Hours Reactor Was Critical 628.7 1,372.7 13,366.0

6. Reactor Reserve Shutdown Hours

7. Hours Generator on Line 0.0 0.0 0.0

8. Unit Reserve Shutdown Hours 614.9 1,358.9 12,999.2_

0.0 0.0 0.0

9. Gross Ihermal Energy Generated (L'H)

10. Gross Electrical Energy Generated (%'H) 1,638,382

- 3,677,538 33,515,104 548,29G 1,229,760

_11,160,Ti3

11. Net Electrical Energy Generated (MWH)

~

523,973

12. Reactor Service Factor

13. Reactor Availability Factor 93.6

- 1,178,127 10,600,759 96.9 70.5

14. Unit Service Factor 93.6 96.9 70.5

15. Unit Availability Factor 91.5 96.0 68.6

16. Unit Capacity Factor (Using MDC) 91.5 96.0 68.6 88.1 94.0 63.2

17. Unit Capacity Factor (Using Design MWe) 86.6 92.4 62.1

18. Unit Forced Outage Rate 8.5 4.0 7.9

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

_NONE

21. Units in Test Status (Prior to Connerical Operation):20. If Shut Dow N/A FORECAST ACHIEVED Initial Criticality N/A 10-22-82 Initial Electricity N/A Commercial Operation 11-16-82_

N/A 01-01-84

f Director, Office of Resource Management February Monthly Operating Report Page 3 March 12, 1986 ATTACHMENT III UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.

50/395 UNIT V.

C.

SUMMER I DATE 03/15/86 COMPLETED BY G.

A.

Loignon TELEPHONE (803) 345-5209 (1)

METHOD OF (2)

TYPE SHUTTING DOWN F: FORCED DURATION THE REACTOR OR CORRECTIVE ACTIONS /

NO.

DATE S: SCHEDULED (HOURS)

REASON REDUCING POWER COMMENTS 1

860202 F

57.1 B

3 1)

Tagout caused loss of condensate flow.

j SI occurred during restart.

~

Director, Office of Resource Management February Monthly Operating Report Page 4 March 12, 1986 ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE On February 1, 1986, the Virgil C. Summer Nuclear Station, Unit 1 was operating at approximately 100 percent power.

On Febi-uary 2, 1986 at 2005 hours0.0232 days <br />0.557 hours <br />0.00332 weeks <br />7.629025e-4 months <br />, with the reactor at approx *mately 88% power, a reactor trip was initiated by a turbine trip.

At the time of the trip, operators were rapidly reducing load in response to a loss of condensate flow.

A power supply tagout ir. advertently isolated power to the distribution panel supplying the condensate polisher bypass valve.

Upon loss of power, the valve failed closed and isolated condensate flow, resulting in a series of trips including deaerator lo-lo level, all main feedwater booster pumps, all main feedwater pumps, the main turbine and finally the reactor.

On February 3, 1986 at 0741 hours0.00858 days <br />0.206 hours <br />0.00123 weeks <br />2.819505e-4 months <br />, a reactor trip and Safety Injection (SI) occurred from approximately seven percent power, as a result of a steamline low pressure signal generated during the turbine roll-up.

A turbine control system malfunction caused a rapid increase in turbine speed and steam flow, and a rapid decrease in steam header pressure.

This pressure decrease actuated the steamline low pressure protection bistable due to rate compensation and initiated the reactor trip and SI.

On February 28, 1986, the plant was operating. at approximately 100 percent power.

ggp Electric & Gas Company Dan A.

a n

g Columtna. SC 29218 Noclear operations (803) 748-3513 SCE&G March 12, 1986 Director, Office of Resource Management U.S. Nuclear Regulatory Commission MNBB 7602 Washington, DC 20555 ATTN:

Mr. Learned W. Barry

SUBJECT:

Virg'l C. Summer Nuclear Station Docket No. 50/395 Operating License No. NPF-12 February Monthly Operating Report

Dear Mr. Barry:

Please find enclosed the February 1986 Monthly Operating Report for the Virgil C. Summer Nuclear Station Unit No.'1.

This submittal is made in accordance with the requirements of Technical Specification 6.9.1.10.

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

j e

tr y you'rs,

. Na man AMM: GAL: DAN / led Attachment c:

V. C. Summer K. E. Nodland O. W. Dixon, Jr./T. C. Nichols, Jr.

R. A. Stough E. H. Crews, Jr.

G. O. Percival E.

C. Roberts R. L. Prevatte J. G. Connelly, Jr.

J. B. Knotts, Jr.

W. A. Williams, Jr.

S. D. Hogge H. R. Denton INPO Records Center J. Nelson Grace ANI Library Group Managers L. N. Carter O.

S. Bradham R. E. Rainear D.

R. Moore NPCF 1

C. A. Price File C.

L. Ligon (NSRC)

R. M. Campbell s.