ML20113F294

Monthly Operating Rept for Dec 1984

ML20113F294
Person / Time
Site:	Summer
Issue date:	12/31/1984
From:	Dixon O, Loignon G SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Barry L NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
NUDOCS 8501230594
Download: ML20113F294 (5)

Text

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Director, Office of Resource :Ma'nagement December-Monthly Operating Report Janua ry. ' 14,1 1985

~

ATTACHMENT I-AVERAGE 1 DAILY UNIT POWER LEVEL DOCKET NO.

50/395 UNIT V.

C. SUMMER I-

>DATE 01/11/85 i

COMPLETED BY G. A.,Loignon TELEPHONE -(803) 345-5209 MONTH DECEMBER 1984 j

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

(MWe-Net) 1.

-14

17. -

-32 2.

-12 18.

-33 3.

-14

.19. -

-32 4.

-17 20.

40 5.

-13 21.

226 6.

-14 22.

'388 7.

-28 2 3'.-

510 8.

-28

'2 4.

645-9

-36 25.

592 10.

-19 2 6.'

658 1 1. -

-16 27

-329-12.

-18 2 8. -

322

s 13.

-35 29.

644 a

14.

'-35 30.

648-e 15.

-34

'31.

651 16.

-32 1-l r

i I

e5jij$foNfy R

.i h

4 1

.w.

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Director," Office of Resource Management i December. Hunthly Operating Report

Page 2; January 14,' 1985

4 AITACHENT II OPERATING DATA REPORT DOCKET NO. 50/395 UNIT V. C. -SUMER I DATE 01/11/85-COMPLETED BY G. A. Loignon-TELEPHONE (803) 345-5209 OPERATING STATUS ~

1. Reporting Period:

DECEMBER 1984 Gross Hours in Reporting Period: 744

2. Currently Authorized Power Level (MWt):

-2775 Max." Depend. Capacity (We-Net):

885 Design Electrical Rating (MWe-Net):

900 e

3. Pover Level-to which restricted-(If Any)(Ne-Net): N/A

4. Reasons for Restrictions (If Any): N/A j-1HIS MON 111 YR TO DATE CUMULATIVE I

5. Number of Hours Reactor Was Critical 299.9 5,553.4 5,553.4

6. Reactor Reserve Shutdown Hours 0

0 0

7. Hours Generator on.Line' 270.1 5,365.7

'5,365.7

8. Unit Reserve Shutdown Hours,..

0:

0

-0

9. Gross Thermal Energy Generated,(W H)-

455,882

10. Gross Electrical Energy Generated' (WH) 145,810

~ 13,332,586

-13,332,586-1 4,432,149' 4,432,149 o

11. Net Electrical Energy Generated (W H) 124,707-4,192,096 4,192,096-

12. Reactor Service Factor 40.3 61.2 63.2-13.-Reactor Availability Factor 40.3

- 6%2 63.2

-14. Unit Service Factor-..

36.3 61.1 61.1

15. Unit Availability Factor 36.3-61.1 61.1

16. ~ Unit Capacity. Factor (Using 100) 18.9 53.9 53 9-i.

17.: Unit Capacity Factor (Using Design MWe) 18.6 53.0 53.0-L18. Unit' Forced Outage Rate 2.2 10.8 10.8-

19. _ Shutdowns' Scheduled. 0ver Next 6 Months (Type, Date, and Duration of Each):

N/A

20. If Shut Down at' End of Report Period, Estimated Date of Startup: -N/A1

21. Units'in Test Status.(Prior to Conumerical Operation):

FORECAST ACHIEVED Initial Criticality

-N/A 10-22-82 Initial Electricity N/A-11-16-82

• Commercial Operation N/A-101-01-84

-t

Director,iOffice of Resou'rce. Management' Dscember Monthly Operating Report

<Pcge 3:

' January:14, _ 1985

' ATTACHMENT III

. UNIT SHUTDOWNS.AND POWER-REDUCTIONS DOCKET.NO.

50/395-UNIT

'V.-C.

SUMMER I--

.DATE

'01/11/85 COMPLETED - ~ BYL G. A.-Loignon' TELEPHONE (803) 345-5209 (1)

METHOD 0F (2)

TYPE SHUTTING DOWN.

^

F: FORCED DURATION THE. REACTOR OR CORRECTIVE ACTIONS /

NO.

-DATE

'S: SCHEDULED (HOURS)

REASON REDUCING POWER.

COMMENTS; 1.1 840928 S-467.5 C

4

11) Re fueling, Testing "B"

Reactor Coolant Pump Breaker.

12 841220 S

0.3 B

1

12) Turbine Overspeed' Test.

13 841227

-~ F 6.1 G-3

13) neactorfTrip Causad-By Improper

. Connection'Of! Test:

Instrumentation.

l V

Y h

1--

's v.

-f.

-.r

. ~,. -. -

[.

p

/

Director, Office of Resource Management December. Monthly Operating Report Page 4 January 14, 1985

. ATTACHMENT IV NARRATIVE

SUMMARY

OF OPERATING EXPERIENCE The Virgil C. Summer Nuclear Station, Unit No.

1, remained shut down for refueling at the beginning of December, 1984.

On December 4, 1984, at 1020 hours0.0118 days <br />0.283 hours <br />0.00169 weeks <br />3.8811e-4 months <br />, with the Plant in Mode 5, the Residual Heat Removal System Letdown Flow Control Valve failed closed as a result of the loss of its associated 120V AC power source.

Residual Heat Removal (RHR) suction relief valves opened at least twice.. Pressurized Power Operated Relief Valves. (PORV) were manually opened to maintain the system depressurized.

-Letdown was restored in approximately twenty minutes.

On December 15, 1984, at 1115 hours0.0129 days <br />0.31 hours <br />0.00184 weeks <br />4.242575e-4 months <br />, with the Plant in Mode 3, Pressurizer Spray Valve PCV-444D failed open when placed in automatic and would not close in manual control.

Reactor coolant pumps "A" and "C" were secured.

Air to PCV-444D was secured and the valve was closed.

L'owest system pressure Nas approximately 1985 psig.

As pressure ' increased the rate sensitive PORV PCV-444B opened momentarily at 2245 psig.

Alternate. spray was used to control pressure and "A" and "C" reactor coolant-pumps were restarted.

~

On December 18, 1984, at 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br />, the' reactor was taken critical to begin Core Cycle 2 low power physics testing.

On December 19, 1984, at 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br />, the Plant was placed in Mode 3 for reactor coolant pump breaker testing.

At 1736 hours0.0201 days <br />0.482 hours <br />0.00287 weeks <br />6.60548e-4 months <br />, a 120V AC inverter failed resulting in loss of its associated 120V AC Instrument Bus.

This resulted in an actuation of the Solid State Protection Systemidue to loss of power to the affected' Nuclear Instrumentation Channels.

Power was returned to. the panel at 1750 hours0.0203 days <br />0.486 hours <br />0.00289 weeks <br />6.65875e-4 months <br /> on December 19, 1984.

Subsequent to the Refueling Outage on December 20, 1984, at 1723 hours0.0199 days <br />0.479 hours <br />0.00285 weeks <br />6.556015e-4 months <br />, the generator was synchronized to the grid.

On Deuember125, 1984,.at 0648 hours0.0075 days <br />0.18 hours <br />0.00107 weeks <br />2.46564e-4 months <br />, with the unit at 75% power-the "A" Condensate Pump tripped.

Power was reduced to below 50% and "C" Condensate Pump was used to' control the transient.

On December 27, 1984, at.1055-hours and 75% power, an error in installing test equipment caused the feedwater Lregulating ~ valves to close.

A steam generator low level signal coincident with a steam / feed mismatch caused the reactor to trip.

On December 31,-1984,- the Plant was operating 1at 75% power.

r.. -

s SOUTH CAROLINA ELECTRIC & GAS COMPANY POSY OFFICE 764 COLuusiA. south CAnoLINA 29218

. O. W. DnioN. Ja, VICE PRESIDENT g

NUCLEAa OPEmatioNS January 14, 1985 Director, Office of Resource Management U.S. Nuclear' Regulatory Commission MNBB.7602.

Washington,.DC 20555 ATTN:

Mr. Learned W. Barry

SUBJECT:

Virgil C. Summer Nuclear Station Docket No.~50/395 Operating License No. NPF-12 December Monthly Operating Report

Dear:

Mr. Barry:

Please find enclosed the December 1984 Monthly Operating Report for'the:VirgilLC. 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.

Very truly yours, l

O. W. Dix CJM: GAL:0WD/ led-Attachment cc:

V. C. Summer C. L. Ligon (NSRC)

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

K. E. Nodland E. H. Crews, Jr.-

R. A. Stou gh E. C. Roberts

'G.

Percival-W. A. Williams,- Jr.

C. W. Hehl.

H..R. Denton J. ]B. Knotts,<Jr.

J. P. O'Reilly INPO Records Center Group Manahers ANI Library D. A. Nauman L. N. Carter O. S. Bradham-C. S. Gramling C. A. Price NPCF FILE t

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