ML19343A355

Monthly Operating Rept for Aug 1980

ML19343A355
Person / Time
Site:	Sequoyah
Issue date:	09/02/1980
From:	Ballentine J, Huber J TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML19343A354	List: ML19343A353 ML19343A355
References
NUDOCS 8009170262
Download: ML19343A355 (9)

Text

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O TENNESSEE VALLEY' AUTHORITY DIVISION OF NUCLEAR P0kT.R SEQUOYAH NUCLEAR PLANT MONTHLY OPERATING REPORT AUGUST 1, 1980 - AUGUST 31, 1980 DOCKET NUMBER 50-327 LICENSE NUMBER DPR-77

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. c TABLE OF CONTENTS Operations Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Significant Operational Events . . . . . . . . . . . . . . . . . . . . . .2 Average Daily Unit Power Level . . . . . . . . . . . . . . . . . . . . .3 Operating Data Report . . . . . . . . . . . . . . . . . . . . . . . . . .4 Unit Shutdown and Power Reduction . . . . . . . . . . . . . . . . . . .5 Plant Maintenance Summary . . . . . . . . . . . . . . . . . . . . . . . .6 Outage Maintenance Summary . . . . . . . . . . . . . . . . . . . . . . . .7

e Operations Summary August 1980 The following summary describes the significant operational activities during the reporting period. In support of this summary, a chronological log of significant events is included in this repo-t.

There were twenty-four Licensee Event Reports and one Special Report 80-3, oit ECCS injection to RCS.

There were three scrams during August of which two were manual scrams.

At the end of August, the reactor was in mode 5. Modification and mainte-nance are being. performed while the plant awaits NRC approval for a full power license.

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Significant Operational' Events 4

Date Time Event 8/01/80 0455 RCS in mode 4 at 200 F to 360 psig.

8/02/80 2203 Completed pulling shutdown banks A, B, C, D rods.

'8/05/80 1336 RCS in mode 3.

I 8/06/80 1655 Reactor was critical.

8/06/80 1701 Reagtor was manually scramed at 5.0 x 10 amps because the rods failed to move in either manual or bank select.

8/07/80 0019 Started pulling the shutdown banks.

8/07/80 0116 Reactor was critical.

8/12/80 -0301 Reactor tripped on low steam generator

1. 2 level.

8/12/80 1643 Started pulling the shutdown banks.

8/12/80 2225 Reactor was critical.

8/14/80 0336 Reactor was manually scrammed because of a continuous rod withdrawal.

8/14/80 0623 RCS was in mode 3.

8/15/80 0950 RCS was in mode 5. '

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-327 U? TIT I DATE COMPLETED 13Y James M. Huber TELEPHONE (615) 842-0295 MONTil August 1980 DAY AVERAGE DAILY POWER LEVEL DAY. AVERAGE DAILY POWER LE'EL

- (MWe-Net) (MWe-Net) 1 0 0 17 2 0 18 0 3 0 19 0 4 0 0 20 5 0 0 21 6 0 0 22 7 0 0 23 8 0 0 24 9 0 0 25 10 0 26 0 11 0 27 0 12 0 23 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0 INSTRUCTIONS On this format, list the average daily unit power level in MWe-Net for each day in the reperting menth. Ccmpute to the nearest whole megawatt.

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(9/77)

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OPERATING DATA REPORT DOCKET NO. 50-327 DATE COMPLETED BY James M. Huber TELEPl{0NE (615) 842-0295 OPERATING STATUS . -

1. Unit Name: Sequ)yah 1

2. Notes Reporting Period: August LY5u

3. Licensed Thermal Power-(:fWt): 1/u=

4. Nameplate Rating (Gross MWe): _ 1Z20.)

5. Design Electrical Rating (Net MWe): 1148-

6. Maximum Dependable Capacity (Gross MWe):

7. 1185 Maximum Dependable Capacity (New MWe): 1148  !

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:

9. Power Level To Which Restricted, If Any (New MWe):

10. Reasons For Restrictions, If Any:

• Low Power Physics Testing This Month Yr-to-Date Cumulative

11. Ilours in Reporting Period 744 4416 4416

12. Number of Hours Reactor Was Critical 131.03-~ 322.64 322 54

13. Reactor Reserve Shutdown Hours 0 0 0

14. ~ Hours Generator On-Line 0 18.35 18.35 _

15. Unit Reserve Shutdown Hours 0 0 0

16. Gross Thermal Energy: Generated (HWII) 16486.07 28842.26 28842.26

17. Gross Electrical Energy Generated (MWH) 0 230 230

18. L Net Electrical: Energy Generated (NWil) 0 0 0

19. Unit Service Factor ,,

N/A N/A N/A

20. . Unit Availability Factor

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21. N/A N/A N/A Unit Capacity Factor (Using MDC Net) N/A N/A N/A

22. Unit Capacity Factor.(Using DER Net) N/A N/A N/A 12 3 . -Unit Forced Outage Rate N/A N/A

24. N/A l Shutdowns Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

25.

26.

If Shut Down At End of Report Period, Estimated Date of Startup: 9-19-80 Units In Test-Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY 7-04-80 7-05-80 INITIAL ELECTRICITY a-zi-ou i-zz-c0 COMMERCIAL 0PERATION 10-uJ-so (9/77) 4

UNIT SliUTDOWieS AND POWER REDUCTIONS DOCKET NO. 50-327

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UNI T. NA!!E _ ___ Se uoyah 1 .

DATE 2 80 - -

C0t!Pl.ETED BY - James C lluber REPORT ff0NTil August 1980 TELEPHO'JE -~(615)~84230293 7 ~~

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! c^ N $ co 8 Licensee c Cause & Correct.ive-No. 'Date.  %; 3$ '@ bSj Event @ i, , E '^c, Action to lhiffl g ~

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{] Report #

Prevent Recurrence l

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I L C 5 8-06-80 !F 7.25; A

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N/A RB CRDRVE I The RO manually Tripped Reactor the.: emetroi rods failed to move in manual control.

l i 6 8-12-80 F 19.40 G j 3 N/A IA INSTRUE j Unit operator was lowring S/G #2 level to 33% l l

i l  ! land100GPMforTVA22 Preop. As level reached

.  ! 33% S/G blowdown was closed and AFW flow in-

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' This . flow increase caused S/G level j

! tocreased.

shrink. Additional flow was added to.try i to I  ; , ' and catch level decrease but Rx tripped on '

t low 5/G 1evel.

1 7 N/A 8-14-80 lF 428.40j A ! 1 RB CRDRVE  ; Continuous rod withdrawal. The rod control .;

lwas in manual - when the rod thruster was i  ;

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? i jmoved to (out), the rod continued to step out

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.when released.

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I 2 3 4 F: Forced Reason: t!cthod:

S: Scheduled Exhibit G-instructions A-Equipment Failure (Explain) 1-flanua l for Prepa rat. ion < r Data B-itaintenance or Test 2-flanua l Scram. Entry Shoets for Licensee C-Refueling 3-Automatic Scram. Event Report (LI;R) l'ile (tilll!Ef;-

D-Regulatory Restriction 4-Other (Explain) 0161)

E-Operator Training & License Examination F-Administrative G-Operational Error (Explain) 5 (9/77) H-Other (Explain) Exhibit. I-Same Source

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. Plant Maintenance Summary The following significant maintenance items were completed during the' month of August:

1. Replaced the battery for diesel generator IA-A.

'2. Installed safety injection pump 2A-A. This pump had been the 1A-A SI pump which was damaged. Parts were not available immediately for rebuilding the IA-A pump and the 2A-A pump was used instead.

3. The turbine driven auxiliary feedwater pump electronic governor controls were relocated.

4.

Additional repairs were made to the unit I condenser steam dump header.

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1 Outage Maintenance Summary Continued to inspect pipe-hangers on safety related ststems inside and outside' containment in 'accordance with a conformation of action letter from NRC and IE bulletin 79-14. ~

Installed a. hydrogen igniter system in the unit I containment.

Began _ the new installation and relocation of sprinkler heads for the fire protection system in the auxiliary and control buildings.

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