ML20101T686

Monthly Operating Repts for June 1992 for Sequoyah Nuclear Plant,Units 1 & 2

ML20101T686
Person / Time
Site:	Sequoyah
Issue date:	06/30/1992
From:	Hollomon T, Joshua Wilson TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9207210328
Download: ML20101T686 (10)

Text

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- J L W han vwwa.:nt Sarnen twmx na n July 15, 1992 U.S. Nuclear Regulatory Commission AT'IN Document Control Desk Washington, D.C. 20555 Gentlemen:

L- In-the Matter cf ) Docket Ncn. 50-327 Tennessee Valley Authority ) 50-328

- SEQUOYAll NUCLEAR PIANT (SQN) - JUNE 1992 MONTilLY OPERATING REPORT Enclosed is the June 1992 Monthly Operating Report as required by SQtt Technical Epecification 6.9.1.10.

If you have any questions cencerning this matter, please call M. A.' Uooper at (615) 843-8924 Sincerely.

s l WLOJsn L. Wilson Enclosure

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? Y G n .t n 9207210328'920630' f '

PER ADDCK'05000327

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e U.S. Nuclear Regulatory Commissions ,

Pago 2 July 15, 1992 cc (Enclosure):

'INPO Records Center Institute of Nuclear Power Operations i 1100 circle 75 Parkway Suite 1500 Atlanta, Georgia 30339 Mr. D. E.14 Barge, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. Ted Marston, Director Electric Power Research Institute P.O. Box 10412 Palo Alto, California 94304 NRC Resident Inspector Sequoyah Nuclear Plant- r

-2600 Igou Ferry Road-

-Soddy-Daisy Tennessee 37379 Regional-Administration U.S. Nuclear Regulatory Commission Office of Ineraction.and Enforcement Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia. 30323

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M b. A.-Wilson, Project Chief ,

U.S. Nuclear Regulatory Commission Pegion.II 101-Marietta. Street,-NW, Suite 2900 Atlanta, Georgia 30323 -

Mr. F. Yoat, Director Research Services

-Utility Data Institute

'1700 K Street, NW, Suite 400

-Washington, D.C. 20006 L

TFRNRSSEE VAIJ.EY AUTil0RITY NUCl#At POWER GROUP SEQUOYAll NUClfAR FIANT MONTill.Y O/ERATING REPORT TO Tile NUC1 EAR REGUIAftlRY C0fMISS10N JUNE.1992 UNIT 1 DOCKET NIMBER 50-327 LICENSE NUMBER DPR-77 UNIT 2 IX)CKMT NIMBFJ 50-328 LICENSE NIMBlut DPR-79

, OPERATIOdAL StM1ARY JUNE 1992 UNIT 1 L Unit 1 generated 837,380 megawatthours (tNh) (gross) electrical power during June, with a capacity tactor of 99.95 percent. Unit i operated at near 100 percent reactor power throughout the month of June.

UMll_2 Unit 2 generated 785,324 megawatthours (tNh) (gross) electrical power during June, with a capacity factor of 93.74 percent.

On June 27 at 0953 central daylight- time (CDT), a Unit 2 reactor trip occurred from en over temperature (OT) delta T reactor trip circuit. The Loop 1 i

reactor coolant system delta T channel was out of service for maintenance activities. The Loop-3 cold-leg resistance temperature detector failed low,  ;

resulting in Loop 3 OT delta T bistables actuations therefore, comple'ing the

, reactor protection system two-out-of-four logic to initiate a reactor trip.

l Unit 2 tied online again on June 28 at 1241 CDT, and reached 100 percent ,

l reactor power on June 29 at 1800 CDT. Unit 2 continued to operate at l-

~100 percent reactor power through the end of June.

F.0WER-DIEPAIED_.RELIEE_VALVIL.(f.0RValELSAEEILVALVES SVt21ARY There were no challenges to PORVs or safety valv.ts in June. '

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AVEAACE DAILY UNIT POWER LEVEL  !

l DOCKET NO. ._1Q-327- UNIT No. One DATE: 02-fS _92 COMPLETED BY T J J 011cman TELEP110NE: Ihh]_B!t3._2328 MONTil JWiE .1992_

AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL DAY (tMe-Nel). DAY (MWe-Neit 1 -lus . _ _ _ 17 1124 4 2 1135 18 1126 3 1 13S _ 19 lill._t 4 .113/L. _, - 20 _. _1124._

5 _lllk __ 21 __ [125 _

6 1131 22 _112It 7 __1131 ..

23 __ 112.6 8 113.Q. 24 1123 9 1129 . 25 _ 112.2 10 1128 26 _ 1119 11 ll25 27 1118 12 ,_1125. _ 28 1116 13 __ ll22 29 1118.

14 _ _ 1122_ 30 111.8

1. 15 .112/ 31  ![/A .

16 _1127 l

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AVERACE inAILY UNIT PINER LEVEL DOCKET NO. .JQ_328 LHIT No. __Tw.o__ DATE: _01 .EE- J2 CT!PLETED BY: T A llo11omon TELEP110NE {611)_.Bh3-1528 i i

MONTH: JUNL.1292_. j I AVERAGE DAILY POWER LEVEL AVERAGE DAILY POWER LEVEL UAY ItIWerNcLL DAY DNe-find ._

1- __ ' 1131

_ 17 112L 4 2 .__. 1131 . 18 1113 _

3 -

1130 19 1122 _ .-.

4 1133__ 20 __ 1121 5 _.1126_ 21 - _.1122 _.

6 1129 _ _ . _ _ _ 22 ._

ll21.

7- 1129 23 1123 8 __ _1129- 24 .1124 _ _ _ . _ .

9 _ 1127 25 ._, 1120 10' 112L 26 1119 11 _

_ 1116 27 ._ skL_

12 112E 28 _ _ . _ 93 13 .1125.__ 29 -

6. 91_._ ._. .

14 __ . _1125 30 ,_ _ 111 1 15 _ . _ - - L126 31 Ji/ L ,_

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OPERATING DATA REP 0kT DOCKET No. _10:32L___

DATE h ly_S 1932__

COMPLETED DY 11_L_tiglMog,,

TELEPHONE {$_11L.DA3:1$ZQ .

l Of1RA11t!G 11A1U3 l Notes l ,

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- 1. Un(t Name: _ itgugnh,.UnlLQat. . . l l

2. Reporting Period: hat 1992 l l

3. Licensed .Therinal Power (HWt): _3411.0 l l

4. Nameplate hting (Gross HWe): _lZZQ16 l l S. Design Electrical Rating (Het HWe): 114fl.0 l l

, _6. Maximum Depandable Capact ty (Gross ifde): 11f2 d _ _ . l l ,

E 7. _ W.ximum Dependable Capacity -(Het HWe): 112LQ l_ .-- -- 1 Bi If Changes Occur in Capa:lty Ratings (Item Nue. vers 3 Through 7) Since Last Report, Give Reasons:

9. -' Power level To Volch Restricted, If Any (Net IMe): N/A

10. Reasons Fer Restrictions, if Any: N/A _

This Month Yr to-Date Cumulative I'

11., Hours in Reporting Perioda 721 _ 4 . 3 6.B__ 95,433 ,_._

.12. Number of Hours Reactor Was Critical- 72L_Q 1$3.Q.d 5L464

13. Reactor. Reserve $hutdown 16urs g o. 0_

14. Hours Generator On-Line ._12L O 3.436 ft. 49.351.d

15. - Unit Reserve Shutdown Hours - .__ 020 .. .__.Q_ _ Q_

.16. Gross Theimal Energ) Generated (!!WH) 2.455 321,2 11.d20.,495.1.. 16LQQLQ28

17. Gross Electrical Energy Generated I,HWH) 837 380 .. 3 83a.558 _ ,_54J00 054 _

.18." flet Electrical ?.nergy Generated (HWH) . 60?d99 _L6BS . 643 . . . . . 52. 253 . 37L._._

19. Unit Service Factor .1Qho 'lho._ .51.2

20. Unit' Availability factor 100.0 _ _ 79 6 51.2- -r

-21.= Unit' Capacity raetor (Using HDC Net) = 1%#._ 13_. .48 J._,

22.-UnlU Capacity factor (Using DER Net)-

97.8 72d 4L1_.

23. Unit f orced Ostage Rate; 0,.0 20,L 4.q. 4 4~

'24. ShJtdowns Scheduled Over Next 6 Months (Type. Dete, and Duration of Each):

25.IfShutDownItEnd_0fPeportFeriod:EstimatedDateofStartup: _

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l OPERATING DATA REPORT l l

DOCK (i NO. _$Q-32B l DA1C M y 0 J 292 .

COMPLETED BV L_1_1[Qllpan0__

TELEPHONE 16L$LBj3 ]i?L DECM11!iG 11 AIMS l Notes l

1. Unit dame: _$tavnyA!LDaiLIro_ l l l

2. Reporting Feriod! _ lune.1992 ,

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3. Licensed Thermal Power (HWt): _1411.0 .l l 4.- Nameplate Rating (Gross HWe): _1220$_ l l ,'

1. 5. Design Electrical Rating (Net HWe): _1141 0 l l

6. .Haximum Dependable Capacity (Gross HWe): 1162J.__ l l

7. Maximum Depend 4ble Capacity (Net HWe): _1127,.0 l l S. If Changes Occur in Capacity. Ratings (Item Numbers 3 Thhugh 7) Since Last Report. Give Reasons: -

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, 9. Power Level To Which Restricted, If Any (Net NWe): N/A

.. 10. Reasons For Restrictions.. *f Any tyA ____ .

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This Month Yr-to-Date Cumulative II. Hours in Reporting Period' 7?1 4.368 882 393 ,,,

1~2. Number of Hours Reactor Was Critical 701.Q._._ 2 J,23 d.. 51.3J2

13. Reactor Reserve Shutdown Hours 0 0 0

14. Hours Generator On-l.ine__ 694 2 2.744.3 iQ2281 L -

15.. Unit Reserve' Shutdowii Hosts LO 0- 0

16. Gross Thermal Energy Generated (MdH) ,_Zd11.007. 7 ,,_L3ALJABA J59aZ6L151

17. Gross Electricai Energy.enerated l (HWH) _,_11 0 324 ,_2JJ3432q_.,_ _.53JjtL611 l: -18. Net Electrical Energy Generated (HWH)- 757.195 _ 2.70Lff!L. _5.L651404 L 19. Unit Service Factor 9L3 _ __ 6LB., SIJ_

'20. Unit Availability Factor 9L3__._ 6La_ 57,d__

21. Unit' Capacity- Factor _ (Using HDr. Net)- .9L6 55.3 S L,1__

72. ' Unit Capacity Factor (Using DER Net) ,_. 91 1 Sg A $L9_ .

23.' Unit Fori.ed Ov' age Rate 3.7 _ _2d_, 3hL

24. Shutdowns Scheduled Over Newt 6 Honths (Type, Date, and Duration of Each):

l j-

- 25. 'If Shut Down At End Of Report Period. Estimated Date of.Startup:

p a wL - . .. ._ . -. -.- - -. , .. - . - _ .

DOCFET MO: cf-227

.(MIT NAPE: we -

UNIT SHUTDOWNS AhD POCR REDUCTIONS DATE: 07/0*/92___ .

CONPLETED BY:1, J. Hqligw;n REPORT MONTH: JUNE 1992 TELEPHONE:f6151 S43-75El j Pethod of Licensee Cat:se and Cerrective Shut *ing Dcwn Event ll System Cog onent Action to l Duration 2 3 5 Prewt Recurrence 8 I Reason Reactor Report No. Code Code No. Date Type (Hours) 1 No activities to report this period.

I I

I 2 Reason: 3 Method: kxhibitG-Instructions I:F Forced for Preparation of D*ta

,bEquipment Failure (D plain) 1-Msnual 5: Scheduled Entry sheets fer Eicer.see B-Maintenance or Test 2-Manual Scram 3-Automatic Scram Event Report (LER) File C-Refueling 4-Continuation of Existing Outage (NUREG-1022)

D-Regulatory Restruction E-Operator Training and License Examination 5-Reduction F-Admini strati ve 9-Cther SExhibit I-Same Source G-Operational Error (Explain)

H-Other (Explain)

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COCKET NO: 50-328 1MIT SKUtDOWNS AND POWER REEUCTIONS (HIT NAME: :Tm .-

DATE: 07/03/92 .

REPORT MONTH: Jane inC? COMPLETED BY:T. J. t*eilosen TELEPHONE:f6151 843-798-l Method of Licensee Cause and Corrective

Duration Shutting Down- Event System Component Actica to

, No .' Date IType l l(Hou-s) Reason2' Reactor3 R*pertNo.-l Code d

Code 5 P L' Recurrence ,

c 4 -920627 -F' 26.8 A- 3 328/92008- JG PEN At 0953 CDT. Unit 2 teact -

I tripped free 100 percent ,awer.

The trip was the result of a t coincident (2/4) logic betwem Ltop 1 and 3 over temperature  ;

delta T prctection. Loep 1 delta T/Tevg charnel bad been removed free service at 0236 CDT because of spurious ala*ms and indication. The protection t bistables were placed in manual trip when the loop was rmved ,

free service for maintenance i 4

activities. The second channel.

Loop 3. coinciceetly failed low.

resulting in completion of the i

i. , reactor protection system logic.  !

initiating a reactor trip. The. ,

cause of the failure appears to  ;

have occurred as a result r.,f hich I

.esistance associated with the RTD

• i penetration. The problems with the RTDs were corrected and i returned to service.

Unit 2 tied online at 1241 CDT en ,

6/28/92, and reached 100 percent l reactor pcwer at 1600 CDT on '

6/29/92. t I

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4 F: Forced Method: Exhibit C-Instructions l 5: Scheduled A-Equipment Failure (Explain) 1-Manual for Preparation of Data 1 B-Maintenance or Test 2-Manual Scram Entry sheets for. Licensee C-Refueling 3-Autematic Scram .

Event Report iLER) File ,

, .D-Regulatory Restruction 4-Centinuation of Existing Outage (NUREG.1022) [

E-Operator' Training and License Examination 5-Reduction  ;

I F-Administrative 9-Other i G-Operational Error { Explain) S

. Exhibit L-Same Source Mther (Explain) l l I l  ;

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