ST-HL-AE-3669, Monthly Operating Repts for Dec 1990 for South Texas Project Electric Generating Station Units 1 & 2

Monthly Operating Repts for Dec 1990 for South Texas Project Electric Generating Station Units 1 & 2

ML20066D362
Person / Time
Site:	South Texas
Issue date:	12/31/1990
From:	Harrison A, Kent A HOUSTON LIGHTING & POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ST-HL-AE-3669, NUDOCS 9101150005
Download: ML20066D362 (14)

Text

,. .

The Light company """"' "

llouston Lighting k Power . -

January 10, 1991 ST i!L AE 3669 File No.: 002 10CFR50,71 U. S. Nuclear Regulatory Conaiscion Attention: Document Control Desk Vashington, DC 20555 l

South Tcxas Project Electric Generating Station Units 1 & 2 Docket Nos, STN 50 498 & 50 499 l

Monthly Operatine Reoorts for December. 1990 Pursuant to 100FR50,71(a) and South Texas Project Electric Generating Station (STPEGS) Technical Specification 6,9.1.5, attached are the Monthly Operating Reports for December, 1990, If you should have any questions on this matter, please contact Mr. C. A. Ayala at (512) 972 8628,

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( A,, , llarrison Tanager, Nuclear Licensing l

! RAD /sgs Attachmen:.s : 1) STPEGS Unit 1 Monthly Operating Report December, 1990

2) STPEGS Unit 2 Monthly Operating Report - December, 1990 i

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A1/030.N16 A Subsid!ary of llouston Industries Incorpt, rated

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' ~ '9161150005 901231 h PDR ADOCK 05000498 R PDR

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h~ k. iH6uston Lighting & Power Compan - ST-HL AE-3669 South Texas Project Electric Generat ng Station No.* G02

-CCi Regional Administrator,_ Region-IV -Rufus S. Scott .

Nuclear Regulatory: Commission- Associate Ceneral Counsel--

611 Ryan Plaza Drive,-Suite 1000 _

Houston _ Lighting & Power Company  ;

--Arlington, TX 76011- P. O. Box.61867  !

Houston,_IX 77208 George _ Dick,: Project Manager

( U.S.LNuclear Regulatory Commission: INPO

-Washington,'DC 20555 Records Center

__ _ _ . _ 1100 Circle 75 Parkway

' J . ; I . _ Tapia . Atlanta, CA 30339 3064

! Senior Resident Inspector c/o' U. S. Nuclear: Regulatory Dr. Joseph M. Hendrie Commission 50 Be11 port Lane

P. 0.-Box:910 _ .

Bally,et,10( 11713 Bay City,_TX; 77414 D, K. Lacker J. R.- Newman,. Esquire . Bureau of-Radiation Control Newman 6.Holtzinger,-P.C. Texas Department of Health

1615;L Street,11.W. 1100 West 49th Street Washir,gton, DC .20036. Austin, TX- 78756-3189 R.-P. Verret/D. E. Ward Central Power & Light Company P. 0.LBox 21211 Corpus Christi,'TX-- 78403

J.-C.:Lanier/M.--B. Lee City of _ Austin Electric _ Utility Department P.0.-Box 1088- ,

i Aus tin,' . TX l 78767. s R. J;- Costello/M. T'. Hardt

< City Public: Service Board P. 0.LBox 1771=

_ San _ Antonio,;TX 78296 Revised 10/08/90 4

L4/NRC/

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ATTACHMENT I SToHL AE %k9

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l SOUTil TEXAS PROJECT ELECTRIC CENERATING STATION UNIT 1 MONTilLY OPERATING REPOR1 DECEMBER 1990 ,

1100STON LICllTING AND POWER CO.

NRC DOCKET NO, 50-498 LICENSE NO, NPF-76

_ Reviewed  : .

t - M -9 i Supervisor Date Re By: / ' 4' ' N Plant'EngtTter(ngynnger Date Approved By: d u; If 4!9l Plant Manz er Date

ATTACHMENT I ST HL.AE %9 PAGE 1 0F- (a Monthiv Summary STPEGS Unit I remained shutdown following a unit trip on 11/24/90 due to an actuation of the generator ground fault protection rtlay.

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. J ATTACHMENT I L . .

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PAGE 0F L OPERATING DATA REPORT DOCKET NO. 50 498 UNIT 1 DATE Jan. 4. 1991 COMPLETED BY A.P. Kent TELEPil0NE 512/972-7786 OPERATING STATUS

1. REPORTING PERIOD: 12/01-12/31 GROSS Il0URS IN REPORTING PERIOD: 744

2. CURRENTLY AUTil0RIZED POWER LEVEL (MWt): ).B.Q.Q MAX, DEPEND. CAPACITY (MWe Net): 1250.6 DESIGN ELECTRICAL RATING (MWe Net): 1250.6

3. POWER LEVEL TO WilICH RESTRICTED (IP ANY)(MWe-Net): None

4. REASONS FOR RESTRICTION (IF ANY): N/A TilIS MONTH YR TO DATE CUMULATIVE

' 5, NUMBER OF 110URS REACTOR WAS CRITICAL, . . . . 0 5533.7 . 13781.1

6. REACTOR RESERVE SIIUTDOWN ll0URS . . . . . . . . . , , 0 0 0

7. Il0URS G ENERATOR ON LINE , . . . . . . . . . . . . . . . . . 0 5202.3 13141.1

8. UNIT RES ET.VE StiUTDOWN 110URS . . . . . . . . . . . . . . 0 0 0

9. GROSS TilERMAL ENERGY CENERATED (MWt)..... 0 18999716 47678208

10. GROSS ELECTRICAL ENERGY CENERATED (MWil) . . 0 6366900 16097490 11, NET ELECTRICAL ENERGY GENERATED (MWH) . . . . 17721 5999814 15124483 12, REACTOR S ERVICE FACTOR . . . . . . . . . . . . . . . . .. 0.0% 63.2% 66.8%

13. REACTOR AVAILABILITY FACTOR.............. 0.0% 63.2% 66.8%

14. UNIT S ERVIC E FACTOR , . . . . . . . . . . . . . . . . . . . . . 0.0% 59.4% 63.7%

15, UNIT AVAILABILITY FACTOR................. 0.0% 59.4% 63.7%

16. UNIT CAPACITY FACTOR (Using MDC)........, 1.9% 54.8% 58.7%

17. UNIT CAPACITY FACTOR (Using Design MWe)., -1.9% 54.8% 58.7%

18. UNIT FORCED OUTACE RATE................. 100.0% 23.8% 15.5%

19, SHUTDOWNS SCllEDULED OVER NEXT 6 MONTHS (TYPE, DATE, AND DURATION OF EACil):

Scheduled 68 day refueling outage to begin January 15, 1991,

20. IF SHUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: 03/24/91

ATTACHMENT i ST HL AE %M PAGE Y OF 6 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50 498 UNIT 1 DATE Jan. 4. 1991 COMPLETED BY A.P. Kent TELEPHONE 512/972-776.5 MONTH DECEMBER Y

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe Net) (MWe Net) 1 0 17 0 2 0 18 0 3 0 19 0 4 0 20 0 5 0 21 0 6 0 22 0 7 0 23 0 8 0 24 0 9 0 25 0 10 0 26 0 11 0 27 0 12 0 28 0 13 0 29 0 14 0 30 0 15 0 31 0 16 0

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-UNIT.SHUTDOUNS AND POWER REDUCTIONS; -

DOCKrT NO. 50-498 - -

UNIT:'1- .

DATEJan. 4. 1991; COMPLETED BY A'.P. Kent

~ TELEPHONE ' 512/972-7786 REPORT MONTH DECEMBER 1 2 3 4 5 No. Date. Type Duration Reason Method'of Licensee System Component Cause & CorrectiveL Action t6 i (Hours) Shutting ~ Event- Code . Code ' Prevent.Recurrencej Down. Report #

Reactor 90-16 901124 :F: 744.0 A 4 1-90-025 TJ CCL The unit tripped'due:to an actuation"of~

the generator ground fault' protection' - -

relay. Internal inspection of'the.' genera- -

tor revealed damage to'the end turn of..

stator coil #20. A significant amount of.

header box anterial was missing, presum-ably vaporized by an. electrical:are from. g the failed stator coil end turn to' the -

cooling water manifold. Excessive end :

turn assembly vibration is suspected as-the root cause, however additional-testing and inspections are necessary before the-cause of the failure can be conclusively,-

determined. The generator rotor will be'

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removed and full inspection and repairs' will be performed concurrent with the refueling outage.

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F: Forced Reason: Method: IEEE 805-1983 IEEE 803A-1983- Sig S: Scheduled A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test '2-Manual Scram .mgQ-C-Refueling D-Regulatory-Restriction 3-Automatic Scram 4-Cont. of Existing

%Q e --8 E-Operator Training & License-Exam- Outage < gn $- .

F-Administrative S-Reduction ]~

C-Operational Error (Explain) 9-Other .hO L

. H-Other-(Explain) 9 hI'

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. .' ATTACHMENT L ST HL A PAGEu__0F E %LG9 PORVs and Safety Valves Summary There were no PORV or Safety _ Valves challenged during the reporting period.

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'. . ATTACHMIST 2 ST HL AE 3 M PAGE _.L OF ._6 SOUTil TEXAS PROJECT 1

ELECTRIC CENERATING STATION f i

UNIT 2 l HONTitLY OPERATING REPORT DECEMBER 1990 ilCUSTON LICilTING AND POWER CO.

NRC DOCKET NO. 50-499 LICENSE NO, NPF-80

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Reviewed Supervisor Date Revic < -- ' ' E ' #/

Plarft Eng neering Manager Date Approved By: ._lf t)(#

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PlantMana);er \ Date l

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Al fMCHiviENT 2 ST HL AE & % 9 PAGE 2 0F (0 -

Monthiv Summary

'Following a refueling outage,_STPEGS Unit 2 was returned to service for normal operation on 12/11/90 at 0949. The unit operated for the remainder of the reporting period with no unit shutdowns or significant power reductions.

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ATTACHMENT .2-ST HL AE 1049 PAGE S OF 6 OPERATING DATA REPORT DOCKET NO. 50 499 UNIT 2 DATE Jan. 3. 1991 COMPLETED BY A.P. Kent TELEPHONE 512/972-7786 OPERATING STATUS

1. REPORTING PERIOD: 12/01 12/31 GROSS 110URS IN REPORTING PERIOD: 744

2. CURRENTLY AUT110RIZED POWER LEVEL (MWt): 3800 MAX. DEPEND CAPACITY (MWe-Net): 1250.6 DESIGN ELECTRICAL RATING (MWe-Net): 1250.6 I

3. POWER LEVEL TO WilICil RESTRICTED (IF ANY)(MWe Net): None 4 REASONS FOR RESTRICTION (IF ANY): N/A TilIS MONTil YR TO DATE CUMULATIVE 1

5, NUMBER OF 110URS REACTOR WAS CRITICAL. , , , , 607.0 6004.4 8981.3

6. REACTOR RESERVE SHUTDOWN llOURS........... 0 0 0 l

7. Il0URS G EN ERATOR ON LI N E . . . . . . . . . . . . . . . . . . 508.9 5499.0 8345.6

8. UNIT RES ERVE SilUTDOWN 110URS . . . . . . . . . . . . . . 0 0 0 )

9. CROSS TilERMAL ENERGY GENERATED (MWt) . . . .1608911 20182891 24705268

10. ' GROSS ELECTRICAL ENERGY GENERATED (MWil) . . 534740 6809440 10022470

11. NET ELECTRICAL ENERGY GENERATED (MVil) . . . . 497468 6427594 9446768

12. REACTOR SERVICE FACTOR.................., 81.6% 68.5% 66.7%

13. REACTOR AVAILABILITY FACTOR. . . . . . . . . . . . . , 81.6% 68.5% 66.7%

l 14. UNIT SERVICE FACT 0R...................... 68.4% 62.8% 62.06

15. UNIT AVAILABILITY FACTOR................. 68.4% 62.8% 62.0%

16. UNIT CAPACITY FACTOR (Using MDC),........ 53.5% 58.7% 56.1%

17. UNIT CAPACITY FACTOR (Using Design MWe)., 53.5% 58.7% 56.1%

18. UNIT FORCED OUTAGE RATE...... .........., 0.0% 21.01 21.0%

L 19. SHUTDOWNS SCilEDULED OVER NEXT 6 MONTilS (TYPE, DATE, AND DURATION OF EACll):

l N/A

20. IF SilUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A

.1 ATTACHMENT d ST HL AE 3049 PAGE A __0F- 6 i AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-499 UNIT 2 DATE Jan. 3. 1991 COMPLETED BY A.P. Kent TELEPHONE 512/972-7786 MONTH DECEMBER DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (KWe Net) (HWe-Net) 1 0 17 943 2 0. 18 1126 3 0 19 1224 4 0 20 1233 5 0 21 1244 6 0 22 1245 7 0 23 1240 8 0 24 1241 9 0 25 1248 10 -0 26 1251 11 130 27 1248 l

12 252 28 1256 13 297 29 1251 14 499 30 1250 1

15 824 31 1247 16 910 l

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' UNIT SHUTDOWNS AND EPOWER REDtiCTIONS -

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DOCKET NO. 50-499 .

UNIT 22' '

'DATE ~'Jan. 3. 1991'-

COMPLETED BYA.P. Kent TELEPHONE 512/972-7786

' REPORT MONTH ' DECEMBER'

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, No. Date Type Duration Reason Method'of Licensee System- Component Cause 6 Corrective Action to .

.(Hours) Shutting Event Code. Code Prevent Recurrence Down Report #

Reactor 90-13 900929 S 233,9' C 4'- N/A N/A N/A. Refueling .and scheduled maintenance" j outage.

90-14 901211 S 1.2 :B- 9. -N/A N/A N/A Turbine overspeed trip test.

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1 '2 3 4 5 m F: Forced Reason: Method: IEEE 805-1983 IEEE 803A-1983 rny S: Scheduled A-Equipment Failure (Explain) 1-Manual i iz, l

B-Maintenance or Test C-Re fueling- .

2-Manual Scram 3-Automatic > Scram. 1 M[ WZ C

D-Regulatory Restriction 4-Cont. of- Existing o I E-Operator Training & License Exam Outage Y '

F-Administrative '

G-Operational Error.(Explain) 5-Reduction 9-Other f -

'H-Other (Explain) l

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ATf/4 HMENT s. - - -I ST hlAE Sou PAGE 3 0F L 0 -

J PORVs and Safety Valves SummaII There were no PORV or Safety Valves challenged during the reporting period.

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