ST-HL-AE-3800, Monthly Operating Repts for May 1991 for South Texas Project Electric Generating Station

Monthly Operating Repts for May 1991 for South Texas Project Electric Generating Station

ML20077F478
Person / Time
Site:	South Texas
Issue date:	05/31/1991
From:	Jump W, Kent A HOUSTON LIGHTING & POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ST-HL-AE-3800, NUDOCS 9106180464
Download: ML20077F478 (14)

Text

- _ - - - - - -

s. .

The Light cIfouston o mpLighting a ny&SPower

"'I.[****

? I'!"I'!'[I"j'?*?"*'i"s Station P. a nos 283]adiyyJi,yesayyj_a}

June 13, 1991 ST-llL AE-3800 File No.: G02 10CFR50.71 U. S. Nuclear Rebulatory Conunission Attention: Document Control Desk Washington, DC 20555 South Texas Project Electric Generating Station Units 1 & 2 Docket Nos. STN 50 498 6 50 499 Monthiv Operatinr_ Reports for May. 199.1 9 Pursuant to 10CFR50.71(a) and South Texas Project Electric Generating StatitT (STPEGS) Technical Specification 6.9.1.5, attached are the Monthly Operating Reports for May, 1991.

If you should have any questions on this tnatter, please contact Mr. C. A. Ayala at (512) 972-8628.

William J . Jump Manager Nuclear Licensing MKJ/kmd Attachments: 1) STPEGS Unit 1 Monthly Operating Report - May, 1991

2) STPEGS Unit 2 Monthly Operating Report - May, 1991 see W W 9toffEWE!"4 m con avaa OaOOO m

^ 3"b*idi"'v o r 'lo"on "d"'t ries '"co'nor"'ed

/p -x7 I n PDR &

9 ST HL AE 3800 llouston Lighting & Power Company File No. : CO2 South Texas Project Electric Generating Station Page 2 cc:

Regional Administrator, Region IV Rufus S. Scott Nuclear Regulatory Commission Associate General Counsel 611 Ryan Plaza Drive, Suito 1000 Houston Lighting & Power Company Arlington, TX 76011 P. O. Lox 61867 Houston, TX 77208 George Dick, Project Manager U.S. Nuclear Regulatory Commission INFO Washington, DC 20555 Records Center 1100 Circle 75 Parkway J. 1. Tapia Atlanta, CA 30339-3064 Senior Resident Inspector c/o U. S. Nuclear Regulatory Dr. Joseph M. Hendric Commission 50 Be11 port Lane P. O. Box 910 Be11 port, NY 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, N.W. 1100 West 49th Street Washington, DC 20036 Austin, TX 78756-3189 D. E. Ward /T. M. Puckett Central Power and Light Company P. O. Box 2121 Corpus Christi, TX 78403 J. C. Lanier/M. B. Lee City of Austin Electric Utility Department P.O. Box 1088 Austin, TX 78767 R. J. Costello/M. T. Hardt City Public Service Board P. O. Box 1771 San Antonio, TX 78296 Revised 01/29/91 L4/NRC/

/,nl6hMElif I ST-HL-AE-39 OB PAGE_J OF 4 -

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION UNIT 1 MONTHLY OPERATING REPORT MAY 1991 HOUSTON LICHTING AND POWER CO.

NRC DOCKET NO. 50-498 LICENSE NO. NPF-76 Reviewed . s. .

6 bi Supervisor Date Reviewed By: -M-) M- 6[/ t VI PlanVE gi ering Mana er 'Dat'e Approved By: A Dy hktoktti Plan't Manag r \ Date

. . . . . . . - . . - - . . - . .. = .--_ .- . . . - . . - . . . - . . . - -

r. _ _-- -!

MTACHMENT I ST HL-AE-3 goo  !

PAGE_ a 0F - 6 Monthiv Summarv ,

STPEGS Unit 1 operated during the reporting period with no unit shutdowns or significant power -reductions, i

1 i

I

• ' r

.. ATI ACHMENT / ,

ST HL AE 3700 PAGE .3 0F 6 OPERATING DATA REPORT.

DOCKET NO. 50-498 . . _ _

UNIT 1 DATE Jun. 7. 1991 COMPLETED BY A.P. Kent TELEP110NE 512/972-7786 OPERATING STATUS

1. REPORTING PERIOD: 05/01-05/31 CROSS HOURS IN REPORTING PERIOD: 744

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

3. POWER LEVEL TO WHICH RESTRICTED (IF ANY)(MWe-Net): None 4 REASONS FOR RESTRICTION (IF ANY): N/A THIS MONTH YR TO DATE CUKULATIVE

5. NUMBER OF HOURS REACTOR WAS CRITICAL.. ,. 744.0 1384.5 15165.6

6. REACTOR RESERVE SHUTDOWN 110URS . . . . . . . . . . . 0 0 0

7. HOURS GENERATOR ON LINE. . . . . . . . . . . . ..... 744.0 1270.9 14412.3

8. UNIT RESERVE SHUTDOWN HOURS.. . ......... O. 0 0

9. GROSS TilERMAL ENERGY GENERATED (MWt) . . . . 2827023 4475875 52154083

10. GROSS ELECTRICAL ENERGY GENERATED (MWH) . . 965290 1510170 17607660

11. NET ELECTRICAL ENERGY GENERATED (MWH) . . 923235 1394077 16518560

12. REACTOR SERVICE FACTOR. ................ 100.0% 38 11 62.6%

13. REACTOR AVAILABILITY FACTOR. .... ..... . 100.0%- 38.2% 62.6%

14. UNIT SERVICE FACTOR. ... .. .. ....... 100.0% '35.1% 19.11

15. UN IT AVAI LAB I LI TY FACTOR . . . . . . . . . . . . . . . . . _100 , 0 g 35.11 59.5%

16. UNIT CAPACITY FACTOR (Using MDC)......... 99.2% 30.8% 54.5%

17. UNIT CAPACITY FACTOR (Using Design MWe). 99.2% 30.8% 54.5%

18. UNIT FORCED OUTAGE RATE... ........... . 0.0% 25.8% 16.6%

19. SHUTDOWNS SCHEDULED OVER 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/A

l.iiACHIAENT I ST HL-AE 3200 AVERAGE DAILY UNIT POWER LEVEL .

DOCKET NO, 50-498 UNIT 1 DATE Jun. 7. 1991 CO."PLETED BY A.P. Kent TELEPHONE 512/972-7786 MONTH HAY DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (HWe-Net) (MWe-Net) 1 1253 17 1248 2 1253 18 _

1249 3 1252 19 1251 4 1251 20 1250 5 1249 21 1749 6 1253 22 1240 7 1253 23 1243 8 1252 24 1244 9 1250 25 1742 le 1248 26 1238 11 1179 27 1235 12 1189 28 1236 13 1240 29 1239 14 1232 30 1241 15 1247 31 1217 16 1747

~

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET FO. 50-498 UNIT 1 -

DATE Jun. 7. 1991 COMPLETED BY A.P. Kent TELEPHONE 512/972-7786 l REPORT MONTH MAY l 2 3 4 5 No. Date Type Duration Reason Method of Licensee System Component Cause & Corrective Action to (Hours) Shutting Event Code Code Prevent Recurrence Down Report #

Reactor THERE WERE NO UNIT SHUTDOWNS OR SIGNIFICANT POWER REDUCTIONS DURING THIS REPORTING PERIOD 1

'l.

T "U CD ? I

$12[.

1 2 3 4 5 mI>l T ch F: Forced Reason: Method: IEEE 805-1983 IEEE 803A-1983 > 3r, ; ;

S: Scheduled A-Equipment Failure (Explain) 1-Manual llj B-Maintenance or Test 2-Manual Scram d@,

C-Refueling 3-Automatic Scram o o~

.D-Regulatory Restriction 4-Cont. of Existing O E-Operator. Training & License Exam Outage p F-Administrative' 5-Reduction G-Operational' Error (Explain) 9-Other H-Other (Explain)

r--___.

A4, , ,,au; ( l -

ST.HL.AE-3?c o L_ PAGE L 0F_ 6 PORVs and Safety Valves Summary There were no PORV or Safety Valves challenged during the reporting period.

1 1~---,-.,_ ~

l AITACHMENT 4 ST HL AE 37 oo PAGE I

_0F 6 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION UNIT 2 MONTHLY OPERATING REPORT MAY 1991 HOUSTON LIGHTING AND POWER CO.

NRC DOCKET NO. 50-499 LICENSE NO. NPF-80 Reviewed B -

C b /'t i Supervisor Date Reviewed By:

/Me - C /o[9/

PlantV i eering Ma ager Date Approved By:

b -

-- (,l10k#1i PlantManagyr \ Date i

• • --o$3.,

hT"1 ACHMEtlT 2 ST-HL-AE-37o o Monthly Summarv PAGE > 0F_ G i STPEGS Unit 2 began the month operating at 100% reactor power.

A reactor / turbine trip was initiated on 5/22/91 at 2222 when a non-licensed l- operator inadvertently actuated the local switch which opens the main generator i

output breakers.

The unit was returned to service on 5/25/91 at 1702 and concluded the reporting period at 100% reactor power. i l

l l

l i

I I

i I

(

l

ATTACHMENT ;2 ST-HL AE-370 0 PAGE 3 0F- 6 OPERATING DATA REPORT DOCKET No. 50-499 .

UNIT 2 DATE Jun. 7. 1991 COMPLETED BY A.P. Kent L TELEPHONE 512/972-7786 l

OPERATING STATUS

1. REPORTING PERIOD: 05/01-05/31 GROSS HOURS IN REPORTING PERIOD: _144_

2. CURRENTLY AUTHORIZED POWER LEVEL (MVt): 3800 MAX. DEPEND. CAPACITY (MWe-Net): 1250.6 DESIGN ELECTRICAL RATING (MWe-Net): 1250.6

3. POWER LEVEL TO WHICH RESTRICTED (IF ANY)(MWe-Net): None

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

5. NUMBER OF HOURS REACTOR WAS CRITICAL.... 686.0 3470.4 12451.8

6. REACTOR RESERVE SMUTDOWN HOURS........... 0 0 0

7. HOURS GENERATOR ON LINE,......... ... . . 677.3 3367.9 11713.6

8. UNIT RESERVE SHUTDOWN HOURS...... ....... 0 0 0

9. GROSS THERMAL ENERGY GENERATED (MWt) . . . . 2550275 12535089 42240357 l

l 10. GROSS ELECTRICAL ENERGY GENERATED (M'4H). 866060 4256840 14279310

11. NET ELECTRICAL ENERGY GENERATED (MKd) . . . 824727 4063876 13512644

12. REACTOR SERVICE FACTOR.. ... ... . ..... 92.2% 95.8% 72.9%

13. REACTOR AVAILABILITY FACTOR. . .. . ..... 92.2% 95.8% 72.9%

14. UNIT SERVICE FACTOR.. .... ... .. .. . 91.0% 93.0% 68.5%

15. UNIT AVAILABILITY FACTOR.......... .... . 91.0% 93.0% 68.5%

16. UNIT CAPACITY FACTOR (Using MDC). ... .. 88.6% 89.7% 63.2%

17. UNIT CAPACITY FACTOR (Using Design MWe).. 88.6% 89.7% 63.2% i

18. UNIT FORCED OUTAGE RATE.... .. . . .. .. 9.0% 7.0% 17.4%

19. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE AND DURATION OF EACH):

l Refueling and scheduled maintenance outage to begin September 28, 1991, l

20. IF SHUT DOWN AT END.0F REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A

__--_-________._-_-_J

ATTACHMENTJ ST-HL AE-38 o~o

! AVERAGE DAILY UNIT POWER LEVEL - __

DOCKET NO. 50-499 UNIT 2 DATE Jun. 7. 1991 COMPLETED BY 6,.P. Kent TELEPHONE 512/972-7786 MONTH MAY DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POVER LEVEL (MWe-Net) (MWe-Net) 1 1245 17 1243 2 1245 18 1241 3 1244 19 1244 4 __

1245 20 1243 5 1243 21 1242 6 1244 22 1156 7 1245 23 0 8 1244 24 0 9 1243 25 41 10 1244 26 986-11 1242 27 1233 12 1242 28 1231 13 1243 29 1232 14 1243 30 1241 15 1244 31 1240 16 1244 J

UNIT SHUTDOWNS AND POWER REDUCTIONS 50-499 DOCRET NO.

UNIT 2 DATE Jun. 7. 1991 COMPLETED BY A.P. Rent .

TELEPHONE 512/972-7786..

REPORT MONTH MAY

! 4 5 l 2 Method of 3

Licensee system Component Cause & Corrective Action to No. Date Type Duration Reason Prevent Recurrence Shutting Event Code Code (Hours)

Down Report w Reactor 2-91-007 EL HS A reactor / turbine trip was initiated 91-06 910522 F 66.7 H 3 when a non-licensed operator inadvertently actuated the local switch which trips open the main generator output breakers. The resulting transient activated the reactor trip circuitry related to reactor coolant system overtemperature protection.

Corrective actions to prevent recurrence are being established and will be discus-sed in the LER.

~o cn >

]> -a -H ,

b5 ro 4 5 3> f '

1 2 3

Method: IEEE 805-1983 IEEE 803A-1983 bi g1 E;" !

F: Forced Reason: jj EE'f A-Equipment Failure (Explain) 1-Manual ~

S: Scheduled 2-Manual Scram c3 o2" B-Maintenance or Test 90 0 C-Refueling 3-Automatic Scram 4-Cont. of Existing D-Regulatory Restriction T' E-Operator Training & License Exam Outage F-Administrative 5-Reduction G-Operational Error (Explain) 9-Other H-Other (Explain)

~ . _ - _ - - - _ _

sibCHMENTJ

, ST-HL AE-3Foo PAGE G OF 6 PORVs and Safety Valves Summary Following the reactor / turbine trip that occurred on 5/22/91, the resulting transient caused Reactor Coolant System (RCS) pressure Le increase. Pressurizer spray valve 2 RC-PCV-0655C.was in manual control and closed due to excessive

leakage and the available automatic spray valve (2-RC-PCV-0655B) was not able to reduce the pressure. Pressurizer PORVs 2-RC-PCV-0655A and 2 RC PCV-0656A j opened at approx 1"ately 2335 psig. RCS pressure reached approximately 2423 psig.

l l

I lL l

_ . _ _ _ _ _ _ _ _ __ _ - - _ _ __ _ -_______ _ - _ _ _ _ _ _ - _ _ _ _ _ _ _ - - - _ _ - _ - _ _ - _ _ _ - _