ST-HL-AE-3296, Monthly Operating Repts for Oct 1989 for South Texas Units 1 & 2

Monthly Operating Repts for Oct 1989 for South Texas Units 1 & 2

ML19332C470
Person / Time
Site:	South Texas
Issue date:	10/31/1989
From:	Kent A, Mcburnett M HOUSTON LIGHTING & POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ST-HL-AE-3296, NUDOCS 8911280168
Download: ML19332C470 (14)

Text

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, The Light 1

P.0, Box 1700 Houston. Thas 77001 (713) 228 9211 E caton Lighting & Power ___._.

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November 15, 1989 ST-HL-AE 3296 File No.: G02 10CFR50.71

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U. S. Nuclear Regulatory Commission Attention:

Document Control Desk

- Washington, DC--

20555 South-Texas Project Electric Generating Station Units 1 6 2 Docket Nos. STN 50 498'& 50-499 Month 1v Ooerr. ting Reports for October. 1989 Pursuant to 10CFR50.71(a) and South Texas Project Electric Generating Station (STPEGS) Technical Specification 6.9.1.5, attached are the Monthly i

Operating Reports.for October, 1989.

If yoti should have any questions on this matter, please contact -

Mr. C. A. Ayala at (512) 972-8628.

nett Manager Support Licensing i

i MAM/BEM/n1 Attachments:

.1)

STPEGS Unit 1 Monthly Operating Report - October, 1989 2)

STPEGS Unit 2 Monthly Operating Report - October, 1989

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l 091'1280168 891031 p).]

DR ADOCK 0500 93 A1/023.NL5 A Subsidiary of Houston Industries incorporated

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.1 ST-HL-AE 3296 Houston Lighting & Power Company File No.: CO2 m'"

' South Texas Project Electric Generating Station Page 2 cc:

r Regional Administrator Region IV Rufus S. Scott Nuclear Regulatory Commission Associate General Counsel y

611'Ryan Plaza Drive, Suite 1000 Houston Lighting & Power Company Arlington, TX 76011 P. O. Box 1700 llouston, TX 77001

- George Dick, Project Manager -

' U.S. Nuclear Regulatory Commission INPO Washington, DC 20555 Records Center 1100 circle 75 Parkway J. I. Tapia.

Atlanta, GA 30339-3064

- Senior Resident Inspector c/o U. S. Nuclear Regulatory Dr. Joseph M. Hendrie Commission 50 Be11 port Lane P. 0.' Box 910 Be11 port, NY 11713 Bay City, TX-77414 D. K. Lacker J. R. Newman, Esquire Bureau of Radiation Control Newman & Holtzinger, P.C.

Texas Departmen* of Ilealth 1615 L Street, N.W.-

1100 West 49th Street Washington, DC 20036 Austin, TX 78704 R. L. Rango/R P. Verret Central Power & Light Company P. 0.' Box 2121 Corpus Christi, TX 78403 J.LC. Lanier Director of Cenerations City of-Austin Electric Utility 721 Barton Springs Road Austin,1DC 78704

- R. J. Costello/M. T. Hardt City.Public Service Board P. O. Box 1771 L

San' Antonio, TX 78296 1'

Revised 11/15/89 i

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7 SOUTH TEXAS PROJECT p

ELECTRIC GENERATING STATION UNIT 1 i

MONTHLY OPERATING REPORT OCTOBER 1989 HOUSTON-LIGHTING AND POWER CO.

NRC DOCKET NO. 50-498 e

LICENSE NO.'NPF-76 j

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Reviewed r:

General Supervisor Date

// I!N Reviewed By:'P$fi[ Engineering anager

'Date Approve'd By:

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Plant'fianager

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.ST KLAE 7[ N Monthiv Sa=<rv.

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STPEGS Unit' l was returned to service following refueling on 10/19/89 at.

'1106. ' The unit remained derated until 10/29/89 for reactor performance testing and low pressure turbine stationary blade stress monitoring.

On 10/30/89 the unit' was derated to ~95% reactor power to allow maintenance.

on a feedwater pump.

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u4 ATTACHMENT I

. ST.HL AE. 3 2 Y OPERATINC DATA REPORT

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DOCKET NO.

50 498 UNIT 1 DATE Epv. 6. 1989-COMPLETED BY 'A.P.

Rent TELEPHONE 512/972-7786 OPERATING STATUS

'1.

REPORTING PERIOD: 10/01-10/31 GROSS HOURS IN REPORTING PERIOD:

745

2.

CURRENTLY AUTiiORIZED POWER LEVEL (MWt):

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 CUMULATIVE l

S.

NUMBER OF HOURS REACTOR WAS CRITICAL.....

407.1 4501.3 6998.2 6.

REACTOR RESERVE SHUTDOWN HOURS...........

0 0

0

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HOURS GENERATOR ON LINE..................

311.4 4332.9 6738.9_

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UNIT RESERVE SHUTDOWN HOURS..............

0 0

0 l'

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GROSS THERMAL ENERGY GENERATED-(MWt)..... 783890 15374296

'24188817 4

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GROSS ELECTRICAL ENERGY GENERATED (MWH)., 252630 5216370 8208600 11.~

NET ELECTRICAL ENERGY GENERATED (MWH).... 219398 4890335 7681827 12.

REACTOR SERVICE FACTOR...................

54.6%

61.7%

67.3%

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REACTOR AVAILABILITY FACTOR..............

54.6%

61.7%

67.3%

14.

UNIT SERVICC FACT 0R.....................

41.8%

59.4%

64.8%

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UNIT AVAILABILITY FACTOR...........

41.8%

59.4%

64.8%

16.

UNIT CAPACITY FACTOR (Using MDC).........

23.6%

53.6%

59.1%

17.

UNIT CAPACITY FACTOR (Using Design MWe)..

23.6%

53.6%

59.1%

18.

UNIT FORCED OUTAGE RATE..

0%

4.9%

7.3%

19.

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

Scheduled 55 day refueling outage to begin April 7, 1990.

20.

IF SHUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP:

N/A

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- ATTACHMENT I ST-HL AE 11.1/

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AVERAGE DAILY UNIT POWER LEVEL

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5 DOCKET NO, 50-498 UNIT 1 DATE Nov. 6. 1989

- 3 COMPLETED BY A.P. Kent-

-TELEPHONE ' 512/972-7786

.c ;ITH _ OCTOEER r

i DAY

" AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe Net)

(MWe Net) 1 0

17 0

2 0

18 2

3 0

19 14 l

'4 0

20 190 l:

5 0

21

' 245-6.

0 22 367 7

0 23 492 l

L 8

0 24 754

~9~

0 25 916 10.

0 26 942 l

11 0

27 974 1

' 12 '

0 28 1118 1

~13 0

29 1222 14; O

30 1219 15 0

31 1201 16 0

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3.

.... 3 IN-

UNIT SHUTDOWNSTAND POWER REDUCTIONS' A~

Y DOCKET NO.

50-498 UNIT 1 DATE' Nov. 6.'1989 COMPLETED.BYiA.P! Kent TELEPHONE 512/972-7786

. REPORT MONTH OCTOBER 1

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No.

Date Type Duration Reason Method of Licensee System Component "Cause & Corrective Action to (Hours)

Shutting' Event Code Code Prevent Recurrence Down Raport #

Reactor 89-10 890805 S

410.2 C

4 N/A' N/A

.N/A Manual shutdown for refueling and scheduled maintenance.

89-11 891018 S

10.7

.B 1

N/A TA ~

.TRB Manual turbine trip due-to indications of water intrusion.

It was determined that'the cause was faulty instrumentation and no intrusion occurred. (Reactor Critical)'

89-12 891018 S

12.7 B

9 N/A TA TRB Turbine Overspeed Test. (Reactor Critical) 1 1

2 S

F: Forced Reason:

Method:

IEEE 805-1983 IEEE 803A-1983 S: Scheduled A-Equipment Failure-(Explain) 1-Manual B-Maintenance or Test 2-Manual' Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction

'4-Cont. of Existing E-Operator Training 6. License Exam

-Outage'

._ ATTACHMENT \\

F-Administrative 5-Reduction G-Operational Error (Explain)'

9-Other.

. ST.HL-AE-72 9 4 -

H-Other (Explain)-

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ATTACHMENT /

l ST-HL AE. 72 9/ '

PORVs and Safety Valves Si ry:

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NO PORVs or-, Safety Valves were challenged during this. reporting period.-

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ATTACHMENT 2.-

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. ST.HL-hE 311' PAGE I OF (

L SOUTH TEXAS PROJECT t_ '

ELECTRIC GENERATING STATION UNIT 2 MONTHLY OPERATING REPORT OCTOBER 1989 HOUSTON LIGHTING AND POWER CO, NRC DOCKET NO. 50-499 LICENSE NO. NPF-80 Reviewed B Md b General Supervisor Datu

' Reviewed By:

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Pl[rfdEngineering(tanager

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Appr'oved By:

11 D h\\85 Plant Manager-T bale #

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ATTACHMENT 2.,

Monthly Su===ry

. ST-HL AE J 2. W PAGE 1 OF (

STPECS Unit 2 began the reporting period at 100% reactor power.

Reactor power was reduced to ~58% on 10/05/89 due to indications of high winding temperatures on_Open Loop Auxiliary Cooling Water pump motors. The unit returned to full power at 0140 on 10/06/89.

On 10/13/89 at 1745 a reactor / turbine trip occurred from a high neutron flux negative rate detection on two of four power range neutron monitoring channels.

The unit went back on line at 0115 on 10/16/89.-

4 t-A Notice of Unusual Event (NOUE) was declared on 10/18/89 at 1208 when a-Feedwater Isolation Valve's Nitrogen pressure was below its technical specifi-cation value. - The NOUE was terminated at 1211 on 10/18/89 when Nitrogen pressure was restored to the' valve.

.The unit concluded the report period at 100% reactor power.

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m L '~ ATTACHMENT 2 ~~ ST HL AE J11( ,? OPERATING DATA REPORT PAGE 3 OF ( - j. DOCKET No. 50-499 UNIT 2 DATE Nov. 3. 1989 COMPLETED BY A.P. Kent 4 TELEPHONE 512/972-7786 OPERATING-STATUS 1. REPORTING PERIOD: 10/01-10/31 GROSS HOURS IN REPORTING PERIOD: 745 2. CURRENTLY AUTHORIZED POWER LEVEL (MWt): 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 CUMULATIVE-5. NUMBER OF HOURS REACTOR WAS CRITICAL..... 695.2 2900.8 2900.8 6. REACTOR RESERVE SHUTDOWN HOURS........... 0 0 0 7.. HOURS GENERATOR ON LINE.................. 689.5 2771.7 2771.7 8. _ UNIT R.' SERVE SHUTDOWN HOURS...-............ 0 0 0 9. CROSS THERMAL ENERGY CENERATED (MWt).... 2579773 9258454 9258454

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CROSS ELECTRICAL ENERGY GENERATED (MWH).. 873300 3124030 3124030 11. NET ELECTRICAL ENERGY GENERATED (MWH).... 832187 2946843 2946843 12. REACTOR SERVICE FACTOR................... 93.3% 89.5% 89 5% 13. _ REACTOR AVAILABILITY FACTOR.............. 93.3% 89.5% 89.5% 14. UNIT SERVICE FACT 0R...................... 92.6% 85.5% 85.5% 15. UNIT AVAILABILITY FACTOR............... 92.6% 85.5% 85.5% 16. -UNIT CAPACITY FACTOR (Using MDC)......... 89 3% 72.7% 72.7%- 17. UNIT CAPACITY FACTOR (Using Design MWe).. 89.3% 72621 72.7% 18. UNIT FORCED OUTAGE RATE,................. 7.4% 13.0% 13.0% ,19. SHUTDOWNS SCHEDULED OVER NEX16 MONTHS (TYPE, DATE, AND DURATION OF EACH): Scheduled 44 day outage to begin November 4, 1989 for Bottom Mounted Instrumentation Inspection and Turbine Inspections. 20. IF SHUT DOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A

7a y ,. y ATTACHMENT 1 c HA Tg OF ( AVERAGE DAILY UNIT POWER' LEVEL f DOCKET NO. -50'499 ~ UNIT '2 DATE Eov.-3. 1989 COMPLETED BY A.P. Kent TELEPHONE 512/972 7786 MONTH October 1 3 -DAY-AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)- (MWe Net) ^ ' 1-1108 17 1233 2 1237 .18 1240 -l 3 1194 -19 '1239 4 1238 20 1216 5 -. 1112 21 1243 6-1239 22 1242-7- 1242 23 1243 8 124." 24 1244 9 1247 25 1235 i 10' '1247 26-1247 ' 11' 1238 27 1246 12 1232 28 1245 3 1 13~ 901-29 1243 14 0 30 1244 i l l l ' 15 0 31 1242 16- ~S58 m..&

UNIT SHIT 1 DOWNS AND POWER REDUCTIONS ~ c DOCKET NO. 50-499 UNIT '2' DATE Nov. 3. 1989-COMPLETED BY A.P. Kent . TELEPHONE 512/972-7786 REPORT MONTH OCTOBER 1 No. Date Type Duretion Reason Method of Licensee System Comporent Cause 6 Corrective Action to (Hcurs) Shutting Event Code Code-Prevent Recurrence Down Report # Reactor 89-09 891005 F 0.0 A 5-N/A KV FLT Reactor power was reduced to ~58% due to indications of high winding temperatures on Open Loop Auxiliary Cooling Water Pump Motors. After the air filters on the motors were cleaned reactor power was increased. 89-10 891013 F 55.5 A 3 2-89-026 JC IB Reactor / Turbine trip occurred frt,m a high neutron flux negative rate detection on two of four power range neutron moni-toring channels. The exact cause of the detected negative rate could not be deter-mined, but has been attributed to a Control Rod dropping due to an intermit-tent high resistance connection in its stationary gripper circuit diode. The faulty diode was replaced. The root cause of the event is under investigation. 1F: Forced Reason: Method: IEEE 805-1983 IEEE 803A-1983 S: Scheduled A-Equipment Failure (Explsin) ,1-Manual B-Maintenance or Test 2-Manual Scram C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Cont. of Existing E-Operator Training & License Exam Outage ~ATT/sCHMENT 1 F-Administ.rative 5-Reduction ST-HL-AE-12. # G-Operational Errot (Explain) 9-Other PAGE y ()F 6 H-Other (Explain)

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PORVs and Safety Valves Sn-ry i y .No PORVs or: Safety Valves were challenged during this reporting period. n s f h. k b m h l l l l - l l-e.. ,s i [ -}}