ML19332C470

Monthly Operating Repts for Oct 1989 for South Texas Units 1 & 2.W/891115 Ltr

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)

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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 DR ADOCK 0500 93 p).]

A1/023.NL5 A Subsidiary of Houston Industries incorporated

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

'" ' 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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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 i

Reviewed r: "! !39 C

General Supervisor Date

• Reviewed By: // I!N

'P$fi[ Engineering anager 'Date Approve'd By: h\h , ' h\\\\ 71 '

Plant'fianager -\ bade p

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ATTACHMENT /

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k~ .ST PAnrKLAE 1 OE 7[ N 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 _.P l [.tl. g O f.I .

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 S. NUMBER OF HOURS REACTOR WAS CRITICAL..... 407.1 4501.3 6998.2 l

0 0 0 -(

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

7. HOURS GENERATOR ON LINE.................. 311.4 4332.9 6738.9_

-8. UNIT RESERVE SHUTDOWN HOURS.............. 0 0 0 l'

9. GROSS THERMAL ENERGY GENERATED-(MWt)..... 783890 15374296 '24188817 4

10. 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% ,

l 13. REACTOR AVAILABILITY FACTOR.............. 54.6% 61.7% 67.3%

14. UNIT SERVICC FACT 0R. .................... 41.8% 59.4% 64.8%

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15. 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

3. ;. ST-HL AE 11.1/ i I 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 25 916 942 -'

10 . 0 26 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 IN-Y

UNIT SHUTDOWNSTAND POWER REDUCTIONS' A~

DOCKET NO. 50-498 '.

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

. REPORT MONTH OCTOBER 1 '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 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' F-Administrative 5-Reduction ._ ATTACHMENT \

G-Operational Error (Explain)' 9-Other. . ST.HL-AE- 72 9 4 -

H-Other (Explain)- PAGE S OF f i

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' ST-HL AE. 72 9/ '

PORVs and Safety Valves Si pggg g gp g-

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

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ATTACHMENT 2.-

T: . ST.HL-hE 311' PAGE I OF (

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. 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: // 87 l Pl[rfdEngineering(tanager 'Da'te l Appr'oved By: 11 , D h\85 Plant Manager- T bale #

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9 E. 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.

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

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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DOCKET No. 50-499 UNIT 2 DATE Nov. 3. 1989 4 COMPLETED BY A.P. Kent 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 POWER LEVEL TO WHICH RESTRICTED (IF ANY)(MWe-Net): None 3.

                .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

10. 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

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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             !

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                                          '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. 1 F: 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          ;PAGE 6 0F #          ;__

i y .No PORVs or: Safety Valves were challenged during this reporting period. n - - s f h. k b m h l 1 l l l-l l-e.. ,s i l [ }}