ML20043A117

Monthly Operating Repts for Apr 1990 for South Texas Project Electric Generating Station,Units 1 & 2.W/900510 Ltr

ML20043A117
Person / Time
Site:	South Texas
Issue date:	04/30/1990
From:	Kent A, Mcburnett M HOUSTON LIGHTING & POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
ST-HL-AE-3461, NUDOCS 9005180074
Download: ML20043A117 (15)

Text

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The Light comp anysoutuna. Project Electric moerating station P. O, ha m Wmod. Tuas 77W Houston Lighting & Power May 10, 1990 ST HL AE 3461 -

File No.: CO2 10CFR50.71' U. S; Nuclear Regulatory Commission l Attention: . Document Control Desk Washington, DC 20555 South Texas Project Electric Generating Station Units 1 & 2 Docket Nos. STN 50-498 & 50 499 i Month 1v-Operatine Reoorts for Aoril. 1990  !

i Pursuant to 10CFR50.71(a) and South Texas Project Electric Generating.

Station (STPECS) Technical Specification 6.9.1.5, attached are the Monthly Operating Reports for April, 1990.  ;

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

$ hW M.:A. McBurnett Manager, Nuclear Licensing.

BEM/n1 Attachments: 1) STPEGS Unit l' Monthly Operating Report - April, 1990

2) STPEGS Unit 2 Monthly Operating Report - April, 1990

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A1/023.NL5 A Subsidiary of Houston Industries incorporated

.1 9005180074 900430 -

PDR ADOCK 0500049G y_ .R PDC

..,,,--,,--i-ST HL- AE- 3461 Houstoa Lighting & Power Company File No. G02 South kas Project Electric Generating Station Page 2 CC:

Regional Administrator, Region IV Rufus S. Scott Nuclear Regulatory Connission Associate General Counsel 611 Ryan Plaza Drive, Suite 1000 Houston Lighting 6 Power C qany Arlington, TX 76011 P. O. Box 61867 Houston, TX 77208 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 Bellport Lane P. O. Box 910 Bellport, NY 11713 Bay City, TX 77414 D. K. Lacker J. R. Newman, Esquire Bureau of Radiation Control Newman & Holtzinger, P.C. Texas Department of Health 1615 L Street, N.W. 1100 West 49th Street Washington, DC 20036 Austin, TX 78704 D. E. Ward /R. P. Verret Central Power & Light Company P. O. Box 2121 Corpus Christi, TX 78403 J. C. Lanier Director of Generation City of Austin Electric Utility 721 Barton Springs Road Austin, TX 78704 R.J. Costello/M. T. Hardt City Public Service Board P. O. Box 1771 San Antonio, TX 78296 Revised 12/15/89 LA/NRC/

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ATTACHMENTJ

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SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION-UNIT 1 MONTHLY OPERATING REPORT APRIL ~1990 HOUSTON LIGHTING AND: POWER CO. I NRC DOCKET NO. 50-498 ,

LICENSE NO. NPF-76 1

Reviewed  : . 5N/4oL Supervisor Date Reviewed By: -

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Plant-Eng[eringManager~ Date Approved By: b b\ ha b 7 TD Pland Manager V 'DAte r

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ATTACHMENTJ ST-HL-AE 314 I-4 PAGE 2 0F 6 Monthly Summarv STPEGS Unit 1 remained shutdown during the reporting period for refueling and scheduled maintenance.

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OPERATING DATA REPORT DOCKET NO. 50 498  ;

UNIT 1 DATE May. 4. 1990 <

COMPLETED BY A.P. Kent l TELEPHONE 512/972-7786 OPERATING STATUS

1. REPORTING PERIOD: 04/01-04/30 GROSS Il0URS IN REPORTING PERIOD: 719 2.- CURRENTLY AUTil0RIZED POWER. LEVEL (MWt): 3800 MAX. DEPEND. CAPACITY (MWe. Net): 1250.6 DESIGN ELECTRICAL RATING (MWo Net): 1250.6 .

3. POWER LEVEL TO WilICil RESTRICTED (IF ANY)(MWe Net): None ,

4. REASONS-FOR RESTRICTION (IF ANY): N/A r

TilIS MONTH YR TO DATE CUMULATIVE

5. NUMBER OF 110URS REACTOR WAS CRITICAL, . . . . 0- 2102.8 10350.2

6. REACTOR RESERVE 'SilUTDOWN 110URS . . . . . , . . . . . 0 0 0 ' ,I

7. Il0URS GENERATOR ON LINE......... ,,, .... 0 2026.4 9958.7 0 0 '

8. UNIT RESERVE SilUTDOWN ll0URS.........., .. 0 i

9. GROSS TilERMAL ENERGY GENERATED (MWt)...., 0 7702217 36380651  ;

10. GROSS ELECTRICAL ENERGY GENERATED (MWil).. 0 2619410 12350000 s

11. NET ELECTRICAL ENERGY GENERATED (MWH).... -100'58 2494046 11618715'

12. REACTOR SERVICE FACTOR................... 0% 73.0% 70.2%

13. REACTOR AVAILABILITY FACTOR. . . . . . . . . . . . . . 0% 73.0% 70.2%

14. UNIT SERVICE PACT 0R,..................... 0% 70.4% 67.6%

15. UNIT AVAILABILITY FACTOR................. 0% 70.4% 67.6%-

16. UNIT CAPACITY FACTOR (Using MDC)......... -1.1% 69.3% 63.0%~ l

.17. UNIT CAPACITY FACTOR (Using Design MWe).. -1.1% 69.3% 63.0%

18. UNIT FORCED OUTAGE RATE.................. 0% 5.8% 8.5%

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

N/A

20. IF SHUT DOWN AT END OF REPORT PERIOD, ESTIKATED DATE OF STARTUP: 6/2/90-

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ATTACHMENT.1 ST HL-AE-1%I

. PAGE 4 0F L AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50 498 UNIT 1 DATE Mav. 2. 1990 COMPLETED BY A.P. Kent

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TELEPHONE 512/972 7786 MONTH APRIL 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 N/A 16 0

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UNIT 33RITDOWNS AND POWER REDUCTIONS -

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DOCKET NO. 50-498 v-UNIT -1 ._

DATE 'May. 3. 1990 -

CONFIETfD BT . A.F. E*nt TEIL7 BONE 512/972-7786 REPORT MONTH APRIL No . - Date Type Duration Reason Method of Licensee System Component Cause 4 Corrective Action to (Hours) Shutting Event Code Code Prevent Recurrence Down Report # ^-

Reactor 90-03 900331 S 719.0- -C 4 N/A , V/A N/A ~ Refueling and scheduled maintenance -

outage.-

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Wq 1:F Forced Reeson: ) Method: 'IEEE 805-1983 IEEE 803A-1983 b i S: Scheduled A-Equipment' Failure (Explain)- 1-Manual- (y B-McLatenance or- Test 2-Manual Scram -

C-Refueling 3-Automatic ~ Scram'- -4

'D-Regtdatory RGstriction - 4-Cont. -of Existing @pwp E-Oprator Training & License Exam

Outage

~ F-Admin 2strative: .. 5-Reduction. P.-

C-Operational Error (Explain): 9-Other H-Other (Explain)' -

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hI 5W ST.HL.AE ffj PORVs and Safety Valves Si-- ry

> Q.3 No PORVs or Safety Valves were challenged during this reporting period, s

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hit ACHMENT L l

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{ PAG' t J _ OF 7 SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION  ;

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UNIT 2

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MONTHLY OPERATING REPORT APRIL 1990 HOUSTON LIGHTING AND POWER CO, NRC DOCKET NO. 50-499 LICENSE NO. NPF-80 .,

Reviewed 5 /90 _

Supervisor Date Reviewed By: -

Ah 7!90 PlantEng}%erir.gManager Date Approved By: h N uu% 5. [0 ._

PlantManage) ba'te

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ATTACHMENT 'l ST HL AE-W i

PAGE _a OF 7 Monthly Su==ary STPECS Unit 2 began the reporting period in Mode 3 completing repairs to a Feedwater Regulating Valve that had initiated a reactor trip on 3/26/90.

Repairs to the valve were completed but the unit remained out of service due to a problem during startup with Main Turbine Governor Valve #4 which did not operate correctly. The valve would not close on the trip signal to the valve.

The governor valve replacertent was completed on 4/9/90. With the unit critical in Mode 2 the Main Turbine rupture discs were damaged while warming up the steam lines. Following replacement of the rupture discs the unit was returned to service on 4/11/90 at 1346.

On 4/14/90 at 1703 a Turbine / Reactor trip occurred due to low Electro.

llydraulic Control pressure caused by a rupture of the supply line to Governor Valve W4. Repairs were completed and the unit was returned to service on 4/16/90 at 2033.

The Main Turbine was ramped down and s,ccured at 2028 on 4/19/90 due to an Electro llydraulic Control leak on the #21 West Intercept Valve that developed during maintenance. The intercept valve was declared operable on 4/20/90 and the unit was returned to service at 1108.

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

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• QTTACHMENT .1

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OPERA' LING DATA REPORT DOCKET NO. 50 499 UNIT 2 DATE Mav. 7. 1990 COMPLETED BY A.P. Pent TELEPFONE 512/972 7786 __

OPERATING STATUS

1. REPORTING PERIOD: 04/0104/30 CROSS 110URS IN REPORTING PERIOD: 212 -

2. CURRENTLY AUT110RIZED POWER LEVIL (MWt): 3800 MAX. DEPEND. CAPACITY (MWe Net): 1250 6.,, -

DESIGN ELECTRICAL RATING (MWe !!et): 1250.6

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

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

5. NUMBER OF 110URS REACTOR WAS CRITICAL. . . . . 627.2 2241.1 5218.0

6. REACTOR RESERVE SilUTDOWN ll0URS . . . . . . . . , . 0 0 0 __

7, 110URS GENERATOR ON LINE. . . . . . . . . ........ 400.1 1939.1 4785.8 '

8. UNIT RESERVE SilUTDOWN 110URS . . . . . . . . . . . . . . 0 0 0 ,

9. CROSS TilERMAL ENERGY GENERATED (Mit), . . .1397572 7139286 _16661663

10. CROSS ELECTRICAL ENERGY GENERATED (Mkm)... 460390 2408750 5621780

11. NET ELECTRICAL ENERGY GENERATED (HkH)..... 426138 2272733- 5293907

12. REACTOR SERVICE FACTOR............ ...... 87.24 77.8% 68.8%

13. REACTOR AVAILABILITY FACTOR. . . . . . . . . . . . . . 87.24 77.8% 68.8%

14 UNIT SERVICE FACT 0R...................... 55.6% 67.4% 63.1%

15. UNIT AVAILABILITY FACTOR................. 55.64 67.4% 63.14

16. UNIT CAPACITY FACTOR (Using MDC).......... 47.4% 63.1t 55.84

17. UNIT CAPACITY FACTOR (Using Design MUe).. 47.4% 63.1% 55.8%

18. UNIT FORCED OUTAGE RATE.................. 44.4% 32.6% 26.1%

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

Scheduled 55 day refueling outage to begin September 29, 1990.

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

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. ST HL AE 3%*7 PAGE 4 0F ~7 AVERAGE DAILY UNIT POWER LEVEL 50 499 DOCKET NO.

UNIT 2 DATE Mav. 7. 1990

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COMPLETED BY. A.P. Kent _ _

TELEPil0NE 512/972-7786 - - - -

MONTil APRIL DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe Net) (MWe. Net) ._

1 0 17 911 2 0 18 1132 _

3 0 19 1038 4 0 20 223 -

5 0 , 21 640 6 0 22 1233 7 0 23. 1256 8 0 24 1144 9 0 25 1213 10 0 26' 1250 11 112 27 1253 --

12 1031 28 1253 13 1225 29 1253 14 815 30 1253 15 0 31 N/A 16 0

UNIT SHUTDOWNS AND POWER REDUCTIONS ,

DOCKET NO. 50-499 UNIT 2 DATE May. 7. 1990 COMPLETED BY A.P. Kent TELEPHONE 512/972-7786 REPORT MONTH APRIL No. Date Type Duration Reason Method of Licensee System Component Cause & Corrective Action to (Hours) Shutting Event Code Code Prevent Recurrence Down Report #

Reactor 4 2-90-004 AB V Reactor trip initiated by low-level in 90-04 900326 F 252.8 A the "2C" Steam Generator due to a separation of the Feedwater Regulating Valve disc from the stem. Repairs to the i valve were completed. Each of the remian-ing three feedwater regulating valve plugs were welded to the stems.

A 3 2-90-005 SB V Turbine / Reactor trip due to low Electro-90-05 900414 F 51.5 Hydraulic pressure caused by a rupture of the supply line to Main Turbine Governor Valve #4. The leak was repaired. The investigation of the cause is continuing.

5 3 4 5 mS>

1 2 Reason: Method: IEEE 805-1983 IEEE 803A-198] 7 c)

F: Forced A-Equipment Failure (Explain) 1-Manual 9 %;h[

S: Scheduled B-Maintenance or Test 2-Manual Scram f,g}

4;-4 C-Refueling 3-Automatic Scram D-Regulatory Restriction 4-Cont. of Existing $ jhgj E-Operator Training 6 License Exam Outage F-Administrative 5-Reduction sj G-Operational Error (Explain) 9-Other H-Other (Explain) l

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UNIT SHUTDOWNS AND POWER REDUCTIONS ..

DOCKET NO. 50-499 .

UNIT 2 DATE May. 7. 1990 COMPLETED BY A.P. Kent TELEPHONE 512/072-7786 REPORT MONTH APRIL No. Date Type Duration Reason Method of Licensee System Component Cause & Corrective Action to (Hours) Shutting Event Code Code Prevent Recurrence Down Report #

Reactor 90-06 900419 F 14.6 A 1 N/A SB V The unit was removed from service to repair an Electro-Hydraulic Control leak on #21 West Intercept Valve. The leak was repaired.

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I 1 2 3 Method:

4 IEEE 805-1983 5 IEEE 803A-198;;mK' >

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O F: Forced Reason:

S: Scheduled A-Equipment Failure (Explain) 1-Manual l Q B-Maintenance or Test 2-Manual Scram W$

C-Refueling 3-Automatic Scram Y$

D-Regulatory Restriction 4-Cont. of Existing o e 1.r E-Operator Training & License Exam Outage F-Administrative 5-Reduction 4 G-Operational Error (Explain) 9-Other H-Other (Explain) awMim

ATTACHMENT 2 i* -

- ST PAGE ~7 HL-AE0F396 I 7 PORVs and Safety Valves Su===ry No PORVs or Safety Valves were challenged during this reporting period.

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