NOC-AE-02001385, July 2002 Monthly Operating Report for South Texas Units 1 & 2

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July 2002 Monthly Operating Report for South Texas Units 1 & 2
ML022380249
Person / Time
Site: South Texas  STP Nuclear Operating Company icon.png
Issue date: 08/19/2002
From: Mallen F
South Texas
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
G02, NOC-AE-02001385, STI: 31481030
Download: ML022380249 (14)
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Text

Nuclear Operating Company kh T= ftclea" ude tr n, Chp PO 8a 219 W&*d2J Tew lW3 August 19, 2002 NOC-AE-02001385 File No.: G02 10CFR50.71 STI: 31481030 U. S. Nuclear Regulatory Commission Attention: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852 South Texas Project Units 1 and 2 Docket Nos. STN 50-498, STN 50-499 Monthly Operating Reports for July 2002 Pursuant to 10CFR50.71(a) and South Texas Project Electric Generating Station (STPEGS) Technical Specification 6.9.1.5, attached are the Monthly Operating Reports for July 2002. If you should have any questions on this matter, please contact R.L. Hill at (361) 972-7667.

F.H. Mallen Manager, Planning &

Controls Attachments: 1) STPEGS Unit 1 Monthly Operating Report - July 2002

2) STPEGS Unit 2 Monthly Operating Report - July 2002

cc:

(paper copy) (electronic copy)

Ellis W. Merschoff A. H. Gutterman, Esquire Regional Administrator, Region IV Morgan, Lewis & Bockius LLP U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 M. T. Hardt/W. C. Gunst Arlington, Texas 76011-8064 City Public Service U. S. Nuclear Regulatory Commission Mohan C. Thadani Attention: Document Control Desk U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike R. L. Balcom/D. G. Tees Rockville, MD 20852 Reliant Energy, Inc.

Richard A. Ratliff A. Ramirez Bureau of Radiation Control City of Austin Texas Department of Health 1100 West 49th Street C. A. Johnson/A. C. Bakken III Austin, TX 78756-3189 AEP - Central Power and Light Company Cornelius F. O'Keefe Jon C. Wood U. S. Nuclear Regulatory Commission Matthews & Branscomb P. 0. Box 289, Mail Code: MN116 Wadsworth, TX 77483 C. M. Canady City of Austin Electric Utility Department 721 Barton Springs Road Austin, TX 78704

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION UNIT 1 MONTHLY OPERATING REPORT JULY 2002 STP NUCLEAR OPERATING COMPANY NRC DOCKET NO. 50-498 LICENSE NO. NPF-76 Approved By:

E.D.Y*PIN Date

MONTHLY

SUMMARY

South Texas Project Unit 1 operated during the reporting period at full power with no unit shutdowns or significant power reductions.

OPERATING DATA REPORT DOCKET NO. 50-498 UNIT 1 DATE Aug. 12, 2002 COMPLETED BY R.L. Hill TELEPHONE 361.972.7667 OPERATING STATUS

1. REPORTING PERIOD: 07/1/02-07/31/02 GROSS HOURS IN REPORTING PERIOD: 744
2. CURRENTLY AUTHORIZED POWER LEVEL (Mwt): 3853 MAXIMUM DEPENDABLE CAPACITY (MWe-Net): 1268 DESIGN ELECTRICAL RATING (MWe-Net): 1268
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 CRITICAL 744.0 5,087. 95,036.9
6. REACTOR RESERVE SHUTDOWN HOURS 0 0 0
7. HOURS GENERATOR ON LINE 744.0 5,087.0 93406.8
8. UNIT RESERVE SHUTDOWN HOURS 0 0 0
9. GROSS THERMAL ENERGY GENERATED (MWH) 2,839,756 19,383,703 348,682,043
10. NET ELECTRICAL ENERGY GENERATED (MWH) 944,979 6,438,579 113,786,693
11. REACTOR SERVICE FACTOR (%) 100.0 100.0 77.8
12. REACTOR AVAILABILITY FACTOR (%) 100.0 100.0 77.8
13. UNIT SERVICE FACTOR (%) 100.0 100.0 76.5
14. UNIT AVAILABILITY FACTOR (%) 100.0 100.0 76.5
15. UNIT CAPACITY FACTOR - Using MDC (%) 100.2 101.2 74.5
16. UNIT CAPACITY FACTOR - Using DER (%) 100.2 101.2 74.5
17. UNIT FORCED OUTAGE RATE (%) 0.0 0.0 13.6
18. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE, & DURATION OF EACH): N/A
19. IF SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-498 UNIT 1 DATE Aug. 12, 2002 COMPLETED BY R.L. Hill TELEPHONE 361.972.7667 MONTH JULY DAY AVERAGE DAILY POWER DAY AVERAGE DAILY POWER LEVEL LEVEL (MWe-Net) (MWe-Net) 1 1271 17 1274 2 1272 18 1273 3 1274 19 1272 4 1274 20 1270 5 1273 21 1269 6 1274 22 1268 7 1272 23 1269 8 1266 24 1266 9 1264 25 1265 10 1273 26 1266 11 1272 27 1268 12 1271 28 1269 13 1268 29 1270 14 1270 30 1270 15 1269 31 1270 16 1272

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-498 UNIT 1 DATE Aug. 12, 2002 COMPLETED BY R.L. Hill TELEPHONE 361.972.7667 REPORT MONTH JULY 12 3 4 5 No. Date Type Duration Reason Method of Licensee System Component Cause & Corrective Action to Prevent Recurrence (Hours) Shutting Event Code Code Down Report #

Reactor THERE WERE NO UNIT SHUTDOWNS OR SIGNIFICANT POWER REDUCTIONS DURING THE REPORTING PERIOD I_ IIIII I I 1 2 3 4 5 F: Forced Reason: Method: IEEE 805-1983 IEEE 803-1983 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 & License Exam Outage F-Administrative 5-Reduction G-Operational Error (Explain) 9-Other H-Other (Explain)

PORVS AND SAFETY VALVE

SUMMARY

There were no PORV or Safety Valves challenged during the reporting period.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION UNIT 2 MONTHLY OPERATING REPORT JULY 2002 STP NUCLEAR OPERATING COMPANY NRC DOCKET NO. 50-499 LICENSE NO. NPF-80 Approved By: Da /71c E.D. HA Date

MONTHLY

SUMMARY

South Texas Project Unit 2 began the reporting period operating at full power. On July 7, at 2312 an automatic reactor trip occurred due to the failure of an inverter that caused the distribution panel to lose power. The loss of the distribution panel caused the main feed water regulating valves to fully open.

This resulted in the water level in the steam generators to increase, which caused the turbine and subsequently the reactor to trip. The inverter failure was caused by a fuse failure that resulted from a voltage spike in the electrical system that provides power to the distribution panel. The fuse was replaced and the unit was returned to service on July 9, at 1414. Full power was achieved on July 10, at 1130.

OPERATING DATA REPORT DOCKETNO. 50-499 UNIT 2 DATE Aug. 12, 2002 COMPLETED BY R.L. Hill TELEPHONE 361.972.7667 OPERATING STATUS

1. REPORTING PERIOD: 07/1/02-07/31/02 GROSS HOURS IN REPORTING PERIOD: 744
2. CURRENTLY AUTHORIZED POWER LEVEL (MWt): 3800 MAXIMUM DEPENDABLE 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 CRITICAL 717.2 4,992.1 92,806.1
6. REACTOR RESERVE SHUTDOWN HOURS 0 0 0
7. HOURS GENERATOR ON LINE 705.0 4,938.8 90,5665
8. UNIT RESERVE SHUTDOWN HOURS 0 0 0
9. GROSS THERMAL ENERGY GENERATED (MWH) 2,665,426 18,790,267 337,950,798
10. NET ELECTRICAL ENERGY GENERATED (MWH) 861,073 6,126,097 110,084,218
11. REACTOR SERVICE FACTOR (%) 96.4 98.1 80.7
12. REACTOR AVAILABILITY FACTOR (%) 964 98.1 80.7
13. UNIT SERVICE FACTOR (%) 94.8 97.1 78.8
14. UNIT AVAILABILITY FACTOR (%) 94.8 97.1 78.8
15. UNIT CAPACITY FACTOR - Using MDC (%) 92.5 96.3 76.6
16. UNIT CAPACITY FACTOR - Using DER (%) 92.5 96.3 76.6
17. UNIT FORCED OUTAGE RATE (%) 5.2 2.9 13.4
18. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE, & DURATION OF EACH):

Scheduled 70-day outage to allow refueling and steam generator replacement to begin on October 2, 2002.

19. IF SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A

AVERAGE DAILY UNIT POWER LEVEL DOCKETNO. 50-499 UNIT 2 DATE Aug. 12, 2002 COMPLETED BY R.L. Hill TELEPHONE 361.972.7667 MONTH JULY DAY AVERAGE DAILY POWER DAY AVERAGE DAILY POWER LEVEL LEVEL (MWe-Net) (MWe-Net) 1 1242 17 1241 2 1242 18 1231 3 1242 19 1239 4 1241 20 1238 5 1241 21 1236 6 1242 22 1235 7 1198 23 1235 8 0 24 1232 9 118 25 1233 10 1143 26 1234 11 1239 27 1236 12 1237 28 1237 13 1234 29 1239 14 1237 30 1239 15 1237 31 1240 16 1240

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-499 UNIT 2 DATE Aug. 12,2002 COMPLETED BY R.L. Hill TELEPHONE 361.972.7667 REPORT MONTH JULY 1 2 3 4 5 No. Date Type Duration Reason Method of Licensee System Component Cause & Corrective Action to Prevent Recurrence (Hours) Shutting Event Code Code Down Report #

Reactor 02-02 020707 F 39.0 A 3 02-02-003 JB INVT Automatic reactor trip occurred due to the failure of an inverter that caused the distribution panel to lose power. The loss of the distribution panel caused the main feed water regulating valves to fully open. This resulted in the water level in the steam generators to increase, which caused the turbine and subsequently the reactor to trip. The inverter failure was caused by a fuse failure that resulted from a voltage spike in the electrical system that provides power to the distribution panel. The fuse was replaced.

1 2 3 4 5 F: Forced Reason: Method: IEEE 805-1983 IEEE 803-1983 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 & License Exam Outage F-Administrative 5-Reduction G-Operational Error (Explain) 9-Other H-Other (Explain)

PORVS AND SAFETY VALVE

SUMMARY

There were no PORV or Safety Valves challenged during the reporting period.

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