NOC-AE-03001515, March 2003 Monthly Operating Report for South Texas Project Units 1 & 2

March 2003 Monthly Operating Report for South Texas Project Units 1 & 2

ML031110414
Person / Time
Site:	South Texas
Issue date:	04/15/2003
From:	Mallen F South Texas
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
G02, NOC-AE-03001515, STI:31590245
Download: ML031110414 (14)

Text

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b T=Z77433 April 15, 2003 NOC-AE-03001515 File No.: G02 10CFR50.71 STI: 31590245 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 March 2003 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 March 2003. If you should have any questions on this matter, please contact R.L. Hill at (361) 972-7667.

F.H. Mallen Manager, Financial Controls Attachments: 1) STPEGS Unit 1 Monthly Operating Report - March 2003

2) STPEGS Unit 2 Monthly Operating Report - March 2003

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 L. D. Blaylock 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 Rockville, MD 20852 Texas Genco, LP Richard A. Ratliff A. Ramirez Bureau of Radiation Control City of Austin Texas Department of Health 1100 West 49th Street C. A. Johnson 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: MN1 16 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 MARCH 2003 STP NUCLEAR OPERATING COMPANY NRC DOCKET NO. 50-498 LICENSE NO. NPF-76 Approved By: / oJ E.D. IN Date

MONTHLY

SUMMARY

South Texas Project Unit 1 began the reporting period operating at full power. On March 1, at 0154 the unit was manually tripped in response to a loss of condensate flow caused by a failed power supply. The power supply was replaced, the unit returned to service on March 3, at 0610 and full power was achieved on March 6, at 0112.

On March 14, the unit began a reactor power coastdown due to fuel burnup. Coastdown operations were successfully completed and the unit was removed from service on March 26, at 0001 for refueling.

OPERATING DATA REPORT DOCKET NO. 50-498 UNIT I DATE Apr. 8. 2003 COMPLETED BY R L. Hill TELEPHONE 361.972.7667 OPERATING STATUS

1. REPORTING PERIOD: 3/1/03-3/31/03 GROSS HOURS IN REPORTING PERIOD: 744

2. CURRENTLY AUTHORIZED POWER LEVEL (Mwt): 3,853 MAXIMUM DEPENDABLE CAPACITY (MWe-Net): 1.250 6 DESIGN ELECTRICAL RATING (MWe-Net): 1,250.6

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 555 0 197L0 100,500 1

6. REACTOR RESERVE SHUTDOWN HOURS 0 0 0

7. HOURS GENERATOR ON LINE 547.7 1.963.7 98,856.9

8. UNIT RESERVE SHUTDOWN HOURS 0 0 0

9. GROSS THERMAL ENERGY GENERATED (MWH) 1,943.922 7,348.061 369,298,524

10. NET ELECTRICAL ENERGY GENERATED (MWH) 647,291 2,463,746 120,679,801

11. REACTOR SERVICE FACTOR (%) 74.6 91.2 78.5

12. REACTOR AVAILABILITY FACTOR (%) 74.6 91.2 78.5

13. UNIT SERVICE FACTOR (%/) 73.6 90 9 77.3

14. UNIT AVAILABILITY FACTOR (%) 73.6 90.9 77.3

15. UNIT CAPACITY FACTOR - Using MDC (%) 69.6 91.2 75.4

16. UNIT CAPACITY FACTOR - Using DER (%) 69.6 91.2 75.4

17. UNIT FORCED OUTAGE RATE (%) 8.7 2.6 13.2

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: 4/20/03

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-498 UNIT 1 DATE Apr. 8. 2003 COMPLETED BY R.L Hill TELEPHONE 361.972 7667 MONTH MARCH DAY AVERAGE DAILY POWER DAY AVERAGE DAILY POWER LEVEL LEVEL (MWe-Net) (MWe-Net) 1 55 17 1169 2 0 18 1187 3 383 19 1193 4 1209 20 1179 5 1242 21 1175 6 1274 22 1163 7 1271 23 1153 8 1272 24 1142 9 1286 25 974 10 1283 26 0 11 1271 27 0 12 1254 28 0 13 1225 29 0 14 1226 30 0 15 1229 31 0 16 1156

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-498 UNIT 1 DATE Apr. 8. 2003 COMPLETED BY R.L. Hill TELEPHONE 361.972 7667 REPORT MONTH MARCH 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 03-01 030301 F 52.3 A 2 01-03-002 SD JX Manual reactor trip in response to a loss of condensate flow caused by a failed power supply. The power supply 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

On March 12, with Unit 1 at 100 percent reactor power, pressurizer PORV PCV-0656A momentarily opened and then closed during the performance of an analog channel operational test. The surveillance test procedure (OPSP02-RC-0455) was suspended after the PORV lifted.

It was determined that the surveillance test included a recently revised procedural step that was technically incorrect. All other scheduled surveillance tests were reviewed to evaluate if any recent revisions would have a similar impact.

SOUTH TEXAS PROJECT ELECTRIC GENERATING STATION UNIT 2 MONTHLY OPERATING REPORT MARCH 2003 STP NUCLEAR OPERATING COMPANY NRC DOCKET NO. 50499 LICENSE NO. NPF-80 Approved By: CRUX E.D. I&LPIN 7',

Date od

MONTHLY

SUMMARY

South Texas Project Unit 2 began the reporting period shutdown for repairs on the main turbine/generator rotor train. Following repairs the unit was returned to service on March 13, at 1819 and achieved full power on March 15, at 0200.

OPERATING DATA REPORT DOCKETNO. 50-499 UNIT 2 DATE Apr. 8.2003 COMPLETED BY R.L. Hill TELEPHONE 361.972.7667 OPERATING STATUS

1. REPORTING PERIOD: 3/1103-3/31/03 GROSS HOURS IN REPORTING PERIOD: 744

2. CURRENTLY AUTHORIZED POWER LEVEL (MWt): 3,853 MAXIMUM DEPENDABLE CAPACITY (MWe-Net): 1,250.6 DESIGN ELECTRICAL RATING (MWe-Net): 1,250.6

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 466.5 546.7 95,104.4

6. REACTOR RESERVE SHUTDOWN HOURS 0 0 0

7. HOURS GENERATOR ON LINE 447.8 513.1 92.805.5

8. UNIT RESERVE SHUTDOWN HOURS 0 0 0

9. GROSS THERMAL ENERGY GENERATED (MWH) 1,618.988 1,773.989 346,187.640

10. NET ELECTRICAL ENERGY GENERATED (MWH) 532.988 579.365 112.757.332 '

11. REACTOR SERVICE FACTOR (%) 62.7 25.3 78.7

12. REACTOR AVAILABILITY FACTOR (%) 62.7 25.3 78.7

13. UNIT SERVICE FACTOR (%) 60.2 23.8 76 8

14. UNIT AVAILABILITY FACTOR (%) 602 23.8 76 8

15. UNIT CAPACITY FACTOR - Using MDC (%) 57.3 21.4 74 6

16. UNIT CAPACITY FACTOR - Using DER (%) 57.3 21.4 74.6

17. UNIT FORCED OUTAGE RATE (%) 39.8 762 14.8

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 DOCKETNO. 50-499 UNIT 2 DATE Apr. 8, 2003 COMPLETED BY R.L. Hill TELEPHONE 361.972.7667 MONTH MARCH DAY AVERAGE DAILY POWER DAY AVERAGE DAILY POWER LEVEL LEVEL (MWe-Net) (MWe-Net) 1 0 17 1273 2 0 18 1275 3 0 19 1275 4 0 20 1275 5 0 21 1279 6 0 22 1278 7 0 23 1278 8 0 24 1278 9 0 25 1276 10 0 26 1260 11 0 27 1269 12 0 28 1263 13 27 29 1263 14 543 30 1270 15 1277 31 1272 16 1278

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-499 UNIT 2 DATE Apr. 8. 2003 COMPLETED BY R L Hill TELEPHONE 361 972 7667 REPORT MONTH MARCH 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 03-01 030124 F 296.2 A 4 N/A TA TRB Main turbine/generator removed from service due to excessive vibration.

1 2 3 4 5 Reason: Method: IEEE 805-1983 IEEE 803-1983 F: Forced 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

On March 9, Unit 2 was transitioning Reactor Coolant System (RCS) temperature control from Main Steam (MS) Power Operated Relief Valve (PORV) 2C to MS PORV 2B, when an unexpected MS Low Compensated Pressure Safety Injection signal was initiated. The plant was stable in Mode 3 at normal operating pressure (2235 psig) and temperature (567 degrees Fahrenheit). All four (4) MS Isolation valves were closed for ongoing work on turbine train. MS PORV 2C had been in service for temperature control for approximately three and one-half days.

Temperature control was being transferred to MS PORV 2B to support the work schedule.

During recovery from the safety injection event, RCS Pressurizer PORV 0655A unexpectedly opened due to increasing pressurizer pressure. This resulted when the spray valves closed due to the instrument air isolation with the pressurizer heaters in manual. The pressurizer heaters were secured and the RCS pressure stabilized.