ML20137X581

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Monthly Operating Repts for Mar 1997 for South Tx Project Units 1 & 2
ML20137X581
Person / Time
Site: South Texas  STP Nuclear Operating Company icon.png
Issue date: 03/31/1997
From: Bergendahl D, Hill R, Parkey G
HOUSTON LIGHTING & POWER CO.
To:
Shared Package
ML20137X571 List:
References
NUDOCS 9704220085
Download: ML20137X581 (12)
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( t i SOUTIITEXAS PROJECT ELECTRIC GENERATING STATION UNIT 1 MONT11LY OPERATING REPORT MARCil 1997 . HOUSTON LIGilTING AND POWER CO. NRC DOCKET NO. 50-498 LICENSE NO. NPF-76 i Reviewed By: O't@A Date ' Oh. QGENDAllL Approved By: - IN[f7 G.L. PARKEY ( Datl ' ' t [ L i 's I I. 9704220085 970415 PDR ADOCK 05000498 R PDR _, i I 

 ,-      .'                                MONTilLY

SUMMARY

STPEGS Unit 1 operated during the reporting period at full power with no unit shutdowns or significant power reductions. l 1 I i i 

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              .'                                OPERATING DATA REPORT
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                                                                                                                                               -l DOCKETNO. 50-498 UNIT 1 DATE Anr. 9.1997 COMPLETED BY R.L. Hill TELEPlIONE 512 972-7667 OPERATING STATUS                                                                                                                       I
1. REPORTING PERIOD: 3/1/97-3/3I/97 GROS.3 HOURS IN REPORTING PERIOD: 244 :1
2. CURRENTLY AUTHORIZED POWER LEVEL (Mwt): .23H0  !

MAXIMUM DEPENDABLE CAPACITY (MWe-Net): 1250.6 DESIGN ELECTRICAL RATING (MWe-Net): 1250.6

3. POWER LEVEL TO WHICH RESTRICTED (IF ANY) (MWe-Net): N.ont
4. -{

REASONS FOR RESTRICTJON (IF ANY): N/A TFIS MONTH YR TO DATE CUMULATIVE i

5. NUMBER OF HOURS REACTOR CRITICAL 24tQ 2.120.3 51.999.8
6. REACTOR RESERVE SHUTDOWN H9URS Q~ Q Q l
7. HOURS GFNERATOR ON LINE 2400 2.110.3 50.663.7  ;
3. UNIT RESERVE SHUTDOWN HOURS Q Q Q -
9. GROSS THERMAL ENERGY GENERATED (MWH) 2.837.283 8.005.715 187.240.979
10. GROSS ELECTRICAL ENERGY GENERATED (MWH) 975.700 2.752.190 63.813.900
11. NET ELECTRICAL ENERGY GENERATED (MWH) 941.820 2.646.090 60.685.610
12. REACTOR SERVICE FACTOR 100.0 % 2fL2% 62.0 %
13. REACTOR AVAILABILITY FACTOR 100.0 % 21L2% 61Q%
14. UNIT SERVICE FACTOR 100.0 % 22.2% 62 2.%
15. UNIT AVAlLABILITY FACTOR 100.0 % 22.7 % 612%

16; UNIT CAPACITY FACTOR (Using MDC) 101.2 % ElLQ% 6L4%

17. UNIT CAPACITY FACTOR (Using Design MWe) 101.2 % 2fLQ% 6L4%
      = 18. UNIT FORCED OUTAGE RATE                                                        Q.Q%           QA%                       22.2 %
19. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE, AND DURATION OF EACH):'

Scehduled 24-hour outage on April 5, to allow control rod testing.

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

t 4 AVERAGE DAILY UNIT POWER LEVEL DOCKETNO. 50-498 UNIT 1 'l DATE Anr. 9.1997 l COMPLETED BY R.L. Hill l TELEPHONE 512 972-7667 l MONTli MARCH l DAY " AVERAGE DAILY POWER - DAY AVERAGE DAILY POWER LEVEL LEVEL , (MWe-Net) (MWe-Net) j 

                   'l'                    1261                                              17                               1260 2                     1261                                              18                               1260 3                     1261                                              19                               126D 4                     1261                                              20                               1211 5                     1261                                              21                               1261 6                     1261-                                             22                               1212 7                     1261                                              23                               1212 8                     J264                                              24                               1251 9                     J260                                              25                               1260 10                    J2ii'                                             26                               12]D 11                    1261                                              27                               1261 12 -                  1248                                              28                               1100 13                    1241                                              29                               110Q 14                    1260                                              30                               1101 15                    1261                                              31                                1100 16                    1261 l

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKETNO. 50-498 ., UNIT 1 DATE Apr. 9.1997 COMPLETED BY RL Hill - TELEPHONE 512 972-7667 REPORT MONTH MARCH 

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I 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 t THERE WERE NO UNIT SHUTDOWNS OR SIGNIFICANT POWER REDUCTIONS DURING TIIE REPORTING PERIOD i L 6 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) m -----r -a -- ---.--------_..-.u----.w_____ - _ _ - - - . - - _ - - - --a---------_---_--- ~ .-m " 

 ,                  PORVS AND SAFETY VALVE

SUMMARY

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

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SOUTH TEXAS PROJECT 1 ELECTRIC GENERATING STATION UNIT 2 MONTHLY OPERATING T iPORT MARCH 1997 HOUSTON LIGHTING AND POWER CO, . NRC DOCKET NO. 50-499 . 

                                                                      ! ICENSE NO. NPF-80                                                                         4 Reviewsf By:                             [Il                                                                                   i D.M. BERgNDAID                                                 Datd                                               I Approved By:                              A                                    W //' [ 7 R.E. kiASSE                                                    Dale l

1 1 d I i i l i 

 ;                                           MONTIILY

SUMMARY

STPEGS Unit 2 began the reporting period operatirg at 87% reactor power with ascension to full power in progress. The unit was returned to senice on Fet ruary 25, following scheduled refueling. Full power was achieved on March 1, at 1703. On March 19, at 1554 a reactor trip occt.rred due to a main turbine electro-hydraulic contml (EllC) system pressure reduction below the low-pressure setpoint. The momentary reduction in plassure , was caused when one of the EHC solenoid valves power supply was interrupted due to a loose soldered wire. Corrective maintenance was performed and the unit was returned to senice on March 22, at 0225 

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and achieved full power on March 23, at 0205. I I On March 26, at 2147 a manual trip was initiated after a loss of feedwater to B steam generator when the feedwater regulating valve closed. A defective relay in the valve circuitry caused the closure. The relay was replaced and the unit returned to senice on March 28, at 1010. Full power was achieved on March 29, at 0130. The unit operated for the remainder of the reporting period at full power with no unit shutdowns or significant power reductions. l 4 i l l

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             ;         I                                  OPERATING DATA REPORT                                                                             i i

DOCENT. 50-499 UNIT 2 DATE Apr. 9.1997 COMPLETED BY R.L. Hill TELEPHONE 512 972-7667 OPERATING STATUS I L 1. REPORTING PERIOD: 3/1/97-3/31/97 GROSS HOURS IN REPORTING PERIOD: 244

2. CURRENTLY AUTHORIZED POWER LEVEL (Mwt): .lBDQ MAXIMUM DEPENDABLE CAPACITY (MWe-Net): 1250.6 j DESIGN ELECTRICAL RATING (MWe-Net): 1250.6  !
3. POWER LEVEL TO WHICH RESTRICTED (IF ANY) (MWe-Net): Honc
4. REASONS FOR RESTRICTION (IF ANY): N/A THIS MONTH YR TO DATE CUMULATIVE
5. NUMBER OF HOURS REACTOR CRITICAL 6HL2 1,699.5 48.254.0 i

j' 6. - REACTOR RESERVE SHUTDOWN HOURS Q Q Q

7. HOURS GENERATOR ON LINE 6.4,9 L 1.643.0 46.835.5 8.' UNIT RESERVE SHUTDOWN HOURS Q Q Q
    =
9. GROSS THERMAL ENERGY GENERATED (MWH) 2.418.268 6.019.104 172.835.713
10. GROSS ELECTRICAL ENERGY GENERATED (MWH) 825.579 2.059.033 58.808.314 i

l1. NET ELECTRICAL ENERGY GENERATED (MWH) 790.375 1.970.896 56.078.172

12. REACTOR SERVICE FACTOR 91.6 % 78.7 % 70.7 %

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13. REACTOR AVAILABILITY FACTOR 91.6 % 78.7 % 70.7 %
14. UNIT SERVICE FACTOR 87.2 % 76.1 % 68.6 %
15. UNIT AVAILABILITY FACTOR 87.2 % 76.1 % 684.%

( 16. UNIT CAPACITY FACTOR (Using MDC) 84.9 % 73.0 % 65.7 % i

17. UNIT CAPACITY FACTOR (Using Design MWe) 84.9 % 73.0 % 65.7 %

i !- 18. UNIT FORCED OUTAGE RATE 12.8 % 11% 21.8 % i

19. SHUTDOWNS SCHEDULED OVER NEXT 6 MONTHS (TYPE, DATE, AND DURATION OF EACH):
20. IF SHUTDOWN AT END OF REPORT PERIOD, ESTIMATED DATE OF STARTUP: N/A f-4
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e i i l' .. l AVERAGE DAILY' UNIT POWER LEVEL r T DOCKETNO. 50-499 UNIT 2 l- DATE Aor. 9.1997  ; COMPLETED BY R.L. Hill  ; 

}                                                                              TELEPilONE - 512 972-7667 1                                                                                                                  '

MONTH MARCH j 

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, DAY AVERAGE DAILY POWER DAY AVERAGE DAILY POWER ! LEVEL LEVEL' l (MWe-Net) (MWe-Net) i i 1202 17 1212 - t l 2 12fiQ l8 126Q  ! 3 1261 19 111 4 1261 20 Q l 5- 12fil 21 0 j 1 6 J26Q 22 456 7 1261 23 1216 8 1260 24 1211  ; 9 1261 25- 1251 10 1212 26 1132 11 1260 27 0 12 124Q 28 352 13 1260 29 1214 14 1260 30 1251 15 1261 31 1260 16 1261

UNIT SIIUTDOWNS AND POWER REDUCTIONS DOCKETNO. 50-499 , UNIT 2 DATE Aor. 9. I997 COMPLETED BY R_L Hill. . TELEPHONE 512 972-7667 REPORTMONTH MARCH I 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 97-03 970319 F 58.5 A 3 2-97-004 TA SOL A reactor trip occurred due to a main turbine electro-hydraulic control (EHC) system pressure reduction below the low-pressure setpoint. The momentary reduction in the pressure was caused when one of the EllC solenoid valves power supply was interrupted due to a loose soldered wire. All the solenoid valves were inspected and necessary corrective maintenance performed. 97-04 970326 F 36.4 A 2 2-97-005 SJ RLY A manual trip was initiated after a loss of feedwater to B steam generator when the feedwater regulating valve close. A defective relay in the valve circuitry caused the closure. The relay was replaced and the other related relays inspected 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) 

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   -   ;               PORVS AND SAFETY VALVE

SUMMARY

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

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