ML20058A251

Monthly Operating Rept for Sept 1990 for Comanche Peak Steam Electric Station

ML20058A251
Person / Time
Site:	Comanche Peak
Issue date:	09/30/1990
From:	Buschbaum D, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-90545, NUDOCS 9010250355
Download: ML20058A251 (7)

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Log # TXX 90545 File # 10010 Ref.

1. 10CFR50.36 nlELECTRIC October 15, 1990 William J. Cahill, Jr.

[secushs ikr />rsuknt U. S. Nuclear Regulatory Commission Attn:

Document Control Desk Washington, DC 20555

$UBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)

DOCKET NO. 50 445 MONTHLY OPERATING REPORT FOR SEPTEMBER 1990 Gentlemen:

Attached is the Monthly Operating Report for September 1990 prepared and submitted pursuant to Specification 6.9.1.5 of Appendix A (Technical Specifications) to the Comanche Peak Unit 1 Steam Electric Station Operating l

License.

Sincerely.

William J. Cahill, Jr.

l Dy:

D. R. Woodlan Docket Licensing Manager JLR/cid Attachment c

Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3)

Mr. J. H. Wilson, NRR l

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COMANCHE PEAK STEAM ELECTRIC STATION, UNIT 1 NRC MONTHLY OPERATING REPORT DOCKETNO:

50 445 UNIT:

CPSES1 DATE:

October 5.1990 COMPLETED BY:

D. E. Butchhaum TELEPHONE:

lL1.Z-897 5851 L

OPERATING STATUS 1.

Reporting Period: Sectomber 1990 Gross hours in reporting period: 220.

2.

Currently authorized power level (MWt): 3.4.11. Max, depend. capacity (MWo. Net): 1132 Design Electrical Rating (MWo. Net): 11ED i

3.

Power level to which restricted (if any) (MWo. Net): None

'4.

Reasons for restriction (if any):

THIS MONTH YRTO DATE CUMULATIVE 5.

Number of hours reactor was critical 595.2 1006.2 1006.2 6.

Reactor reservo shutdown hours 124.8 161.8 161.8 7.

Hours generator on line 557.2 961.2 961.2 8.

Unit reserve shutdown hours 0

0 0

9.

Gross thermal energy generated (MWH) 1,480,101 2,798.111 2,798,111 a

10. Gross electrical energy generated (MWH) 474,111 898,987 898,987 j

11. Net electrical energy generated (MWH) 440,564 844,204 844,204

12. Reactor Service factor 82.7 89.0 89.0 j

13. Reactor availability factor 100.0 100.0 100.0 l

14. Unit service factor 77.4 82.3 2 <.3

15. Unit availability f actor 77.4 82.3 82.3

16. Unit capacity factor (Using MDC) 53.8 63.6 63.6

17. Unit capacity factor (Using Design MWo) 53.2 62.9 62.9

18. Unit forced outage rate 21.3 16.9 16.9

19. Shutdowns schedulod over next 6 months (Type, Date, and Duration of each): a) Maintenance, 901102, 1 weekt b) Maintenance / Surveillance, 910401, 2 3 weeks.

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20. If shutdown at end of report porlod, estimated date of startup:

21. Units in test status (prior to commercial operation):

FORECAST ACH;EVED Initlai Criticality 900403 900403

'I inillal Electricity 900501 900424 Commercial Operation 900721 900813 l

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4 Attachment to TXX-90545 Page 2 of 6 AVERAGE DAILY UNIT POWER LEVEL-DOCKETNO:

50-445 UNIT:

CPSES1 DATE:

October 5.1990 COMPLETED BY:

D. E. Butchbaum TELEPHONE:

817-897-5851 MONTH: SEPTEMBER 1990 DAY AVERAGE DAtLY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWo Net)

(MWe Net) 1 1077 17 409 2

1078 18 896 3

1080 19 1089 4

1080 20 1089 5

1080 21 1090 6

1081 22 858 7

0 23 16 8

0 24 287 9

186' 25 829 10 284 26 922 11 0

27 825 12 0

28 828 13 94 29 802 14 289 30 828 15 340 16 0

Atta'ch eni to TXX 90545 Page 3 of 6

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKETW);

50-445 UNIT:

CPSES1 DATE:

Ontaher 5.1990 COMPLETED BY:

D. E. Briehbaum TELEPHONE:

817 897 5851 MONTH: SEPTEMBER 1990 9/1 0000 Unit started month in MODE 1.

9/7 0036 Manual Rx Trip, Unit entered MODE 3. Rx tripped to avoid High SG #2 level due to Foodwater Control valve falling open. LER 90 027 to follow.

9/8 0326 Unit entered MODE 2.

0433 Unit entered MODE 1.

1429 Rx Trip, Unit entered MODE 3. Lightning strike induced voltage spikes and generated High Flux Rate Trip. LER 90 028 to follow.

9/9 0550 Unit entered MODE 2.

0717 Unit entered MODE 1.

9/10 0916 Rx Trip, Unit entered MODE 3. Rx Trip on Turbine Trip due to high Motsture Separator Roheater (MSR) level. Faulty level control caused flooded MSR.

LER 90 029 to follow.

9/13 0240 Uni, entered MODE 2.

f 0357 Unit entered MODE 1.

9/15 2050 Rx Trip, Unit entered MODE 3. Manual Rx Trip to avoid Lo Lo SG #3 Level whon Main Feedwater Pump tripped on low suction pressure following Heater Drain Pump Trip. LER 90 030 to follow.

9/16 1400 Unit entered MODE 2.

1333 Unit entered MODE 1. Extensive Balance of Plant grooming conducted at reduced power levels over the next two days.

9/23 0439 Unit entered MODE 2 to conduct maintenance on Feedwater Control Valves.

Decision to enter outage made following heater drain system induced transient that required reduced power to investigate and correct leaks caused by transient.

1225 Unit entered MODE 1.

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. Attachmont to TXX 90545 Page 4 of 6 1

1831 Turbine tripped with Rx at approximately 31% RTP. Unit remained in MODE

1. Turbine trip caused by Generator Lockout from misaligned cam (equipment failure) on switchyard breaker.

9/26 0733 Power reduced to approximately 78% RTP to satisif load profile that will allow operation at 100% RTP through the summer 1491 peak load, i

9/30 2400 Unit ended month in MODE 1 operating at reduce power 'evel of approximately 78% RTP.

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Attachment to TXX-90545 Page 5 of 6

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKETNO:

50-445 UNIT:

CPSES 1 DATE:

October 5.1990 COMPLETED BY:

D. E. Buschbaum TELEPHOPE:

817-897-5851 REPORT MONTH SEPTEMBER 1990 hEiTetODOF TYPE SHUTTINGDOWN FR)RCED DURATION TIERENCR tQ DATE SSCHEDULED (HOURS)

REASCN REDUCING POWER CORRECTNEACTONSCOMNENTS 013 900907 F

30.4 A

2 Manual Scram after Feedwater Control valve failed open. See previous page.

014 900908 F

19.5 H

3 Automatic Scram on High Flux Rate caused by Ughtning Strike. See previous page.

015 900910 F

73.7 A

3 Automatic Scram on Turbine Trip. See previous page.

016 900915 F

22.1 A

2 Manual Scram due to loss of Feedwater. See previous page.

017 900916 F

0 B

4 Reduced Power Operation for 52.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> for Balance of Plant Grooming (controIS calibration, steam leak repair).

018 900922 F

0 A

4 Reduced power for 17.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> to investigate cause of heater drain system transient and correction of leaks caused during transient.

Attachment to TXX-90545 Page 6 of 6

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NETHODOF TYPE smN FFORCED DURATION TENACTOROR

(().

DSIE SSCEDULED (HOURS)

IEBS21 REDUCNG POWER CORRECTWEACTIOPGCOh5ENTS 019 900923 S

9.7 8

4 Turbine off line for 9.7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> for maintenance on Feedwater Control Valves.

020 900923 F

7.4 A

4 Turbine tripped due to switchyard breaker problem. See previous page.

021 900926 S

0 F

4 Operation at 78% Rx Power for 112.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> through end of month for fuel conservation and cycle extension past Summer 1991.

1)

REASON 2 ) METHOD A-EQUIPMENT FAILURE (EXPLAIN)

E. OPERATOR TRANNG AND UCENSE EXAMINATION 1: MANUAL B: MAJNTORTEST F: ADMINISTRATIVE 2: AWJUALSCRAM C: REFUEUNG G OPERATIONALERROR(EXPl.A!N) 3: AUTOMATICSCRAM D: REGULATORYRt:diHICTiON H-OTHER(EXPLAIN) 4: OTHER (EXPLAIN)

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