ML20073E488

Monthly Operating Repts for Aug 1994 for Comanche Peak Steam Electric Station Units 1 & 2

ML20073E488
Person / Time
Site:	Comanche Peak
Issue date:	08/31/1994
From:	Julie Hughes, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-94241, NUDOCS 9409290066
Download: ML20073E488 (9)

Text

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- Log # TXX-94241

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Ref. # 10CFR50.36 r z i TUELECTRIC September 15, 1994 C, tasu:e Terry ,

Gmp M President i

U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555  !

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SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION (CPSES) - UNITS 1 AND 2 i DOCKET NOS. 50-445 AND 50-446  !

MONTHLY OPERATING REPORT FOR AUGUST 1994 l

Gentlemen:  :

Attached is the Monthly Operating Report for August 1994 prepared and submitted pursuant to Technical Specification 6.9.1.5 contained in Appendix A to the Comanche Peak Steam Electric Station Units 1 and 2 i Operating License Nos. NPF-87 and NPF-89, respectively. l i

Sincerely, l

C. L. Terry f By:

i D. R. Woodlan l Docket Licensing Manager  !

JMK/jmk 7

t Attachment c - Mr. L. J. Callan, Region IV Ms. M. A. Miller, Region IV i Resident inspectors, CPSES (2) l Mr. T. A. Bergman, NRR ,

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Attachment to TXX-94241 Page 1 of 9 COMANCHE PEAK STEAM ELECTRIC STATION, UNIT 1 i NRC MONTHLY OPERATING REPORT DOCKET NO.: 50-445 UNIT: CPSES 1 DATE: 09/13/1994 COMPLETED BY: Janet Hughes ,

TELEPHONE: 817-897-5331 OPERATING STATUS

1. REPORTING PERIOD: AUGUST 1994 GROSS HOURS IN REPORTING PERIOD: 744

2. CURRENTLY AUTHORIZED POWER LEVEL (MWt): 3411 MAX. DEPEND. CAPACITY (MWe-Net): 1150

• DESIGN ELECTRICAL RATING (MWe-Net): 1150

3. POWER LEVEL TO WHICH RESTRICTED (IF ANY) (MWe-Net): NONE

4. REASON FOR RESTRICTION (IF ANY):

THIS MONTH YR TO DATE CUMULATIVE

5. NUMBER OF HOURS REACTOR WAS CRITICAL 744 5,784 28,323

6. REACTOR RESERVE SHUTDOWN HOURS 0 47 2,401

7. HOURS GENERATOR ON LINE 744 5,780 27,873

8. UNIT RESERVE SHUTDOWN HOURS 0 0 0

9. GROSS THERMAL ENERGY GENERATED (MWH) 2,506,709 19,482,216 89,232,021 l 10. GROSS ELECTRICAL ENERGY GENERATED (MWH) 829,392 6,513.660 29,648.917

11. NET ELECTRICAL ENERGY GENERATED (MWH) 795,611 6,254,050 28,249,901

12. REACTOR SERVICE FACTOR 100.0 99.2 79.8

13. REACTOR AVAILAr,'_ITY FACTOR 100.0 100.0 86.5 i 14. UNIT SERVICE FACTOR 100.0 99.1 78.5

15. UNIT AVAILABILITY FACTOR 100.0 99.1 78.5

16. UNIT CAPACITY FACTOR (USING MDC) 93.0 93.3 69.2

17. UNIT CAPACITY FACTOR (USING DESIGN MWe) 93.0 93.3 69.2 l

18. UNIT FORCED OUTAGE RATE 0.0 0.9 5.1

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

20. IF SHUTDOWN AT END OF REPORTING PERIOD, ESTIMATED DATE OF STARTUP:

21. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): ACHIEVED l

COMMERCIAL OPERATION 900813 I

ESTIMATED

Attachment to TXX 94241 Page 2 of 9 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.: 50-445 UNIT: CPSES 1  !

DATE: 09/13/1994 COMPLETED BY: Janet Hughes TELEPHONE: 817-897-5331 MONTH : AUGUST 1994 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 1085 17 1083 2 1084 18 1084 I

3 1084 19 1084 i

4 1085 20 1085 5 1083 21 1087 6 1083 22 779 i

7 1080 23 943 8 1083 24 1086 9 1083 25 1084 .

10 1083 26 1084 11 1083 27 1092 12 1083 28 1077 13 1082 29 1086 14 1083 30 1086 15 1082 31 1087 ,

j 16 1082

I Attachment to TXX-94241 Page 3 of 9  ;

i

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.: 50-445 UNIT: CPSES 1 DATE: 09/13/1994 ,

COMPLETED BY: Janet Hughes TELEPHONE: 817-897-5331 MONTH : AUGUST 1994 DAY TIME REMARK / MODE [

i 08/01 0000 Unit started month in MODE 1.

08/22 0952 A fitting was sheared on the pressurized side of isolation valve 1-PI-2111-72 resulting in oil leak causing a loss of oil pressure which in turn tripped MFP 1 A. The sheared fitting was removed and replaced and MFP 1 A was returned >

to service.

08/31 2400 Unit ended month in MODE 1.

l 1

Attachrnent to THX-94241 Page 4 of 9 ..

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.: 50-445 UNIT: CPSES 1 DATE: 09/13/1994 COMPLETED BY: Janet Hughes TELEPHONE: 817-897-5331 REPORT MONTH : AUGUST 1994 METHOD OF TYPE SHUTTING DOWN F: FORCED DURATION THE REACTOR OR NO DATE S: SCHEDULED (HOURS) REASON REDUCING POWER CORRECTIVE ACTIONS / COMMENTS 6 940822 F O.00 A 4 Sheared fitting on pressurized side of isolation valve 1-PI-2111-72. See previous page.

1) REASON 2) METHOD A: 8 OUIPMENT FAILURE (EXPLAIN) E: OPERATOR TRAINING AND LICENSE EXAMINATION 1: MANUAL B: MAINT OR TEST F: ADMINISTRATIVE 2: MANUAL SCRAM C: REFUELING G: OPERATIONAL ERROR (EXPLAIN) 3: AUTOMATIC SCRAM D: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4: OTHER (EXPLAIN)

Attachment to TXX-94241 Page 5 of 9 COMANCHE PEAK STEAM ELtiCTRIC STATION, UNIT 2 NRC MONTHLY OPERATING REPORT  !

DOCKET NO.: 50-446 l

UNIT: CPSES 2 DATE: 09/13/1994 COMPLETED BY: Janet Hughes TELEPHONE: 817 897-5331 OPERATING STATUS

1. REPORTING PERIOD: AUGUST 1994 GROSS HOURS IN REPORTING PERIOD: 744

2. CURRENTLY AUTHORIZED POWER LEVEL (MWt): 3411 MAX. DEPEND. CAPACITY (MWe-Net): 1150

• DESIGN ELECTRICAL RATING (MWe-Net): 1150

3. POWER LEVEL TO WHICH RESTRICTED (IF ANY) (MWe-Net): NONE

4. REASON FOR RESTRICTION (IF ANY):

THIS MONTH YR TO DATE CUMULATIVE

5. NUMBER OF HOURS REACTOR WAS CRITICAL 599 4,006 7,295 ,

6. REACTOR RESERVE SHUTDOWN HOURS 145 1.825 2,152

7. HOURS GENERATOR ON LINE 573 3,909 7,154

8. UNIT RESERVE SHUTDOWN HOURS 0 0 0

9. GROSS THERMAL ENERGY GENERATED (MWH) 1,728,622 11,163,665 21,781,622 l

10. GROSS ELECTRICAL ENERGY GENERATED (MWH) 573,540 3,709,970 7,297,197

11. NET ELECTRICAL ENERGY GENERATED (MWH) 539.381 3,496,549 6,928,355

12. REACTOR SERVICE FACTOR 80.6 68.7 77.2

13. REACTOR AVAILABILITY FACTOR 100.0 100.0 100.0

14. UNIT SERVICE FACTOR 77.0 67.0 75.7 l

15. UNIT AVAILABILITY FACTOR 77.0 67.0 75.7

16. UNIT CAPACITY FACTOR (USING MDC) 63.0 52.1 63.8

17. UNIT CAPACITY FACTOR (USING DESIGN MWe) 63.0 52.1 63.8

18. UNIT FORCED OUTAGE RATE 23.0 23.1 14.7

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

Refueling Outage scheduled to begin October 6,1994 with an estimated duration of 70 days.

20. IF SHUTDOWN AT END OF REPORTING PERIOD, ESTIMATED DATE OF STARTUP: i

21. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): ACHIEVED COMMERCIAL OPERATION 930803 ESTIMATED l

Attachment to TXX-94241 Page 6 of 9 l

, AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.: 50-446 )

)

UNIT: CPSES 2 DATE: 09/13/1994 COMPLETED BY: Janet Hughes TELEPHONE: 817-897-5331 MONTH : AUGUST 1994 DAY AVERAGE DAILY POWER LEVFL DAY AVERAGE DAILY POWER LEVEL (MWe-Nett (MWe-Net) 1 1097 17 0 2 1097 18 0 3 1094 19 0 4 1098 20 lb 5 1096 21 738 6 1094 22 1097 7 1091 23 1099 8 1100 24 1044 9 1097 25 450 10 1097 26 432 11 1094 27 65 12 1098 28 0 13 1095 29 0 ,

14 1097 30 1065 15 391 31 984 16 0  !

4 Attachment to TXX-94241 Page 7 of 9

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.: 50-446 l UNIT: CPSES 2 DATE: 09/13/1994 ,

COMPLETED BY: Janet Hughes TELEPHONE: 817-897-5331 MONTH : AUGUST 1994 DAY TIME REMARK / MODE 08/01 0000 Unit started month in MODE 1.

08/15 1045 Manually tnpped Reactor due to an oil leak to the C-Phase Bushing of Main Transformer 2MT2. Unit entered MODE 3. Oil was drained from the transformer and the leaking bushing was replaced. The transformer was filled with oil and satisfactorily tested.

08/20 0347 Unit entered MODE 2.

0421 Reactor is cntical.

1432 Unit entered MODE 1.

1445 Synchronized to the grid.

08/24 2117 Rise in Auxiliary Condenser level indicated possible tube rupture. The unit ,

was rapidly down powered to approximately 50% RTP to secure condenser and Main

, Feed Pump. Later determined to be caused by air in-leakage around conductivity cell interfering with condenser drains.

08/27 0816 Manually tripped Main Turbine in preparation for Unit shutdown due to Axial i Flux out of timds due to rapid down power late in core life (from auxiliary  ;

condenser problem). l l

0819 Unit entered MODE 2.

0838 Unit entered MODE 3.

1 08/28 1446 Unit entered MODE 2. l

)

1520 Reactor is critical.

1849 Unit entered MODE 1.

r Attachment to TXX 94241  !

Page 8 of 9

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH ,

DOCKET NO.: 50-446 UNIT: CPSES 2 DATE: 09/13/1994 o

COMPLETED BY: Janet Hughes TELEPHONE: 817-897-5331 MONTH : AUGUST 1994 DAY TIME REMARK / MODE 08/28 2000 Synchronized to the grid.

08/29 0015 Main Turbine tripped while transfernng Non 1E buses on startup. The Turbine trip was caused by a misadjusted cam switch on Main Generator Disconnect 8022.

Switch was readjusted.

0020 Unit entered MODE 2.

1100 Unit entered MODE 1.

1155 Syncnronized to the god.

08/31 1700 Troubleshooting revealed that Auxiliary Condenser level problem was due to the air in-leakage around the conductivity cell. It was isolated and auxiliary condenser water level returned to normal.

2400 Unit ended month in MODE 1.

i 1

l

Attachment to TMX-94241 -

Page 9 of 9 ,

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO.: 50-446 UNIT: CPSES 2 DATE: 09/13/1994 COMPLETED BY: Janet Hughes TELEPHONE: 817-897-5331 REPORT MONTH : AUGUST 1994 METHOD OF TYPE SHUTTING DOWN F: FORCED DURATION THE REACTOR OR NO DATE S: SCHEDULED (HOURS) REASON REDUCING POWER CORRECTIVE ACTIONS / COMMENTS 12 940815 F 124.00 A 2 Insulator oil leakage on 2MT2. Manual Reactor Trip from 75% RTP. See LER 446/94-012-00, 13 940824 F 0.00 A 4 Rise in Auxikary Condaser indicated possible tube rupture. See previous page.

14 940827 F 35.73 A 1 Unit shutdown due to Axial Flux out of limits due to rapid down power late in core hfe (from auxikary condenser problem).

15 940829 F 11.67 A 4 Turbine top whde transfernng Non 1E buses on startup. See previous page.

1) REASON 21 METHOD A: EQUIPMENT FAILURE (EXPLAIN) E: OPERATOR TRAINING AND LICENSE EXAMINATION 1: MANUAL B: MAINT OR TEST F: ADMINISTRATIVE 2: MANUAL SCRAM C: REFUELING G: OPERATIONAL ERROR (EXPLAIN) 3: AUTOMATIC SCRAM D: REGULATORY RESTRICTION H: OTHER (EXPLAIN) 4: OTHER (EXPLAIN)