ML20073D254

Monthly Operating Rept for Mar 1991 for Comanche Peak Steam Electric Station Unit 1

ML20073D254
Person / Time
Site:	Comanche Peak
Issue date:	03/31/1991
From:	William Cahill, Thatcher G, Walker R TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TXX-91150, NUDOCS 9104260245
Download: ML20073D254 (4)

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" Log # TXX 91150 4

File # 10010.2 3

3 Ref.

1. 10CFR50,36 1UELECTRIC-Ap ri l.12, 1991 :

William J. Cabal. Jr.

Luccutive Vke hnidem I

Director, Office of Resource Management

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U. S. Nuclear Regulatory Commission Washington, DC 20555

SUBJECT:

COMANCHE PEAK STEAM: ELECTRIC. STATION-:(CPSES)-UNIT 1 DOCKET NO.-50 445 HONTHLY OPERATING REPORT FOR'HARCH 1991.

-Gentlemen:

Attached is the Monthly Operating Report for-March 1991 prepared and submitted-pursuant to Specification.6.9.1.5 of Appendix A (Technical 1 Specifications) to-

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the Comanche Peak Unit 1 Steam Electric Station Operating. License, NPF-87..

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-Sincerely, xW1111am,J. Cahill,EJri Byi CN)[

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,RogerID. Walker-Hanager of< Nuclear-Licensing-~

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c - Mr'. R. D. Hartin,- Region IV' Resident Inspectors, CPSES-(3)i Hr,LJ..W. Clifford.-NRR

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Attachment to TXX.91150 l

1, Page 1 of 4 COMANCHE PEAK STEAM ELECTFilC STATION,~ UNIT 1 NRC MONTHLY OPERATING REPORT DOCKETNO:

50-445 UNIT:

CPSES 1 DATE:

Acril 8.1991 COMPLETED BY:

G.W. Thatcher

. TELEPHONE:

817 897-8223-OPERATING STATUS 1.

Reporting Period: MARCH 1991 Gross hours in reporting period: 214 2.

Currently authorized power level (MWt): liL1. Max _ depend. capacity (MWe Net): 11.5r Design Electrical Rating (MWe. Net): 115D 3.

Power level to.which restricted (if any) (MWe Net): None 4.

Reasons for restriction (if any):

THIS MONTH-YRTO DATE CUMULATIVE 5.

Number of hours reactor was critical 445.3 1908.2 L

-4734.6 6.

Reactor reserve shutdown hours 298.7 351.8 624.7-7.

Hours generator on line 437.2 1787.7-4653.4 8.

Unit reserve shutdown hours 0

0

~0-9.

Gross thermal energy generated (MWH) 1,375,315

'5,689,547 13,846,475 10'.

Gross electrical energy generated (MWH) 459,846 1,907,386-4,572,38ts

11. Net electrical energy generated-(MWH) 434,571

< 1,823,178 4,336,692-

12. Reactor Service factor 59.9 83,7 85.5-

13. Reactor availability factor.

100 100:

96.8

14. Unit service factor 58.8 82.8 84.0

- 15. Unit availability factor 58.8

.82.8 84'0

16. -Unit capacity factor (Using MDC) 50.8 73.4 68.1

17. Unit capacity factor (Using Design MWe) 50.8 73.4 68.1

18. Unit forced outage rato 14.4-7.2 17.6

19. Shutdowns scheduled over next 6 months (Type, Date, and Duration of each): a) Maintenance /

. Surveillance, 910322; 6 weeks.

20. If shutdown at end of report period, estimated date of 'startup: 910504

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

ACHIEVED Commercial Operation 900813 Estimated

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g 4, Attachment to TXX 91150 Page 2 of 4 AVERAGE DAILY UNIT POWER LEVEL-DOCKETNO:

60-445 UNIT:-

CPSES 1-DATE:

Aotil 8.1991 COMPLETED BY:

G.W. Thatcher TELEPHONE:

817 897 8223 MONTH: MARCH 1991 DAY AVERAGE DAILY POWER LEVEL CAY

- AVERAGE DAILY POWER LEVEL (MWe Net)

(MWe Net)u 1

1044 17 492-2 950 18 76 ~

3 1050 19 722 4

1050 20 162 4

5 1059 21 0

6 1065 22 0

i 7

1065 23 0-8 1062 24-0-

9 1062 25 0

l 10 1063 26 11 1065 27 -

0 12 1066 28 0

-13 1065

. 29

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14 1062

= 30 0

l 15 1055 31 0

l 16 1017 i

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i.;_ Attachment to TXX 91150 Page 3 of 4

SUMMARY

OF OPERATING EXPERIENCE FOR THE MONTH -

DOCKETNO:

50-445 UNIT:

CPSES 1 DATE:.

Antil 8.1991 COMPLETED BY:

G.W. Thatcher h

TELEPHONE:

817-897-8223 MONTH: MARCH 1991 3/1-0000 Unit started month in MODE 1.

3/17 1131 Reactor Trip, Unit entered MODE 3.

Reactor trip caused by operator error during surveillance testing.. LER 91 007 to follow.

3/18 0541 Unit entered MODE 2.

0735 Unit entered MODE 1.

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3/20 0140 Steam generator chemistry at action level 3 due to high sodium, caused by tube failure in the main condenser. Began power reduction / shutdown to correct problem.

0653 Unit entered MODE 2.-

0728 Unit entered MODE 3.

l 1948 Unit entered MODE 4.

2310 Unit entered MODE 5.

3/28 2253 Loss of preferred power to safeguards bus' caused an auto start of train "A" l

diesel generator. (Parker breaker tripped) :LER 91012 to follow.

l 3/29 0020 Loss of preferred power to safeguards bus caused an auto start of. train."A" diesel generator. (Parker breaker tripped again) LER 91012 to follow.

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3/31 2400 Unit ended month in MODE 5.

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' Attachm::nt to TXX-91150

' Page 4 of 4 '

UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKETNO-50-445 UNIT:

CPSES1

'~

DATE:

__ Aori! 8.1991 COMPLETED BY:

G.W. Thatcher TELEPHONE:

817-897-8223 REPORT MONTH MARCH 1991 I-NETHODOF TYPE SHUTTINGDOWN Ff0RCED DURATION TI-EREACTOROR M

DATE SSCHEDUl FO (HOURS)

REASDN REDUCING POWER CORHEciiVE ACTIOFSCOMMENTS l

f-003 910317 F

,25.7

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Reactor Trip caused by personnel error.. See previous page. LER 91-OC7 to follow.

004 910320

'F 48.1 A

1 S.G. chernistry at action level 3 caused by condenser tube shear.'

005 910322 S

233 B/F 1

Planned outage.

I-i I-1)

FEASCN 2 ) METHOD

- A : EQUIPMENT FAILURE (EXPLAIN)

E.. OPERATORTRAINING ANDUCENSEEXAMINATION 1: MANUAL B: MAINTORTEST F: ADMINISTRATIVE 2: MANUALSCRAM

' C: 'REFUEUNG G OPERATIONALERROR(EXPLAIN) 3: AUTOMATICSCRAM D: REGULATORYRESTRICTION H:. OTHER (EXPLAIN) 4: OTHER (EXPLAIN) l

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