ML20209H150

Monthly Operating Repts for June 1999 for LaSalle County Station,Units 1 & 2.With

ML20209H150
Person / Time
Site:	LaSalle
Issue date:	06/30/1999
From:	Shaun Anderson, Jamie Benjamin COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9907200145
Download: ML20209H150 (8)

Text

.,,, Commonw cattli I:dison Company

'l.ahalle Generating Nation 2 Nil Nortti list Ro.ed

. M.y w illes, 11. 61.441 A> 57 Tei ,isas c i July 15,1999 United States Nuclear Regulatory Commission Attention: Document Control Desk Washington,' D.C. 20555 LaSalle County Station, Units 1 and 2 Facility Operating License Nos. NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374

Subject:

Monthly Operating Report Enclosed is the LaSalle County Station Monthly Operating Report covering the period from June 1,1999 through June 30,1999. This report is submitted in accordance with Technical Specification 6.6.A.5.

Should you have any questions conceming this letter, please contact Mr. Frank A. Spangenberg Ill, Regulatory Assurance Manager, at (815) 357-6761, extension 2383.

Respectfully,

/d gy..A. ,4 Jeffrey A. Benjamin Site Vice President LaSalle County Station Enclosure cc: Regional Administrator - NRC Region Ill NRC Senior Resident inspector - LaSalle County Station g hh I 9907200145 990630 PDR ADOCK 05000373 R PDR A t'nicom compam

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LASALLE COUNTY STATION UNIT 1 AND UNIT 2 MONTHLY PERFORMANCE REPORT I

COMMONWEALTH EDISON COMPANY NRC DOCKET NO. 50-373 NRC DOCKET NO. 50-374 LICENSE NO. NPF-11 LICENSE NO. NPF-18  !

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TABLE OF CONTENTS

1. Monthly Report for LaSalle Unit One A. Operating Data Summary B. Unit Shutdowns and Operating Summary C. Unique Reporting Requirements

11. Monthly Report for LaSalle Uriit Two A. Operating Data Summary B. Unit Shutdowns and Operating Summary C. Unique Reporting Requirements l

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1. Monthly Report for LaSalle County Station Unit One--June,1999 A. OPERATING DATA

SUMMARY

FOR UNIT ONE DOCKET NO.: 50-373 UNIT: LaSalle One DATE: July 6,1999 COMPLETED BY: S. Anderson TELEPHONE: (815) 357-6761 x2620 l

1. Reporting Period: June,1999 Gross Hours: 720

2. Currently Authorized Power Level: 3,323 (MWt)

Design Electrical Rating: 1,078 (MWe-net)

Max Dependable Capacity: 1,036 (MWe-net)

3. Power Level To Which Restricted (if Any): None

4. Reasons For Restriction (If Any): N/A  ;

THIS MONTH YEAR-TO-DATE CUNIULATIVE

5. Reactor Critical Hours 720 4,343 86,466.9

6. Reactor Reserve 0.0 0.0 1,641.2 Shutdown Hours ,

7. Hours Generator On- 720 4,343 84,356.6 j Line j

8. Unit Reserve 0.0 0.0 1.0 Shutdown Hours 9, Gross Thermal 1,983,926 13,788,570 252,467,920 Energy (MWHt)

10. Gross Electric Energy 642,829 4,665,980 84,528,231 (MWHe) l

11. Net Electrical Energy 620,260 4,537,510 81,543,636 ,

(MWHe)  !

12. Reactor Service 100.0 100.0 63.6 Factor (%)

13.- Reactor Availability 100.0 100.0 64.9  ;

Factor (%) '

14. Unit Service Factor 100.0 100.0 C2.1

(%)

15. Unit Availability . 100.0 100.0 62.1 l Factor i

16. Unit Capacity Factor 83.2 100.8 57.9 (MDC)

17. Unit Capacity Factor 79.9 96.9 55.7 (design MWe)

18. Unit Forced Outage 0.0 0.0 13.6 Factor (%)

19. Shutdowns Scheduled Over Next 6 Months: L1R08 - October 23,1999 20.. If Shutdown at End of Report Period, Date of Startup: N/A

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. l B. UNIT SHUTDOWNS AND OPERATING

SUMMARY

' REPORT MONTH JUNE 1999 NO DATE' TYPE (1) DURATION REASON METHOD OF CORRECTIVE ACTIONS / I (HOURS)* (2). SHUTTING COMMENTS DOWN REACTOR (3)

None l

. Ycar-to-date forced outage hours = 0.0 ' +

~ Cumulative forced outage hours = 13,227.8 - ~'

TABLE KEY:

(1) .(3)

F: Forced Method:

S: Scheduled .1. Manual

2. Manual Scram (2) 3. Automatic Scram Reason: .

4. Continuation ,

A Equipment Failure (Explain) 5. Other (Explain) l B Maintenance or Test l C Refueling ' i

, D Regulatory Restriction E Operator / Licensing Exam F Administrative G Operational Error (Explain)  :

H Other (Explain) j

SUMMARY

LaSalle Unit 1 operated at less than full power for much of the month of June due to ongoing problems with l zIbra mussels fouling the circulating water piping and main condenser. The load drops taken to support condenser cleaning and flushing were as follows:

o. June 3,1999 0130 - The " Ice Melt" line was in service to raise inlet temperature. Reactor power was adjusted to maintain condenser backpressure below the administrative limit of 5". This load drop, j including ramp back to full power lasted for approximately 15 hours1.736111e-4 days <br />0.00417 hours <br />2.480159e-5 weeks <br />5.7075e-6 months <br />. '

.o . ' June 4,1999 2100 - Load drop taken to support condenser waterbox cleaning and zebra mussel

~ removal. .This' evolution lasted approximately 2 days and 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br />. The ramp back to full power lasted

. approximately 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br />. Once full power was achieved, core Xenon continued to build-in, and reactor

! power began to coast down. A load drop was then initiated at 0100 on June 9 for a control rod pattern adjustment. This load drop, including the ramp back to full power, lasted approximately 11 hours1.273148e-4 days <br />0.00306 hours <br />1.818783e-5 weeks <br />4.1855e-6 months <br />. A second control rod pattern adjustment was required on June 10 at 0200. This load drop and ramp back to full power lasted approximately 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br />. The unit was returned to full power at approximately 1200 on June 10.

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SUMMARY

(Continued) e June 12,1999 2300 - A load drop was taken to support condenser waterbox cleaning and zebra mussel removal. This evolution lasted approximately 19 hours2.199074e-4 days <br />0.00528 hours <br />3.141534e-5 weeks <br />7.2295e-6 months <br />. The ramp back to full power lasted approximately 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br />. Once full power was achieved, core Xenon continued to build-in, and reactor power began to coast down. A load drop was then initiated at 0500 on June 15 for a control rod pattern adjustment. This load drop, including the ramp back to full power, lasted approximately 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br />. The  ;

unit was returned to full power at approximately 1500 on June 15.

o June 17,1999 2000 - A load drop was taken to support condenser waterbox cleaning and zebra mussel removal. This evolution lasted approximately 3 days. The ramp back to full power lasted approximately 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br />. Once full power was achieved, core Xenon continued to build-in, and reactor j

power began to coast down. A load drop was then initiated at 2100 on June 21 for a control rod pattern 4 adjustment. This load drop, including the ramp back to full power, lasted approximately 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br />. The unit was returned to full power at approximately 1720 on June 22.

o June 25,19991630 -Increasing inlet temperature and condenser fouling resulted in abnormally high condenser hotwell temperature. In order to maintain condensate temperature below administrative limits associated with condensate polisher resins, reactor power was reduced 150 MW. A further reduction in reactor power was required at 1900 on June 25, when reactor power was reduced another 150 MW for a total reduction of 300 MW. The unit continued to operate at reduced power until approximately 0210 on June 26.

o June 26,1999 0210 - A load drop was taken to perform weekly control rod exercising. Control rod exercising was completed in approximately 30 minutes.

o June 26,1999 0240 - A load drop was taken to support condenser waterbox flushing. This evolution lasted approximately 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />. The ramp back to full power began at approximately 0745 on June 26.

The power ramp co; 2nued until approximately 1900 on June 26, when at 85% power, it was determined that further condenser cleaning was required.

o June 26,19991900 - A load drop was taken to support condenser waterbox cleaning and zebra mussel removal. This evolution lasted approximately 28 hours3.240741e-4 days <br />0.00778 hours <br />4.62963e-5 weeks <br />1.0654e-5 months <br />. The ramp back to full power began at approximately 2300 on June 27. The power ramp continued until approximately 1030 on June 28, when at 89% power, the ramp was terminated due to concerns with high condensate temperature and condenser waterbox differential pressure. At approximately 1300 on June 28, it was determined that further condenser cleaning was required.

o June 28,19991300 - A load drop was taken to support condenser waterbox cleaning and flushing and zebra mussel removal. This unit continued to operate at reduced power for the remaining 2 days and 9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> in June.

C. UNIQUE REPORTING REQUIREMENTS FOR UNIT ONE

1. Challenges other than routine surveillance testing to Safety / Relief Valve Operations--None

2. Major Changes to Radioactive Waste Treatment System-None

3. Off-Site Dose Calculation Manual Changes-None

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11. Monthly Report for LaSalle County Station Unit Two--June,1999 A. OPERATING DATA

SUMMARY

FOR UNIT TWO DOCKET NO.: - 50-374

- UNIT: LaSalle Two DATE: July 6,1999 COMPLETED BY: S. Anderson TELEPHONE: (815) 357-6761 x2620

1. Reporting Period: June,1999 Gross Hours: 720 2.~ Currently Authorized Power Level: 3,323 (MWt)

Design Electrical Rating 1,078 (MWe-rset)

Max Dependable Capacity: 1,036 (MWe-net)

3. Power Level To Which Restricted (if Any): None

4. Reasons For Reetriction (if Any): N/A-THIS MONTH YEAR-TO-DATE CUMULATIVE

5. Reactor Critical Hours 720 1,974.8 79,003.2

6. Reactor Reserve 0.0 0.0 1,716.9 Shutdown Hours

7. Hours Generator On- 720 1,932.6 77,902.8 Line

8. Unit Reserve 0.0 0.0 0.0 Shutdown Hours

9. Gross Thermal 2,389,480 6,057,796 236,580,483 Energy (MWHt)

10. Gross Electric Energy 812,254 2,057,588 79,233,512 (MWHe) ,

11. Net Electrical Energy 783,937 1,984,470- 75,958,113 (MWHe) '

12. Reactor Service 100.0 45.5 61.3 Factor (%)

13. Reactor Availability 100.0 45.5 62.6 Factor (%)

14. Unit Service Factor 100.0 44.5 60.6

(%)

15. Unit Availability 100.0 44.5 60.5 Factor ,_

16. Unit Capacity Factor 105.1 44.1 56.9 (MDC)

.17. Unit Capacity Factor 101.0 42.4 54.7 (design MWe) 18, Unit Forced Outage 0.0 55.5 19.4 Factor (%)

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19. Shutdowns Scheduled Over Next 6 Months: None

20. If Shutdown at End of Report Period, Date of Startup: N/A j

.:. 'I B. UNIT SHUTDOWNS AND OPERATING

SUMMARY

REPORT MONTH JUNE 1999 NO DATE TYPE (1) DURATION REASON METHOD OF CORRECTIVE ACTIONS /

(HOURS)* (2)- SHUTTING COMMENTS DOWN REACTOR (3)

None Ygar-to-date forced outage hours = 2,411.2

' Cumulative forced outage hours = 18,803.5 TABLE KEY:

(1)- (3)

F: Forced Method:

S: Scheduled 1. Manual

2. Manual Scram (2) 3. Automatic Scram Reason: 4. Continuation A Equipment Failure (Explain) 5. Other (Explain)

' B Maintenance or Test C Refueling D Regulatory Restriction E Operator / Licensing Exam F Administrative G Operational Error (Explain)

H Other (Explain)

SUMMARY

LeSalle Unit 2 operated at full power throughout the month'of June with the exception of one short downpower ets f:llows:

o June 5,1999 0330 - A load drop was taken to support scheduled surveillance testing. Load drop lasted for approximately 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and 15 minutes.

C. UNIQUE REPORTING REQUIREMENTS FOR UNIT TWO

- 1. Challenges other than routine surveillance testing to Safety / Relief Valve Operations-None

.2. Major Changes to Radioactive Waste Treatment Systems-None L

3. Off-Site Dose Calculation Manual Changes-None 1