ML20210R067

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Monthly Operating Repts for July 1999 for LaSalle County Station,Units 1 & 2.With
ML20210R067
Person / Time
Site: LaSalle  Constellation icon.png
Issue date: 07/31/1999
From: Shaun Anderson, Jamie Benjamin
COMMONWEALTH EDISON CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9908170021
Download: ML20210R067 (8)
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Commonw c.sh h litnon Comjun) l isalle Generating Mation 2601 Nonh 214 Road Marwilles. II. 61.4 a 1 -9"V' Tel 814.45'# 61 August 13,1999 United States Nuclear Regulatory Commission Attention: Document Control Desk l 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 July 1,1999 through July 31,1999. 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, a; (815) 357-6761, extension 2383.

Respectfully, O Jeffrey A. Benjamin o -

Site Vice President LaSalle County Station  ;

Enclosure cc: Regional Administrator - NRC Region lil NRC Senior Resident inspector - LaSalle County Station

, j b ,I 9908170021 990731 PDR ADOCK 05000373 R PDR l

i A l'nicom Com{un)

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LASALLE COUNTY STATION UNIT 1 AND UNIT 2 i

MONTHLY PERFORMANCE REPORT COMMONWEALTH EDISON COMPANY NRC DOCKET NO. 50-373 NRC DOCKET NO. 50-374 LICENSE NO. NPF-11 LICENSE NO. NPF-18 f

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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 Unit Two A. Operating Data Summary B. Unit Shutdowns and Operating Summary C. Unique Reporting Requirements t

I- li Monthly Report for LaSalle County Statien Unit One--July,1999 A. OPERATING DATA

SUMMARY

FOR UNIT ONE DOCKET NO.: 50-373 UNIT: LaSalle One DATE: August 3,1999 COMPLETED BY: S. Anderson TELEPHONE: (815) 357-6761 x2620

1. Reporting Period: July,1999 Gross Hours: 744
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 CUMULATIVE
5. Reactor Critical Hours 744 5,087 87,210.9
6. Reactor Reserve 0.0 0.0 1.641.2 Shutdown Hours
7. Hours Generator On- 744 5,087 85,100.6 Une
8. Unit Reserve 0.0 0.0 1.0 Shutdown Hours
9. Gross Thermal 2,182,096 15,970,666 254,650,016 Energy (MWHt)
10. Gross EkH::tric Energy 707,958 5,373,938 85,236,189 (MWHe)
11. Not Electrical Energy 683,342 5,220,852 82,226,978 (MWHe)
12. Reactor Service 100.0 100.0 63.8 Factor (%) _
13. Reactor Availability 100.0 100.0 65.0 Factor (%)
14. Unit Service Factor 100.0 100.0 62.3

(%)

15. Unit Availability 100.0 100.0 62.3 Factor
16. Unit Capacity Factor 88.7 99.1 58.1 (MDC)
17. Unit Capacity Factor 85.2 95.2 55.8 (decian MWe)
18. Unit Forced Outage 0.0 0.0 13.5 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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B. UNIT SHUTDOWNS AND OPERATING

SUMMARY

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

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

None Ye r-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 4 A Equipment Failure (Explain) 5. Other (Explain)

B Maintenance or Test C Refueling D Regulatory Restriction i j

E Operator / Licendng Exam F Administrative {

G Operational Error (Explain)

H Other (Explain)

SUMMARY

LaSalle Unit 1 operated at less than full power for much of the month of July due to ongoing problems with t

zebra mussels fouling the circulating water piping and main condenser. The load drops taken to support l condenser cleaning and flushing were as follows:

o July 1,1999 0000 - Unit 1 began the month of July at reduced power to support condenser waterbox cleaning and flushing and zebra mussel removal. The condenser cleaning evolution concluded at approximately 0540 on July 1,1999. The ramp back to full power lasted approximately 18.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />, with the unit returning to full power at 0143 on July 2,1999.

! o= July 2,1999 2000 - A load drop was taken to support control rod exercising and a control rod pattern adjustment. These evolutions were completed in 2.5 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 lasted j l approximately 17.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />. The unit was returned to full power at approximately 1608 on July 3. 1

! I o July 4,19991846 - A load drop was taken to support condenser waterbox flushing. This evolution lasted approximately 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and 15 minutes. The ramp back to full power lasted approximately 10 '

l hours. The unit was retumed to full power at 0900 on July 5.

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SUMMARY

(Continued) o July 7,19991636 - A load drop was taken due to concems with condensate temperature and condenser backpressure. In order to maintain condensate temperature below administrative limits associated with condensate polisher resins, reactor power was reduced roughly 150 MWt. The unit remained at reduced power for the next 4.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> o

July 7,1999 2058 - A load drop was taken to support condenser waterbox flushing. This evolution lasted approximately 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />. The ramp back to full power lasted approximately 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. The unit was retumed to full power at 1315 on July 8.

o July 8,'1999 2100 - 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 lasted approximately 11 hours1.273148e-4 days <br />0.00306 hours <br />1.818783e-5 weeks <br />4.1855e-6 months <br />. The unit was retumed to full power at 1315 on July 9.

o . July 9,1999 2315 - A load drop was taken to support condenser watett>ox cleaning and zebra mussel removal. This evolution lasted slightly less than 4 days.. The ramp back to full power began at approximately 1935 on July 13, and completed at 1618 on July 14. As core Xenon continued to build-in, reactor power began to decrease. A load drop was then initiated at 1900 for a control rod pattem adjustment. This load drop, including the ramp back to full power, lasted approximately 17.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.

The unit was retumed to full power at approximately 1230 on July 15.

o July 15,1999 2300 - A load drop was taken to support a control rod pattem adjustment. This load drop, including the subsequent ramp back to full power lasted approximately 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />, with the unit returning to full power at 0353 on July 16.

o - July 18,19991300 - A load drop was taken to support weekly exercising of the control rods in the vicinity of the leaking fuel assembly and scheduled surveillance testing. This evolution, including the ramp back to full power, lasted roughly 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />, with the unit retuming to full power at 0853 on July 19.

o> July 23,19991129 - A load drop was taken due to concems with condensate temperature and I condenser backpressure. In order to maintain condensate temperature below administrative limits  !

associated with condensate polisher resins, reactor power was reduced roughly 90 MWt. The unit  !

remained at reduced power for the next 11.5 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 lasted approximately l 1.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.

. o _ July 24,19991915 - A load drop was taken due to concems with condensate temperature and condenser backpressure. In order to maintain condensate temperature below administrative limits associated with condensate polisher resins, reactor power was reduced roughly 60 MWt. The unit remained at reduced power for slightly less than 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />. l

-o July 24,1999 2153 - A load drop was taken to support weekly control rod exercising and a control rod pattom adjustment. This load drop, including the ramp back to full power, lasted approximately 14.5 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 was then terminated at 1220 on July 25, due to concems with condensate temperature. In order to maintain condensate temperature below administrative limits associated with condensate polisher resins the unit was then operated at less than 100% power for the '

remainder of the month of July. As inlet temperature varied between 91 and near 97 degrees, the unit was operated between 83 and 95 percent power.

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

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111 Monthly Report for LaSalle County Station Unit Two-July,1999

. A. OPERATING DATA

SUMMARY

FOR UNIT TWO DOCKET NO.:- 50-374-UNIT: LaSalle Two DATE: . August 3,1999..

COMPLETED BY: . S. Anderson -

TELEPHONE:. (815) 357-6,761 x2620

1. Reporting Period: July,1999' Gross Hours: 744 e 2. Currently Authorized Power Level: 3,323 (MWt)

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

Max Dependable Capacity: 1,036 (MWe-not)
3. Power Level To Which Restricted (if Any): None E4.' Reasons For Restriction (if Any): N/A THIS MONTH YEAR-TO-DATE I CUMULATIVE
5. Reactor Cntical Hours 744 2,718.8 79,747.2
6. Reactor Reserve 0.0 0.0 1,716.9 Shutdown Hours
7. Hours Generator on- 744 2,676.6 78,646.8 Une 8, Unit Reserve 0.0 0.0 0.0 Shutdown Hours
9. Gross Thwmai 2,470,670 8,528,466 239,051,153 Energy (MWHt)
10. Gross Electric Energy 831,668 2,889,256- 80,065,180-(MWHe) 11." Not Electrical Energy 802,411- 2,786,881 76,760,524 (MWHe)

Ti,; Reactor Service 100.0 53.4 61.5 Factor (%) >

33. Reactor Avadatety 100.0 53.4 62.9 i Factor (%)
14. Unit Service Factor 100.0 52.6 60.7 l

(%) i

15. Unit Availability 100.0 52.6 60.7 Factor
16. Unit Capacity Factor 104.1 52.9 57.2 (MDC)  !
17. . Unit Capacity Factor 100.0 50.8 54.9-(desian MWe) -
18. Unit Forced Outage 0.0 47.4 19.3 Factor (%)

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19.' 5%:tdowns Scheduled Over Next 6 Months: Ncce -

f 20. .lf Shutdown at End of Report Period, Date of Startup: N/A l

I B. UNIT SHUTDOWNS AND OPERATING

SUMMARY

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

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

None Year-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

LaSalie Unit 2 operated at full power throughout the month of July with the exception of one short downpower cs follows:

o July 3,1999 0430 - A load drop was taken to support scheduled surveillance testing. This load drop lasted for approximately 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 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
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