ML042030329

June 2004 Monthly Operating Report for LaSalle County Station, Units 1 and 2

ML042030329
Person / Time
Site:	LaSalle
Issue date:	07/15/2004
From:	Simpkin T Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML042030329 (3)

Text

ExelnSM Exelon Generation Company, LLC www.exeloncorp.com Nuclear LaSalle County Station 2601 North 21"'Road Marseilles, IL 61341-9757 July 15, 2004 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 for June 2004 Enclosed is the Exelon Generation Company (EGC), LLC, Monthly Operating Report for LaSalle County Station covering the period from June 1 through June 30, 2004. This report is submitted in accordance with Technical Specification 5.6.4.

Should you have any questions concerning this letter, please contact Mr. Terrence W. Simpkin at (815) 415-2800.

Respectfully, Terrence W. Simpkin Regulatory Assurance Manager LaSalle County Station Enclosure cc:

Regional Administrator - NRC Region IlIl NRC Senior Resident Inspector - LaSalle County Station

OPERATING DATA REPORT DOCKET NO.

UNIT NAME DATE COMPLETED BY TELEPHONE REPORTING PERIC 50-373 LaSalle I July 07, 2004 Stevie DuPont (815) 415-2197 June 2004

1.

Design Electrical Rating

2.

Maximum Dependable Capacity (MWe-Net) 1154.00 1,111.00

3.

Number of Hours the Reactor was Critical

4.

Number of Hours Generator On-line

5.

Reserve Shutdown Hours

6.

Net Electrical Energy Generated (MWHrs)

This Month 720.00 720.00 0.00 787,040.00 Yr-to-Date 3,672.05 3,642.50 0.00 4,068,475.00 Cumulative 128,048.02 125,775.85 1.00 127,350,669.0 UNIT SHUTDOWNS Type Method of F: Forced Duration Shutting Cause & Corrective Action No.

Date S: Scheduled (Hours)

Reason 1 Down 2 Comments

SUMMARY

The unit operated at or near full power throughout the month of June with the following exception: On June 19, 2004, power was reduced to about 600 MWe for scheduled rod pattern adjustment, control rod testing, and maintenance to repair several heater drain valve steam leaks. The testing and maintenance activities were completed and the unit was requested to operate at less than full power on June 20, 2004, to support grid conditions. On June 21, the unit was restricted from returning to full power due to a malfunctioning low-pressure heater normal drain valve and the "B" turbine driven reactor feedwater pump (TDRFP). The valve would not fully open and prevented the restoration of the heater drains to support the unit proceeding to full power. The "B" TDRFP failed to increase speed during pump startup. The heater drain valve controller was replaced and the demand signal to the TDRFP control valve was adjusted. The unit was returned to full power on June 23, 2004 and operated at or near full power for the remainder of the month.

I 2

Reason:

A Equipment Failure (Explain)

B Maintenance or Test C

Refueling D

Regulatory Restriction E

Operator Training & License Examination F

Administration G

Operational Error (Explain)

H Other (Explain)

Method:

1 Manual 2

Manual Trip/Scram 3

Automatic Trip/Scram 4

Continuation 5

Other (Explain)

UNIQUE REPORTING REQUIREMENTS FOR UNIT ONE

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

Page 1 of 2

OPERATING DATA REPORT DOCKET NO.

UNIT NAME DATE COMPLETED BY TELEPHONE REPORTING PERIO 50-374 LaSalle 2 July 07, 2004 Stevie DuPont (815) 415-2197 June 2004

1. Design Electrical Rating

2.

Maximum Dependable Capacity (MWe-Net) 1,154.00 1,111.00

3.

Number of Hours the Reactor was Critical

4.

Number of Hours Generator On-line

5.

Reserve Shutdown Hours

6.

Net Electrical Energy Generated (MWHrs)

This Month 720.00 700.47 0.00 756,236.00 Yr-to-Date 4,367.00 4,347.47 0.00 4,935,827.00 Cumulative 120,290.32 119,140.32 0.00 121,970,319.0 UNIT SHUTDOWNS Type Method of F: Forced Duration Shutting Cause & Corrective Action No.

Date S: Scheduled (Hours)

Reason i Down 2 Comments L2F39 06105/2004 F

19.53 B

5 Generator taken off line to repair OCB 2-3 Bus 3 disconnect. Reactor remained critical.

SUMMARY

The unit operated at or near full power throughout the month of June with the following exception: On June 4, 2004, power was reduced and the main generator was taken off-line to support scheduled maintenance of the switchyard electrical distribution OCB 2-3 Bus 3 disconnect. The maintenance activities were completed and the main generator was returned to the grid on June 6 and the unit was returned to full power on June 8, 2004 and operated at or near full power for the remainder of the month.

I 2

Reason:

A Equipment Failure (Explain)

B Maintenance or Test C

Refueling D

Regulatory Restriction E

Operator Training & License Examination F

Administration G

Operational Error (Explain)

H Other (Explain)

Method:

I Manual 2

Manual Trip/Scram 3

Automatic Trip/Scram 4

Continuation 5

Other (Explain)

UNIQUE REPORTING REQUIREMENTS FOR UNIT TWO

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

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