ML033040271

September 2003 Monthly Operating Report for LaSalle County Station Units 1 and 2

ML033040271
Person / Time
Site:	LaSalle
Issue date:	10/15/2003
From:	Kaegi G Exelon Generation Co, Exelon Nuclear
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML033040271 (3)

Text

ExekInM Exelon Generation Company, LLC www.exeloncorp.com Nuclear LaSalle County Station 2601 North 21" Road Marseilles, IL 61341-9757 October 15, 2003 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-1 and NPF-1 8 NRC Docket Nos. 50-373 and 50-374

Subject:

Monthly Operating Report for September 2003 Enclosed is the Exelon Generation Company (EGC), LLC, Monthly Operating Report for LaSalle County Station covering the period from September 1 through September 30, 2003. This report is submitted in accordance with Technical Specification 5.6.4.

Should you have any questions concerning this letter, please contact Mr. Glen T. Kaegi, Regulatory Assurance Manager, at (815) 415-2800.

Respectfully, Glen T. Kaegi Regulatory Assurance Manager LaSalle County Station Enclosure cc: Regional Administrator - NRC Region lil NRC Senior Resident Inspector - LaSalle County Station

OPERATING DATA REPORT DOCKET NO. 50-373 UNIT NAME LaiSalle I DATE October 10, 2003 COMPLETED BY St wvie Du Pont TELEPHONE (8115) 415-2197 REPORTING PERIOD: September 2003

1. Design Electrical Rating 1 154.00

2. Maximum Dependable Capacity (MWe-Net) 1,111.00 This Month Yr-to-Date Cumulative

3. Number of Hours the Reactor was Critical 720.00 6,551.00 122,196.20

4. Number of Hours Generator On-line 720.00 6,551.00 119,967.90

5. Reserve Shutdown Hours 0.00 0.00 1.00

6. Net Electrical Energy Generated (MWHrs) 813,288.00 7,315,098.00 120,858,259.0 UNIT SHUTDOWNS Type Method of F: Forced Duration Shutting Cause & Corrective Action No. Date S: Scheduled (Hours) Reason 1 Down 2 Comments I 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual TriplScram C Refueling 3 Automatic Trip/Scram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

SUMMARY

LaSalle Unit 1 operated at full power for the month of September 2003, with the exception of the following: September 14 - Power was reduced to 1000 MWe to maintain condensate booster pump pressure due to isolation of the 14B feedwater heater. The level transient was caused by level perturbations resulting from the emergency drain valve cycling to compensate for the slow response of the normal drain valve. The normal drain valve was adjusted and the unit was returned to full power on September 16, 2003.

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. 500-374 UNIT NAME LiiSalle 2 DATE October 10, 2003 COMPLETED BY St evie Du Pont TELEPHONE (8 15) 415-2197 REPORTING PERIOD: September 2003

1. Design Electrical Rating 1 154.00

2. Maximum Dependable Capacity (MWe-Net) 1,111.00 This Month Yr-to-Date Cumulative

3. Number of Hours the Reactor was Critical 720.00 5,677.72 113,714.32

4. Number of Hours Generator On-line 681.38 5,554.45 112,583.85

5. Reserve Shutdown Hours 0.00 0.00 0.00

6. Net Electrical Energy Generated (MWHrs) 732,294.00 6,165,217.00 114,490,658.0 UNIT SHUTDOWNS Type Method of F: Forced Duration Shutting Cause & Corrective Action No. Date S: Scheduled (Hours) Reason 1 Down 2 Comments L2F38 09/13/2003 F 38.62 A 5 Generator was taken off-line to replace failed master trip solenoid. The reactor was not shutdown while the generator was off-line.

I 2 Reason: Method:

A Equipment Failure (Explain) I Manual B Maintenance or Test 2 Manual Trip/Scram C Refueling 3 Automatic Trip/Scram D Regulatory Restriction 4 Continuation E Operator Training & License Examination 5 Other (Explain)

F Administration G Operational Error (Explain)

H Other (Explain)

SUMMARY

LaSalle Unit 2 operated at full power for the month of September 2003, with the exception of the following: September 13 - Power was reduced and the main generator was taken off line to accomplish scheduled rod sequence exchange and address other unit material condition and maintenance issues. The activities included scram timing, repairs to two control rod hydraulic control units, replacement of the master trip solenoid valve, repairs to degraded switchyard equipment and testing the generator for hydrogen leakage. The main generator was returned to the grid on September 15 and the unit was returned to full power on September 18, 2003.

UNIQUE REPORTING REQUIREMENTS FOR UNIT TWO

1. Challenges other than routine surveillance testing to Safety/Relief Valve Operations - None Page 2 of 2