U-603665, March 2004 Monthly Operating Report Clinton Power Station

March 2004 Monthly Operating Report Clinton Power Station

ML041110921
Person / Time
Site:	Clinton
Issue date:	04/08/2004
From:	Lliff W AmerGen Energy Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
U-603665
Download: ML041110921 (2)

Text

AmerGen,-

An Exelon Company Clinton Power Station R. R. 3, Box 228 Clinton, IL 61727 10CFR50.36 U-603665 April 08, 2004 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Clinton Power Station Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

March 2004 Monthly Operating Report Please find in the Attachment the Monthly Operating Report for Clinton Power Station, Unit 1, for the period ending March 31, 2004.

Respectfully, W. S. Iliff Regulatory Assurance Manager Clinton Power Station PKR/bIf Attachment cc: Regional Administrator - NRC Region III NRC Senior Resident Inspector - Clinton Power Station Office of Nuclear Facility Safety - Illinois Emergency Management Agency

CLINTON POWER STATION ATTACHMENT TO U-603665 OPERATING DATA REPORT Page 1 of 1 Docket No: 50-461 Unit Name: Clinton 1 Date: April 07, 2004 Completed by: P. K. Ryan Telephone: (217) 937-2201 Reporting Period: March 2004

1. Design Electrical Rating: 1,062.00

2. Maximum Dependable Capacity (MWe-Net): 1,022.00 This Month Yr-to-Date Cumulative

3. Number of Hours the Reactor was Critical: 709.40 1,637.20 99,055.75

4. Number of Hours Generator On-line: 677.62 1,531.94 96,756.67

5. Reserve Shutdown Hours: 0.00 0.00 4.00

6. Net Electrical Energy Generated (MWHrs): 676,873.00 1,392,777.60 85,916,664.30 Unit Shutdowns Type Method of F: Forced Duration Shutting Cause & Corrective No. Date S: Scheduled (Hours) Reason (1) Down (2) Action Comments C1 F42 03/22/2004 F 66.38 A 3 A reactor scram occurred from 93%

power due to a turbine trip caused by a trip of the main generator overvoltage relay. Repairs were made to an isophase conductor found damaged during post-scram inspections. A root cause investigation is in progress. An LER is pending.

SUMMARY

Clinton had a forced outage (Cl F42) from March 22 - 25 due to an electrical fault in the main generator isophase bus.

(1) Reason: - (2) Method:

A Equipment Failure (Explain) 1 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 Administrative G Operational Error (Explain)

H Other (Explain)

Challenges Main Steam Safety/Relief Valves: None