05000458/LER-2005-003

11-04-2005

On September 9, 2005, with the plant operating at 100 percent power, the results of an ongoing investigation concluded that the Division 1 emergency diesel generator had been inoperable for approximately 23 days during July 2005. This was due to a cracked tube in the engine jacket water cooling system that may have prevented the generator from fulfilling its safety function. River Bend Technical Specifications allow a maximum outage time of 14 days for the emergency diesel generator. This condition is being reported in accordance with 10CFR50.73(a)(2)(i)(b) as operations prohibited by Technical Specifications. The tubing was replaced on July 31, 2005, thus the condition no longer existed at the time of discovery.

LER-2005-003, Operation Prohibited by Technical Specifications Due to Diesel Generator Malfunction
River Bend Station
Event date:	09-09-2005
Report date:	11-04-2005
Reporting criterion:	10 CFR 50.73(a)(2)(i)(b)
4582005003R00 - NRC Website
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Licensee Event Report

River Bend Station

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		Reporting criterion
05000458/LER-2005-003	Operation Prohibited by Technical Specifications Due to Diesel Generator Malfunction	10 CFR 50.73(a)(2)(i)(b)

05000458/LER-2005-003

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