April 24, 2009

 Braidwood Unit 2 Automatically Shuts Down 

 Braidwood Generating Station Unit 2 automatically shut down at 11:41 a.m. today. The plant responded as expected, safely and without incident. 

 

BRACEVILLE, Ill. (April 24, 2009) - Braidwood Generating Station Unit 2 automatically shut down at 11:41 a.m. today. The plant responded as expected, safely and without incident.

Although the cause is still being reviewed, initial indications point to a faulty circuit in a temperature monitoring system.

The Braidwood Unit 2 shutdown will not have an impact on electrical service to Exelon customers. Braidwood Unit 1 continues to operate at full power.

Braidwood Generating Station is approximately 60 miles southwest of Chicago. With both units running at full power, Braidwood generates enough electricity to power more than 2 million average American homes.

Planned Maintenance Performed On Dresden Unit 3
Maintenance will help ensure continued safe, reliable operation
 
MORRIS, Ill. (April 24, 2009) - Operators at Dresden Generating Station took Unit 3 offline at 1 a.m. to replace a valve inside the unit’s primary containment structure, or drywell. The valve replacement is a proactive step that will help ensure the continued safe and reliable operation of the unit.

The work, which cannot be performed while the unit is operating, is being done to address slight degradation of the valve that the station has been monitoring.

The removal of Dresden Unit 3 from service will not affect the supply of electricity to those living in the area. Unit 2 will continue to operate during the station’s planned maintenance outage.

Dresden Generating Station is approximately 60 miles southwest of Chicago. The station’s two operating units can produce more than 1,700 megawatts net of electricity per hour. Dresden Unit 1, which began commercial operation in 1960 and was retired in 1978, has been designated a Nuclear Historic Landmark by the American Nuclear Society.

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 Exelon Corporation is one of the nation’s largest electric utilities. The company has one of the industry’s largest portfolios of electricity generation capacity, with a nationwide reach and strong positions in the Midwest and Mid-Atlantic. Exelon distributes electricity to approximately 5.4 million customers in northern Illinois and southeastern Pennsylvania and natural gas to approximately 485,000 customers in the Philadelphia area. Exelon is headquartered in Chicago and trades on the NYSE under the ticker EXC.

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