February 28, 2012
Byron Station Declares Unusual Event, Both Units Operating
Operators at Byron Generating Station declared an Unusual Event for Unit 1 at 5:31 p.m. CT, when power coming in from outside of the nuclear facility was interrupted. Both units are operating at 100 percent power, and the facility is in a safe condition.
BYRON, Ill. – Operators at Byron Generating Station declared an Unusual Event for Unit 1 at 5:31 p.m. CT, when power coming in from outside of the nuclear facility was interrupted. Both units are operating at 100 percent power, and the facility is in a safe condition.
The facility responded as designed with one of the station’s many redundant power sources providing electricity for Unit 1.
The Nuclear Regulatory Commission (NRC), the federal oversight organization, requires a nuclear facility to designate an Unusual Event in events such as this.
A failed insulator in the station’s switchyard is believed to be the cause for the loss of power. Technical crews will be in the switchyard this evening and Wednesday to replace the insulator.
Exelon Nuclear has notified all appropriate local, state and federal officials of the Unusual Event.
An Unusual Event is the lowest of four emergency classifications established by the U.S. Nuclear Regulatory Commission.
Byron Generating Station is in Ogle County, Ill., about 25 miles southwest of Rockford.
Exelon Corporation is one of the nation’s largest electric utilities with approximately $19 billion in annual revenues. 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 494,000 customers in the Philadelphia area. Exelon is headquartered in Chicago and trades on the NYSE under the ticker EXC.