August 22, 2012

 Three Mile Island Operators Take Unit Offline 

 Operators at Three Mile Island Generating Station took the unit offline today to make repairs to a heater element on the plant’s pressurizer tank. 

 

Londonderry Township - Operators at Three Mile Island Generating Station took the unit offline today to make repairs to a heater element on the plant’s pressurizer tank.  The repairs can only be done with the unit offline.  TMI will return to service after the repairs, inspections and testing on the heater element are complete. 

During the shutdown steam was released into the atmosphere, creating a loud noise heard by nearby residents. 

“We are always closely monitoring plant systems and equipment as part of our daily operations,” said Rick Libra, TMI Site Vice President.  “This maintenance work will help ensure that Three Mile Island operates safely and reliably for the long-term.”

Three Mile Island is located about 12 miles south of Harrisburg, Pa.  The plant generates 852 megawatts of carbon free power - enough electricity for about 800,000 homes.  Electric customers were not affected by the plant being off line.

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About Exelon

Exelon Corporation (NYSE:EXC) is the nation’s leading competitive energy provider, with approximately $33 billion in annual revenues. Headquartered in Chicago, Exelon has operations and business activities in 47 states, the District of Columbia and Canada. Exelon is the largest competitive U.S. power generator, with approximately 35,000 megawatts of owned capacity comprising one of the nation’s cleanest and lowest-cost power generation fleets. The company’s Constellation business unit provides energy products and services to approximately 100,000 business and public sector customers and approximately 1 million residential customers. Exelon’s utilities deliver electricity and natural gas to more than 6.6 million customers in central Maryland (BGE), northern Illinois (ComEd) and southeastern Pennsylvania (PECO).

Contacts

Ralph DeSantis Exelon Nuclear Communications
717.948.8930
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