Three Mile Island, Three Mile Island Nuclear Plant, Small Radiation Leak Detected at Three Mile Island, Small Radiation Leak Three Mile Island, Three Mile Island Nuclear Generating Station (TMI), Three Mile Island Nuclear Generating Station| TMI-1, TMI-2, US Nuclear Regulatory Commission, General Public Utilities Corporation, Dauphin County Emergency Management Agency, Small Radiation Leak Three Mile Island November 21st 2009

Three Mile Island Nuclear Generating Station (TMI) is a civilian nuclear power plant located on Three Mile Island in the Susquehanna River, in Londonderry Township, Dauphin County, south of Harrisburg, Pennsylvania, United States.It has two separate generators, known as TMI-1 and TMI-2. The plant is best known for having been the site of the worst civilian nuclear accident in United States history on March 29, 1979, when TMI-2 suffered a partial meltdown. According to the US Nuclear Regulatory Commission, the accident resulted in no deaths or injuries to plant workers or members of nearby communities, a contention which is disputed by some academics, journalists and local residents. The reactor core of TMI-2 has since been removed from the site, but the site has not been decommissioned yet.

Three Mile Island is so named because it is located 3 miles downriver from Middletown, Pennsylvania. The plant was originally built by General Public Utilities Corporation, later renamed GPU Incorporated. The plant was operated by Metropolitan Edison Company (Met-Ed), a subsidiary of the GPU Energy division. During 2001 GPU Inc. merged with FirstEnergy Corporation, through the selling of its outstanding common stock.

Officials with the Dauphin County Emergency Management Agency reported,on November 21st, 2009,at about 4pm on Saturday afternoon, a radiation leak occurred inside the containment building of Three Mile Island Unit 1(TMI-1) while workers were cutting pipes. Approximately 20 employees were treated for radiation exposure. As of November 22nd, 2009, it is believed that no radiation escaped the containment building and the public is not in any danger. The plant is currently shut down and the incident is under investigation.Officials say about 150 employees were sent home after the radiation was detected Saturday afternoon, but that there is no public health risk.