Description :

The three mile island accident was a partial meltdown of reactor number 2 of three mile island nuclear generating station tmi 2 in dauphin county pennsylvania near harrisburg and subsequent radiation leak that occurred on march 28 1979 it is the most significant accident in us commercial nuclear power plant history on the seven point international nuclear event scale the incident . Three mile island is the site of a nuclear power plant in south central pennsylvania in march 1979 a series of mechanical and human errors at the plant. Three mile island nuclear generating station tmi is a closed nuclear power plant on three mile island in londonderry township pennsylvania on the susquehanna river just south of harrisburgit had two separate units tmi 1 owned by exelon generation and tmi 2 owned by firstenergy corp the plant was site of the most significant accident in united states commercial nuclear energy when . Three mile island accident accident in 1979 at the three mile island nuclear power station that was the most serious in the history of the american nuclear power industry the three mile island power station was named after the island on which it was situated in the susquehanna river near harrisburg paat 400 am on march 28 an automatically operated valve in the unit 2 reactor mistakenly . Three mile island is best known as the location of the most serious accident at a commercial nuclear power plant in us history in 1979 the plant experienced the partial meltdown of one of its