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John Sevier Fossil Plant, commonly known as John Sevier Steam Plant, was a 0.88-gigawatt (880 MW) coal-fired power plant located in Hawkins County, Tennessee, south of Rogersville on the shore of the Holston River. [2] It was operated by the Tennessee Valley Authority.
A steam–electric power station is a power station in which the electric generator is steam-driven: water is heated, evaporates, and spins a steam turbine which drives an electric generator. After it passes through the turbine, the steam is condensed in a condenser .
The plant was the only single-generator coal-fired plant in the TVA system. The plant's winter net generating capacity was about 889 MWe . [ 5 ] [ 6 ] The plant consumed 7,300 short tons (6,600 t) of coal per day, [ 1 ] and required 3,200 short tons (2,900 t) of cooling water per hour.
Generating tubes are lined up from either sides of the steam and water drums. When water boils due to convection heating, steam rises up through the tubes and into the steam drum. This is a symmetrical design for restrictive plant layouts. O-type boilers are mainly used for their fast steam production and reduced maintenance cost. [3]
Although the definitions are somewhat flexible, it can be said that older steam generators were commonly termed boilers and worked at low to medium pressure (7–2,000 kPa or 1–290 psi) but, at pressures above this, it is more usual to speak of a steam generator. A boiler or steam generator is used wherever a source of steam is required.
Kingston Fossil Plant, commonly known as Kingston Steam Plant, is a 1.4-gigawatt (1,398 MW) coal-fired power plant located in Roane County, just outside Kingston, Tennessee, on the shore of Watts Bar Lake. It is operated by the Tennessee Valley Authority. The plant is known for the Kingston Fossil Plant fly ash spill which occurred in December 2008