Portsmouth Gaseous Diffusion Plant is located in Pike County, Ohio
The Portsmouth site is in rural Pike County, Ohio, north of the city of Portsmouth. It is located on a federal reservation that encompasses 3,777 acres. More than 2,000 workers are employed at the site, making it one of the largest employment drivers in the region. It consists of three operational areas: the gaseous diffusion plant, centrifuge facility and depleted uranium hexafluoride conversion (DUF6) facility.
The largest of the three areas is the gaseous diffusion plant, which consists of three main process buildings (X-333, X-330, and X-326) housing the gaseous diffusion process equipment, as well as hundreds of supporting facilities. The various support facilities include those needed for feed and transfer operations, maintenance, steam generation, chemical cleaning, decontamination, process heat removal, water supply, water storage, water distribution, electrical power distribution, and administration.
Most of the buildings are within an approximate 1,000-acre industrialized area that lies within the Perimeter Road. The remaining property outside of Perimeter Road is used for a variety of purposes, including a water treatment plant, sediment ponds, closed landfills, cylinder storage yards, open fields, and forested buffer areas.
