Portsmouth Site

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The Portsmouth plant enriched uranium from 1954 until 2001 through a process called gaseous diffusion.

The Portsmouth Gaseous Diffusion Plant at Piketon, Ohio, was built from 1952 to 1956. The plant was one of three large gaseous diffusion plants in the United States initially constructed to produce enriched uranium to support the nation’s nuclear weapons program and U.S. Navy, and later enriched uranium used by commercial nuclear reactors. It occupies about 1,200 acres of the 3,777-acre Portsmouth Site. Weapons-grade uranium enrichment was later suspended, and after the Cold War the production facilities were leased to the private sector.  In 2001, gaseous diffusion enrichment operations were discontinued at the site. DOE's Office of Environmental Management commenced its environmental cleanup program at the site in 1989 and the effort continues today in cooperation with the U.S. and Ohio Environmental Protection Agencies.  Decontamination and decommissioning (D&D) of the plant commenced in 2011 and is ongoing.  

PORTSMOUTH SITE ACTIVITIES

Portsmouth Environmental Cleanup
Decades of uranium enrichment and support activities at Portsmouth required the use of a number of typical and special industrial chemicals and materi
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Portsmouth Decontamination & Decommissioning
The Decontamination & Decommissioning (D&D) Program at the Portsmouth Site addresses recent, current and planned demolition of facilities.
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Portsmouth Future Use
DOE's D&D project helps prepare the site for reuse, supporting the community’s vision to redevelop the Portsmouth Site property.
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Portsmouth Community Outreach
DOE is committed to fostering meaningful public involvement in environmental remediation decision-making at the Portsmouth Site.
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PORTSMOUTH NEWS

EM Upgrades Portsmouth Emergency Management Facilities
EM Upgrades Portsmouth Emergency Management Facilities
May 22, 2018
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EM, Stakeholders Engage Community on Portsmouth Site Future Use
EM recently hosted open houses, joining stakeholder organizations in discussing with local residents various community reindustrialization efforts.
May 1, 2018
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Community Open House Series Focuses on Portsmouth Site Future Uses
Community Open House Series Focuses on Portsmouth Site Future Uses
April 24, 2018
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Portsmouth Site Kicks Off Public Tours Season
Portsmouth Site Kicks Off Public Tours Season
April 24, 2018
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