Portsmouth
Portsmouth, OH
Facility Data
Fuel Cycle Facilities
Fuel cycle plants at this site, as listed in the IAEA Nuclear Fuel Cycle Facilities Database: what each plant does, its scale and design capacity, the years it operated, its current status and who operates it.
5 facilities: 2 in operation, 1 shutdown, 1 under construction, 1 commissioning.
| Facility | Type | Scale | Design Capacity | Operated | Status | Operator |
|---|---|---|---|---|---|---|
| Portsmouth | Re-conversion to UO2 Powder | Commercial | 13500 t HM/year | 2010– | In Operation | |
| American Centrifuge Plant | Uranium Enrichment | Commercial | 4800 MTSWU/year | 2022– | In Operation | CENTRUS ENERGY CORP |
| Portsmouth Gaseous Diffusion | Uranium Enrichment | Commercial | 7400 MTSWU/year | 1965–2001 | Shutdown | U.S. Department of Energy (DOE) |
| HALEU Demonstration Plant | Fuel Fabrication (U Pellet, Pin, FA) | Pilot plant | 0.9 t U/year | 2024– | Under Construction | CENTRUS ENERGY CORP |
| American Centrifuge Demonstration Facility | Uranium Enrichment | Pilot plant | 0 MTSWU/year | Commissioning | CENTRUS ENERGY CORP |
Source: IAEA Nuclear Fuel Cycle Facilities Database (NFCFDB), as of 2026-10-13.
Working Here
Jobs in OH 4 active
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Per Diem Rates FY 2027
Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from GSA for FY 2027. Lodging rates vary by month — click "Show Monthly" to see the breakdown.
$186
Lodging/Night
$129–$186 range
$74
M&IE/Day
$260
Total/Day
Portsmouth, Rockingham County, NH
Unemployment Benefits OH
Maximum state unemployment insurance benefits for OH. Actual benefits depend on your earnings history and may be lower than the maximum. Data as of Jan 2026.
$789
Max Weekly
26
Max Weeks
$20,514
Max Total
7-day waiting period before benefits begin
Photos
Photos of this facility from the NukeWorker photo gallery. Click the header or any photo to browse the full album.
![Portsmouth Gaseous Diffusion Plant](https://www.nukeworker.com/pictures/albums/userpics/12116/thumb_69.jpg "Portsmouth Gaseous Diffusion Plant
At the Portsmouth Gaseous Diffusion Plant, uranium gas is pumped through miles of pipe that filter the smaller, lighter uranium-235 atoms form uranium-238. U-235 sustains the nuclear chain reaction in reactors and in bombs. The three "process buildings" are among the largest industrial structures in the world; each is half a mile long; they operate around the clock and can together consume in a day as much electricity as the city of Memphis, Tennessee. Piketon, Ohio. July 27, 1983.
Keywords: Portsmouth Gaseous Diffusion Plant Piketon, Ohio
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Facility Map
Interactive satellite map showing the facility's geographic location. Marker color indicates current status: green for online, red for offline, orange for reduced power. Click the header to open in Google Maps satellite view.
39.0086, -82.9977
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
NukeWorker Member Ratings 31 votes
Community ratings from NukeWorker members. Vote to share your experience working at this facility. Score uses a Bayesian average that accounts for vote count — facilities with few votes are pulled toward the fleet average, so rankings reflect confidence, not just raw percentages.
Above Average
4 (12%)
Average
7 (22%)
Below Average
20 (64%)
Plant Facts
About This Site
Written by NukeWorker from public records: facts that do not change. Operator, status and capacity come from the live data elsewhere on this page. Sources: Wikipedia: Portsmouth Gaseous Diffusion Plant.
The Portsmouth Gaseous Diffusion Plant is a former uranium enrichment plant in Scioto Township, Pike County, Ohio, just south of the village of Piketon. It was built for the U.S. Atomic Energy Commission.
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The site was selected in August 1952, and groundbreaking took place on November 18, 1952. Enrichment began in 1954 while construction continued, and the plant was fully online by early 1956. Gaseous diffusion enrichment ended in May 2001. Separately, a Department of Energy gas centrifuge enrichment plant was under construction at the site in the early 1980s and was abandoned in June 1985. The site never hosted an operating nuclear reactor.