Seversk
Reactor Data
Reactor Units
Every power reactor at this site as listed in the IAEA Power Reactor Information System (PRIS): reactor type and model, net electrical capacity, grid connection and commercial operation dates, and current status.
1 unit: 1 under construction.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| BREST-OD-300 | FBR | BREST-OD-300 | 281 | 2021-06-08 | 2028-12-31 | Under Construction |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| BREST-OD-300 | 281 | 300 | 700 | Atomenergomash | Atomenergomash |
Operator: Siberian Chemical Plant JSC
Owner: Siberian Chemical Plant JSC
Source: IAEA Power Reactor Information System (PRIS), as of 2026-10-14.
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: 4 in operation, 1 under construction.
| Facility | Type | Scale | Design Capacity | Operated | Status | Operator |
|---|---|---|---|---|---|---|
| Siberian Chemical Plant (Conversion), SCP JSC | Conversion to UF6 | Commercial | 10000 t HM/year | 1953– | In Operation | SCP, JSC |
| Siberian Chemical Plant (Enrichment), SCP JSC | Uranium Enrichment | Commercial | 4000 MTSWU/year | 1953– | In Operation | SCP, JSC |
| Fabrication-Refabrication module BREST-OD-300 | Fuel Fabrication | Commercial | 2024– | In Operation | JSC SCC | |
| Siberian Chemical Plant (REMIX fuel), SCP JSC | MOX fuel fabrication (Mox Powder, Pellet, Pin, FA) | Commercial | In Operation | SCP, JSC | ||
| Reprocessing module at BREST-OD-300 pilot demonstration power complex | SF reprocessing and P & T | Pilot plant | 2026– | Under Construction | JSC SCC |
Source: IAEA Nuclear Fuel Cycle Facilities Database (NFCFDB), as of 2026-10-13.
Working Here
Per Diem Rates FY 2026
Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from the U.S. State Department foreign per diem tables for FY 2026.
$173
Lodging/Night
$112
M&IE/Day
$285
Total/Day
Russia: rate for locations the State Department does not list separately
U.S. Department of State foreign per diem, for U.S. government and contractor travel.
Photos
Photos of this facility from the NukeWorker photo gallery. Click the header or any photo to browse the full album.
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.
56.6573, 84.9511
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
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: Siberian Chemical Combine; RIA Tomsk: BREST reactor construction at the SCP officially started on Tuesday.
Seversk (formerly Tomsk-7) is a closed city in Tomsk Oblast, Russia, and the site of the Siberian Chemical Combine, a complex for plutonium production and nuclear materials processing. The combine was established in the early 1950s.
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Its plutonium production reactors went into operation in 1955 (EI-1), 1958 (EI-2), 1961 (ADE-3) and 1963 (ADE-2). A radiochemical plant started up in two stages in 1961 and 1962. The last plutonium production reactor was shut down in 2008. On June 8, 2021, first concrete was poured for the BREST-OD-300 lead-cooled fast reactor, which marked the official start of its construction.