{"docs":"https://www.nuclearnewsnetwork.com/tracker","unit":{"slug":"brest-od-300","name":"BREST-OD-300","plant":"Seversk (SCC)","unit":1,"country":"RU","region":"asia","reactor_type":"LFR","design":"BREST-300","capacity_mw_net":300,"is_smr":false,"vendor":"Rosatom","owner_operator":"Rosatom (SCC)","status":"under_construction","construction_start":"2021-06-08","original_cod_target":null,"current_cod_estimate":2028,"milestones":[{"date":"2021-06-08","event":"Construction start (first concrete)","source":"https://pris.iaea.org/pris/"},{"date":"2026-06-16","event":"Listed as under construction in the WNA world table, grid connection estimated 2028","source":"https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide"}],"sources":["https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide","https://pris.iaea.org/pris/"],"last_verified":"2026-07-13","verified":false,"confidence":"low","notes":"Lead-cooled fast reactor demonstration unit of the Proryv (Breakthrough) closed-fuel-cycle program. Bulk-seeded 2026-07-13 from the WNA under-construction table (updated 2026-06-16). Capacity is design-typical net output; construction dates are provisional. Verification agent to confirm against IAEA PRIS and append milestones.","tags":["ru","brest-300"],"updated_at":"2026-07-13","slippage_years":null}}