{
  "slug": "imsr",
  "name": "IMSR (Integral Molten Salt Reactor)",
  "company_id": null,
  "coolant": "Molten fluoride salt",
  "reactor_type": "msr",
  "output_mwe": 195,
  "thermal_mw": null,
  "fuel_type": "Uranium fuel dissolved in salt",
  "enrichment_class": "HALEU",
  "enrichment_pct": null,
  "regulator": "US NRC and CNSC (Canada)",
  "application_type": "Topical reports; pre-application",
  "application_date": null,
  "review_phase": "Topical reports approved; no licence application submitted",
  "decision_expected": null,
  "credibility_tier": "pre_application",
  "docket": "NRC approved IMSR Principal Design Criteria topical report (2025) and Postulated Initiating Event methodology (2026)",
  "first_site_name": null,
  "first_site_country": null,
  "offtakers": null,
  "model_match": null,
  "transportable": 0,
  "form_factor": null,
  "what_if": "Terrestrial Energy would need to file a construction permit application, and a first-of-a-kind molten salt reactor would need to demonstrate that its corrosion and fuel-salt chemistry behave over years, not months. No commercial MSR has ever operated.\n",
  "notes": "Approved topical reports are real regulatory progress and are often reported as if they were approval of the reactor. They are not: they settle methodology questions in advance of an application that has not yet been made.\n",
  "source_name": "Terrestrial Energy SEC filings",
  "source_url": "https://www.sec.gov/Archives/edgar/data/0002019804/000110465926060716/tmb-20260514xex99d1.htm",
  "url": "https://nuclearchain.net/smr/imsr/",
  "license": "CC BY 4.0",
  "attribution": "NuclearChain (nuclearchain.net)"
}