Provenance Record

Well-structured News piece (775 words, within the 400-1200 News range). Clear sectioning (Overview, What We Know, The Reactor Behind the Tool, What We Don't Know, Analysis). Appropriately separates the company-provided marketing claim (18 months to 8 weeks) from independently reported reactor facts, and explicitly flags in 'What We Don't Know' that the speed figure traces to a single company-provided framing repeated across outlets.

Read all available source snapshots from disk plus one live fallback. source-0 (TerraPower): CONFIRMS the headline quote 'reducing site-specific design work from 18 months to as short as eight weeks', 'thousands of variables simultaneously', the Eric Williams quote ('With our initial Natrium plant design complete...' and 'To meet growing power demand, advanced nuclear plants must move to construction faster, with higher design precision and disciplined execution'), 'geotechnical modeling, grid interconnection analysis and site-specific layout optimization', and 'single, dual or quad...between 500 MW and 2 GW'. source-2 (Interesting Engineering): CONFIRMS '18 months...as little as eight weeks', 'years of manual calculation and cross-departmental coordination', and both Loktinov quotes verbatim. source-3 (POWER Magazine): CONFIRMS all reactor specifics — 345-MW sodium-cooled fast reactor, integrated molten-salt storage, 500-MW boost / 500-MWe for more than five and a half hours, NRC Part 50 construction permit authorized March 4, 2026, 'nearly a decade', official construction start April 23, 2026, 1,120-acre site near retiring Naughton coal plant, 2030-2031 commercial operation target, ~$4 billion all-in cost split 50% DOE ARDP grant / 50% private. source-4 (ANS): CONFIRMS the Overview lead attribution. source-5 (SVI-NEWS): CONFIRMS the Spieler quote ('designs, licenses, permits, builds and operates advanced nuclear power plants') and the Loktinov/Williams quotes attributed to it. source-1 (Nuclear Engineering International): snapshot FAILED with HTTP 403 (file null in manifest); verified via live WebFetch as last resort — the page contains 'reducing site-specific design work from 18 months to as little as eight weeks', exactly matching the article's attribution.

Every specific number, name, date, and quote traces to a cited source and matches it. Headline '18 months to eight weeks' claim sourced to TerraPower and NEI. Reactor/construction specifics (345-MW, Kemmerer Unit 1, March 4 2026 NRC permit, April 23 2026 construction start, ~$4B) all sourced to POWER Magazine. No hallucinations or misattributions detected.

High-quality, fully-sourced submission. The automated script defaulted to APPROVE_WITH_CORRECTIONS solely on two operational warnings (allowlist membership and one bot-blocked fetch), neither of which reflects a factual defect in the article. After reading every source — including a live verification of the one blocked source — no reader-facing correction is warranted. Approving as-is.