The week in nuclear — from Oak Ridge to Oslo.

The US-Iran ceasefire expires this week with Iran's uranium enrichment still unresolved — while back home, US nuclear is moving faster than it has in 50 years.

In context: The Strait of Hormuz has partially reopened under a fragile two-week ceasefire, but talks in Islamabad collapsed after 21 hours — nuclear enrichment is the last wall. AI data centers now consume over 10% of US electricity, up from 4% in 2023. Both pressures are pointing the same direction: domestic nuclear needs to move, and this week there's evidence it is.

• Westinghouse files AP1000 Revision 20 — Vogtle Unit 4 becomes the US reference plant
  40-year cert renewal requested by end of 2026. Every future AP1000 applicant replicates an already-built design, not a blueprint.
• DOE names 11 reactor pilot projects — 3 targeted to achieve criticality by July 4
  Runs under DOE's own authorization, separate from NRC commercial licensing. A companion rule would feed operational data back into commercial licensing reviews.
• US-Iran talks stall over nuclear enrichment — ceasefire expires this week
  US demands 20-year suspension; Iran offered 3 to 5. VP Vance expected to participate in second round if talks resume before expiration.
• Gordian drafts NRC license chapter in one day — experts take 4–6 weeks
  208-page Revision 0 output from DOE, Everstar, INL, Argonne, and Microsoft. Retrieval-augmented, citations built in.